vendor/assets/leaflet/leaflet.js

   1 /*
   2  Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com
   3  (c) 2010-2013, Vladimir Agafonkin
   4  (c) 2010-2011, CloudMade
   5 */
   6 (function (window, document, undefined) {
   7 var oldL = window.L,
   8     L = {};
   9
  10 L.version = '0.6.3';
  11
  12 // define Leaflet for Node module pattern loaders, including Browserify
  13 if (typeof module === 'object' && typeof module.exports === 'object') {
  14         module.exports = L;
  15
  16 // define Leaflet as an AMD module
  17 } else if (typeof define === 'function' && define.amd) {
  18         define(L);
  19 }
  20
  21 // define Leaflet as a global L variable, saving the original L to restore later if needed
  22
  23 L.noConflict = function () {
  24         window.L = oldL;
  25         return this;
  26 };
  27
  28 window.L = L;
  29
  30
  31 /*
  32  * L.Util contains various utility functions used throughout Leaflet code.
  33  */
  34
  35 L.Util = {
  36         extend: function (dest) { // (Object[, Object, ...]) ->
  37                 var sources = Array.prototype.slice.call(arguments, 1),
  38                     i, j, len, src;
  39
  40                 for (j = 0, len = sources.length; j < len; j++) {
  41                         src = sources[j] || {};
  42                         for (i in src) {
  43                                 if (src.hasOwnProperty(i)) {
  44                                         dest[i] = src[i];
  45                                 }
  46                         }
  47                 }
  48                 return dest;
  49         },
  50
  51         bind: function (fn, obj) { // (Function, Object) -> Function
  52                 var args = arguments.length > 2 ? Array.prototype.slice.call(arguments, 2) : null;
  53                 return function () {
  54                         return fn.apply(obj, args || arguments);
  55                 };
  56         },
  57
  58         stamp: (function () {
  59                 var lastId = 0,
  60                     key = '_leaflet_id';
  61                 return function (obj) {
  62                         obj[key] = obj[key] || ++lastId;
  63                         return obj[key];
  64                 };
  65         }()),
  66
  67         invokeEach: function (obj, method, context) {
  68                 var i, args;
  69
  70                 if (typeof obj === 'object') {
  71                         args = Array.prototype.slice.call(arguments, 3);
  72
  73                         for (i in obj) {
  74                                 method.apply(context, [i, obj[i]].concat(args));
  75                         }
  76                         return true;
  77                 }
  78
  79                 return false;
  80         },
  81
  82         limitExecByInterval: function (fn, time, context) {
  83                 var lock, execOnUnlock;
  84
  85                 return function wrapperFn() {
  86                         var args = arguments;
  87
  88                         if (lock) {
  89                                 execOnUnlock = true;
  90                                 return;
  91                         }
  92
  93                         lock = true;
  94
  95                         setTimeout(function () {
  96                                 lock = false;
  97
  98                                 if (execOnUnlock) {
  99                                         wrapperFn.apply(context, args);
 100                                         execOnUnlock = false;
 101                                 }
 102                         }, time);
 103
 104                         fn.apply(context, args);
 105                 };
 106         },
 107
 108         falseFn: function () {
 109                 return false;
 110         },
 111
 112         formatNum: function (num, digits) {
 113                 var pow = Math.pow(10, digits || 5);
 114                 return Math.round(num * pow) / pow;
 115         },
 116
 117         trim: function (str) {
 118                 return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
 119         },
 120
 121         splitWords: function (str) {
 122                 return L.Util.trim(str).split(/\s+/);
 123         },
 124
 125         setOptions: function (obj, options) {
 126                 obj.options = L.extend({}, obj.options, options);
 127                 return obj.options;
 128         },
 129
 130         getParamString: function (obj, existingUrl, uppercase) {
 131                 var params = [];
 132                 for (var i in obj) {
 133                         params.push(encodeURIComponent(uppercase ? i.toUpperCase() : i) + '=' + encodeURIComponent(obj[i]));
 134                 }
 135                 return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&');
 136         },
 137
 138         template: function (str, data) {
 139                 return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) {
 140                         var value = data[key];
 141                         if (value === undefined) {
 142                                 throw new Error('No value provided for variable ' + str);
 143                         } else if (typeof value === 'function') {
 144                                 value = value(data);
 145                         }
 146                         return value;
 147                 });
 148         },
 149
 150         isArray: function (obj) {
 151                 return (Object.prototype.toString.call(obj) === '[object Array]');
 152         },
 153
 154         emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='
 155 };
 156
 157 (function () {
 158
 159         // inspired by http://paulirish.com/2011/requestanimationframe-for-smart-animating/
 160
 161         function getPrefixed(name) {
 162                 var i, fn,
 163                     prefixes = ['webkit', 'moz', 'o', 'ms'];
 164
 165                 for (i = 0; i < prefixes.length && !fn; i++) {
 166                         fn = window[prefixes[i] + name];
 167                 }
 168
 169                 return fn;
 170         }
 171
 172         var lastTime = 0;
 173
 174         function timeoutDefer(fn) {
 175                 var time = +new Date(),
 176                     timeToCall = Math.max(0, 16 - (time - lastTime));
 177
 178                 lastTime = time + timeToCall;
 179                 return window.setTimeout(fn, timeToCall);
 180         }
 181
 182         var requestFn = window.requestAnimationFrame ||
 183                 getPrefixed('RequestAnimationFrame') || timeoutDefer;
 184
 185         var cancelFn = window.cancelAnimationFrame ||
 186                 getPrefixed('CancelAnimationFrame') ||
 187                 getPrefixed('CancelRequestAnimationFrame') ||
 188                 function (id) { window.clearTimeout(id); };
 189
 190
 191         L.Util.requestAnimFrame = function (fn, context, immediate, element) {
 192                 fn = L.bind(fn, context);
 193
 194                 if (immediate && requestFn === timeoutDefer) {
 195                         fn();
 196                 } else {
 197                         return requestFn.call(window, fn, element);
 198                 }
 199         };
 200
 201         L.Util.cancelAnimFrame = function (id) {
 202                 if (id) {
 203                         cancelFn.call(window, id);
 204                 }
 205         };
 206
 207 }());
 208
 209 // shortcuts for most used utility functions
 210 L.extend = L.Util.extend;
 211 L.bind = L.Util.bind;
 212 L.stamp = L.Util.stamp;
 213 L.setOptions = L.Util.setOptions;
 214
 215
 216 /*
 217  * L.Class powers the OOP facilities of the library.
 218  * Thanks to John Resig and Dean Edwards for inspiration!
 219  */
 220
 221 L.Class = function () {};
 222
 223 L.Class.extend = function (props) {
 224
 225         // extended class with the new prototype
 226         var NewClass = function () {
 227
 228                 // call the constructor
 229                 if (this.initialize) {
 230                         this.initialize.apply(this, arguments);
 231                 }
 232
 233                 // call all constructor hooks
 234                 if (this._initHooks) {
 235                         this.callInitHooks();
 236                 }
 237         };
 238
 239         // instantiate class without calling constructor
 240         var F = function () {};
 241         F.prototype = this.prototype;
 242
 243         var proto = new F();
 244         proto.constructor = NewClass;
 245
 246         NewClass.prototype = proto;
 247
 248         //inherit parent's statics
 249         for (var i in this) {
 250                 if (this.hasOwnProperty(i) && i !== 'prototype') {
 251                         NewClass[i] = this[i];
 252                 }
 253         }
 254
 255         // mix static properties into the class
 256         if (props.statics) {
 257                 L.extend(NewClass, props.statics);
 258                 delete props.statics;
 259         }
 260
 261         // mix includes into the prototype
 262         if (props.includes) {
 263                 L.Util.extend.apply(null, [proto].concat(props.includes));
 264                 delete props.includes;
 265         }
 266
 267         // merge options
 268         if (props.options && proto.options) {
 269                 props.options = L.extend({}, proto.options, props.options);
 270         }
 271
 272         // mix given properties into the prototype
 273         L.extend(proto, props);
 274
 275         proto._initHooks = [];
 276
 277         var parent = this;
 278         // jshint camelcase: false
 279         NewClass.__super__ = parent.prototype;
 280
 281         // add method for calling all hooks
 282         proto.callInitHooks = function () {
 283
 284                 if (this._initHooksCalled) { return; }
 285
 286                 if (parent.prototype.callInitHooks) {
 287                         parent.prototype.callInitHooks.call(this);
 288                 }
 289
 290                 this._initHooksCalled = true;
 291
 292                 for (var i = 0, len = proto._initHooks.length; i < len; i++) {
 293                         proto._initHooks[i].call(this);
 294                 }
 295         };
 296
 297         return NewClass;
 298 };
 299
 300
 301 // method for adding properties to prototype
 302 L.Class.include = function (props) {
 303         L.extend(this.prototype, props);
 304 };
 305
 306 // merge new default options to the Class
 307 L.Class.mergeOptions = function (options) {
 308         L.extend(this.prototype.options, options);
 309 };
 310
 311 // add a constructor hook
 312 L.Class.addInitHook = function (fn) { // (Function) || (String, args...)
 313         var args = Array.prototype.slice.call(arguments, 1);
 314
 315         var init = typeof fn === 'function' ? fn : function () {
 316                 this[fn].apply(this, args);
 317         };
 318
 319         this.prototype._initHooks = this.prototype._initHooks || [];
 320         this.prototype._initHooks.push(init);
 321 };
 322
 323
 324 /*
 325  * L.Mixin.Events is used to add custom events functionality to Leaflet classes.
 326  */
 327
 328 var eventsKey = '_leaflet_events';
 329
 330 L.Mixin = {};
 331
 332 L.Mixin.Events = {
 333
 334         addEventListener: function (types, fn, context) { // (String, Function[, Object]) or (Object[, Object])
 335
 336                 // types can be a map of types/handlers
 337                 if (L.Util.invokeEach(types, this.addEventListener, this, fn, context)) { return this; }
 338
 339                 var events = this[eventsKey] = this[eventsKey] || {},
 340                     contextId = context && L.stamp(context),
 341                     i, len, event, type, indexKey, indexLenKey, typeIndex;
 342
 343                 // types can be a string of space-separated words
 344                 types = L.Util.splitWords(types);
 345
 346                 for (i = 0, len = types.length; i < len; i++) {
 347                         event = {
 348                                 action: fn,
 349                                 context: context || this
 350                         };
 351                         type = types[i];
 352
 353                         if (context) {
 354                                 // store listeners of a particular context in a separate hash (if it has an id)
 355                                 // gives a major performance boost when removing thousands of map layers
 356
 357                                 indexKey = type + '_idx';
 358                                 indexLenKey = indexKey + '_len';
 359
 360                                 typeIndex = events[indexKey] = events[indexKey] || {};
 361
 362                                 if (!typeIndex[contextId]) {
 363                                         typeIndex[contextId] = [];
 364
 365                                         // keep track of the number of keys in the index to quickly check if it's empty
 366                                         events[indexLenKey] = (events[indexLenKey] || 0) + 1;
 367                                 }
 368
 369                                 typeIndex[contextId].push(event);
 370
 371
 372                         } else {
 373                                 events[type] = events[type] || [];
 374                                 events[type].push(event);
 375                         }
 376                 }
 377
 378                 return this;
 379         },
 380
 381         hasEventListeners: function (type) { // (String) -> Boolean
 382                 var events = this[eventsKey];
 383                 return !!events && ((type in events && events[type].length > 0) ||
 384                                     (type + '_idx' in events && events[type + '_idx_len'] > 0));
 385         },
 386
 387         removeEventListener: function (types, fn, context) { // ([String, Function, Object]) or (Object[, Object])
 388
 389                 if (!this[eventsKey]) {
 390                         return this;
 391                 }
 392
 393                 if (!types) {
 394                         return this.clearAllEventListeners();
 395                 }
 396
 397                 if (L.Util.invokeEach(types, this.removeEventListener, this, fn, context)) { return this; }
 398
 399                 var events = this[eventsKey],
 400                     contextId = context && L.stamp(context),
 401                     i, len, type, listeners, j, indexKey, indexLenKey, typeIndex, removed;
 402
 403                 types = L.Util.splitWords(types);
 404
 405                 for (i = 0, len = types.length; i < len; i++) {
 406                         type = types[i];
 407                         indexKey = type + '_idx';
 408                         indexLenKey = indexKey + '_len';
 409
 410                         typeIndex = events[indexKey];
 411
 412                         if (!fn) {
 413                                 // clear all listeners for a type if function isn't specified
 414                                 delete events[type];
 415                                 delete events[indexKey];
 416
 417                         } else {
 418                                 listeners = context && typeIndex ? typeIndex[contextId] : events[type];
 419
 420                                 if (listeners) {
 421                                         for (j = listeners.length - 1; j >= 0; j--) {
 422                                                 if ((listeners[j].action === fn) && (!context || (listeners[j].context === context))) {
 423                                                         removed = listeners.splice(j, 1);
 424                                                         // set the old action to a no-op, because it is possible
 425                                                         // that the listener is being iterated over as part of a dispatch
 426                                                         removed[0].action = L.Util.falseFn;
 427                                                 }
 428                                         }
 429
 430                                         if (context && typeIndex && (listeners.length === 0)) {
 431                                                 delete typeIndex[contextId];
 432                                                 events[indexLenKey]--;
 433                                         }
 434                                 }
 435                         }
 436                 }
 437
 438                 return this;
 439         },
 440
 441         clearAllEventListeners: function () {
 442                 delete this[eventsKey];
 443                 return this;
 444         },
 445
 446         fireEvent: function (type, data) { // (String[, Object])
 447                 if (!this.hasEventListeners(type)) {
 448                         return this;
 449                 }
 450
 451                 var event = L.Util.extend({}, data, { type: type, target: this });
 452
 453                 var events = this[eventsKey],
 454                     listeners, i, len, typeIndex, contextId;
 455
 456                 if (events[type]) {
 457                         // make sure adding/removing listeners inside other listeners won't cause infinite loop
 458                         listeners = events[type].slice();
 459
 460                         for (i = 0, len = listeners.length; i < len; i++) {
 461                                 listeners[i].action.call(listeners[i].context || this, event);
 462                         }
 463                 }
 464
 465                 // fire event for the context-indexed listeners as well
 466                 typeIndex = events[type + '_idx'];
 467
 468                 for (contextId in typeIndex) {
 469                         listeners = typeIndex[contextId].slice();
 470
 471                         if (listeners) {
 472                                 for (i = 0, len = listeners.length; i < len; i++) {
 473                                         listeners[i].action.call(listeners[i].context || this, event);
 474                                 }
 475                         }
 476                 }
 477
 478                 return this;
 479         },
 480
 481         addOneTimeEventListener: function (types, fn, context) {
 482
 483                 if (L.Util.invokeEach(types, this.addOneTimeEventListener, this, fn, context)) { return this; }
 484
 485                 var handler = L.bind(function () {
 486                         this
 487                             .removeEventListener(types, fn, context)
 488                             .removeEventListener(types, handler, context);
 489                 }, this);
 490
 491                 return this
 492                     .addEventListener(types, fn, context)
 493                     .addEventListener(types, handler, context);
 494         }
 495 };
 496
 497 L.Mixin.Events.on = L.Mixin.Events.addEventListener;
 498 L.Mixin.Events.off = L.Mixin.Events.removeEventListener;
 499 L.Mixin.Events.once = L.Mixin.Events.addOneTimeEventListener;
 500 L.Mixin.Events.fire = L.Mixin.Events.fireEvent;
 501
 502
 503 /*
 504  * L.Browser handles different browser and feature detections for internal Leaflet use.
 505  */
 506
 507 (function () {
 508
 509         var ie = !!window.ActiveXObject,
 510             ie6 = ie && !window.XMLHttpRequest,
 511             ie7 = ie && !document.querySelector,
 512                 ielt9 = ie && !document.addEventListener,
 513
 514             // terrible browser detection to work around Safari / iOS / Android browser bugs
 515             ua = navigator.userAgent.toLowerCase(),
 516             webkit = ua.indexOf('webkit') !== -1,
 517             chrome = ua.indexOf('chrome') !== -1,
 518             phantomjs = ua.indexOf('phantom') !== -1,
 519             android = ua.indexOf('android') !== -1,
 520             android23 = ua.search('android [23]') !== -1,
 521
 522             mobile = typeof orientation !== undefined + '',
 523             msTouch = window.navigator && window.navigator.msPointerEnabled &&
 524                       window.navigator.msMaxTouchPoints,
 525             retina = ('devicePixelRatio' in window && window.devicePixelRatio > 1) ||
 526                      ('matchMedia' in window && window.matchMedia('(min-resolution:144dpi)') &&
 527                       window.matchMedia('(min-resolution:144dpi)').matches),
 528
 529             doc = document.documentElement,
 530             ie3d = ie && ('transition' in doc.style),
 531             webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()),
 532             gecko3d = 'MozPerspective' in doc.style,
 533             opera3d = 'OTransition' in doc.style,
 534             any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d) && !phantomjs;
 535
 536
 537         // PhantomJS has 'ontouchstart' in document.documentElement, but doesn't actually support touch.
 538         // https://github.com/Leaflet/Leaflet/pull/1434#issuecomment-13843151
 539
 540         var touch = !window.L_NO_TOUCH && !phantomjs && (function () {
 541
 542                 var startName = 'ontouchstart';
 543
 544                 // IE10+ (We simulate these into touch* events in L.DomEvent and L.DomEvent.MsTouch) or WebKit, etc.
 545                 if (msTouch || (startName in doc)) {
 546                         return true;
 547                 }
 548
 549                 // Firefox/Gecko
 550                 var div = document.createElement('div'),
 551                     supported = false;
 552
 553                 if (!div.setAttribute) {
 554                         return false;
 555                 }
 556                 div.setAttribute(startName, 'return;');
 557
 558                 if (typeof div[startName] === 'function') {
 559                         supported = true;
 560                 }
 561
 562                 div.removeAttribute(startName);
 563                 div = null;
 564
 565                 return supported;
 566         }());
 567
 568
 569         L.Browser = {
 570                 ie: ie,
 571                 ie6: ie6,
 572                 ie7: ie7,
 573                 ielt9: ielt9,
 574                 webkit: webkit,
 575
 576                 android: android,
 577                 android23: android23,
 578
 579                 chrome: chrome,
 580
 581                 ie3d: ie3d,
 582                 webkit3d: webkit3d,
 583                 gecko3d: gecko3d,
 584                 opera3d: opera3d,
 585                 any3d: any3d,
 586
 587                 mobile: mobile,
 588                 mobileWebkit: mobile && webkit,
 589                 mobileWebkit3d: mobile && webkit3d,
 590                 mobileOpera: mobile && window.opera,
 591
 592                 touch: touch,
 593                 msTouch: msTouch,
 594
 595                 retina: retina
 596         };
 597
 598 }());
 599
 600
 601 /*
 602  * L.Point represents a point with x and y coordinates.
 603  */
 604
 605 L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) {
 606         this.x = (round ? Math.round(x) : x);
 607         this.y = (round ? Math.round(y) : y);
 608 };
 609
 610 L.Point.prototype = {
 611
 612         clone: function () {
 613                 return new L.Point(this.x, this.y);
 614         },
 615
 616         // non-destructive, returns a new point
 617         add: function (point) {
 618                 return this.clone()._add(L.point(point));
 619         },
 620
 621         // destructive, used directly for performance in situations where it's safe to modify existing point
 622         _add: function (point) {
 623                 this.x += point.x;
 624                 this.y += point.y;
 625                 return this;
 626         },
 627
 628         subtract: function (point) {
 629                 return this.clone()._subtract(L.point(point));
 630         },
 631
 632         _subtract: function (point) {
 633                 this.x -= point.x;
 634                 this.y -= point.y;
 635                 return this;
 636         },
 637
 638         divideBy: function (num) {
 639                 return this.clone()._divideBy(num);
 640         },
 641
 642         _divideBy: function (num) {
 643                 this.x /= num;
 644                 this.y /= num;
 645                 return this;
 646         },
 647
 648         multiplyBy: function (num) {
 649                 return this.clone()._multiplyBy(num);
 650         },
 651
 652         _multiplyBy: function (num) {
 653                 this.x *= num;
 654                 this.y *= num;
 655                 return this;
 656         },
 657
 658         round: function () {
 659                 return this.clone()._round();
 660         },
 661
 662         _round: function () {
 663                 this.x = Math.round(this.x);
 664                 this.y = Math.round(this.y);
 665                 return this;
 666         },
 667
 668         floor: function () {
 669                 return this.clone()._floor();
 670         },
 671
 672         _floor: function () {
 673                 this.x = Math.floor(this.x);
 674                 this.y = Math.floor(this.y);
 675                 return this;
 676         },
 677
 678         distanceTo: function (point) {
 679                 point = L.point(point);
 680
 681                 var x = point.x - this.x,
 682                     y = point.y - this.y;
 683
 684                 return Math.sqrt(x * x + y * y);
 685         },
 686
 687         equals: function (point) {
 688                 point = L.point(point);
 689
 690                 return point.x === this.x &&
 691                        point.y === this.y;
 692         },
 693
 694         contains: function (point) {
 695                 point = L.point(point);
 696
 697                 return Math.abs(point.x) <= Math.abs(this.x) &&
 698                        Math.abs(point.y) <= Math.abs(this.y);
 699         },
 700
 701         toString: function () {
 702                 return 'Point(' +
 703                         L.Util.formatNum(this.x) + ', ' +
 704                         L.Util.formatNum(this.y) + ')';
 705         }
 706 };
 707
 708 L.point = function (x, y, round) {
 709         if (x instanceof L.Point) {
 710                 return x;
 711         }
 712         if (L.Util.isArray(x)) {
 713                 return new L.Point(x[0], x[1]);
 714         }
 715         if (x === undefined || x === null) {
 716                 return x;
 717         }
 718         return new L.Point(x, y, round);
 719 };
 720
 721
 722 /*
 723  * L.Bounds represents a rectangular area on the screen in pixel coordinates.
 724  */
 725
 726 L.Bounds = function (a, b) { //(Point, Point) or Point[]
 727         if (!a) { return; }
 728
 729         var points = b ? [a, b] : a;
 730
 731         for (var i = 0, len = points.length; i < len; i++) {
 732                 this.extend(points[i]);
 733         }
 734 };
 735
 736 L.Bounds.prototype = {
 737         // extend the bounds to contain the given point
 738         extend: function (point) { // (Point)
 739                 point = L.point(point);
 740
 741                 if (!this.min && !this.max) {
 742                         this.min = point.clone();
 743                         this.max = point.clone();
 744                 } else {
 745                         this.min.x = Math.min(point.x, this.min.x);
 746                         this.max.x = Math.max(point.x, this.max.x);
 747                         this.min.y = Math.min(point.y, this.min.y);
 748                         this.max.y = Math.max(point.y, this.max.y);
 749                 }
 750                 return this;
 751         },
 752
 753         getCenter: function (round) { // (Boolean) -> Point
 754                 return new L.Point(
 755                         (this.min.x + this.max.x) / 2,
 756                         (this.min.y + this.max.y) / 2, round);
 757         },
 758
 759         getBottomLeft: function () { // -> Point
 760                 return new L.Point(this.min.x, this.max.y);
 761         },
 762
 763         getTopRight: function () { // -> Point
 764                 return new L.Point(this.max.x, this.min.y);
 765         },
 766
 767         getSize: function () {
 768                 return this.max.subtract(this.min);
 769         },
 770
 771         contains: function (obj) { // (Bounds) or (Point) -> Boolean
 772                 var min, max;
 773
 774                 if (typeof obj[0] === 'number' || obj instanceof L.Point) {
 775                         obj = L.point(obj);
 776                 } else {
 777                         obj = L.bounds(obj);
 778                 }
 779
 780                 if (obj instanceof L.Bounds) {
 781                         min = obj.min;
 782                         max = obj.max;
 783                 } else {
 784                         min = max = obj;
 785                 }
 786
 787                 return (min.x >= this.min.x) &&
 788                        (max.x <= this.max.x) &&
 789                        (min.y >= this.min.y) &&
 790                        (max.y <= this.max.y);
 791         },
 792
 793         intersects: function (bounds) { // (Bounds) -> Boolean
 794                 bounds = L.bounds(bounds);
 795
 796                 var min = this.min,
 797                     max = this.max,
 798                     min2 = bounds.min,
 799                     max2 = bounds.max,
 800                     xIntersects = (max2.x >= min.x) && (min2.x <= max.x),
 801                     yIntersects = (max2.y >= min.y) && (min2.y <= max.y);
 802
 803                 return xIntersects && yIntersects;
 804         },
 805
 806         isValid: function () {
 807                 return !!(this.min && this.max);
 808         }
 809 };
 810
 811 L.bounds = function (a, b) { // (Bounds) or (Point, Point) or (Point[])
 812         if (!a || a instanceof L.Bounds) {
 813                 return a;
 814         }
 815         return new L.Bounds(a, b);
 816 };
 817
 818
 819 /*
 820  * L.Transformation is an utility class to perform simple point transformations through a 2d-matrix.
 821  */
 822
 823 L.Transformation = function (a, b, c, d) {
 824         this._a = a;
 825         this._b = b;
 826         this._c = c;
 827         this._d = d;
 828 };
 829
 830 L.Transformation.prototype = {
 831         transform: function (point, scale) { // (Point, Number) -> Point
 832                 return this._transform(point.clone(), scale);
 833         },
 834
 835         // destructive transform (faster)
 836         _transform: function (point, scale) {
 837                 scale = scale || 1;
 838                 point.x = scale * (this._a * point.x + this._b);
 839                 point.y = scale * (this._c * point.y + this._d);
 840                 return point;
 841         },
 842
 843         untransform: function (point, scale) {
 844                 scale = scale || 1;
 845                 return new L.Point(
 846                         (point.x / scale - this._b) / this._a,
 847                         (point.y / scale - this._d) / this._c);
 848         }
 849 };
 850
 851
 852 /*
 853  * L.DomUtil contains various utility functions for working with DOM.
 854  */
 855
 856 L.DomUtil = {
 857         get: function (id) {
 858                 return (typeof id === 'string' ? document.getElementById(id) : id);
 859         },
 860
 861         getStyle: function (el, style) {
 862
 863                 var value = el.style[style];
 864
 865                 if (!value && el.currentStyle) {
 866                         value = el.currentStyle[style];
 867                 }
 868
 869                 if ((!value || value === 'auto') && document.defaultView) {
 870                         var css = document.defaultView.getComputedStyle(el, null);
 871                         value = css ? css[style] : null;
 872                 }
 873
 874                 return value === 'auto' ? null : value;
 875         },
 876
 877         getViewportOffset: function (element) {
 878
 879                 var top = 0,
 880                     left = 0,
 881                     el = element,
 882                     docBody = document.body,
 883                     docEl = document.documentElement,
 884                     pos,
 885                     ie7 = L.Browser.ie7;
 886
 887                 do {
 888                         top  += el.offsetTop  || 0;
 889                         left += el.offsetLeft || 0;
 890
 891                         //add borders
 892                         top += parseInt(L.DomUtil.getStyle(el, 'borderTopWidth'), 10) || 0;
 893                         left += parseInt(L.DomUtil.getStyle(el, 'borderLeftWidth'), 10) || 0;
 894
 895                         pos = L.DomUtil.getStyle(el, 'position');
 896
 897                         if (el.offsetParent === docBody && pos === 'absolute') { break; }
 898
 899                         if (pos === 'fixed') {
 900                                 top  += docBody.scrollTop  || docEl.scrollTop  || 0;
 901                                 left += docBody.scrollLeft || docEl.scrollLeft || 0;
 902                                 break;
 903                         }
 904
 905                         if (pos === 'relative' && !el.offsetLeft) {
 906                                 var width = L.DomUtil.getStyle(el, 'width'),
 907                                     maxWidth = L.DomUtil.getStyle(el, 'max-width'),
 908                                     r = el.getBoundingClientRect();
 909
 910                                 if (width !== 'none' || maxWidth !== 'none') {
 911                                         left += r.left + el.clientLeft;
 912                                 }
 913
 914                                 //calculate full y offset since we're breaking out of the loop
 915                                 top += r.top + (docBody.scrollTop  || docEl.scrollTop  || 0);
 916
 917                                 break;
 918                         }
 919
 920                         el = el.offsetParent;
 921
 922                 } while (el);
 923
 924                 el = element;
 925
 926                 do {
 927                         if (el === docBody) { break; }
 928
 929                         top  -= el.scrollTop  || 0;
 930                         left -= el.scrollLeft || 0;
 931
 932                         // webkit (and ie <= 7) handles RTL scrollLeft different to everyone else
 933                         // https://code.google.com/p/closure-library/source/browse/trunk/closure/goog/style/bidi.js
 934                         if (!L.DomUtil.documentIsLtr() && (L.Browser.webkit || ie7)) {
 935                                 left += el.scrollWidth - el.clientWidth;
 936
 937                                 // ie7 shows the scrollbar by default and provides clientWidth counting it, so we
 938                                 // need to add it back in if it is visible; scrollbar is on the left as we are RTL
 939                                 if (ie7 && L.DomUtil.getStyle(el, 'overflow-y') !== 'hidden' &&
 940                                            L.DomUtil.getStyle(el, 'overflow') !== 'hidden') {
 941                                         left += 17;
 942                                 }
 943                         }
 944
 945                         el = el.parentNode;
 946                 } while (el);
 947
 948                 return new L.Point(left, top);
 949         },
 950
 951         documentIsLtr: function () {
 952                 if (!L.DomUtil._docIsLtrCached) {
 953                         L.DomUtil._docIsLtrCached = true;
 954                         L.DomUtil._docIsLtr = L.DomUtil.getStyle(document.body, 'direction') === 'ltr';
 955                 }
 956                 return L.DomUtil._docIsLtr;
 957         },
 958
 959         create: function (tagName, className, container) {
 960
 961                 var el = document.createElement(tagName);
 962                 el.className = className;
 963
 964                 if (container) {
 965                         container.appendChild(el);
 966                 }
 967
 968                 return el;
 969         },
 970
 971         hasClass: function (el, name) {
 972                 return (el.className.length > 0) &&
 973                         new RegExp('(^|\\s)' + name + '(\\s|$)').test(el.className);
 974         },
 975
 976         addClass: function (el, name) {
 977                 if (!L.DomUtil.hasClass(el, name)) {
 978                         el.className += (el.className ? ' ' : '') + name;
 979                 }
 980         },
 981
 982         removeClass: function (el, name) {
 983                 el.className = L.Util.trim((' ' + el.className + ' ').replace(' ' + name + ' ', ' '));
 984         },
 985
 986         setOpacity: function (el, value) {
 987
 988                 if ('opacity' in el.style) {
 989                         el.style.opacity = value;
 990
 991                 } else if ('filter' in el.style) {
 992
 993                         var filter = false,
 994                             filterName = 'DXImageTransform.Microsoft.Alpha';
 995
 996                         // filters collection throws an error if we try to retrieve a filter that doesn't exist
 997                         try {
 998                                 filter = el.filters.item(filterName);
 999                         } catch (e) {
1000                                 // don't set opacity to 1 if we haven't already set an opacity,
1001                                 // it isn't needed and breaks transparent pngs.
1002                                 if (value === 1) { return; }
1003                         }
1004
1005                         value = Math.round(value * 100);
1006
1007                         if (filter) {
1008                                 filter.Enabled = (value !== 100);
1009                                 filter.Opacity = value;
1010                         } else {
1011                                 el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')';
1012                         }
1013                 }
1014         },
1015
1016         testProp: function (props) {
1017
1018                 var style = document.documentElement.style;
1019
1020                 for (var i = 0; i < props.length; i++) {
1021                         if (props[i] in style) {
1022                                 return props[i];
1023                         }
1024                 }
1025                 return false;
1026         },
1027
1028         getTranslateString: function (point) {
1029                 // on WebKit browsers (Chrome/Safari/iOS Safari/Android) using translate3d instead of translate
1030                 // makes animation smoother as it ensures HW accel is used. Firefox 13 doesn't care
1031                 // (same speed either way), Opera 12 doesn't support translate3d
1032
1033                 var is3d = L.Browser.webkit3d,
1034                     open = 'translate' + (is3d ? '3d' : '') + '(',
1035                     close = (is3d ? ',0' : '') + ')';
1036
1037                 return open + point.x + 'px,' + point.y + 'px' + close;
1038         },
1039
1040         getScaleString: function (scale, origin) {
1041
1042                 var preTranslateStr = L.DomUtil.getTranslateString(origin.add(origin.multiplyBy(-1 * scale))),
1043                     scaleStr = ' scale(' + scale + ') ';
1044
1045                 return preTranslateStr + scaleStr;
1046         },
1047
1048         setPosition: function (el, point, disable3D) { // (HTMLElement, Point[, Boolean])
1049
1050                 // jshint camelcase: false
1051                 el._leaflet_pos = point;
1052
1053                 if (!disable3D && L.Browser.any3d) {
1054                         el.style[L.DomUtil.TRANSFORM] =  L.DomUtil.getTranslateString(point);
1055
1056                         // workaround for Android 2/3 stability (https://github.com/CloudMade/Leaflet/issues/69)
1057                         if (L.Browser.mobileWebkit3d) {
1058                                 el.style.WebkitBackfaceVisibility = 'hidden';
1059                         }
1060                 } else {
1061                         el.style.left = point.x + 'px';
1062                         el.style.top = point.y + 'px';
1063                 }
1064         },
1065
1066         getPosition: function (el) {
1067                 // this method is only used for elements previously positioned using setPosition,
1068                 // so it's safe to cache the position for performance
1069
1070                 // jshint camelcase: false
1071                 return el._leaflet_pos;
1072         }
1073 };
1074
1075
1076 // prefix style property names
1077
1078 L.DomUtil.TRANSFORM = L.DomUtil.testProp(
1079         ['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']);
1080
1081 // webkitTransition comes first because some browser versions that drop vendor prefix don't do
1082 // the same for the transitionend event, in particular the Android 4.1 stock browser
1083
1084 L.DomUtil.TRANSITION = L.DomUtil.testProp(
1085         ['webkitTransition', 'transition', 'OTransition', 'MozTransition', 'msTransition']);
1086
1087 L.DomUtil.TRANSITION_END =
1088         L.DomUtil.TRANSITION === 'webkitTransition' || L.DomUtil.TRANSITION === 'OTransition' ?
1089         L.DomUtil.TRANSITION + 'End' : 'transitionend';
1090
1091 (function () {
1092         var userSelectProperty = L.DomUtil.testProp(
1093                 ['userSelect', 'WebkitUserSelect', 'OUserSelect', 'MozUserSelect', 'msUserSelect']);
1094
1095         L.extend(L.DomUtil, {
1096                 disableTextSelection: function () {
1097                         L.DomEvent.on(window, 'selectstart', L.DomEvent.preventDefault);
1098                         if (userSelectProperty) {
1099                                 var style = document.documentElement.style;
1100                                 this._userSelect = style[userSelectProperty];
1101                                 style[userSelectProperty] = 'none';
1102                         }
1103                 },
1104
1105                 enableTextSelection: function () {
1106                         L.DomEvent.off(window, 'selectstart', L.DomEvent.preventDefault);
1107                         if (userSelectProperty) {
1108                                 document.documentElement.style[userSelectProperty] = this._userSelect;
1109                                 delete this._userSelect;
1110                         }
1111                 },
1112
1113                 disableImageDrag: function () {
1114                         L.DomEvent.on(window, 'dragstart', L.DomEvent.preventDefault);
1115                 },
1116
1117                 enableImageDrag: function () {
1118                         L.DomEvent.off(window, 'dragstart', L.DomEvent.preventDefault);
1119                 }
1120         });
1121 })();
1122
1123
1124 /*
1125  * L.LatLng represents a geographical point with latitude and longitude coordinates.
1126  */
1127
1128 L.LatLng = function (rawLat, rawLng) { // (Number, Number)
1129         var lat = parseFloat(rawLat),
1130             lng = parseFloat(rawLng);
1131
1132         if (isNaN(lat) || isNaN(lng)) {
1133                 throw new Error('Invalid LatLng object: (' + rawLat + ', ' + rawLng + ')');
1134         }
1135
1136         this.lat = lat;
1137         this.lng = lng;
1138 };
1139
1140 L.extend(L.LatLng, {
1141         DEG_TO_RAD: Math.PI / 180,
1142         RAD_TO_DEG: 180 / Math.PI,
1143         MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check
1144 });
1145
1146 L.LatLng.prototype = {
1147         equals: function (obj) { // (LatLng) -> Boolean
1148                 if (!obj) { return false; }
1149
1150                 obj = L.latLng(obj);
1151
1152                 var margin = Math.max(
1153                         Math.abs(this.lat - obj.lat),
1154                         Math.abs(this.lng - obj.lng));
1155
1156                 return margin <= L.LatLng.MAX_MARGIN;
1157         },
1158
1159         toString: function (precision) { // (Number) -> String
1160                 return 'LatLng(' +
1161                         L.Util.formatNum(this.lat, precision) + ', ' +
1162                         L.Util.formatNum(this.lng, precision) + ')';
1163         },
1164
1165         // Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula
1166         // TODO move to projection code, LatLng shouldn't know about Earth
1167         distanceTo: function (other) { // (LatLng) -> Number
1168                 other = L.latLng(other);
1169
1170                 var R = 6378137, // earth radius in meters
1171                     d2r = L.LatLng.DEG_TO_RAD,
1172                     dLat = (other.lat - this.lat) * d2r,
1173                     dLon = (other.lng - this.lng) * d2r,
1174                     lat1 = this.lat * d2r,
1175                     lat2 = other.lat * d2r,
1176                     sin1 = Math.sin(dLat / 2),
1177                     sin2 = Math.sin(dLon / 2);
1178
1179                 var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2);
1180
1181                 return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
1182         },
1183
1184         wrap: function (a, b) { // (Number, Number) -> LatLng
1185                 var lng = this.lng;
1186
1187                 a = a || -180;
1188                 b = b ||  180;
1189
1190                 lng = (lng + b) % (b - a) + (lng < a || lng === b ? b : a);
1191
1192                 return new L.LatLng(this.lat, lng);
1193         }
1194 };
1195
1196 L.latLng = function (a, b) { // (LatLng) or ([Number, Number]) or (Number, Number)
1197         if (a instanceof L.LatLng) {
1198                 return a;
1199         }
1200         if (L.Util.isArray(a)) {
1201                 return new L.LatLng(a[0], a[1]);
1202         }
1203         if (a === undefined || a === null) {
1204                 return a;
1205         }
1206         if (typeof a === 'object' && 'lat' in a) {
1207                 return new L.LatLng(a.lat, 'lng' in a ? a.lng : a.lon);
1208         }
1209         return new L.LatLng(a, b);
1210 };
1211
1212
1213
1214 /*
1215  * L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
1216  */
1217
1218 L.LatLngBounds = function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[])
1219         if (!southWest) { return; }
1220
1221         var latlngs = northEast ? [southWest, northEast] : southWest;
1222
1223         for (var i = 0, len = latlngs.length; i < len; i++) {
1224                 this.extend(latlngs[i]);
1225         }
1226 };
1227
1228 L.LatLngBounds.prototype = {
1229         // extend the bounds to contain the given point or bounds
1230         extend: function (obj) { // (LatLng) or (LatLngBounds)
1231                 if (!obj) { return this; }
1232
1233                 if (typeof obj[0] === 'number' || typeof obj[0] === 'string' || obj instanceof L.LatLng) {
1234                         obj = L.latLng(obj);
1235                 } else {
1236                         obj = L.latLngBounds(obj);
1237                 }
1238
1239                 if (obj instanceof L.LatLng) {
1240                         if (!this._southWest && !this._northEast) {
1241                                 this._southWest = new L.LatLng(obj.lat, obj.lng);
1242                                 this._northEast = new L.LatLng(obj.lat, obj.lng);
1243                         } else {
1244                                 this._southWest.lat = Math.min(obj.lat, this._southWest.lat);
1245                                 this._southWest.lng = Math.min(obj.lng, this._southWest.lng);
1246
1247                                 this._northEast.lat = Math.max(obj.lat, this._northEast.lat);
1248                                 this._northEast.lng = Math.max(obj.lng, this._northEast.lng);
1249                         }
1250                 } else if (obj instanceof L.LatLngBounds) {
1251                         this.extend(obj._southWest);
1252                         this.extend(obj._northEast);
1253                 }
1254                 return this;
1255         },
1256
1257         // extend the bounds by a percentage
1258         pad: function (bufferRatio) { // (Number) -> LatLngBounds
1259                 var sw = this._southWest,
1260                     ne = this._northEast,
1261                     heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio,
1262                     widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio;
1263
1264                 return new L.LatLngBounds(
1265                         new L.LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer),
1266                         new L.LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer));
1267         },
1268
1269         getCenter: function () { // -> LatLng
1270                 return new L.LatLng(
1271                         (this._southWest.lat + this._northEast.lat) / 2,
1272                         (this._southWest.lng + this._northEast.lng) / 2);
1273         },
1274
1275         getSouthWest: function () {
1276                 return this._southWest;
1277         },
1278
1279         getNorthEast: function () {
1280                 return this._northEast;
1281         },
1282
1283         getNorthWest: function () {
1284                 return new L.LatLng(this.getNorth(), this.getWest());
1285         },
1286
1287         getSouthEast: function () {
1288                 return new L.LatLng(this.getSouth(), this.getEast());
1289         },
1290
1291         getWest: function () {
1292                 return this._southWest.lng;
1293         },
1294
1295         getSouth: function () {
1296                 return this._southWest.lat;
1297         },
1298
1299         getEast: function () {
1300                 return this._northEast.lng;
1301         },
1302
1303         getNorth: function () {
1304                 return this._northEast.lat;
1305         },
1306
1307         contains: function (obj) { // (LatLngBounds) or (LatLng) -> Boolean
1308                 if (typeof obj[0] === 'number' || obj instanceof L.LatLng) {
1309                         obj = L.latLng(obj);
1310                 } else {
1311                         obj = L.latLngBounds(obj);
1312                 }
1313
1314                 var sw = this._southWest,
1315                     ne = this._northEast,
1316                     sw2, ne2;
1317
1318                 if (obj instanceof L.LatLngBounds) {
1319                         sw2 = obj.getSouthWest();
1320                         ne2 = obj.getNorthEast();
1321                 } else {
1322                         sw2 = ne2 = obj;
1323                 }
1324
1325                 return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
1326                        (sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
1327         },
1328
1329         intersects: function (bounds) { // (LatLngBounds)
1330                 bounds = L.latLngBounds(bounds);
1331
1332                 var sw = this._southWest,
1333                     ne = this._northEast,
1334                     sw2 = bounds.getSouthWest(),
1335                     ne2 = bounds.getNorthEast(),
1336
1337                     latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat),
1338                     lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng);
1339
1340                 return latIntersects && lngIntersects;
1341         },
1342
1343         toBBoxString: function () {
1344                 return [this.getWest(), this.getSouth(), this.getEast(), this.getNorth()].join(',');
1345         },
1346
1347         equals: function (bounds) { // (LatLngBounds)
1348                 if (!bounds) { return false; }
1349
1350                 bounds = L.latLngBounds(bounds);
1351
1352                 return this._southWest.equals(bounds.getSouthWest()) &&
1353                        this._northEast.equals(bounds.getNorthEast());
1354         },
1355
1356         isValid: function () {
1357                 return !!(this._southWest && this._northEast);
1358         }
1359 };
1360
1361 //TODO International date line?
1362
1363 L.latLngBounds = function (a, b) { // (LatLngBounds) or (LatLng, LatLng)
1364         if (!a || a instanceof L.LatLngBounds) {
1365                 return a;
1366         }
1367         return new L.LatLngBounds(a, b);
1368 };
1369
1370
1371 /*
1372  * L.Projection contains various geographical projections used by CRS classes.
1373  */
1374
1375 L.Projection = {};
1376
1377
1378 /*
1379  * Spherical Mercator is the most popular map projection, used by EPSG:3857 CRS used by default.
1380  */
1381
1382 L.Projection.SphericalMercator = {
1383         MAX_LATITUDE: 85.0511287798,
1384
1385         project: function (latlng) { // (LatLng) -> Point
1386                 var d = L.LatLng.DEG_TO_RAD,
1387                     max = this.MAX_LATITUDE,
1388                     lat = Math.max(Math.min(max, latlng.lat), -max),
1389                     x = latlng.lng * d,
1390                     y = lat * d;
1391
1392                 y = Math.log(Math.tan((Math.PI / 4) + (y / 2)));
1393
1394                 return new L.Point(x, y);
1395         },
1396
1397         unproject: function (point) { // (Point, Boolean) -> LatLng
1398                 var d = L.LatLng.RAD_TO_DEG,
1399                     lng = point.x * d,
1400                     lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d;
1401
1402                 return new L.LatLng(lat, lng);
1403         }
1404 };
1405
1406
1407 /*
1408  * Simple equirectangular (Plate Carree) projection, used by CRS like EPSG:4326 and Simple.
1409  */
1410
1411 L.Projection.LonLat = {
1412         project: function (latlng) {
1413                 return new L.Point(latlng.lng, latlng.lat);
1414         },
1415
1416         unproject: function (point) {
1417                 return new L.LatLng(point.y, point.x);
1418         }
1419 };
1420
1421
1422 /*
1423  * L.CRS is a base object for all defined CRS (Coordinate Reference Systems) in Leaflet.
1424  */
1425
1426 L.CRS = {
1427         latLngToPoint: function (latlng, zoom) { // (LatLng, Number) -> Point
1428                 var projectedPoint = this.projection.project(latlng),
1429                     scale = this.scale(zoom);
1430
1431                 return this.transformation._transform(projectedPoint, scale);
1432         },
1433
1434         pointToLatLng: function (point, zoom) { // (Point, Number[, Boolean]) -> LatLng
1435                 var scale = this.scale(zoom),
1436                     untransformedPoint = this.transformation.untransform(point, scale);
1437
1438                 return this.projection.unproject(untransformedPoint);
1439         },
1440
1441         project: function (latlng) {
1442                 return this.projection.project(latlng);
1443         },
1444
1445         scale: function (zoom) {
1446                 return 256 * Math.pow(2, zoom);
1447         }
1448 };
1449
1450
1451 /*
1452  * A simple CRS that can be used for flat non-Earth maps like panoramas or game maps.
1453  */
1454
1455 L.CRS.Simple = L.extend({}, L.CRS, {
1456         projection: L.Projection.LonLat,
1457         transformation: new L.Transformation(1, 0, -1, 0),
1458
1459         scale: function (zoom) {
1460                 return Math.pow(2, zoom);
1461         }
1462 });
1463
1464
1465 /*
1466  * L.CRS.EPSG3857 (Spherical Mercator) is the most common CRS for web mapping
1467  * and is used by Leaflet by default.
1468  */
1469
1470 L.CRS.EPSG3857 = L.extend({}, L.CRS, {
1471         code: 'EPSG:3857',
1472
1473         projection: L.Projection.SphericalMercator,
1474         transformation: new L.Transformation(0.5 / Math.PI, 0.5, -0.5 / Math.PI, 0.5),
1475
1476         project: function (latlng) { // (LatLng) -> Point
1477                 var projectedPoint = this.projection.project(latlng),
1478                     earthRadius = 6378137;
1479                 return projectedPoint.multiplyBy(earthRadius);
1480         }
1481 });
1482
1483 L.CRS.EPSG900913 = L.extend({}, L.CRS.EPSG3857, {
1484         code: 'EPSG:900913'
1485 });
1486
1487
1488 /*
1489  * L.CRS.EPSG4326 is a CRS popular among advanced GIS specialists.
1490  */
1491
1492 L.CRS.EPSG4326 = L.extend({}, L.CRS, {
1493         code: 'EPSG:4326',
1494
1495         projection: L.Projection.LonLat,
1496         transformation: new L.Transformation(1 / 360, 0.5, -1 / 360, 0.5)
1497 });
1498
1499
1500 /*
1501  * L.Map is the central class of the API - it is used to create a map.
1502  */
1503
1504 L.Map = L.Class.extend({
1505
1506         includes: L.Mixin.Events,
1507
1508         options: {
1509                 crs: L.CRS.EPSG3857,
1510
1511                 /*
1512                 center: LatLng,
1513                 zoom: Number,
1514                 layers: Array,
1515                 */
1516
1517                 fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android23,
1518                 trackResize: true,
1519                 markerZoomAnimation: L.DomUtil.TRANSITION && L.Browser.any3d
1520         },
1521
1522         initialize: function (id, options) { // (HTMLElement or String, Object)
1523                 options = L.setOptions(this, options);
1524
1525                 this._initContainer(id);
1526                 this._initLayout();
1527                 this._initEvents();
1528
1529                 if (options.maxBounds) {
1530                         this.setMaxBounds(options.maxBounds);
1531                 }
1532
1533                 if (options.center && options.zoom !== undefined) {
1534                         this.setView(L.latLng(options.center), options.zoom, {reset: true});
1535                 }
1536
1537                 this._handlers = [];
1538
1539                 this._layers = {};
1540                 this._zoomBoundLayers = {};
1541                 this._tileLayersNum = 0;
1542
1543                 this.callInitHooks();
1544
1545                 this._addLayers(options.layers);
1546         },
1547
1548
1549         // public methods that modify map state
1550
1551         // replaced by animation-powered implementation in Map.PanAnimation.js
1552         setView: function (center, zoom) {
1553                 this._resetView(L.latLng(center), this._limitZoom(zoom));
1554                 return this;
1555         },
1556
1557         setZoom: function (zoom, options) {
1558                 return this.setView(this.getCenter(), zoom, {zoom: options});
1559         },
1560
1561         zoomIn: function (delta, options) {
1562                 return this.setZoom(this._zoom + (delta || 1), options);
1563         },
1564
1565         zoomOut: function (delta, options) {
1566                 return this.setZoom(this._zoom - (delta || 1), options);
1567         },
1568
1569         setZoomAround: function (latlng, zoom, options) {
1570                 var scale = this.getZoomScale(zoom),
1571                     viewHalf = this.getSize().divideBy(2),
1572                     containerPoint = latlng instanceof L.Point ? latlng : this.latLngToContainerPoint(latlng),
1573
1574                     centerOffset = containerPoint.subtract(viewHalf).multiplyBy(1 - 1 / scale),
1575                     newCenter = this.containerPointToLatLng(viewHalf.add(centerOffset));
1576
1577                 return this.setView(newCenter, zoom, {zoom: options});
1578         },
1579
1580         fitBounds: function (bounds, options) {
1581
1582                 options = options || {};
1583                 bounds = bounds.getBounds ? bounds.getBounds() : L.latLngBounds(bounds);
1584
1585                 var paddingTL = L.point(options.paddingTopLeft || options.padding || [0, 0]),
1586                     paddingBR = L.point(options.paddingBottomRight || options.padding || [0, 0]),
1587
1588                     zoom = this.getBoundsZoom(bounds, false, paddingTL.add(paddingBR)),
1589                     paddingOffset = paddingBR.subtract(paddingTL).divideBy(2),
1590
1591                     swPoint = this.project(bounds.getSouthWest(), zoom),
1592                     nePoint = this.project(bounds.getNorthEast(), zoom),
1593                     center = this.unproject(swPoint.add(nePoint).divideBy(2).add(paddingOffset), zoom);
1594
1595                 return this.setView(center, zoom, options);
1596         },
1597
1598         fitWorld: function (options) {
1599                 return this.fitBounds([[-90, -180], [90, 180]], options);
1600         },
1601
1602         panTo: function (center, options) { // (LatLng)
1603                 return this.setView(center, this._zoom, {pan: options});
1604         },
1605
1606         panBy: function (offset) { // (Point)
1607                 // replaced with animated panBy in Map.Animation.js
1608                 this.fire('movestart');
1609
1610                 this._rawPanBy(L.point(offset));
1611
1612                 this.fire('move');
1613                 return this.fire('moveend');
1614         },
1615
1616         setMaxBounds: function (bounds, options) {
1617                 bounds = L.latLngBounds(bounds);
1618
1619                 this.options.maxBounds = bounds;
1620
1621                 if (!bounds) {
1622                         this._boundsMinZoom = null;
1623                         this.off('moveend', this._panInsideMaxBounds, this);
1624                         return this;
1625                 }
1626
1627                 var minZoom = this.getBoundsZoom(bounds, true);
1628
1629                 this._boundsMinZoom = minZoom;
1630
1631                 if (this._loaded) {
1632                         if (this._zoom < minZoom) {
1633                                 this.setView(bounds.getCenter(), minZoom, options);
1634                         } else {
1635                                 this.panInsideBounds(bounds);
1636                         }
1637                 }
1638
1639                 this.on('moveend', this._panInsideMaxBounds, this);
1640
1641                 return this;
1642         },
1643
1644         panInsideBounds: function (bounds) {
1645                 bounds = L.latLngBounds(bounds);
1646
1647                 var viewBounds = this.getPixelBounds(),
1648                     viewSw = viewBounds.getBottomLeft(),
1649                     viewNe = viewBounds.getTopRight(),
1650                     sw = this.project(bounds.getSouthWest()),
1651                     ne = this.project(bounds.getNorthEast()),
1652                     dx = 0,
1653                     dy = 0;
1654
1655                 if (viewNe.y < ne.y) { // north
1656                         dy = Math.ceil(ne.y - viewNe.y);
1657                 }
1658                 if (viewNe.x > ne.x) { // east
1659                         dx = Math.floor(ne.x - viewNe.x);
1660                 }
1661                 if (viewSw.y > sw.y) { // south
1662                         dy = Math.floor(sw.y - viewSw.y);
1663                 }
1664                 if (viewSw.x < sw.x) { // west
1665                         dx = Math.ceil(sw.x - viewSw.x);
1666                 }
1667
1668                 if (dx || dy) {
1669                         return this.panBy([dx, dy]);
1670                 }
1671
1672                 return this;
1673         },
1674
1675         addLayer: function (layer) {
1676                 // TODO method is too big, refactor
1677
1678                 var id = L.stamp(layer);
1679
1680                 if (this._layers[id]) { return this; }
1681
1682                 this._layers[id] = layer;
1683
1684                 // TODO getMaxZoom, getMinZoom in ILayer (instead of options)
1685                 if (layer.options && (!isNaN(layer.options.maxZoom) || !isNaN(layer.options.minZoom))) {
1686                         this._zoomBoundLayers[id] = layer;
1687                         this._updateZoomLevels();
1688                 }
1689
1690                 // TODO looks ugly, refactor!!!
1691                 if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
1692                         this._tileLayersNum++;
1693                         this._tileLayersToLoad++;
1694                         layer.on('load', this._onTileLayerLoad, this);
1695                 }
1696
1697                 if (this._loaded) {
1698                         this._layerAdd(layer);
1699                 }
1700
1701                 return this;
1702         },
1703
1704         removeLayer: function (layer) {
1705                 var id = L.stamp(layer);
1706
1707                 if (!this._layers[id]) { return; }
1708
1709                 if (this._loaded) {
1710                         layer.onRemove(this);
1711                 }
1712
1713                 delete this._layers[id];
1714
1715                 if (this._loaded) {
1716                         this.fire('layerremove', {layer: layer});
1717                 }
1718
1719                 if (this._zoomBoundLayers[id]) {
1720                         delete this._zoomBoundLayers[id];
1721                         this._updateZoomLevels();
1722                 }
1723
1724                 // TODO looks ugly, refactor
1725                 if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
1726                         this._tileLayersNum--;
1727                         this._tileLayersToLoad--;
1728                         layer.off('load', this._onTileLayerLoad, this);
1729                 }
1730
1731                 return this;
1732         },
1733
1734         hasLayer: function (layer) {
1735                 if (!layer) { return false; }
1736
1737                 return (L.stamp(layer) in this._layers);
1738         },
1739
1740         eachLayer: function (method, context) {
1741                 for (var i in this._layers) {
1742                         method.call(context, this._layers[i]);
1743                 }
1744                 return this;
1745         },
1746
1747         invalidateSize: function (options) {
1748                 options = L.extend({
1749                         animate: false,
1750                         pan: true
1751                 }, options === true ? {animate: true} : options);
1752
1753                 var oldSize = this.getSize();
1754                 this._sizeChanged = true;
1755
1756                 if (this.options.maxBounds) {
1757                         this.setMaxBounds(this.options.maxBounds);
1758                 }
1759
1760                 if (!this._loaded) { return this; }
1761
1762                 var newSize = this.getSize(),
1763                     offset = oldSize.subtract(newSize).divideBy(2).round();
1764
1765                 if (!offset.x && !offset.y) { return this; }
1766
1767                 if (options.animate && options.pan) {
1768                         this.panBy(offset);
1769
1770                 } else {
1771                         if (options.pan) {
1772                                 this._rawPanBy(offset);
1773                         }
1774
1775                         this.fire('move');
1776
1777                         // make sure moveend is not fired too often on resize
1778                         clearTimeout(this._sizeTimer);
1779                         this._sizeTimer = setTimeout(L.bind(this.fire, this, 'moveend'), 200);
1780                 }
1781
1782                 return this.fire('resize', {
1783                         oldSize: oldSize,
1784                         newSize: newSize
1785                 });
1786         },
1787
1788         // TODO handler.addTo
1789         addHandler: function (name, HandlerClass) {
1790                 if (!HandlerClass) { return; }
1791
1792                 var handler = this[name] = new HandlerClass(this);
1793
1794                 this._handlers.push(handler);
1795
1796                 if (this.options[name]) {
1797                         handler.enable();
1798                 }
1799
1800                 return this;
1801         },
1802
1803         remove: function () {
1804                 if (this._loaded) {
1805                         this.fire('unload');
1806                 }
1807
1808                 this._initEvents('off');
1809
1810                 delete this._container._leaflet;
1811
1812                 this._clearPanes();
1813                 if (this._clearControlPos) {
1814                         this._clearControlPos();
1815                 }
1816
1817                 this._clearHandlers();
1818
1819                 return this;
1820         },
1821
1822
1823         // public methods for getting map state
1824
1825         getCenter: function () { // (Boolean) -> LatLng
1826                 this._checkIfLoaded();
1827
1828                 if (!this._moved()) {
1829                         return this._initialCenter;
1830                 }
1831                 return this.layerPointToLatLng(this._getCenterLayerPoint());
1832         },
1833
1834         getZoom: function () {
1835                 return this._zoom;
1836         },
1837
1838         getBounds: function () {
1839                 var bounds = this.getPixelBounds(),
1840                     sw = this.unproject(bounds.getBottomLeft()),
1841                     ne = this.unproject(bounds.getTopRight());
1842
1843                 return new L.LatLngBounds(sw, ne);
1844         },
1845
1846         getMinZoom: function () {
1847                 var z1 = this._layersMinZoom === undefined ? -Infinity : this._layersMinZoom,
1848                     z2 = this._boundsMinZoom === undefined ? -Infinity : this._boundsMinZoom;
1849                 return this.options.minZoom === undefined ? Math.max(z1, z2) : this.options.minZoom;
1850         },
1851
1852         getMaxZoom: function () {
1853                 return this.options.maxZoom === undefined ?
1854                         (this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom) :
1855                         this.options.maxZoom;
1856         },
1857
1858         getBoundsZoom: function (bounds, inside, padding) { // (LatLngBounds[, Boolean, Point]) -> Number
1859                 bounds = L.latLngBounds(bounds);
1860
1861                 var zoom = this.getMinZoom() - (inside ? 1 : 0),
1862                     maxZoom = this.getMaxZoom(),
1863                     size = this.getSize(),
1864
1865                     nw = bounds.getNorthWest(),
1866                     se = bounds.getSouthEast(),
1867
1868                     zoomNotFound = true,
1869                     boundsSize;
1870
1871                 padding = L.point(padding || [0, 0]);
1872
1873                 do {
1874                         zoom++;
1875                         boundsSize = this.project(se, zoom).subtract(this.project(nw, zoom)).add(padding);
1876                         zoomNotFound = !inside ? size.contains(boundsSize) : boundsSize.x < size.x || boundsSize.y < size.y;
1877
1878                 } while (zoomNotFound && zoom <= maxZoom);
1879
1880                 if (zoomNotFound && inside) {
1881                         return null;
1882                 }
1883
1884                 return inside ? zoom : zoom - 1;
1885         },
1886
1887         getSize: function () {
1888                 if (!this._size || this._sizeChanged) {
1889                         this._size = new L.Point(
1890                                 this._container.clientWidth,
1891                                 this._container.clientHeight);
1892
1893                         this._sizeChanged = false;
1894                 }
1895                 return this._size.clone();
1896         },
1897
1898         getPixelBounds: function () {
1899                 var topLeftPoint = this._getTopLeftPoint();
1900                 return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
1901         },
1902
1903         getPixelOrigin: function () {
1904                 this._checkIfLoaded();
1905                 return this._initialTopLeftPoint;
1906         },
1907
1908         getPanes: function () {
1909                 return this._panes;
1910         },
1911
1912         getContainer: function () {
1913                 return this._container;
1914         },
1915
1916
1917         // TODO replace with universal implementation after refactoring projections
1918
1919         getZoomScale: function (toZoom) {
1920                 var crs = this.options.crs;
1921                 return crs.scale(toZoom) / crs.scale(this._zoom);
1922         },
1923
1924         getScaleZoom: function (scale) {
1925                 return this._zoom + (Math.log(scale) / Math.LN2);
1926         },
1927
1928
1929         // conversion methods
1930
1931         project: function (latlng, zoom) { // (LatLng[, Number]) -> Point
1932                 zoom = zoom === undefined ? this._zoom : zoom;
1933                 return this.options.crs.latLngToPoint(L.latLng(latlng), zoom);
1934         },
1935
1936         unproject: function (point, zoom) { // (Point[, Number]) -> LatLng
1937                 zoom = zoom === undefined ? this._zoom : zoom;
1938                 return this.options.crs.pointToLatLng(L.point(point), zoom);
1939         },
1940
1941         layerPointToLatLng: function (point) { // (Point)
1942                 var projectedPoint = L.point(point).add(this.getPixelOrigin());
1943                 return this.unproject(projectedPoint);
1944         },
1945
1946         latLngToLayerPoint: function (latlng) { // (LatLng)
1947                 var projectedPoint = this.project(L.latLng(latlng))._round();
1948                 return projectedPoint._subtract(this.getPixelOrigin());
1949         },
1950
1951         containerPointToLayerPoint: function (point) { // (Point)
1952                 return L.point(point).subtract(this._getMapPanePos());
1953         },
1954
1955         layerPointToContainerPoint: function (point) { // (Point)
1956                 return L.point(point).add(this._getMapPanePos());
1957         },
1958
1959         containerPointToLatLng: function (point) {
1960                 var layerPoint = this.containerPointToLayerPoint(L.point(point));
1961                 return this.layerPointToLatLng(layerPoint);
1962         },
1963
1964         latLngToContainerPoint: function (latlng) {
1965                 return this.layerPointToContainerPoint(this.latLngToLayerPoint(L.latLng(latlng)));
1966         },
1967
1968         mouseEventToContainerPoint: function (e) { // (MouseEvent)
1969                 return L.DomEvent.getMousePosition(e, this._container);
1970         },
1971
1972         mouseEventToLayerPoint: function (e) { // (MouseEvent)
1973                 return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
1974         },
1975
1976         mouseEventToLatLng: function (e) { // (MouseEvent)
1977                 return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
1978         },
1979
1980
1981         // map initialization methods
1982
1983         _initContainer: function (id) {
1984                 var container = this._container = L.DomUtil.get(id);
1985
1986                 if (!container) {
1987                         throw new Error('Map container not found.');
1988                 } else if (container._leaflet) {
1989                         throw new Error('Map container is already initialized.');
1990                 }
1991
1992                 container._leaflet = true;
1993         },
1994
1995         _initLayout: function () {
1996                 var container = this._container;
1997
1998                 L.DomUtil.addClass(container, 'leaflet-container' +
1999                         (L.Browser.touch ? ' leaflet-touch' : '') +
2000                         (L.Browser.retina ? ' leaflet-retina' : '') +
2001                         (this.options.fadeAnimation ? ' leaflet-fade-anim' : ''));
2002
2003                 var position = L.DomUtil.getStyle(container, 'position');
2004
2005                 if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') {
2006                         container.style.position = 'relative';
2007                 }
2008
2009                 this._initPanes();
2010
2011                 if (this._initControlPos) {
2012                         this._initControlPos();
2013                 }
2014         },
2015
2016         _initPanes: function () {
2017                 var panes = this._panes = {};
2018
2019                 this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container);
2020
2021                 this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane);
2022                 panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane);
2023                 panes.shadowPane = this._createPane('leaflet-shadow-pane');
2024                 panes.overlayPane = this._createPane('leaflet-overlay-pane');
2025                 panes.markerPane = this._createPane('leaflet-marker-pane');
2026                 panes.popupPane = this._createPane('leaflet-popup-pane');
2027
2028                 var zoomHide = ' leaflet-zoom-hide';
2029
2030                 if (!this.options.markerZoomAnimation) {
2031                         L.DomUtil.addClass(panes.markerPane, zoomHide);
2032                         L.DomUtil.addClass(panes.shadowPane, zoomHide);
2033                         L.DomUtil.addClass(panes.popupPane, zoomHide);
2034                 }
2035         },
2036
2037         _createPane: function (className, container) {
2038                 return L.DomUtil.create('div', className, container || this._panes.objectsPane);
2039         },
2040
2041         _clearPanes: function () {
2042                 this._container.removeChild(this._mapPane);
2043         },
2044
2045         _addLayers: function (layers) {
2046                 layers = layers ? (L.Util.isArray(layers) ? layers : [layers]) : [];
2047
2048                 for (var i = 0, len = layers.length; i < len; i++) {
2049                         this.addLayer(layers[i]);
2050                 }
2051         },
2052
2053
2054         // private methods that modify map state
2055
2056         _resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) {
2057
2058                 var zoomChanged = (this._zoom !== zoom);
2059
2060                 if (!afterZoomAnim) {
2061                         this.fire('movestart');
2062
2063                         if (zoomChanged) {
2064                                 this.fire('zoomstart');
2065                         }
2066                 }
2067
2068                 this._zoom = zoom;
2069                 this._initialCenter = center;
2070
2071                 this._initialTopLeftPoint = this._getNewTopLeftPoint(center);
2072
2073                 if (!preserveMapOffset) {
2074                         L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0));
2075                 } else {
2076                         this._initialTopLeftPoint._add(this._getMapPanePos());
2077                 }
2078
2079                 this._tileLayersToLoad = this._tileLayersNum;
2080
2081                 var loading = !this._loaded;
2082                 this._loaded = true;
2083
2084                 if (loading) {
2085                         this.fire('load');
2086                         this.eachLayer(this._layerAdd, this);
2087                 }
2088
2089                 this.fire('viewreset', {hard: !preserveMapOffset});
2090
2091                 this.fire('move');
2092
2093                 if (zoomChanged || afterZoomAnim) {
2094                         this.fire('zoomend');
2095                 }
2096
2097                 this.fire('moveend', {hard: !preserveMapOffset});
2098         },
2099
2100         _rawPanBy: function (offset) {
2101                 L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
2102         },
2103
2104         _getZoomSpan: function () {
2105                 return this.getMaxZoom() - this.getMinZoom();
2106         },
2107
2108         _updateZoomLevels: function () {
2109                 var i,
2110                         minZoom = Infinity,
2111                         maxZoom = -Infinity,
2112                         oldZoomSpan = this._getZoomSpan();
2113
2114                 for (i in this._zoomBoundLayers) {
2115                         var layer = this._zoomBoundLayers[i];
2116                         if (!isNaN(layer.options.minZoom)) {
2117                                 minZoom = Math.min(minZoom, layer.options.minZoom);
2118                         }
2119                         if (!isNaN(layer.options.maxZoom)) {
2120                                 maxZoom = Math.max(maxZoom, layer.options.maxZoom);
2121                         }
2122                 }
2123
2124                 if (i === undefined) { // we have no tilelayers
2125                         this._layersMaxZoom = this._layersMinZoom = undefined;
2126                 } else {
2127                         this._layersMaxZoom = maxZoom;
2128                         this._layersMinZoom = minZoom;
2129                 }
2130
2131                 if (oldZoomSpan !== this._getZoomSpan()) {
2132                         this.fire('zoomlevelschange');
2133                 }
2134         },
2135
2136         _panInsideMaxBounds: function () {
2137                 this.panInsideBounds(this.options.maxBounds);
2138         },
2139
2140         _checkIfLoaded: function () {
2141                 if (!this._loaded) {
2142                         throw new Error('Set map center and zoom first.');
2143                 }
2144         },
2145
2146         // map events
2147
2148         _initEvents: function (onOff) {
2149                 if (!L.DomEvent) { return; }
2150
2151                 onOff = onOff || 'on';
2152
2153                 L.DomEvent[onOff](this._container, 'click', this._onMouseClick, this);
2154
2155                 var events = ['dblclick', 'mousedown', 'mouseup', 'mouseenter',
2156                               'mouseleave', 'mousemove', 'contextmenu'],
2157                     i, len;
2158
2159                 for (i = 0, len = events.length; i < len; i++) {
2160                         L.DomEvent[onOff](this._container, events[i], this._fireMouseEvent, this);
2161                 }
2162
2163                 if (this.options.trackResize) {
2164                         L.DomEvent[onOff](window, 'resize', this._onResize, this);
2165                 }
2166         },
2167
2168         _onResize: function () {
2169                 L.Util.cancelAnimFrame(this._resizeRequest);
2170                 this._resizeRequest = L.Util.requestAnimFrame(
2171                         this.invalidateSize, this, false, this._container);
2172         },
2173
2174         _onMouseClick: function (e) {
2175                 if (!this._loaded || (!e._simulated && this.dragging && this.dragging.moved()) ||
2176                         L.DomEvent._skipped(e)) { return; }
2177
2178                 this.fire('preclick');
2179                 this._fireMouseEvent(e);
2180         },
2181
2182         _fireMouseEvent: function (e) {
2183                 if (!this._loaded || L.DomEvent._skipped(e)) { return; }
2184
2185                 var type = e.type;
2186
2187                 type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type));
2188
2189                 if (!this.hasEventListeners(type)) { return; }
2190
2191                 if (type === 'contextmenu') {
2192                         L.DomEvent.preventDefault(e);
2193                 }
2194
2195                 var containerPoint = this.mouseEventToContainerPoint(e),
2196                     layerPoint = this.containerPointToLayerPoint(containerPoint),
2197                     latlng = this.layerPointToLatLng(layerPoint);
2198
2199                 this.fire(type, {
2200                         latlng: latlng,
2201                         layerPoint: layerPoint,
2202                         containerPoint: containerPoint,
2203                         originalEvent: e
2204                 });
2205         },
2206
2207         _onTileLayerLoad: function () {
2208                 this._tileLayersToLoad--;
2209                 if (this._tileLayersNum && !this._tileLayersToLoad) {
2210                         this.fire('tilelayersload');
2211                 }
2212         },
2213
2214         _clearHandlers: function () {
2215                 for (var i = 0, len = this._handlers.length; i < len; i++) {
2216                         this._handlers[i].disable();
2217                 }
2218         },
2219
2220         whenReady: function (callback, context) {
2221                 if (this._loaded) {
2222                         callback.call(context || this, this);
2223                 } else {
2224                         this.on('load', callback, context);
2225                 }
2226                 return this;
2227         },
2228
2229         _layerAdd: function (layer) {
2230                 layer.onAdd(this);
2231                 this.fire('layeradd', {layer: layer});
2232         },
2233
2234
2235         // private methods for getting map state
2236
2237         _getMapPanePos: function () {
2238                 return L.DomUtil.getPosition(this._mapPane);
2239         },
2240
2241         _moved: function () {
2242                 var pos = this._getMapPanePos();
2243                 return pos && !pos.equals([0, 0]);
2244         },
2245
2246         _getTopLeftPoint: function () {
2247                 return this.getPixelOrigin().subtract(this._getMapPanePos());
2248         },
2249
2250         _getNewTopLeftPoint: function (center, zoom) {
2251                 var viewHalf = this.getSize()._divideBy(2);
2252                 // TODO round on display, not calculation to increase precision?
2253                 return this.project(center, zoom)._subtract(viewHalf)._round();
2254         },
2255
2256         _latLngToNewLayerPoint: function (latlng, newZoom, newCenter) {
2257                 var topLeft = this._getNewTopLeftPoint(newCenter, newZoom).add(this._getMapPanePos());
2258                 return this.project(latlng, newZoom)._subtract(topLeft);
2259         },
2260
2261         // layer point of the current center
2262         _getCenterLayerPoint: function () {
2263                 return this.containerPointToLayerPoint(this.getSize()._divideBy(2));
2264         },
2265
2266         // offset of the specified place to the current center in pixels
2267         _getCenterOffset: function (latlng) {
2268                 return this.latLngToLayerPoint(latlng).subtract(this._getCenterLayerPoint());
2269         },
2270
2271         _limitZoom: function (zoom) {
2272                 var min = this.getMinZoom(),
2273                     max = this.getMaxZoom();
2274
2275                 return Math.max(min, Math.min(max, zoom));
2276         }
2277 });
2278
2279 L.map = function (id, options) {
2280         return new L.Map(id, options);
2281 };
2282
2283
2284 /*
2285  * Mercator projection that takes into account that the Earth is not a perfect sphere.
2286  * Less popular than spherical mercator; used by projections like EPSG:3395.
2287  */
2288
2289 L.Projection.Mercator = {
2290         MAX_LATITUDE: 85.0840591556,
2291
2292         R_MINOR: 6356752.314245179,
2293         R_MAJOR: 6378137,
2294
2295         project: function (latlng) { // (LatLng) -> Point
2296                 var d = L.LatLng.DEG_TO_RAD,
2297                     max = this.MAX_LATITUDE,
2298                     lat = Math.max(Math.min(max, latlng.lat), -max),
2299                     r = this.R_MAJOR,
2300                     r2 = this.R_MINOR,
2301                     x = latlng.lng * d * r,
2302                     y = lat * d,
2303                     tmp = r2 / r,
2304                     eccent = Math.sqrt(1.0 - tmp * tmp),
2305                     con = eccent * Math.sin(y);
2306
2307                 con = Math.pow((1 - con) / (1 + con), eccent * 0.5);
2308
2309                 var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con;
2310                 y = -r * Math.log(ts);
2311
2312                 return new L.Point(x, y);
2313         },
2314
2315         unproject: function (point) { // (Point, Boolean) -> LatLng
2316                 var d = L.LatLng.RAD_TO_DEG,
2317                     r = this.R_MAJOR,
2318                     r2 = this.R_MINOR,
2319                     lng = point.x * d / r,
2320                     tmp = r2 / r,
2321                     eccent = Math.sqrt(1 - (tmp * tmp)),
2322                     ts = Math.exp(- point.y / r),
2323                     phi = (Math.PI / 2) - 2 * Math.atan(ts),
2324                     numIter = 15,
2325                     tol = 1e-7,
2326                     i = numIter,
2327                     dphi = 0.1,
2328                     con;
2329
2330                 while ((Math.abs(dphi) > tol) && (--i > 0)) {
2331                         con = eccent * Math.sin(phi);
2332                         dphi = (Math.PI / 2) - 2 * Math.atan(ts *
2333                                     Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi;
2334                         phi += dphi;
2335                 }
2336
2337                 return new L.LatLng(phi * d, lng);
2338         }
2339 };
2340
2341
2342
2343 L.CRS.EPSG3395 = L.extend({}, L.CRS, {
2344         code: 'EPSG:3395',
2345
2346         projection: L.Projection.Mercator,
2347
2348         transformation: (function () {
2349                 var m = L.Projection.Mercator,
2350                     r = m.R_MAJOR,
2351                     r2 = m.R_MINOR;
2352
2353                 return new L.Transformation(0.5 / (Math.PI * r), 0.5, -0.5 / (Math.PI * r2), 0.5);
2354         }())
2355 });
2356
2357
2358 /*
2359  * L.TileLayer is used for standard xyz-numbered tile layers.
2360  */
2361
2362 L.TileLayer = L.Class.extend({
2363         includes: L.Mixin.Events,
2364
2365         options: {
2366                 minZoom: 0,
2367                 maxZoom: 18,
2368                 tileSize: 256,
2369                 subdomains: 'abc',
2370                 errorTileUrl: '',
2371                 attribution: '',
2372                 zoomOffset: 0,
2373                 opacity: 1,
2374                 /* (undefined works too)
2375                 zIndex: null,
2376                 tms: false,
2377                 continuousWorld: false,
2378                 noWrap: false,
2379                 zoomReverse: false,
2380                 detectRetina: false,
2381                 reuseTiles: false,
2382                 bounds: false,
2383                 */
2384                 unloadInvisibleTiles: L.Browser.mobile,
2385                 updateWhenIdle: L.Browser.mobile
2386         },
2387
2388         initialize: function (url, options) {
2389                 options = L.setOptions(this, options);
2390
2391                 // detecting retina displays, adjusting tileSize and zoom levels
2392                 if (options.detectRetina && L.Browser.retina && options.maxZoom > 0) {
2393
2394                         options.tileSize = Math.floor(options.tileSize / 2);
2395                         options.zoomOffset++;
2396
2397                         if (options.minZoom > 0) {
2398                                 options.minZoom--;
2399                         }
2400                         this.options.maxZoom--;
2401                 }
2402
2403                 if (options.bounds) {
2404                         options.bounds = L.latLngBounds(options.bounds);
2405                 }
2406
2407                 this._url = url;
2408
2409                 var subdomains = this.options.subdomains;
2410
2411                 if (typeof subdomains === 'string') {
2412                         this.options.subdomains = subdomains.split('');
2413                 }
2414         },
2415
2416         onAdd: function (map) {
2417                 this._map = map;
2418                 this._animated = map._zoomAnimated;
2419
2420                 // create a container div for tiles
2421                 this._initContainer();
2422
2423                 // create an image to clone for tiles
2424                 this._createTileProto();
2425
2426                 // set up events
2427                 map.on({
2428                         'viewreset': this._reset,
2429                         'moveend': this._update
2430                 }, this);
2431
2432                 if (this._animated) {
2433                         map.on({
2434                                 'zoomanim': this._animateZoom,
2435                                 'zoomend': this._endZoomAnim
2436                         }, this);
2437                 }
2438
2439                 if (!this.options.updateWhenIdle) {
2440                         this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this);
2441                         map.on('move', this._limitedUpdate, this);
2442                 }
2443
2444                 this._reset();
2445                 this._update();
2446         },
2447
2448         addTo: function (map) {
2449                 map.addLayer(this);
2450                 return this;
2451         },
2452
2453         onRemove: function (map) {
2454                 this._container.parentNode.removeChild(this._container);
2455
2456                 map.off({
2457                         'viewreset': this._reset,
2458                         'moveend': this._update
2459                 }, this);
2460
2461                 if (this._animated) {
2462                         map.off({
2463                                 'zoomanim': this._animateZoom,
2464                                 'zoomend': this._endZoomAnim
2465                         }, this);
2466                 }
2467
2468                 if (!this.options.updateWhenIdle) {
2469                         map.off('move', this._limitedUpdate, this);
2470                 }
2471
2472                 this._container = null;
2473                 this._map = null;
2474         },
2475
2476         bringToFront: function () {
2477                 var pane = this._map._panes.tilePane;
2478
2479                 if (this._container) {
2480                         pane.appendChild(this._container);
2481                         this._setAutoZIndex(pane, Math.max);
2482                 }
2483
2484                 return this;
2485         },
2486
2487         bringToBack: function () {
2488                 var pane = this._map._panes.tilePane;
2489
2490                 if (this._container) {
2491                         pane.insertBefore(this._container, pane.firstChild);
2492                         this._setAutoZIndex(pane, Math.min);
2493                 }
2494
2495                 return this;
2496         },
2497
2498         getAttribution: function () {
2499                 return this.options.attribution;
2500         },
2501
2502         getContainer: function () {
2503                 return this._container;
2504         },
2505
2506         setOpacity: function (opacity) {
2507                 this.options.opacity = opacity;
2508
2509                 if (this._map) {
2510                         this._updateOpacity();
2511                 }
2512
2513                 return this;
2514         },
2515
2516         setZIndex: function (zIndex) {
2517                 this.options.zIndex = zIndex;
2518                 this._updateZIndex();
2519
2520                 return this;
2521         },
2522
2523         setUrl: function (url, noRedraw) {
2524                 this._url = url;
2525
2526                 if (!noRedraw) {
2527                         this.redraw();
2528                 }
2529
2530                 return this;
2531         },
2532
2533         redraw: function () {
2534                 if (this._map) {
2535                         this._reset({hard: true});
2536                         this._update();
2537                 }
2538                 return this;
2539         },
2540
2541         _updateZIndex: function () {
2542                 if (this._container && this.options.zIndex !== undefined) {
2543                         this._container.style.zIndex = this.options.zIndex;
2544                 }
2545         },
2546
2547         _setAutoZIndex: function (pane, compare) {
2548
2549                 var layers = pane.children,
2550                     edgeZIndex = -compare(Infinity, -Infinity), // -Infinity for max, Infinity for min
2551                     zIndex, i, len;
2552
2553                 for (i = 0, len = layers.length; i < len; i++) {
2554
2555                         if (layers[i] !== this._container) {
2556                                 zIndex = parseInt(layers[i].style.zIndex, 10);
2557
2558                                 if (!isNaN(zIndex)) {
2559                                         edgeZIndex = compare(edgeZIndex, zIndex);
2560                                 }
2561                         }
2562                 }
2563
2564                 this.options.zIndex = this._container.style.zIndex =
2565                         (isFinite(edgeZIndex) ? edgeZIndex : 0) + compare(1, -1);
2566         },
2567
2568         _updateOpacity: function () {
2569                 var i,
2570                     tiles = this._tiles;
2571
2572                 if (L.Browser.ielt9) {
2573                         for (i in tiles) {
2574                                 L.DomUtil.setOpacity(tiles[i], this.options.opacity);
2575                         }
2576                 } else {
2577                         L.DomUtil.setOpacity(this._container, this.options.opacity);
2578                 }
2579         },
2580
2581         _initContainer: function () {
2582                 var tilePane = this._map._panes.tilePane;
2583
2584                 if (!this._container) {
2585                         this._container = L.DomUtil.create('div', 'leaflet-layer');
2586
2587                         this._updateZIndex();
2588
2589                         if (this._animated) {
2590                                 var className = 'leaflet-tile-container leaflet-zoom-animated';
2591
2592                                 this._bgBuffer = L.DomUtil.create('div', className, this._container);
2593                                 this._tileContainer = L.DomUtil.create('div', className, this._container);
2594
2595                         } else {
2596                                 this._tileContainer = this._container;
2597                         }
2598
2599                         tilePane.appendChild(this._container);
2600
2601                         if (this.options.opacity < 1) {
2602                                 this._updateOpacity();
2603                         }
2604                 }
2605         },
2606
2607         _reset: function (e) {
2608                 for (var key in this._tiles) {
2609                         this.fire('tileunload', {tile: this._tiles[key]});
2610                 }
2611
2612                 this._tiles = {};
2613                 this._tilesToLoad = 0;
2614
2615                 if (this.options.reuseTiles) {
2616                         this._unusedTiles = [];
2617                 }
2618
2619                 this._tileContainer.innerHTML = '';
2620
2621                 if (this._animated && e && e.hard) {
2622                         this._clearBgBuffer();
2623                 }
2624
2625                 this._initContainer();
2626         },
2627
2628         _update: function () {
2629
2630                 if (!this._map) { return; }
2631
2632                 var bounds = this._map.getPixelBounds(),
2633                     zoom = this._map.getZoom(),
2634                     tileSize = this.options.tileSize;
2635
2636                 if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
2637                         return;
2638                 }
2639
2640                 var tileBounds = L.bounds(
2641                         bounds.min.divideBy(tileSize)._floor(),
2642                         bounds.max.divideBy(tileSize)._floor());
2643
2644                 this._addTilesFromCenterOut(tileBounds);
2645
2646                 if (this.options.unloadInvisibleTiles || this.options.reuseTiles) {
2647                         this._removeOtherTiles(tileBounds);
2648                 }
2649         },
2650
2651         _addTilesFromCenterOut: function (bounds) {
2652                 var queue = [],
2653                     center = bounds.getCenter();
2654
2655                 var j, i, point;
2656
2657                 for (j = bounds.min.y; j <= bounds.max.y; j++) {
2658                         for (i = bounds.min.x; i <= bounds.max.x; i++) {
2659                                 point = new L.Point(i, j);
2660
2661                                 if (this._tileShouldBeLoaded(point)) {
2662                                         queue.push(point);
2663                                 }
2664                         }
2665                 }
2666
2667                 var tilesToLoad = queue.length;
2668
2669                 if (tilesToLoad === 0) { return; }
2670
2671                 // load tiles in order of their distance to center
2672                 queue.sort(function (a, b) {
2673                         return a.distanceTo(center) - b.distanceTo(center);
2674                 });
2675
2676                 var fragment = document.createDocumentFragment();
2677
2678                 // if its the first batch of tiles to load
2679                 if (!this._tilesToLoad) {
2680                         this.fire('loading');
2681                 }
2682
2683                 this._tilesToLoad += tilesToLoad;
2684
2685                 for (i = 0; i < tilesToLoad; i++) {
2686                         this._addTile(queue[i], fragment);
2687                 }
2688
2689                 this._tileContainer.appendChild(fragment);
2690         },
2691
2692         _tileShouldBeLoaded: function (tilePoint) {
2693                 if ((tilePoint.x + ':' + tilePoint.y) in this._tiles) {
2694                         return false; // already loaded
2695                 }
2696
2697                 var options = this.options;
2698
2699                 if (!options.continuousWorld) {
2700                         var limit = this._getWrapTileNum();
2701
2702                         // don't load if exceeds world bounds
2703                         if ((options.noWrap && (tilePoint.x < 0 || tilePoint.x >= limit)) ||
2704                                 tilePoint.y < 0 || tilePoint.y >= limit) { return false; }
2705                 }
2706
2707                 if (options.bounds) {
2708                         var tileSize = options.tileSize,
2709                             nwPoint = tilePoint.multiplyBy(tileSize),
2710                             sePoint = nwPoint.add([tileSize, tileSize]),
2711                             nw = this._map.unproject(nwPoint),
2712                             se = this._map.unproject(sePoint);
2713
2714                         // TODO temporary hack, will be removed after refactoring projections
2715                         // https://github.com/Leaflet/Leaflet/issues/1618
2716                         if (!options.continuousWorld && !options.noWrap) {
2717                                 nw = nw.wrap();
2718                                 se = se.wrap();
2719                         }
2720
2721                         if (!options.bounds.intersects([nw, se])) { return false; }
2722                 }
2723
2724                 return true;
2725         },
2726
2727         _removeOtherTiles: function (bounds) {
2728                 var kArr, x, y, key;
2729
2730                 for (key in this._tiles) {
2731                         kArr = key.split(':');
2732                         x = parseInt(kArr[0], 10);
2733                         y = parseInt(kArr[1], 10);
2734
2735                         // remove tile if it's out of bounds
2736                         if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
2737                                 this._removeTile(key);
2738                         }
2739                 }
2740         },
2741
2742         _removeTile: function (key) {
2743                 var tile = this._tiles[key];
2744
2745                 this.fire('tileunload', {tile: tile, url: tile.src});
2746
2747                 if (this.options.reuseTiles) {
2748                         L.DomUtil.removeClass(tile, 'leaflet-tile-loaded');
2749                         this._unusedTiles.push(tile);
2750
2751                 } else if (tile.parentNode === this._tileContainer) {
2752                         this._tileContainer.removeChild(tile);
2753                 }
2754
2755                 // for https://github.com/CloudMade/Leaflet/issues/137
2756                 if (!L.Browser.android) {
2757                         tile.onload = null;
2758                         tile.src = L.Util.emptyImageUrl;
2759                 }
2760
2761                 delete this._tiles[key];
2762         },
2763
2764         _addTile: function (tilePoint, container) {
2765                 var tilePos = this._getTilePos(tilePoint);
2766
2767                 // get unused tile - or create a new tile
2768                 var tile = this._getTile();
2769
2770                 /*
2771                 Chrome 20 layouts much faster with top/left (verify with timeline, frames)
2772                 Android 4 browser has display issues with top/left and requires transform instead
2773                 Android 2 browser requires top/left or tiles disappear on load or first drag
2774                 (reappear after zoom) https://github.com/CloudMade/Leaflet/issues/866
2775                 (other browsers don't currently care) - see debug/hacks/jitter.html for an example
2776                 */
2777                 L.DomUtil.setPosition(tile, tilePos, L.Browser.chrome || L.Browser.android23);
2778
2779                 this._tiles[tilePoint.x + ':' + tilePoint.y] = tile;
2780
2781                 this._loadTile(tile, tilePoint);
2782
2783                 if (tile.parentNode !== this._tileContainer) {
2784                         container.appendChild(tile);
2785                 }
2786         },
2787
2788         _getZoomForUrl: function () {
2789
2790                 var options = this.options,
2791                     zoom = this._map.getZoom();
2792
2793                 if (options.zoomReverse) {
2794                         zoom = options.maxZoom - zoom;
2795                 }
2796
2797                 return zoom + options.zoomOffset;
2798         },
2799
2800         _getTilePos: function (tilePoint) {
2801                 var origin = this._map.getPixelOrigin(),
2802                     tileSize = this.options.tileSize;
2803
2804                 return tilePoint.multiplyBy(tileSize).subtract(origin);
2805         },
2806
2807         // image-specific code (override to implement e.g. Canvas or SVG tile layer)
2808
2809         getTileUrl: function (tilePoint) {
2810                 return L.Util.template(this._url, L.extend({
2811                         s: this._getSubdomain(tilePoint),
2812                         z: tilePoint.z,
2813                         x: tilePoint.x,
2814                         y: tilePoint.y
2815                 }, this.options));
2816         },
2817
2818         _getWrapTileNum: function () {
2819                 // TODO refactor, limit is not valid for non-standard projections
2820                 return Math.pow(2, this._getZoomForUrl());
2821         },
2822
2823         _adjustTilePoint: function (tilePoint) {
2824
2825                 var limit = this._getWrapTileNum();
2826
2827                 // wrap tile coordinates
2828                 if (!this.options.continuousWorld && !this.options.noWrap) {
2829                         tilePoint.x = ((tilePoint.x % limit) + limit) % limit;
2830                 }
2831
2832                 if (this.options.tms) {
2833                         tilePoint.y = limit - tilePoint.y - 1;
2834                 }
2835
2836                 tilePoint.z = this._getZoomForUrl();
2837         },
2838
2839         _getSubdomain: function (tilePoint) {
2840                 var index = Math.abs(tilePoint.x + tilePoint.y) % this.options.subdomains.length;
2841                 return this.options.subdomains[index];
2842         },
2843
2844         _createTileProto: function () {
2845                 var img = this._tileImg = L.DomUtil.create('img', 'leaflet-tile');
2846                 img.style.width = img.style.height = this.options.tileSize + 'px';
2847                 img.galleryimg = 'no';
2848         },
2849
2850         _getTile: function () {
2851                 if (this.options.reuseTiles && this._unusedTiles.length > 0) {
2852                         var tile = this._unusedTiles.pop();
2853                         this._resetTile(tile);
2854                         return tile;
2855                 }
2856                 return this._createTile();
2857         },
2858
2859         // Override if data stored on a tile needs to be cleaned up before reuse
2860         _resetTile: function (/*tile*/) {},
2861
2862         _createTile: function () {
2863                 var tile = this._tileImg.cloneNode(false);
2864                 tile.onselectstart = tile.onmousemove = L.Util.falseFn;
2865
2866                 if (L.Browser.ielt9 && this.options.opacity !== undefined) {
2867                         L.DomUtil.setOpacity(tile, this.options.opacity);
2868                 }
2869                 return tile;
2870         },
2871
2872         _loadTile: function (tile, tilePoint) {
2873                 tile._layer  = this;
2874                 tile.onload  = this._tileOnLoad;
2875                 tile.onerror = this._tileOnError;
2876
2877                 this._adjustTilePoint(tilePoint);
2878                 tile.src     = this.getTileUrl(tilePoint);
2879         },
2880
2881         _tileLoaded: function () {
2882                 this._tilesToLoad--;
2883                 if (!this._tilesToLoad) {
2884                         this.fire('load');
2885
2886                         if (this._animated) {
2887                                 // clear scaled tiles after all new tiles are loaded (for performance)
2888                                 clearTimeout(this._clearBgBufferTimer);
2889                                 this._clearBgBufferTimer = setTimeout(L.bind(this._clearBgBuffer, this), 500);
2890                         }
2891                 }
2892         },
2893
2894         _tileOnLoad: function () {
2895                 var layer = this._layer;
2896
2897                 //Only if we are loading an actual image
2898                 if (this.src !== L.Util.emptyImageUrl) {
2899                         L.DomUtil.addClass(this, 'leaflet-tile-loaded');
2900
2901                         layer.fire('tileload', {
2902                                 tile: this,
2903                                 url: this.src
2904                         });
2905                 }
2906
2907                 layer._tileLoaded();
2908         },
2909
2910         _tileOnError: function () {
2911                 var layer = this._layer;
2912
2913                 layer.fire('tileerror', {
2914                         tile: this,
2915                         url: this.src
2916                 });
2917
2918                 var newUrl = layer.options.errorTileUrl;
2919                 if (newUrl) {
2920                         this.src = newUrl;
2921                 }
2922
2923                 layer._tileLoaded();
2924         }
2925 });
2926
2927 L.tileLayer = function (url, options) {
2928         return new L.TileLayer(url, options);
2929 };
2930
2931
2932 /*
2933  * L.TileLayer.WMS is used for putting WMS tile layers on the map.
2934  */
2935
2936 L.TileLayer.WMS = L.TileLayer.extend({
2937
2938         defaultWmsParams: {
2939                 service: 'WMS',
2940                 request: 'GetMap',
2941                 version: '1.1.1',
2942                 layers: '',
2943                 styles: '',
2944                 format: 'image/jpeg',
2945                 transparent: false
2946         },
2947
2948         initialize: function (url, options) { // (String, Object)
2949
2950                 this._url = url;
2951
2952                 var wmsParams = L.extend({}, this.defaultWmsParams),
2953                     tileSize = options.tileSize || this.options.tileSize;
2954
2955                 if (options.detectRetina && L.Browser.retina) {
2956                         wmsParams.width = wmsParams.height = tileSize * 2;
2957                 } else {
2958                         wmsParams.width = wmsParams.height = tileSize;
2959                 }
2960
2961                 for (var i in options) {
2962                         // all keys that are not TileLayer options go to WMS params
2963                         if (!this.options.hasOwnProperty(i) && i !== 'crs') {
2964                                 wmsParams[i] = options[i];
2965                         }
2966                 }
2967
2968                 this.wmsParams = wmsParams;
2969
2970                 L.setOptions(this, options);
2971         },
2972
2973         onAdd: function (map) {
2974
2975                 this._crs = this.options.crs || map.options.crs;
2976
2977                 var projectionKey = parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs';
2978                 this.wmsParams[projectionKey] = this._crs.code;
2979
2980                 L.TileLayer.prototype.onAdd.call(this, map);
2981         },
2982
2983         getTileUrl: function (tilePoint, zoom) { // (Point, Number) -> String
2984
2985                 var map = this._map,
2986                     tileSize = this.options.tileSize,
2987
2988                     nwPoint = tilePoint.multiplyBy(tileSize),
2989                     sePoint = nwPoint.add([tileSize, tileSize]),
2990
2991                     nw = this._crs.project(map.unproject(nwPoint, zoom)),
2992                     se = this._crs.project(map.unproject(sePoint, zoom)),
2993
2994                     bbox = [nw.x, se.y, se.x, nw.y].join(','),
2995
2996                     url = L.Util.template(this._url, {s: this._getSubdomain(tilePoint)});
2997
2998                 return url + L.Util.getParamString(this.wmsParams, url, true) + '&BBOX=' + bbox;
2999         },
3000
3001         setParams: function (params, noRedraw) {
3002
3003                 L.extend(this.wmsParams, params);
3004
3005                 if (!noRedraw) {
3006                         this.redraw();
3007                 }
3008
3009                 return this;
3010         }
3011 });
3012
3013 L.tileLayer.wms = function (url, options) {
3014         return new L.TileLayer.WMS(url, options);
3015 };
3016
3017
3018 /*
3019  * L.TileLayer.Canvas is a class that you can use as a base for creating
3020  * dynamically drawn Canvas-based tile layers.
3021  */
3022
3023 L.TileLayer.Canvas = L.TileLayer.extend({
3024         options: {
3025                 async: false
3026         },
3027
3028         initialize: function (options) {
3029                 L.setOptions(this, options);
3030         },
3031
3032         redraw: function () {
3033                 if (this._map) {
3034                         this._reset({hard: true});
3035                         this._update();
3036                 }
3037
3038                 for (var i in this._tiles) {
3039                         this._redrawTile(this._tiles[i]);
3040                 }
3041                 return this;
3042         },
3043
3044         _redrawTile: function (tile) {
3045                 this.drawTile(tile, tile._tilePoint, this._map._zoom);
3046         },
3047
3048         _createTileProto: function () {
3049                 var proto = this._canvasProto = L.DomUtil.create('canvas', 'leaflet-tile');
3050                 proto.width = proto.height = this.options.tileSize;
3051         },
3052
3053         _createTile: function () {
3054                 var tile = this._canvasProto.cloneNode(false);
3055                 tile.onselectstart = tile.onmousemove = L.Util.falseFn;
3056                 return tile;
3057         },
3058
3059         _loadTile: function (tile, tilePoint) {
3060                 tile._layer = this;
3061                 tile._tilePoint = tilePoint;
3062
3063                 this._redrawTile(tile);
3064
3065                 if (!this.options.async) {
3066                         this.tileDrawn(tile);
3067                 }
3068         },
3069
3070         drawTile: function (/*tile, tilePoint*/) {
3071                 // override with rendering code
3072         },
3073
3074         tileDrawn: function (tile) {
3075                 this._tileOnLoad.call(tile);
3076         }
3077 });
3078
3079
3080 L.tileLayer.canvas = function (options) {
3081         return new L.TileLayer.Canvas(options);
3082 };
3083
3084
3085 /*
3086  * L.ImageOverlay is used to overlay images over the map (to specific geographical bounds).
3087  */
3088
3089 L.ImageOverlay = L.Class.extend({
3090         includes: L.Mixin.Events,
3091
3092         options: {
3093                 opacity: 1
3094         },
3095
3096         initialize: function (url, bounds, options) { // (String, LatLngBounds, Object)
3097                 this._url = url;
3098                 this._bounds = L.latLngBounds(bounds);
3099
3100                 L.setOptions(this, options);
3101         },
3102
3103         onAdd: function (map) {
3104                 this._map = map;
3105
3106                 if (!this._image) {
3107                         this._initImage();
3108                 }
3109
3110                 map._panes.overlayPane.appendChild(this._image);
3111
3112                 map.on('viewreset', this._reset, this);
3113
3114                 if (map.options.zoomAnimation && L.Browser.any3d) {
3115                         map.on('zoomanim', this._animateZoom, this);
3116                 }
3117
3118                 this._reset();
3119         },
3120
3121         onRemove: function (map) {
3122                 map.getPanes().overlayPane.removeChild(this._image);
3123
3124                 map.off('viewreset', this._reset, this);
3125
3126                 if (map.options.zoomAnimation) {
3127                         map.off('zoomanim', this._animateZoom, this);
3128                 }
3129         },
3130
3131         addTo: function (map) {
3132                 map.addLayer(this);
3133                 return this;
3134         },
3135
3136         setOpacity: function (opacity) {
3137                 this.options.opacity = opacity;
3138                 this._updateOpacity();
3139                 return this;
3140         },
3141
3142         // TODO remove bringToFront/bringToBack duplication from TileLayer/Path
3143         bringToFront: function () {
3144                 if (this._image) {
3145                         this._map._panes.overlayPane.appendChild(this._image);
3146                 }
3147                 return this;
3148         },
3149
3150         bringToBack: function () {
3151                 var pane = this._map._panes.overlayPane;
3152                 if (this._image) {
3153                         pane.insertBefore(this._image, pane.firstChild);
3154                 }
3155                 return this;
3156         },
3157
3158         _initImage: function () {
3159                 this._image = L.DomUtil.create('img', 'leaflet-image-layer');
3160
3161                 if (this._map.options.zoomAnimation && L.Browser.any3d) {
3162                         L.DomUtil.addClass(this._image, 'leaflet-zoom-animated');
3163                 } else {
3164                         L.DomUtil.addClass(this._image, 'leaflet-zoom-hide');
3165                 }
3166
3167                 this._updateOpacity();
3168
3169                 //TODO createImage util method to remove duplication
3170                 L.extend(this._image, {
3171                         galleryimg: 'no',
3172                         onselectstart: L.Util.falseFn,
3173                         onmousemove: L.Util.falseFn,
3174                         onload: L.bind(this._onImageLoad, this),
3175                         src: this._url
3176                 });
3177         },
3178
3179         _animateZoom: function (e) {
3180                 var map = this._map,
3181                     image = this._image,
3182                     scale = map.getZoomScale(e.zoom),
3183                     nw = this._bounds.getNorthWest(),
3184                     se = this._bounds.getSouthEast(),
3185
3186                     topLeft = map._latLngToNewLayerPoint(nw, e.zoom, e.center),
3187                     size = map._latLngToNewLayerPoint(se, e.zoom, e.center)._subtract(topLeft),
3188                     origin = topLeft._add(size._multiplyBy((1 / 2) * (1 - 1 / scale)));
3189
3190                 image.style[L.DomUtil.TRANSFORM] =
3191                         L.DomUtil.getTranslateString(origin) + ' scale(' + scale + ') ';
3192         },
3193
3194         _reset: function () {
3195                 var image   = this._image,
3196                     topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()),
3197                     size = this._map.latLngToLayerPoint(this._bounds.getSouthEast())._subtract(topLeft);
3198
3199                 L.DomUtil.setPosition(image, topLeft);
3200
3201                 image.style.width  = size.x + 'px';
3202                 image.style.height = size.y + 'px';
3203         },
3204
3205         _onImageLoad: function () {
3206                 this.fire('load');
3207         },
3208
3209         _updateOpacity: function () {
3210                 L.DomUtil.setOpacity(this._image, this.options.opacity);
3211         }
3212 });
3213
3214 L.imageOverlay = function (url, bounds, options) {
3215         return new L.ImageOverlay(url, bounds, options);
3216 };
3217
3218
3219 /*
3220  * L.Icon is an image-based icon class that you can use with L.Marker for custom markers.
3221  */
3222
3223 L.Icon = L.Class.extend({
3224         options: {
3225                 /*
3226                 iconUrl: (String) (required)
3227                 iconRetinaUrl: (String) (optional, used for retina devices if detected)
3228                 iconSize: (Point) (can be set through CSS)
3229                 iconAnchor: (Point) (centered by default, can be set in CSS with negative margins)
3230                 popupAnchor: (Point) (if not specified, popup opens in the anchor point)
3231                 shadowUrl: (String) (no shadow by default)
3232                 shadowRetinaUrl: (String) (optional, used for retina devices if detected)
3233                 shadowSize: (Point)
3234                 shadowAnchor: (Point)
3235                 */
3236                 className: ''
3237         },
3238
3239         initialize: function (options) {
3240                 L.setOptions(this, options);
3241         },
3242
3243         createIcon: function (oldIcon) {
3244                 return this._createIcon('icon', oldIcon);
3245         },
3246
3247         createShadow: function (oldIcon) {
3248                 return this._createIcon('shadow', oldIcon);
3249         },
3250
3251         _createIcon: function (name, oldIcon) {
3252                 var src = this._getIconUrl(name);
3253
3254                 if (!src) {
3255                         if (name === 'icon') {
3256                                 throw new Error('iconUrl not set in Icon options (see the docs).');
3257                         }
3258                         return null;
3259                 }
3260
3261                 var img;
3262                 if (!oldIcon || oldIcon.tagName !== 'IMG') {
3263                         img = this._createImg(src);
3264                 } else {
3265                         img = this._createImg(src, oldIcon);
3266                 }
3267                 this._setIconStyles(img, name);
3268
3269                 return img;
3270         },
3271
3272         _setIconStyles: function (img, name) {
3273                 var options = this.options,
3274                     size = L.point(options[name + 'Size']),
3275                     anchor;
3276
3277                 if (name === 'shadow') {
3278                         anchor = L.point(options.shadowAnchor || options.iconAnchor);
3279                 } else {
3280                         anchor = L.point(options.iconAnchor);
3281                 }
3282
3283                 if (!anchor && size) {
3284                         anchor = size.divideBy(2, true);
3285                 }
3286
3287                 img.className = 'leaflet-marker-' + name + ' ' + options.className;
3288
3289                 if (anchor) {
3290                         img.style.marginLeft = (-anchor.x) + 'px';
3291                         img.style.marginTop  = (-anchor.y) + 'px';
3292                 }
3293
3294                 if (size) {
3295                         img.style.width  = size.x + 'px';
3296                         img.style.height = size.y + 'px';
3297                 }
3298         },
3299
3300         _createImg: function (src, el) {
3301
3302                 if (!L.Browser.ie6) {
3303                         if (!el) {
3304                                 el = document.createElement('img');
3305                         }
3306                         el.src = src;
3307                 } else {
3308                         if (!el) {
3309                                 el = document.createElement('div');
3310                         }
3311                         el.style.filter =
3312                                 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + src + '")';
3313                 }
3314                 return el;
3315         },
3316
3317         _getIconUrl: function (name) {
3318                 if (L.Browser.retina && this.options[name + 'RetinaUrl']) {
3319                         return this.options[name + 'RetinaUrl'];
3320                 }
3321                 return this.options[name + 'Url'];
3322         }
3323 });
3324
3325 L.icon = function (options) {
3326         return new L.Icon(options);
3327 };
3328
3329
3330 /*
3331  * L.Icon.Default is the blue marker icon used by default in Leaflet.
3332  */
3333
3334 L.Icon.Default = L.Icon.extend({
3335
3336         options: {
3337                 iconSize: [25, 41],
3338                 iconAnchor: [12, 41],
3339                 popupAnchor: [1, -34],
3340
3341                 shadowSize: [41, 41]
3342         },
3343
3344         _getIconUrl: function (name) {
3345                 var key = name + 'Url';
3346
3347                 if (this.options[key]) {
3348                         return this.options[key];
3349                 }
3350
3351                 if (L.Browser.retina && name === 'icon') {
3352                         name += '-2x';
3353                 }
3354
3355                 var path = L.Icon.Default.imagePath;
3356
3357                 if (!path) {
3358                         throw new Error('Couldn\'t autodetect L.Icon.Default.imagePath, set it manually.');
3359                 }
3360
3361                 return path + '/marker-' + name + '.png';
3362         }
3363 });
3364
3365 L.Icon.Default.imagePath = (function () {
3366         var scripts = document.getElementsByTagName('script'),
3367             leafletRe = /[\/^]leaflet[\-\._]?([\w\-\._]*)\.js\??/;
3368
3369         var i, len, src, matches, path;
3370
3371         for (i = 0, len = scripts.length; i < len; i++) {
3372                 src = scripts[i].src;
3373                 matches = src.match(leafletRe);
3374
3375                 if (matches) {
3376                         path = src.split(leafletRe)[0];
3377                         return (path ? path + '/' : '') + 'images';
3378                 }
3379         }
3380 }());
3381
3382
3383 /*
3384  * L.Marker is used to display clickable/draggable icons on the map.
3385  */
3386
3387 L.Marker = L.Class.extend({
3388
3389         includes: L.Mixin.Events,
3390
3391         options: {
3392                 icon: new L.Icon.Default(),
3393                 title: '',
3394                 clickable: true,
3395                 draggable: false,
3396                 keyboard: true,
3397                 zIndexOffset: 0,
3398                 opacity: 1,
3399                 riseOnHover: false,
3400                 riseOffset: 250
3401         },
3402
3403         initialize: function (latlng, options) {
3404                 L.setOptions(this, options);
3405                 this._latlng = L.latLng(latlng);
3406         },
3407
3408         onAdd: function (map) {
3409                 this._map = map;
3410
3411                 map.on('viewreset', this.update, this);
3412
3413                 this._initIcon();
3414                 this.update();
3415
3416                 if (map.options.zoomAnimation && map.options.markerZoomAnimation) {
3417                         map.on('zoomanim', this._animateZoom, this);
3418                 }
3419         },
3420
3421         addTo: function (map) {
3422                 map.addLayer(this);
3423                 return this;
3424         },
3425
3426         onRemove: function (map) {
3427                 if (this.dragging) {
3428                         this.dragging.disable();
3429                 }
3430
3431                 this._removeIcon();
3432                 this._removeShadow();
3433
3434                 this.fire('remove');
3435
3436                 map.off({
3437                         'viewreset': this.update,
3438                         'zoomanim': this._animateZoom
3439                 }, this);
3440
3441                 this._map = null;
3442         },
3443
3444         getLatLng: function () {
3445                 return this._latlng;
3446         },
3447
3448         setLatLng: function (latlng) {
3449                 this._latlng = L.latLng(latlng);
3450
3451                 this.update();
3452
3453                 return this.fire('move', { latlng: this._latlng });
3454         },
3455
3456         setZIndexOffset: function (offset) {
3457                 this.options.zIndexOffset = offset;
3458                 this.update();
3459
3460                 return this;
3461         },
3462
3463         setIcon: function (icon) {
3464
3465                 this.options.icon = icon;
3466
3467                 if (this._map) {
3468                         this._initIcon();
3469                         this.update();
3470                 }
3471
3472                 return this;
3473         },
3474
3475         update: function () {
3476                 if (this._icon) {
3477                         var pos = this._map.latLngToLayerPoint(this._latlng).round();
3478                         this._setPos(pos);
3479                 }
3480
3481                 return this;
3482         },
3483
3484         _initIcon: function () {
3485                 var options = this.options,
3486                     map = this._map,
3487                     animation = (map.options.zoomAnimation && map.options.markerZoomAnimation),
3488                     classToAdd = animation ? 'leaflet-zoom-animated' : 'leaflet-zoom-hide';
3489
3490                 var icon = options.icon.createIcon(this._icon),
3491                         addIcon = false;
3492
3493                 // if we're not reusing the icon, remove the old one and init new one
3494                 if (icon !== this._icon) {
3495                         if (this._icon) {
3496                                 this._removeIcon();
3497                         }
3498                         addIcon = true;
3499
3500                         if (options.title) {
3501                                 icon.title = options.title;
3502                         }
3503                 }
3504
3505                 L.DomUtil.addClass(icon, classToAdd);
3506
3507                 if (options.keyboard) {
3508                         icon.tabIndex = '0';
3509                 }
3510
3511                 this._icon = icon;
3512
3513                 this._initInteraction();
3514
3515                 if (options.riseOnHover) {
3516                         L.DomEvent
3517                                 .on(icon, 'mouseover', this._bringToFront, this)
3518                                 .on(icon, 'mouseout', this._resetZIndex, this);
3519                 }
3520
3521                 var newShadow = options.icon.createShadow(this._shadow),
3522                         addShadow = false;
3523
3524                 if (newShadow !== this._shadow) {
3525                         this._removeShadow();
3526                         addShadow = true;
3527                 }
3528
3529                 if (newShadow) {
3530                         L.DomUtil.addClass(newShadow, classToAdd);
3531                 }
3532                 this._shadow = newShadow;
3533
3534
3535                 if (options.opacity < 1) {
3536                         this._updateOpacity();
3537                 }
3538
3539
3540                 var panes = this._map._panes;
3541
3542                 if (addIcon) {
3543                         panes.markerPane.appendChild(this._icon);
3544                 }
3545
3546                 if (newShadow && addShadow) {
3547                         panes.shadowPane.appendChild(this._shadow);
3548                 }
3549         },
3550
3551         _removeIcon: function () {
3552                 if (this.options.riseOnHover) {
3553                         L.DomEvent
3554                             .off(this._icon, 'mouseover', this._bringToFront)
3555                             .off(this._icon, 'mouseout', this._resetZIndex);
3556                 }
3557
3558                 this._map._panes.markerPane.removeChild(this._icon);
3559
3560                 this._icon = null;
3561         },
3562
3563         _removeShadow: function () {
3564                 if (this._shadow) {
3565                         this._map._panes.shadowPane.removeChild(this._shadow);
3566                 }
3567                 this._shadow = null;
3568         },
3569
3570         _setPos: function (pos) {
3571                 L.DomUtil.setPosition(this._icon, pos);
3572
3573                 if (this._shadow) {
3574                         L.DomUtil.setPosition(this._shadow, pos);
3575                 }
3576
3577                 this._zIndex = pos.y + this.options.zIndexOffset;
3578
3579                 this._resetZIndex();
3580         },
3581
3582         _updateZIndex: function (offset) {
3583                 this._icon.style.zIndex = this._zIndex + offset;
3584         },
3585
3586         _animateZoom: function (opt) {
3587                 var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
3588
3589                 this._setPos(pos);
3590         },
3591
3592         _initInteraction: function () {
3593
3594                 if (!this.options.clickable) { return; }
3595
3596                 // TODO refactor into something shared with Map/Path/etc. to DRY it up
3597
3598                 var icon = this._icon,
3599                     events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'contextmenu'];
3600
3601                 L.DomUtil.addClass(icon, 'leaflet-clickable');
3602                 L.DomEvent.on(icon, 'click', this._onMouseClick, this);
3603                 L.DomEvent.on(icon, 'keypress', this._onKeyPress, this);
3604
3605                 for (var i = 0; i < events.length; i++) {
3606                         L.DomEvent.on(icon, events[i], this._fireMouseEvent, this);
3607                 }
3608
3609                 if (L.Handler.MarkerDrag) {
3610                         this.dragging = new L.Handler.MarkerDrag(this);
3611
3612                         if (this.options.draggable) {
3613                                 this.dragging.enable();
3614                         }
3615                 }
3616         },
3617
3618         _onMouseClick: function (e) {
3619                 var wasDragged = this.dragging && this.dragging.moved();
3620
3621                 if (this.hasEventListeners(e.type) || wasDragged) {
3622                         L.DomEvent.stopPropagation(e);
3623                 }
3624
3625                 if (wasDragged) { return; }
3626
3627                 if ((!this.dragging || !this.dragging._enabled) && this._map.dragging && this._map.dragging.moved()) { return; }
3628
3629                 this.fire(e.type, {
3630                         originalEvent: e,
3631                         latlng: this._latlng
3632                 });
3633         },
3634
3635         _onKeyPress: function (e) {
3636                 if (e.keyCode === 13) {
3637                         this.fire('click', {
3638                                 originalEvent: e,
3639                                 latlng: this._latlng
3640                         });
3641                 }
3642         },
3643
3644         _fireMouseEvent: function (e) {
3645
3646                 this.fire(e.type, {
3647                         originalEvent: e,
3648                         latlng: this._latlng
3649                 });
3650
3651                 // TODO proper custom event propagation
3652                 // this line will always be called if marker is in a FeatureGroup
3653                 if (e.type === 'contextmenu' && this.hasEventListeners(e.type)) {
3654                         L.DomEvent.preventDefault(e);
3655                 }
3656                 if (e.type !== 'mousedown') {
3657                         L.DomEvent.stopPropagation(e);
3658                 } else {
3659                         L.DomEvent.preventDefault(e);
3660                 }
3661         },
3662
3663         setOpacity: function (opacity) {
3664                 this.options.opacity = opacity;
3665                 if (this._map) {
3666                         this._updateOpacity();
3667                 }
3668
3669                 return this;
3670         },
3671
3672         _updateOpacity: function () {
3673                 L.DomUtil.setOpacity(this._icon, this.options.opacity);
3674                 if (this._shadow) {
3675                         L.DomUtil.setOpacity(this._shadow, this.options.opacity);
3676                 }
3677         },
3678
3679         _bringToFront: function () {
3680                 this._updateZIndex(this.options.riseOffset);
3681         },
3682
3683         _resetZIndex: function () {
3684                 this._updateZIndex(0);
3685         }
3686 });
3687
3688 L.marker = function (latlng, options) {
3689         return new L.Marker(latlng, options);
3690 };
3691
3692
3693 /*
3694  * L.DivIcon is a lightweight HTML-based icon class (as opposed to the image-based L.Icon)
3695  * to use with L.Marker.
3696  */
3697
3698 L.DivIcon = L.Icon.extend({
3699         options: {
3700                 iconSize: [12, 12], // also can be set through CSS
3701                 /*
3702                 iconAnchor: (Point)
3703                 popupAnchor: (Point)
3704                 html: (String)
3705                 bgPos: (Point)
3706                 */
3707                 className: 'leaflet-div-icon',
3708                 html: false
3709         },
3710
3711         createIcon: function (oldIcon) {
3712                 var div = (oldIcon && oldIcon.tagName === 'DIV') ? oldIcon : document.createElement('div'),
3713                     options = this.options;
3714
3715                 if (options.html !== false) {
3716                         div.innerHTML = options.html;
3717                 } else {
3718                         div.innerHTML = '';
3719                 }
3720
3721                 if (options.bgPos) {
3722                         div.style.backgroundPosition =
3723                                 (-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px';
3724                 }
3725
3726                 this._setIconStyles(div, 'icon');
3727                 return div;
3728         },
3729
3730         createShadow: function () {
3731                 return null;
3732         }
3733 });
3734
3735 L.divIcon = function (options) {
3736         return new L.DivIcon(options);
3737 };
3738
3739
3740 /*
3741  * L.Popup is used for displaying popups on the map.
3742  */
3743
3744 L.Map.mergeOptions({
3745         closePopupOnClick: true
3746 });
3747
3748 L.Popup = L.Class.extend({
3749         includes: L.Mixin.Events,
3750
3751         options: {
3752                 minWidth: 50,
3753                 maxWidth: 300,
3754                 maxHeight: null,
3755                 autoPan: true,
3756                 closeButton: true,
3757                 offset: [0, 7],
3758                 autoPanPadding: [5, 5],
3759                 keepInView: false,
3760                 className: '',
3761                 zoomAnimation: true
3762         },
3763
3764         initialize: function (options, source) {
3765                 L.setOptions(this, options);
3766
3767                 this._source = source;
3768                 this._animated = L.Browser.any3d && this.options.zoomAnimation;
3769                 this._isOpen = false;
3770         },
3771
3772         onAdd: function (map) {
3773                 this._map = map;
3774
3775                 if (!this._container) {
3776                         this._initLayout();
3777                 }
3778                 this._updateContent();
3779
3780                 var animFade = map.options.fadeAnimation;
3781
3782                 if (animFade) {
3783                         L.DomUtil.setOpacity(this._container, 0);
3784                 }
3785                 map._panes.popupPane.appendChild(this._container);
3786
3787                 map.on(this._getEvents(), this);
3788
3789                 this._update();
3790
3791                 if (animFade) {
3792                         L.DomUtil.setOpacity(this._container, 1);
3793                 }
3794
3795                 this.fire('open');
3796
3797                 map.fire('popupopen', {popup: this});
3798
3799                 if (this._source) {
3800                         this._source.fire('popupopen', {popup: this});
3801                 }
3802         },
3803
3804         addTo: function (map) {
3805                 map.addLayer(this);
3806                 return this;
3807         },
3808
3809         openOn: function (map) {
3810                 map.openPopup(this);
3811                 return this;
3812         },
3813
3814         onRemove: function (map) {
3815                 map._panes.popupPane.removeChild(this._container);
3816
3817                 L.Util.falseFn(this._container.offsetWidth); // force reflow
3818
3819                 map.off(this._getEvents(), this);
3820
3821                 if (map.options.fadeAnimation) {
3822                         L.DomUtil.setOpacity(this._container, 0);
3823                 }
3824
3825                 this._map = null;
3826
3827                 this.fire('close');
3828
3829                 map.fire('popupclose', {popup: this});
3830
3831                 if (this._source) {
3832                         this._source.fire('popupclose', {popup: this});
3833                 }
3834         },
3835
3836         setLatLng: function (latlng) {
3837                 this._latlng = L.latLng(latlng);
3838                 this._update();
3839                 return this;
3840         },
3841
3842         setContent: function (content) {
3843                 this._content = content;
3844                 this._update();
3845                 return this;
3846         },
3847
3848         _getEvents: function () {
3849                 var events = {
3850                         viewreset: this._updatePosition
3851                 };
3852
3853                 if (this._animated) {
3854                         events.zoomanim = this._zoomAnimation;
3855                 }
3856                 if ('closeOnClick' in this.options ? this.options.closeOnClick : this._map.options.closePopupOnClick) {
3857                         events.preclick = this._close;
3858                 }
3859                 if (this.options.keepInView) {
3860                         events.moveend = this._adjustPan;
3861                 }
3862
3863                 return events;
3864         },
3865
3866         _close: function () {
3867                 if (this._map) {
3868                         this._map.closePopup(this);
3869                 }
3870         },
3871
3872         _initLayout: function () {
3873                 var prefix = 'leaflet-popup',
3874                         containerClass = prefix + ' ' + this.options.className + ' leaflet-zoom-' +
3875                                 (this._animated ? 'animated' : 'hide'),
3876                         container = this._container = L.DomUtil.create('div', containerClass),
3877                         closeButton;
3878
3879                 if (this.options.closeButton) {
3880                         closeButton = this._closeButton =
3881                                 L.DomUtil.create('a', prefix + '-close-button', container);
3882                         closeButton.href = '#close';
3883                         closeButton.innerHTML = '&#215;';
3884                         L.DomEvent.disableClickPropagation(closeButton);
3885
3886                         L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
3887                 }
3888
3889                 var wrapper = this._wrapper =
3890                         L.DomUtil.create('div', prefix + '-content-wrapper', container);
3891                 L.DomEvent.disableClickPropagation(wrapper);
3892
3893                 this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
3894                 L.DomEvent.on(this._contentNode, 'mousewheel', L.DomEvent.stopPropagation);
3895                 L.DomEvent.on(this._contentNode, 'MozMousePixelScroll', L.DomEvent.stopPropagation);
3896                 L.DomEvent.on(wrapper, 'contextmenu', L.DomEvent.stopPropagation);
3897                 this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
3898                 this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
3899         },
3900
3901         _update: function () {
3902                 if (!this._map) { return; }
3903
3904                 this._container.style.visibility = 'hidden';
3905
3906                 this._updateContent();
3907                 this._updateLayout();
3908                 this._updatePosition();
3909
3910                 this._container.style.visibility = '';
3911
3912                 this._adjustPan();
3913         },
3914
3915         _updateContent: function () {
3916                 if (!this._content) { return; }
3917
3918                 if (typeof this._content === 'string') {
3919                         this._contentNode.innerHTML = this._content;
3920                 } else {
3921                         while (this._contentNode.hasChildNodes()) {
3922                                 this._contentNode.removeChild(this._contentNode.firstChild);
3923                         }
3924                         this._contentNode.appendChild(this._content);
3925                 }
3926                 this.fire('contentupdate');
3927         },
3928
3929         _updateLayout: function () {
3930                 var container = this._contentNode,
3931                     style = container.style;
3932
3933                 style.width = '';
3934                 style.whiteSpace = 'nowrap';
3935
3936                 var width = container.offsetWidth;
3937                 width = Math.min(width, this.options.maxWidth);
3938                 width = Math.max(width, this.options.minWidth);
3939
3940                 style.width = (width + 1) + 'px';
3941                 style.whiteSpace = '';
3942
3943                 style.height = '';
3944
3945                 var height = container.offsetHeight,
3946                     maxHeight = this.options.maxHeight,
3947                     scrolledClass = 'leaflet-popup-scrolled';
3948
3949                 if (maxHeight && height > maxHeight) {
3950                         style.height = maxHeight + 'px';
3951                         L.DomUtil.addClass(container, scrolledClass);
3952                 } else {
3953                         L.DomUtil.removeClass(container, scrolledClass);
3954                 }
3955
3956                 this._containerWidth = this._container.offsetWidth;
3957         },
3958
3959         _updatePosition: function () {
3960                 if (!this._map) { return; }
3961
3962                 var pos = this._map.latLngToLayerPoint(this._latlng),
3963                     animated = this._animated,
3964                     offset = L.point(this.options.offset);
3965
3966                 if (animated) {
3967                         L.DomUtil.setPosition(this._container, pos);
3968                 }
3969
3970                 this._containerBottom = -offset.y - (animated ? 0 : pos.y);
3971                 this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x + (animated ? 0 : pos.x);
3972
3973                 // bottom position the popup in case the height of the popup changes (images loading etc)
3974                 this._container.style.bottom = this._containerBottom + 'px';
3975                 this._container.style.left = this._containerLeft + 'px';
3976         },
3977
3978         _zoomAnimation: function (opt) {
3979                 var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
3980
3981                 L.DomUtil.setPosition(this._container, pos);
3982         },
3983
3984         _adjustPan: function () {
3985                 if (!this.options.autoPan) { return; }
3986
3987                 var map = this._map,
3988                     containerHeight = this._container.offsetHeight,
3989                     containerWidth = this._containerWidth,
3990
3991                     layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom);
3992
3993                 if (this._animated) {
3994                         layerPos._add(L.DomUtil.getPosition(this._container));
3995                 }
3996
3997                 var containerPos = map.layerPointToContainerPoint(layerPos),
3998                     padding = L.point(this.options.autoPanPadding),
3999                     size = map.getSize(),
4000                     dx = 0,
4001                     dy = 0;
4002
4003                 if (containerPos.x + containerWidth > size.x) { // right
4004                         dx = containerPos.x + containerWidth - size.x + padding.x;
4005                 }
4006                 if (containerPos.x - dx < 0) { // left
4007                         dx = containerPos.x - padding.x;
4008                 }
4009                 if (containerPos.y + containerHeight > size.y) { // bottom
4010                         dy = containerPos.y + containerHeight - size.y + padding.y;
4011                 }
4012                 if (containerPos.y - dy < 0) { // top
4013                         dy = containerPos.y - padding.y;
4014                 }
4015
4016                 if (dx || dy) {
4017                         map
4018                             .fire('autopanstart')
4019                             .panBy([dx, dy]);
4020                 }
4021         },
4022
4023         _onCloseButtonClick: function (e) {
4024                 this._close();
4025                 L.DomEvent.stop(e);
4026         }
4027 });
4028
4029 L.popup = function (options, source) {
4030         return new L.Popup(options, source);
4031 };
4032
4033
4034 L.Map.include({
4035         openPopup: function (popup, latlng, options) { // (Popup) or (String || HTMLElement, LatLng[, Object])
4036                 this.closePopup();
4037
4038                 if (!(popup instanceof L.Popup)) {
4039                         var content = popup;
4040
4041                         popup = new L.Popup(options)
4042                             .setLatLng(latlng)
4043                             .setContent(content);
4044                 }
4045                 popup._isOpen = true;
4046
4047                 this._popup = popup;
4048                 return this.addLayer(popup);
4049         },
4050
4051         closePopup: function (popup) {
4052                 if (!popup || popup === this._popup) {
4053                         popup = this._popup;
4054                         this._popup = null;
4055                 }
4056                 if (popup) {
4057                         this.removeLayer(popup);
4058                         popup._isOpen = false;
4059                 }
4060                 return this;
4061         }
4062 });
4063
4064
4065 /*
4066  * Popup extension to L.Marker, adding popup-related methods.
4067  */
4068
4069 L.Marker.include({
4070         openPopup: function () {
4071                 if (this._popup && this._map && !this._map.hasLayer(this._popup)) {
4072                         this._popup.setLatLng(this._latlng);
4073                         this._map.openPopup(this._popup);
4074                 }
4075
4076                 return this;
4077         },
4078
4079         closePopup: function () {
4080                 if (this._popup) {
4081                         this._popup._close();
4082                 }
4083                 return this;
4084         },
4085
4086         togglePopup: function () {
4087                 if (this._popup) {
4088                         if (this._popup._isOpen) {
4089                                 this.closePopup();
4090                         } else {
4091                                 this.openPopup();
4092                         }
4093                 }
4094                 return this;
4095         },
4096
4097         bindPopup: function (content, options) {
4098                 var anchor = L.point(this.options.icon.options.popupAnchor || [0, 0]);
4099
4100                 anchor = anchor.add(L.Popup.prototype.options.offset);
4101
4102                 if (options && options.offset) {
4103                         anchor = anchor.add(options.offset);
4104                 }
4105
4106                 options = L.extend({offset: anchor}, options);
4107
4108                 if (!this._popup) {
4109                         this
4110                             .on('click', this.togglePopup, this)
4111                             .on('remove', this.closePopup, this)
4112                             .on('move', this._movePopup, this);
4113                 }
4114
4115                 if (content instanceof L.Popup) {
4116                         L.setOptions(content, options);
4117                         this._popup = content;
4118                 } else {
4119                         this._popup = new L.Popup(options, this)
4120                                 .setContent(content);
4121                 }
4122
4123                 return this;
4124         },
4125
4126         setPopupContent: function (content) {
4127                 if (this._popup) {
4128                         this._popup.setContent(content);
4129                 }
4130                 return this;
4131         },
4132
4133         unbindPopup: function () {
4134                 if (this._popup) {
4135                         this._popup = null;
4136                         this
4137                             .off('click', this.togglePopup)
4138                             .off('remove', this.closePopup)
4139                             .off('move', this._movePopup);
4140                 }
4141                 return this;
4142         },
4143
4144         _movePopup: function (e) {
4145                 this._popup.setLatLng(e.latlng);
4146         }
4147 });
4148
4149
4150 /*
4151  * L.LayerGroup is a class to combine several layers into one so that
4152  * you can manipulate the group (e.g. add/remove it) as one layer.
4153  */
4154
4155 L.LayerGroup = L.Class.extend({
4156         initialize: function (layers) {
4157                 this._layers = {};
4158
4159                 var i, len;
4160
4161                 if (layers) {
4162                         for (i = 0, len = layers.length; i < len; i++) {
4163                                 this.addLayer(layers[i]);
4164                         }
4165                 }
4166         },
4167
4168         addLayer: function (layer) {
4169                 var id = this.getLayerId(layer);
4170
4171                 this._layers[id] = layer;
4172
4173                 if (this._map) {
4174                         this._map.addLayer(layer);
4175                 }
4176
4177                 return this;
4178         },
4179
4180         removeLayer: function (layer) {
4181                 var id = layer in this._layers ? layer : this.getLayerId(layer);
4182
4183                 if (this._map && this._layers[id]) {
4184                         this._map.removeLayer(this._layers[id]);
4185                 }
4186
4187                 delete this._layers[id];
4188
4189                 return this;
4190         },
4191
4192         hasLayer: function (layer) {
4193                 if (!layer) { return false; }
4194
4195                 return (layer in this._layers || this.getLayerId(layer) in this._layers);
4196         },
4197
4198         clearLayers: function () {
4199                 this.eachLayer(this.removeLayer, this);
4200                 return this;
4201         },
4202
4203         invoke: function (methodName) {
4204                 var args = Array.prototype.slice.call(arguments, 1),
4205                     i, layer;
4206
4207                 for (i in this._layers) {
4208                         layer = this._layers[i];
4209
4210                         if (layer[methodName]) {
4211                                 layer[methodName].apply(layer, args);
4212                         }
4213                 }
4214
4215                 return this;
4216         },
4217
4218         onAdd: function (map) {
4219                 this._map = map;
4220                 this.eachLayer(map.addLayer, map);
4221         },
4222
4223         onRemove: function (map) {
4224                 this.eachLayer(map.removeLayer, map);
4225                 this._map = null;
4226         },
4227
4228         addTo: function (map) {
4229                 map.addLayer(this);
4230                 return this;
4231         },
4232
4233         eachLayer: function (method, context) {
4234                 for (var i in this._layers) {
4235                         method.call(context, this._layers[i]);
4236                 }
4237                 return this;
4238         },
4239
4240         getLayer: function (id) {
4241                 return this._layers[id];
4242         },
4243
4244         getLayers: function () {
4245                 var layers = [];
4246
4247                 for (var i in this._layers) {
4248                         layers.push(this._layers[i]);
4249                 }
4250                 return layers;
4251         },
4252
4253         setZIndex: function (zIndex) {
4254                 return this.invoke('setZIndex', zIndex);
4255         },
4256
4257         getLayerId: function (layer) {
4258                 return L.stamp(layer);
4259         }
4260 });
4261
4262 L.layerGroup = function (layers) {
4263         return new L.LayerGroup(layers);
4264 };
4265
4266
4267 /*
4268  * L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods
4269  * shared between a group of interactive layers (like vectors or markers).
4270  */
4271
4272 L.FeatureGroup = L.LayerGroup.extend({
4273         includes: L.Mixin.Events,
4274
4275         statics: {
4276                 EVENTS: 'click dblclick mouseover mouseout mousemove contextmenu popupopen popupclose'
4277         },
4278
4279         addLayer: function (layer) {
4280                 if (this.hasLayer(layer)) {
4281                         return this;
4282                 }
4283
4284                 layer.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
4285
4286                 L.LayerGroup.prototype.addLayer.call(this, layer);
4287
4288                 if (this._popupContent && layer.bindPopup) {
4289                         layer.bindPopup(this._popupContent, this._popupOptions);
4290                 }
4291
4292                 return this.fire('layeradd', {layer: layer});
4293         },
4294
4295         removeLayer: function (layer) {
4296                 if (!this.hasLayer(layer)) {
4297                         return this;
4298                 }
4299                 if (layer in this._layers) {
4300                         layer = this._layers[layer];
4301                 }
4302
4303                 layer.off(L.FeatureGroup.EVENTS, this._propagateEvent, this);
4304
4305                 L.LayerGroup.prototype.removeLayer.call(this, layer);
4306
4307                 if (this._popupContent) {
4308                         this.invoke('unbindPopup');
4309                 }
4310
4311                 return this.fire('layerremove', {layer: layer});
4312         },
4313
4314         bindPopup: function (content, options) {
4315                 this._popupContent = content;
4316                 this._popupOptions = options;
4317                 return this.invoke('bindPopup', content, options);
4318         },
4319
4320         setStyle: function (style) {
4321                 return this.invoke('setStyle', style);
4322         },
4323
4324         bringToFront: function () {
4325                 return this.invoke('bringToFront');
4326         },
4327
4328         bringToBack: function () {
4329                 return this.invoke('bringToBack');
4330         },
4331
4332         getBounds: function () {
4333                 var bounds = new L.LatLngBounds();
4334
4335                 this.eachLayer(function (layer) {
4336                         bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds());
4337                 });
4338
4339                 return bounds;
4340         },
4341
4342         _propagateEvent: function (e) {
4343                 if (!e.layer) {
4344                         e.layer = e.target;
4345                 }
4346                 e.target = this;
4347
4348                 this.fire(e.type, e);
4349         }
4350 });
4351
4352 L.featureGroup = function (layers) {
4353         return new L.FeatureGroup(layers);
4354 };
4355
4356
4357 /*
4358  * L.Path is a base class for rendering vector paths on a map. Inherited by Polyline, Circle, etc.
4359  */
4360
4361 L.Path = L.Class.extend({
4362         includes: [L.Mixin.Events],
4363
4364         statics: {
4365                 // how much to extend the clip area around the map view
4366                 // (relative to its size, e.g. 0.5 is half the screen in each direction)
4367                 // set it so that SVG element doesn't exceed 1280px (vectors flicker on dragend if it is)
4368                 CLIP_PADDING: (function () {
4369                         var max = L.Browser.mobile ? 1280 : 2000,
4370                             target = (max / Math.max(window.outerWidth, window.outerHeight) - 1) / 2;
4371                         return Math.max(0, Math.min(0.5, target));
4372                 })()
4373         },
4374
4375         options: {
4376                 stroke: true,
4377                 color: '#0033ff',
4378                 dashArray: null,
4379                 weight: 5,
4380                 opacity: 0.5,
4381
4382                 fill: false,
4383                 fillColor: null, //same as color by default
4384                 fillOpacity: 0.2,
4385
4386                 clickable: true
4387         },
4388
4389         initialize: function (options) {
4390                 L.setOptions(this, options);
4391         },
4392
4393         onAdd: function (map) {
4394                 this._map = map;
4395
4396                 if (!this._container) {
4397                         this._initElements();
4398                         this._initEvents();
4399                 }
4400
4401                 this.projectLatlngs();
4402                 this._updatePath();
4403
4404                 if (this._container) {
4405                         this._map._pathRoot.appendChild(this._container);
4406                 }
4407
4408                 this.fire('add');
4409
4410                 map.on({
4411                         'viewreset': this.projectLatlngs,
4412                         'moveend': this._updatePath
4413                 }, this);
4414         },
4415
4416         addTo: function (map) {
4417                 map.addLayer(this);
4418                 return this;
4419         },
4420
4421         onRemove: function (map) {
4422                 map._pathRoot.removeChild(this._container);
4423
4424                 // Need to fire remove event before we set _map to null as the event hooks might need the object
4425                 this.fire('remove');
4426                 this._map = null;
4427
4428                 if (L.Browser.vml) {
4429                         this._container = null;
4430                         this._stroke = null;
4431                         this._fill = null;
4432                 }
4433
4434                 map.off({
4435                         'viewreset': this.projectLatlngs,
4436                         'moveend': this._updatePath
4437                 }, this);
4438         },
4439
4440         projectLatlngs: function () {
4441                 // do all projection stuff here
4442         },
4443
4444         setStyle: function (style) {
4445                 L.setOptions(this, style);
4446
4447                 if (this._container) {
4448                         this._updateStyle();
4449                 }
4450
4451                 return this;
4452         },
4453
4454         redraw: function () {
4455                 if (this._map) {
4456                         this.projectLatlngs();
4457                         this._updatePath();
4458                 }
4459                 return this;
4460         }
4461 });
4462
4463 L.Map.include({
4464         _updatePathViewport: function () {
4465                 var p = L.Path.CLIP_PADDING,
4466                     size = this.getSize(),
4467                     panePos = L.DomUtil.getPosition(this._mapPane),
4468                     min = panePos.multiplyBy(-1)._subtract(size.multiplyBy(p)._round()),
4469                     max = min.add(size.multiplyBy(1 + p * 2)._round());
4470
4471                 this._pathViewport = new L.Bounds(min, max);
4472         }
4473 });
4474
4475
4476 /*
4477  * Extends L.Path with SVG-specific rendering code.
4478  */
4479
4480 L.Path.SVG_NS = 'http://www.w3.org/2000/svg';
4481
4482 L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect);
4483
4484 L.Path = L.Path.extend({
4485         statics: {
4486                 SVG: L.Browser.svg
4487         },
4488
4489         bringToFront: function () {
4490                 var root = this._map._pathRoot,
4491                     path = this._container;
4492
4493                 if (path && root.lastChild !== path) {
4494                         root.appendChild(path);
4495                 }
4496                 return this;
4497         },
4498
4499         bringToBack: function () {
4500                 var root = this._map._pathRoot,
4501                     path = this._container,
4502                     first = root.firstChild;
4503
4504                 if (path && first !== path) {
4505                         root.insertBefore(path, first);
4506                 }
4507                 return this;
4508         },
4509
4510         getPathString: function () {
4511                 // form path string here
4512         },
4513
4514         _createElement: function (name) {
4515                 return document.createElementNS(L.Path.SVG_NS, name);
4516         },
4517
4518         _initElements: function () {
4519                 this._map._initPathRoot();
4520                 this._initPath();
4521                 this._initStyle();
4522         },
4523
4524         _initPath: function () {
4525                 this._container = this._createElement('g');
4526
4527                 this._path = this._createElement('path');
4528                 this._container.appendChild(this._path);
4529         },
4530
4531         _initStyle: function () {
4532                 if (this.options.stroke) {
4533                         this._path.setAttribute('stroke-linejoin', 'round');
4534                         this._path.setAttribute('stroke-linecap', 'round');
4535                 }
4536                 if (this.options.fill) {
4537                         this._path.setAttribute('fill-rule', 'evenodd');
4538                 }
4539                 if (this.options.pointerEvents) {
4540                         this._path.setAttribute('pointer-events', this.options.pointerEvents);
4541                 }
4542                 if (!this.options.clickable && !this.options.pointerEvents) {
4543                         this._path.setAttribute('pointer-events', 'none');
4544                 }
4545                 this._updateStyle();
4546         },
4547
4548         _updateStyle: function () {
4549                 if (this.options.stroke) {
4550                         this._path.setAttribute('stroke', this.options.color);
4551                         this._path.setAttribute('stroke-opacity', this.options.opacity);
4552                         this._path.setAttribute('stroke-width', this.options.weight);
4553                         if (this.options.dashArray) {
4554                                 this._path.setAttribute('stroke-dasharray', this.options.dashArray);
4555                         } else {
4556                                 this._path.removeAttribute('stroke-dasharray');
4557                         }
4558                 } else {
4559                         this._path.setAttribute('stroke', 'none');
4560                 }
4561                 if (this.options.fill) {
4562                         this._path.setAttribute('fill', this.options.fillColor || this.options.color);
4563                         this._path.setAttribute('fill-opacity', this.options.fillOpacity);
4564                 } else {
4565                         this._path.setAttribute('fill', 'none');
4566                 }
4567         },
4568
4569         _updatePath: function () {
4570                 var str = this.getPathString();
4571                 if (!str) {
4572                         // fix webkit empty string parsing bug
4573                         str = 'M0 0';
4574                 }
4575                 this._path.setAttribute('d', str);
4576         },
4577
4578         // TODO remove duplication with L.Map
4579         _initEvents: function () {
4580                 if (this.options.clickable) {
4581                         if (L.Browser.svg || !L.Browser.vml) {
4582                                 this._path.setAttribute('class', 'leaflet-clickable');
4583                         }
4584
4585                         L.DomEvent.on(this._container, 'click', this._onMouseClick, this);
4586
4587                         var events = ['dblclick', 'mousedown', 'mouseover',
4588                                       'mouseout', 'mousemove', 'contextmenu'];
4589                         for (var i = 0; i < events.length; i++) {
4590                                 L.DomEvent.on(this._container, events[i], this._fireMouseEvent, this);
4591                         }
4592                 }
4593         },
4594
4595         _onMouseClick: function (e) {
4596                 if (this._map.dragging && this._map.dragging.moved()) { return; }
4597
4598                 this._fireMouseEvent(e);
4599         },
4600
4601         _fireMouseEvent: function (e) {
4602                 if (!this.hasEventListeners(e.type)) { return; }
4603
4604                 var map = this._map,
4605                     containerPoint = map.mouseEventToContainerPoint(e),
4606                     layerPoint = map.containerPointToLayerPoint(containerPoint),
4607                     latlng = map.layerPointToLatLng(layerPoint);
4608
4609                 this.fire(e.type, {
4610                         latlng: latlng,
4611                         layerPoint: layerPoint,
4612                         containerPoint: containerPoint,
4613                         originalEvent: e
4614                 });
4615
4616                 if (e.type === 'contextmenu') {
4617                         L.DomEvent.preventDefault(e);
4618                 }
4619                 if (e.type !== 'mousemove') {
4620                         L.DomEvent.stopPropagation(e);
4621                 }
4622         }
4623 });
4624
4625 L.Map.include({
4626         _initPathRoot: function () {
4627                 if (!this._pathRoot) {
4628                         this._pathRoot = L.Path.prototype._createElement('svg');
4629                         this._panes.overlayPane.appendChild(this._pathRoot);
4630
4631                         if (this.options.zoomAnimation && L.Browser.any3d) {
4632                                 this._pathRoot.setAttribute('class', ' leaflet-zoom-animated');
4633
4634                                 this.on({
4635                                         'zoomanim': this._animatePathZoom,
4636                                         'zoomend': this._endPathZoom
4637                                 });
4638                         } else {
4639                                 this._pathRoot.setAttribute('class', ' leaflet-zoom-hide');
4640                         }
4641
4642                         this.on('moveend', this._updateSvgViewport);
4643                         this._updateSvgViewport();
4644                 }
4645         },
4646
4647         _animatePathZoom: function (e) {
4648                 var scale = this.getZoomScale(e.zoom),
4649                     offset = this._getCenterOffset(e.center)._multiplyBy(-scale)._add(this._pathViewport.min);
4650
4651                 this._pathRoot.style[L.DomUtil.TRANSFORM] =
4652                         L.DomUtil.getTranslateString(offset) + ' scale(' + scale + ') ';
4653
4654                 this._pathZooming = true;
4655         },
4656
4657         _endPathZoom: function () {
4658                 this._pathZooming = false;
4659         },
4660
4661         _updateSvgViewport: function () {
4662
4663                 if (this._pathZooming) {
4664                         // Do not update SVGs while a zoom animation is going on otherwise the animation will break.
4665                         // When the zoom animation ends we will be updated again anyway
4666                         // This fixes the case where you do a momentum move and zoom while the move is still ongoing.
4667                         return;
4668                 }
4669
4670                 this._updatePathViewport();
4671
4672                 var vp = this._pathViewport,
4673                     min = vp.min,
4674                     max = vp.max,
4675                     width = max.x - min.x,
4676                     height = max.y - min.y,
4677                     root = this._pathRoot,
4678                     pane = this._panes.overlayPane;
4679
4680                 // Hack to make flicker on drag end on mobile webkit less irritating
4681                 if (L.Browser.mobileWebkit) {
4682                         pane.removeChild(root);
4683                 }
4684
4685                 L.DomUtil.setPosition(root, min);
4686                 root.setAttribute('width', width);
4687                 root.setAttribute('height', height);
4688                 root.setAttribute('viewBox', [min.x, min.y, width, height].join(' '));
4689
4690                 if (L.Browser.mobileWebkit) {
4691                         pane.appendChild(root);
4692                 }
4693         }
4694 });
4695
4696
4697 /*
4698  * Popup extension to L.Path (polylines, polygons, circles), adding popup-related methods.
4699  */
4700
4701 L.Path.include({
4702
4703         bindPopup: function (content, options) {
4704
4705                 if (content instanceof L.Popup) {
4706                         this._popup = content;
4707                 } else {
4708                         if (!this._popup || options) {
4709                                 this._popup = new L.Popup(options, this);
4710                         }
4711                         this._popup.setContent(content);
4712                 }
4713
4714                 if (!this._popupHandlersAdded) {
4715                         this
4716                             .on('click', this._openPopup, this)
4717                             .on('remove', this.closePopup, this);
4718
4719                         this._popupHandlersAdded = true;
4720                 }
4721
4722                 return this;
4723         },
4724
4725         unbindPopup: function () {
4726                 if (this._popup) {
4727                         this._popup = null;
4728                         this
4729                             .off('click', this._openPopup)
4730                             .off('remove', this.closePopup);
4731
4732                         this._popupHandlersAdded = false;
4733                 }
4734                 return this;
4735         },
4736
4737         openPopup: function (latlng) {
4738
4739                 if (this._popup) {
4740                         // open the popup from one of the path's points if not specified
4741                         latlng = latlng || this._latlng ||
4742                                  this._latlngs[Math.floor(this._latlngs.length / 2)];
4743
4744                         this._openPopup({latlng: latlng});
4745                 }
4746
4747                 return this;
4748         },
4749
4750         closePopup: function () {
4751                 if (this._popup) {
4752                         this._popup._close();
4753                 }
4754                 return this;
4755         },
4756
4757         _openPopup: function (e) {
4758                 this._popup.setLatLng(e.latlng);
4759                 this._map.openPopup(this._popup);
4760         }
4761 });
4762
4763
4764 /*
4765  * Vector rendering for IE6-8 through VML.
4766  * Thanks to Dmitry Baranovsky and his Raphael library for inspiration!
4767  */
4768
4769 L.Browser.vml = !L.Browser.svg && (function () {
4770         try {
4771                 var div = document.createElement('div');
4772                 div.innerHTML = '<v:shape adj="1"/>';
4773
4774                 var shape = div.firstChild;
4775                 shape.style.behavior = 'url(#default#VML)';
4776
4777                 return shape && (typeof shape.adj === 'object');
4778
4779         } catch (e) {
4780                 return false;
4781         }
4782 }());
4783
4784 L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({
4785         statics: {
4786                 VML: true,
4787                 CLIP_PADDING: 0.02
4788         },
4789
4790         _createElement: (function () {
4791                 try {
4792                         document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml');
4793                         return function (name) {
4794                                 return document.createElement('<lvml:' + name + ' class="lvml">');
4795                         };
4796                 } catch (e) {
4797                         return function (name) {
4798                                 return document.createElement(
4799                                         '<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">');
4800                         };
4801                 }
4802         }()),
4803
4804         _initPath: function () {
4805                 var container = this._container = this._createElement('shape');
4806                 L.DomUtil.addClass(container, 'leaflet-vml-shape');
4807                 if (this.options.clickable) {
4808                         L.DomUtil.addClass(container, 'leaflet-clickable');
4809                 }
4810                 container.coordsize = '1 1';
4811
4812                 this._path = this._createElement('path');
4813                 container.appendChild(this._path);
4814
4815                 this._map._pathRoot.appendChild(container);
4816         },
4817
4818         _initStyle: function () {
4819                 this._updateStyle();
4820         },
4821
4822         _updateStyle: function () {
4823                 var stroke = this._stroke,
4824                     fill = this._fill,
4825                     options = this.options,
4826                     container = this._container;
4827
4828                 container.stroked = options.stroke;
4829                 container.filled = options.fill;
4830
4831                 if (options.stroke) {
4832                         if (!stroke) {
4833                                 stroke = this._stroke = this._createElement('stroke');
4834                                 stroke.endcap = 'round';
4835                                 container.appendChild(stroke);
4836                         }
4837                         stroke.weight = options.weight + 'px';
4838                         stroke.color = options.color;
4839                         stroke.opacity = options.opacity;
4840
4841                         if (options.dashArray) {
4842                                 stroke.dashStyle = options.dashArray instanceof Array ?
4843                                     options.dashArray.join(' ') :
4844                                     options.dashArray.replace(/( *, *)/g, ' ');
4845                         } else {
4846                                 stroke.dashStyle = '';
4847                         }
4848
4849                 } else if (stroke) {
4850                         container.removeChild(stroke);
4851                         this._stroke = null;
4852                 }
4853
4854                 if (options.fill) {
4855                         if (!fill) {
4856                                 fill = this._fill = this._createElement('fill');
4857                                 container.appendChild(fill);
4858                         }
4859                         fill.color = options.fillColor || options.color;
4860                         fill.opacity = options.fillOpacity;
4861
4862                 } else if (fill) {
4863                         container.removeChild(fill);
4864                         this._fill = null;
4865                 }
4866         },
4867
4868         _updatePath: function () {
4869                 var style = this._container.style;
4870
4871                 style.display = 'none';
4872                 this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug
4873                 style.display = '';
4874         }
4875 });
4876
4877 L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : {
4878         _initPathRoot: function () {
4879                 if (this._pathRoot) { return; }
4880
4881                 var root = this._pathRoot = document.createElement('div');
4882                 root.className = 'leaflet-vml-container';
4883                 this._panes.overlayPane.appendChild(root);
4884
4885                 this.on('moveend', this._updatePathViewport);
4886                 this._updatePathViewport();
4887         }
4888 });
4889
4890
4891 /*
4892  * Vector rendering for all browsers that support canvas.
4893  */
4894
4895 L.Browser.canvas = (function () {
4896         return !!document.createElement('canvas').getContext;
4897 }());
4898
4899 L.Path = (L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? L.Path : L.Path.extend({
4900         statics: {
4901                 //CLIP_PADDING: 0.02, // not sure if there's a need to set it to a small value
4902                 CANVAS: true,
4903                 SVG: false
4904         },
4905
4906         redraw: function () {
4907                 if (this._map) {
4908                         this.projectLatlngs();
4909                         this._requestUpdate();
4910                 }
4911                 return this;
4912         },
4913
4914         setStyle: function (style) {
4915                 L.setOptions(this, style);
4916
4917                 if (this._map) {
4918                         this._updateStyle();
4919                         this._requestUpdate();
4920                 }
4921                 return this;
4922         },
4923
4924         onRemove: function (map) {
4925                 map
4926                     .off('viewreset', this.projectLatlngs, this)
4927                     .off('moveend', this._updatePath, this);
4928
4929                 if (this.options.clickable) {
4930                         this._map.off('click', this._onClick, this);
4931                         this._map.off('mousemove', this._onMouseMove, this);
4932                 }
4933
4934                 this._requestUpdate();
4935
4936                 this._map = null;
4937         },
4938
4939         _requestUpdate: function () {
4940                 if (this._map && !L.Path._updateRequest) {
4941                         L.Path._updateRequest = L.Util.requestAnimFrame(this._fireMapMoveEnd, this._map);
4942                 }
4943         },
4944
4945         _fireMapMoveEnd: function () {
4946                 L.Path._updateRequest = null;
4947                 this.fire('moveend');
4948         },
4949
4950         _initElements: function () {
4951                 this._map._initPathRoot();
4952                 this._ctx = this._map._canvasCtx;
4953         },
4954
4955         _updateStyle: function () {
4956                 var options = this.options;
4957
4958                 if (options.stroke) {
4959                         this._ctx.lineWidth = options.weight;
4960                         this._ctx.strokeStyle = options.color;
4961                 }
4962                 if (options.fill) {
4963                         this._ctx.fillStyle = options.fillColor || options.color;
4964                 }
4965         },
4966
4967         _drawPath: function () {
4968                 var i, j, len, len2, point, drawMethod;
4969
4970                 this._ctx.beginPath();
4971
4972                 for (i = 0, len = this._parts.length; i < len; i++) {
4973                         for (j = 0, len2 = this._parts[i].length; j < len2; j++) {
4974                                 point = this._parts[i][j];
4975                                 drawMethod = (j === 0 ? 'move' : 'line') + 'To';
4976
4977                                 this._ctx[drawMethod](point.x, point.y);
4978                         }
4979                         // TODO refactor ugly hack
4980                         if (this instanceof L.Polygon) {
4981                                 this._ctx.closePath();
4982                         }
4983                 }
4984         },
4985
4986         _checkIfEmpty: function () {
4987                 return !this._parts.length;
4988         },
4989
4990         _updatePath: function () {
4991                 if (this._checkIfEmpty()) { return; }
4992
4993                 var ctx = this._ctx,
4994                     options = this.options;
4995
4996                 this._drawPath();
4997                 ctx.save();
4998                 this._updateStyle();
4999
5000                 if (options.fill) {
5001                         ctx.globalAlpha = options.fillOpacity;
5002                         ctx.fill();
5003                 }
5004
5005                 if (options.stroke) {
5006                         ctx.globalAlpha = options.opacity;
5007                         ctx.stroke();
5008                 }
5009
5010                 ctx.restore();
5011
5012                 // TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature
5013         },
5014
5015         _initEvents: function () {
5016                 if (this.options.clickable) {
5017                         // TODO dblclick
5018                         this._map.on('mousemove', this._onMouseMove, this);
5019                         this._map.on('click', this._onClick, this);
5020                 }
5021         },
5022
5023         _onClick: function (e) {
5024                 if (this._containsPoint(e.layerPoint)) {
5025                         this.fire('click', e);
5026                 }
5027         },
5028
5029         _onMouseMove: function (e) {
5030                 if (!this._map || this._map._animatingZoom) { return; }
5031
5032                 // TODO don't do on each move
5033                 if (this._containsPoint(e.layerPoint)) {
5034                         this._ctx.canvas.style.cursor = 'pointer';
5035                         this._mouseInside = true;
5036                         this.fire('mouseover', e);
5037
5038                 } else if (this._mouseInside) {
5039                         this._ctx.canvas.style.cursor = '';
5040                         this._mouseInside = false;
5041                         this.fire('mouseout', e);
5042                 }
5043         }
5044 });
5045
5046 L.Map.include((L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? {} : {
5047         _initPathRoot: function () {
5048                 var root = this._pathRoot,
5049                     ctx;
5050
5051                 if (!root) {
5052                         root = this._pathRoot = document.createElement('canvas');
5053                         root.style.position = 'absolute';
5054                         ctx = this._canvasCtx = root.getContext('2d');
5055
5056                         ctx.lineCap = 'round';
5057                         ctx.lineJoin = 'round';
5058
5059                         this._panes.overlayPane.appendChild(root);
5060
5061                         if (this.options.zoomAnimation) {
5062                                 this._pathRoot.className = 'leaflet-zoom-animated';
5063                                 this.on('zoomanim', this._animatePathZoom);
5064                                 this.on('zoomend', this._endPathZoom);
5065                         }
5066                         this.on('moveend', this._updateCanvasViewport);
5067                         this._updateCanvasViewport();
5068                 }
5069         },
5070
5071         _updateCanvasViewport: function () {
5072                 // don't redraw while zooming. See _updateSvgViewport for more details
5073                 if (this._pathZooming) { return; }
5074                 this._updatePathViewport();
5075
5076                 var vp = this._pathViewport,
5077                     min = vp.min,
5078                     size = vp.max.subtract(min),
5079                     root = this._pathRoot;
5080
5081                 //TODO check if this works properly on mobile webkit
5082                 L.DomUtil.setPosition(root, min);
5083                 root.width = size.x;
5084                 root.height = size.y;
5085                 root.getContext('2d').translate(-min.x, -min.y);
5086         }
5087 });
5088
5089
5090 /*
5091  * L.LineUtil contains different utility functions for line segments
5092  * and polylines (clipping, simplification, distances, etc.)
5093  */
5094
5095 /*jshint bitwise:false */ // allow bitwise oprations for this file
5096
5097 L.LineUtil = {
5098
5099         // Simplify polyline with vertex reduction and Douglas-Peucker simplification.
5100         // Improves rendering performance dramatically by lessening the number of points to draw.
5101
5102         simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
5103                 if (!tolerance || !points.length) {
5104                         return points.slice();
5105                 }
5106
5107                 var sqTolerance = tolerance * tolerance;
5108
5109                 // stage 1: vertex reduction
5110                 points = this._reducePoints(points, sqTolerance);
5111
5112                 // stage 2: Douglas-Peucker simplification
5113                 points = this._simplifyDP(points, sqTolerance);
5114
5115                 return points;
5116         },
5117
5118         // distance from a point to a segment between two points
5119         pointToSegmentDistance:  function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
5120                 return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
5121         },
5122
5123         closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
5124                 return this._sqClosestPointOnSegment(p, p1, p2);
5125         },
5126
5127         // Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
5128         _simplifyDP: function (points, sqTolerance) {
5129
5130                 var len = points.length,
5131                     ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array,
5132                     markers = new ArrayConstructor(len);
5133
5134                 markers[0] = markers[len - 1] = 1;
5135
5136                 this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
5137
5138                 var i,
5139                     newPoints = [];
5140
5141                 for (i = 0; i < len; i++) {
5142                         if (markers[i]) {
5143                                 newPoints.push(points[i]);
5144                         }
5145                 }
5146
5147                 return newPoints;
5148         },
5149
5150         _simplifyDPStep: function (points, markers, sqTolerance, first, last) {
5151
5152                 var maxSqDist = 0,
5153                     index, i, sqDist;
5154
5155                 for (i = first + 1; i <= last - 1; i++) {
5156                         sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
5157
5158                         if (sqDist > maxSqDist) {
5159                                 index = i;
5160                                 maxSqDist = sqDist;
5161                         }
5162                 }
5163
5164                 if (maxSqDist > sqTolerance) {
5165                         markers[index] = 1;
5166
5167                         this._simplifyDPStep(points, markers, sqTolerance, first, index);
5168                         this._simplifyDPStep(points, markers, sqTolerance, index, last);
5169                 }
5170         },
5171
5172         // reduce points that are too close to each other to a single point
5173         _reducePoints: function (points, sqTolerance) {
5174                 var reducedPoints = [points[0]];
5175
5176                 for (var i = 1, prev = 0, len = points.length; i < len; i++) {
5177                         if (this._sqDist(points[i], points[prev]) > sqTolerance) {
5178                                 reducedPoints.push(points[i]);
5179                                 prev = i;
5180                         }
5181                 }
5182                 if (prev < len - 1) {
5183                         reducedPoints.push(points[len - 1]);
5184                 }
5185                 return reducedPoints;
5186         },
5187
5188         // Cohen-Sutherland line clipping algorithm.
5189         // Used to avoid rendering parts of a polyline that are not currently visible.
5190
5191         clipSegment: function (a, b, bounds, useLastCode) {
5192                 var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
5193                     codeB = this._getBitCode(b, bounds),
5194
5195                     codeOut, p, newCode;
5196
5197                 // save 2nd code to avoid calculating it on the next segment
5198                 this._lastCode = codeB;
5199
5200                 while (true) {
5201                         // if a,b is inside the clip window (trivial accept)
5202                         if (!(codeA | codeB)) {
5203                                 return [a, b];
5204                         // if a,b is outside the clip window (trivial reject)
5205                         } else if (codeA & codeB) {
5206                                 return false;
5207                         // other cases
5208                         } else {
5209                                 codeOut = codeA || codeB;
5210                                 p = this._getEdgeIntersection(a, b, codeOut, bounds);
5211                                 newCode = this._getBitCode(p, bounds);
5212
5213                                 if (codeOut === codeA) {
5214                                         a = p;
5215                                         codeA = newCode;
5216                                 } else {
5217                                         b = p;
5218                                         codeB = newCode;
5219                                 }
5220                         }
5221                 }
5222         },
5223
5224         _getEdgeIntersection: function (a, b, code, bounds) {
5225                 var dx = b.x - a.x,
5226                     dy = b.y - a.y,
5227                     min = bounds.min,
5228                     max = bounds.max;
5229
5230                 if (code & 8) { // top
5231                         return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y);
5232                 } else if (code & 4) { // bottom
5233                         return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y);
5234                 } else if (code & 2) { // right
5235                         return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx);
5236                 } else if (code & 1) { // left
5237                         return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx);
5238                 }
5239         },
5240
5241         _getBitCode: function (/*Point*/ p, bounds) {
5242                 var code = 0;
5243
5244                 if (p.x < bounds.min.x) { // left
5245                         code |= 1;
5246                 } else if (p.x > bounds.max.x) { // right
5247                         code |= 2;
5248                 }
5249                 if (p.y < bounds.min.y) { // bottom
5250                         code |= 4;
5251                 } else if (p.y > bounds.max.y) { // top
5252                         code |= 8;
5253                 }
5254
5255                 return code;
5256         },
5257
5258         // square distance (to avoid unnecessary Math.sqrt calls)
5259         _sqDist: function (p1, p2) {
5260                 var dx = p2.x - p1.x,
5261                     dy = p2.y - p1.y;
5262                 return dx * dx + dy * dy;
5263         },
5264
5265         // return closest point on segment or distance to that point
5266         _sqClosestPointOnSegment: function (p, p1, p2, sqDist) {
5267                 var x = p1.x,
5268                     y = p1.y,
5269                     dx = p2.x - x,
5270                     dy = p2.y - y,
5271                     dot = dx * dx + dy * dy,
5272                     t;
5273
5274                 if (dot > 0) {
5275                         t = ((p.x - x) * dx + (p.y - y) * dy) / dot;
5276
5277                         if (t > 1) {
5278                                 x = p2.x;
5279                                 y = p2.y;
5280                         } else if (t > 0) {
5281                                 x += dx * t;
5282                                 y += dy * t;
5283                         }
5284                 }
5285
5286                 dx = p.x - x;
5287                 dy = p.y - y;
5288
5289                 return sqDist ? dx * dx + dy * dy : new L.Point(x, y);
5290         }
5291 };
5292
5293
5294 /*
5295  * L.Polyline is used to display polylines on a map.
5296  */
5297
5298 L.Polyline = L.Path.extend({
5299         initialize: function (latlngs, options) {
5300                 L.Path.prototype.initialize.call(this, options);
5301
5302                 this._latlngs = this._convertLatLngs(latlngs);
5303         },
5304
5305         options: {
5306                 // how much to simplify the polyline on each zoom level
5307                 // more = better performance and smoother look, less = more accurate
5308                 smoothFactor: 1.0,
5309                 noClip: false
5310         },
5311
5312         projectLatlngs: function () {
5313                 this._originalPoints = [];
5314
5315                 for (var i = 0, len = this._latlngs.length; i < len; i++) {
5316                         this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]);
5317                 }
5318         },
5319
5320         getPathString: function () {
5321                 for (var i = 0, len = this._parts.length, str = ''; i < len; i++) {
5322                         str += this._getPathPartStr(this._parts[i]);
5323                 }
5324                 return str;
5325         },
5326
5327         getLatLngs: function () {
5328                 return this._latlngs;
5329         },
5330
5331         setLatLngs: function (latlngs) {
5332                 this._latlngs = this._convertLatLngs(latlngs);
5333                 return this.redraw();
5334         },
5335
5336         addLatLng: function (latlng) {
5337                 this._latlngs.push(L.latLng(latlng));
5338                 return this.redraw();
5339         },
5340
5341         spliceLatLngs: function () { // (Number index, Number howMany)
5342                 var removed = [].splice.apply(this._latlngs, arguments);
5343                 this._convertLatLngs(this._latlngs, true);
5344                 this.redraw();
5345                 return removed;
5346         },
5347
5348         closestLayerPoint: function (p) {
5349                 var minDistance = Infinity, parts = this._parts, p1, p2, minPoint = null;
5350
5351                 for (var j = 0, jLen = parts.length; j < jLen; j++) {
5352                         var points = parts[j];
5353                         for (var i = 1, len = points.length; i < len; i++) {
5354                                 p1 = points[i - 1];
5355                                 p2 = points[i];
5356                                 var sqDist = L.LineUtil._sqClosestPointOnSegment(p, p1, p2, true);
5357                                 if (sqDist < minDistance) {
5358                                         minDistance = sqDist;
5359                                         minPoint = L.LineUtil._sqClosestPointOnSegment(p, p1, p2);
5360                                 }
5361                         }
5362                 }
5363                 if (minPoint) {
5364                         minPoint.distance = Math.sqrt(minDistance);
5365                 }
5366                 return minPoint;
5367         },
5368
5369         getBounds: function () {
5370                 return new L.LatLngBounds(this.getLatLngs());
5371         },
5372
5373         _convertLatLngs: function (latlngs, overwrite) {
5374                 var i, len, target = overwrite ? latlngs : [];
5375
5376                 for (i = 0, len = latlngs.length; i < len; i++) {
5377                         if (L.Util.isArray(latlngs[i]) && typeof latlngs[i][0] !== 'number') {
5378                                 return;
5379                         }
5380                         target[i] = L.latLng(latlngs[i]);
5381                 }
5382                 return target;
5383         },
5384
5385         _initEvents: function () {
5386                 L.Path.prototype._initEvents.call(this);
5387         },
5388
5389         _getPathPartStr: function (points) {
5390                 var round = L.Path.VML;
5391
5392                 for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) {
5393                         p = points[j];
5394                         if (round) {
5395                                 p._round();
5396                         }
5397                         str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
5398                 }
5399                 return str;
5400         },
5401
5402         _clipPoints: function () {
5403                 var points = this._originalPoints,
5404                     len = points.length,
5405                     i, k, segment;
5406
5407                 if (this.options.noClip) {
5408                         this._parts = [points];
5409                         return;
5410                 }
5411
5412                 this._parts = [];
5413
5414                 var parts = this._parts,
5415                     vp = this._map._pathViewport,
5416                     lu = L.LineUtil;
5417
5418                 for (i = 0, k = 0; i < len - 1; i++) {
5419                         segment = lu.clipSegment(points[i], points[i + 1], vp, i);
5420                         if (!segment) {
5421                                 continue;
5422                         }
5423
5424                         parts[k] = parts[k] || [];
5425                         parts[k].push(segment[0]);
5426
5427                         // if segment goes out of screen, or it's the last one, it's the end of the line part
5428                         if ((segment[1] !== points[i + 1]) || (i === len - 2)) {
5429                                 parts[k].push(segment[1]);
5430                                 k++;
5431                         }
5432                 }
5433         },
5434
5435         // simplify each clipped part of the polyline
5436         _simplifyPoints: function () {
5437                 var parts = this._parts,
5438                     lu = L.LineUtil;
5439
5440                 for (var i = 0, len = parts.length; i < len; i++) {
5441                         parts[i] = lu.simplify(parts[i], this.options.smoothFactor);
5442                 }
5443         },
5444
5445         _updatePath: function () {
5446                 if (!this._map) { return; }
5447
5448                 this._clipPoints();
5449                 this._simplifyPoints();
5450
5451                 L.Path.prototype._updatePath.call(this);
5452         }
5453 });
5454
5455 L.polyline = function (latlngs, options) {
5456         return new L.Polyline(latlngs, options);
5457 };
5458
5459
5460 /*
5461  * L.PolyUtil contains utility functions for polygons (clipping, etc.).
5462  */
5463
5464 /*jshint bitwise:false */ // allow bitwise operations here
5465
5466 L.PolyUtil = {};
5467
5468 /*
5469  * Sutherland-Hodgeman polygon clipping algorithm.
5470  * Used to avoid rendering parts of a polygon that are not currently visible.
5471  */
5472 L.PolyUtil.clipPolygon = function (points, bounds) {
5473         var clippedPoints,
5474             edges = [1, 4, 2, 8],
5475             i, j, k,
5476             a, b,
5477             len, edge, p,
5478             lu = L.LineUtil;
5479
5480         for (i = 0, len = points.length; i < len; i++) {
5481                 points[i]._code = lu._getBitCode(points[i], bounds);
5482         }
5483
5484         // for each edge (left, bottom, right, top)
5485         for (k = 0; k < 4; k++) {
5486                 edge = edges[k];
5487                 clippedPoints = [];
5488
5489                 for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
5490                         a = points[i];
5491                         b = points[j];
5492
5493                         // if a is inside the clip window
5494                         if (!(a._code & edge)) {
5495                                 // if b is outside the clip window (a->b goes out of screen)
5496                                 if (b._code & edge) {
5497                                         p = lu._getEdgeIntersection(b, a, edge, bounds);
5498                                         p._code = lu._getBitCode(p, bounds);
5499                                         clippedPoints.push(p);
5500                                 }
5501                                 clippedPoints.push(a);
5502
5503                         // else if b is inside the clip window (a->b enters the screen)
5504                         } else if (!(b._code & edge)) {
5505                                 p = lu._getEdgeIntersection(b, a, edge, bounds);
5506                                 p._code = lu._getBitCode(p, bounds);
5507                                 clippedPoints.push(p);
5508                         }
5509                 }
5510                 points = clippedPoints;
5511         }
5512
5513         return points;
5514 };
5515
5516
5517 /*
5518  * L.Polygon is used to display polygons on a map.
5519  */
5520
5521 L.Polygon = L.Polyline.extend({
5522         options: {
5523                 fill: true
5524         },
5525
5526         initialize: function (latlngs, options) {
5527                 var i, len, hole;
5528
5529                 L.Polyline.prototype.initialize.call(this, latlngs, options);
5530
5531                 if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
5532                         this._latlngs = this._convertLatLngs(latlngs[0]);
5533                         this._holes = latlngs.slice(1);
5534
5535                         for (i = 0, len = this._holes.length; i < len; i++) {
5536                                 hole = this._holes[i] = this._convertLatLngs(this._holes[i]);
5537                                 if (hole[0].equals(hole[hole.length - 1])) {
5538                                         hole.pop();
5539                                 }
5540                         }
5541                 }
5542
5543                 // filter out last point if its equal to the first one
5544                 latlngs = this._latlngs;
5545
5546                 if (latlngs.length >= 2 && latlngs[0].equals(latlngs[latlngs.length - 1])) {
5547                         latlngs.pop();
5548                 }
5549         },
5550
5551         projectLatlngs: function () {
5552                 L.Polyline.prototype.projectLatlngs.call(this);
5553
5554                 // project polygon holes points
5555                 // TODO move this logic to Polyline to get rid of duplication
5556                 this._holePoints = [];
5557
5558                 if (!this._holes) { return; }
5559
5560                 var i, j, len, len2;
5561
5562                 for (i = 0, len = this._holes.length; i < len; i++) {
5563                         this._holePoints[i] = [];
5564
5565                         for (j = 0, len2 = this._holes[i].length; j < len2; j++) {
5566                                 this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]);
5567                         }
5568                 }
5569         },
5570
5571         _clipPoints: function () {
5572                 var points = this._originalPoints,
5573                     newParts = [];
5574
5575                 this._parts = [points].concat(this._holePoints);
5576
5577                 if (this.options.noClip) { return; }
5578
5579                 for (var i = 0, len = this._parts.length; i < len; i++) {
5580                         var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport);
5581                         if (clipped.length) {
5582                                 newParts.push(clipped);
5583                         }
5584                 }
5585
5586                 this._parts = newParts;
5587         },
5588
5589         _getPathPartStr: function (points) {
5590                 var str = L.Polyline.prototype._getPathPartStr.call(this, points);
5591                 return str + (L.Browser.svg ? 'z' : 'x');
5592         }
5593 });
5594
5595 L.polygon = function (latlngs, options) {
5596         return new L.Polygon(latlngs, options);
5597 };
5598
5599
5600 /*
5601  * Contains L.MultiPolyline and L.MultiPolygon layers.
5602  */
5603
5604 (function () {
5605         function createMulti(Klass) {
5606
5607                 return L.FeatureGroup.extend({
5608
5609                         initialize: function (latlngs, options) {
5610                                 this._layers = {};
5611                                 this._options = options;
5612                                 this.setLatLngs(latlngs);
5613                         },
5614
5615                         setLatLngs: function (latlngs) {
5616                                 var i = 0,
5617                                     len = latlngs.length;
5618
5619                                 this.eachLayer(function (layer) {
5620                                         if (i < len) {
5621                                                 layer.setLatLngs(latlngs[i++]);
5622                                         } else {
5623                                                 this.removeLayer(layer);
5624                                         }
5625                                 }, this);
5626
5627                                 while (i < len) {
5628                                         this.addLayer(new Klass(latlngs[i++], this._options));
5629                                 }
5630
5631                                 return this;
5632                         },
5633
5634                         getLatLngs: function () {
5635                                 var latlngs = [];
5636
5637                                 this.eachLayer(function (layer) {
5638                                         latlngs.push(layer.getLatLngs());
5639                                 });
5640
5641                                 return latlngs;
5642                         }
5643                 });
5644         }
5645
5646         L.MultiPolyline = createMulti(L.Polyline);
5647         L.MultiPolygon = createMulti(L.Polygon);
5648
5649         L.multiPolyline = function (latlngs, options) {
5650                 return new L.MultiPolyline(latlngs, options);
5651         };
5652
5653         L.multiPolygon = function (latlngs, options) {
5654                 return new L.MultiPolygon(latlngs, options);
5655         };
5656 }());
5657
5658
5659 /*
5660  * L.Rectangle extends Polygon and creates a rectangle when passed a LatLngBounds object.
5661  */
5662
5663 L.Rectangle = L.Polygon.extend({
5664         initialize: function (latLngBounds, options) {
5665                 L.Polygon.prototype.initialize.call(this, this._boundsToLatLngs(latLngBounds), options);
5666         },
5667
5668         setBounds: function (latLngBounds) {
5669                 this.setLatLngs(this._boundsToLatLngs(latLngBounds));
5670         },
5671
5672         _boundsToLatLngs: function (latLngBounds) {
5673                 latLngBounds = L.latLngBounds(latLngBounds);
5674                 return [
5675                         latLngBounds.getSouthWest(),
5676                         latLngBounds.getNorthWest(),
5677                         latLngBounds.getNorthEast(),
5678                         latLngBounds.getSouthEast()
5679                 ];
5680         }
5681 });
5682
5683 L.rectangle = function (latLngBounds, options) {
5684         return new L.Rectangle(latLngBounds, options);
5685 };
5686
5687
5688 /*
5689  * L.Circle is a circle overlay (with a certain radius in meters).
5690  */
5691
5692 L.Circle = L.Path.extend({
5693         initialize: function (latlng, radius, options) {
5694                 L.Path.prototype.initialize.call(this, options);
5695
5696                 this._latlng = L.latLng(latlng);
5697                 this._mRadius = radius;
5698         },
5699
5700         options: {
5701                 fill: true
5702         },
5703
5704         setLatLng: function (latlng) {
5705                 this._latlng = L.latLng(latlng);
5706                 return this.redraw();
5707         },
5708
5709         setRadius: function (radius) {
5710                 this._mRadius = radius;
5711                 return this.redraw();
5712         },
5713
5714         projectLatlngs: function () {
5715                 var lngRadius = this._getLngRadius(),
5716                     latlng = this._latlng,
5717                     pointLeft = this._map.latLngToLayerPoint([latlng.lat, latlng.lng - lngRadius]);
5718
5719                 this._point = this._map.latLngToLayerPoint(latlng);
5720                 this._radius = Math.max(this._point.x - pointLeft.x, 1);
5721         },
5722
5723         getBounds: function () {
5724                 var lngRadius = this._getLngRadius(),
5725                     latRadius = (this._mRadius / 40075017) * 360,
5726                     latlng = this._latlng;
5727
5728                 return new L.LatLngBounds(
5729                         [latlng.lat - latRadius, latlng.lng - lngRadius],
5730                         [latlng.lat + latRadius, latlng.lng + lngRadius]);
5731         },
5732
5733         getLatLng: function () {
5734                 return this._latlng;
5735         },
5736
5737         getPathString: function () {
5738                 var p = this._point,
5739                     r = this._radius;
5740
5741                 if (this._checkIfEmpty()) {
5742                         return '';
5743                 }
5744
5745                 if (L.Browser.svg) {
5746                         return 'M' + p.x + ',' + (p.y - r) +
5747                                'A' + r + ',' + r + ',0,1,1,' +
5748                                (p.x - 0.1) + ',' + (p.y - r) + ' z';
5749                 } else {
5750                         p._round();
5751                         r = Math.round(r);
5752                         return 'AL ' + p.x + ',' + p.y + ' ' + r + ',' + r + ' 0,' + (65535 * 360);
5753                 }
5754         },
5755
5756         getRadius: function () {
5757                 return this._mRadius;
5758         },
5759
5760         // TODO Earth hardcoded, move into projection code!
5761
5762         _getLatRadius: function () {
5763                 return (this._mRadius / 40075017) * 360;
5764         },
5765
5766         _getLngRadius: function () {
5767                 return this._getLatRadius() / Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat);
5768         },
5769
5770         _checkIfEmpty: function () {
5771                 if (!this._map) {
5772                         return false;
5773                 }
5774                 var vp = this._map._pathViewport,
5775                     r = this._radius,
5776                     p = this._point;
5777
5778                 return p.x - r > vp.max.x || p.y - r > vp.max.y ||
5779                        p.x + r < vp.min.x || p.y + r < vp.min.y;
5780         }
5781 });
5782
5783 L.circle = function (latlng, radius, options) {
5784         return new L.Circle(latlng, radius, options);
5785 };
5786
5787
5788 /*
5789  * L.CircleMarker is a circle overlay with a permanent pixel radius.
5790  */
5791
5792 L.CircleMarker = L.Circle.extend({
5793         options: {
5794                 radius: 10,
5795                 weight: 2
5796         },
5797
5798         initialize: function (latlng, options) {
5799                 L.Circle.prototype.initialize.call(this, latlng, null, options);
5800                 this._radius = this.options.radius;
5801         },
5802
5803         projectLatlngs: function () {
5804                 this._point = this._map.latLngToLayerPoint(this._latlng);
5805         },
5806
5807         _updateStyle : function () {
5808                 L.Circle.prototype._updateStyle.call(this);
5809                 this.setRadius(this.options.radius);
5810         },
5811
5812         setRadius: function (radius) {
5813                 this.options.radius = this._radius = radius;
5814                 return this.redraw();
5815         }
5816 });
5817
5818 L.circleMarker = function (latlng, options) {
5819         return new L.CircleMarker(latlng, options);
5820 };
5821
5822
5823 /*
5824  * Extends L.Polyline to be able to manually detect clicks on Canvas-rendered polylines.
5825  */
5826
5827 L.Polyline.include(!L.Path.CANVAS ? {} : {
5828         _containsPoint: function (p, closed) {
5829                 var i, j, k, len, len2, dist, part,
5830                     w = this.options.weight / 2;
5831
5832                 if (L.Browser.touch) {
5833                         w += 10; // polyline click tolerance on touch devices
5834                 }
5835
5836                 for (i = 0, len = this._parts.length; i < len; i++) {
5837                         part = this._parts[i];
5838                         for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
5839                                 if (!closed && (j === 0)) {
5840                                         continue;
5841                                 }
5842
5843                                 dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]);
5844
5845                                 if (dist <= w) {
5846                                         return true;
5847                                 }
5848                         }
5849                 }
5850                 return false;
5851         }
5852 });
5853
5854
5855 /*
5856  * Extends L.Polygon to be able to manually detect clicks on Canvas-rendered polygons.
5857  */
5858
5859 L.Polygon.include(!L.Path.CANVAS ? {} : {
5860         _containsPoint: function (p) {
5861                 var inside = false,
5862                     part, p1, p2,
5863                     i, j, k,
5864                     len, len2;
5865
5866                 // TODO optimization: check if within bounds first
5867
5868                 if (L.Polyline.prototype._containsPoint.call(this, p, true)) {
5869                         // click on polygon border
5870                         return true;
5871                 }
5872
5873                 // ray casting algorithm for detecting if point is in polygon
5874
5875                 for (i = 0, len = this._parts.length; i < len; i++) {
5876                         part = this._parts[i];
5877
5878                         for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
5879                                 p1 = part[j];
5880                                 p2 = part[k];
5881
5882                                 if (((p1.y > p.y) !== (p2.y > p.y)) &&
5883                                                 (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
5884                                         inside = !inside;
5885                                 }
5886                         }
5887                 }
5888
5889                 return inside;
5890         }
5891 });
5892
5893
5894 /*
5895  * Extends L.Circle with Canvas-specific code.
5896  */
5897
5898 L.Circle.include(!L.Path.CANVAS ? {} : {
5899         _drawPath: function () {
5900                 var p = this._point;
5901                 this._ctx.beginPath();
5902                 this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2, false);
5903         },
5904
5905         _containsPoint: function (p) {
5906                 var center = this._point,
5907                     w2 = this.options.stroke ? this.options.weight / 2 : 0;
5908
5909                 return (p.distanceTo(center) <= this._radius + w2);
5910         }
5911 });
5912
5913
5914 /*
5915  * CircleMarker canvas specific drawing parts.
5916  */
5917
5918 L.CircleMarker.include(!L.Path.CANVAS ? {} : {
5919         _updateStyle: function () {
5920                 L.Path.prototype._updateStyle.call(this);
5921         }
5922 });
5923
5924
5925 /*
5926  * L.GeoJSON turns any GeoJSON data into a Leaflet layer.
5927  */
5928
5929 L.GeoJSON = L.FeatureGroup.extend({
5930
5931         initialize: function (geojson, options) {
5932                 L.setOptions(this, options);
5933
5934                 this._layers = {};
5935
5936                 if (geojson) {
5937                         this.addData(geojson);
5938                 }
5939         },
5940
5941         addData: function (geojson) {
5942                 var features = L.Util.isArray(geojson) ? geojson : geojson.features,
5943                     i, len, feature;
5944
5945                 if (features) {
5946                         for (i = 0, len = features.length; i < len; i++) {
5947                                 // Only add this if geometry or geometries are set and not null
5948                                 feature = features[i];
5949                                 if (feature.geometries || feature.geometry || feature.features || feature.coordinates) {
5950                                         this.addData(features[i]);
5951                                 }
5952                         }
5953                         return this;
5954                 }
5955
5956                 var options = this.options;
5957
5958                 if (options.filter && !options.filter(geojson)) { return; }
5959
5960                 var layer = L.GeoJSON.geometryToLayer(geojson, options.pointToLayer, options.coordsToLatLng);
5961                 layer.feature = L.GeoJSON.asFeature(geojson);
5962
5963                 layer.defaultOptions = layer.options;
5964                 this.resetStyle(layer);
5965
5966                 if (options.onEachFeature) {
5967                         options.onEachFeature(geojson, layer);
5968                 }
5969
5970                 return this.addLayer(layer);
5971         },
5972
5973         resetStyle: function (layer) {
5974                 var style = this.options.style;
5975                 if (style) {
5976                         // reset any custom styles
5977                         L.Util.extend(layer.options, layer.defaultOptions);
5978
5979                         this._setLayerStyle(layer, style);
5980                 }
5981         },
5982
5983         setStyle: function (style) {
5984                 this.eachLayer(function (layer) {
5985                         this._setLayerStyle(layer, style);
5986                 }, this);
5987         },
5988
5989         _setLayerStyle: function (layer, style) {
5990                 if (typeof style === 'function') {
5991                         style = style(layer.feature);
5992                 }
5993                 if (layer.setStyle) {
5994                         layer.setStyle(style);
5995                 }
5996         }
5997 });
5998
5999 L.extend(L.GeoJSON, {
6000         geometryToLayer: function (geojson, pointToLayer, coordsToLatLng) {
6001                 var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson,
6002                     coords = geometry.coordinates,
6003                     layers = [],
6004                     latlng, latlngs, i, len, layer;
6005
6006                 coordsToLatLng = coordsToLatLng || this.coordsToLatLng;
6007
6008                 switch (geometry.type) {
6009                 case 'Point':
6010                         latlng = coordsToLatLng(coords);
6011                         return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
6012
6013                 case 'MultiPoint':
6014                         for (i = 0, len = coords.length; i < len; i++) {
6015                                 latlng = coordsToLatLng(coords[i]);
6016                                 layer = pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
6017                                 layers.push(layer);
6018                         }
6019                         return new L.FeatureGroup(layers);
6020
6021                 case 'LineString':
6022                         latlngs = this.coordsToLatLngs(coords, 0, coordsToLatLng);
6023                         return new L.Polyline(latlngs);
6024
6025                 case 'Polygon':
6026                         latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
6027                         return new L.Polygon(latlngs);
6028
6029                 case 'MultiLineString':
6030                         latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
6031                         return new L.MultiPolyline(latlngs);
6032
6033                 case 'MultiPolygon':
6034                         latlngs = this.coordsToLatLngs(coords, 2, coordsToLatLng);
6035                         return new L.MultiPolygon(latlngs);
6036
6037                 case 'GeometryCollection':
6038                         for (i = 0, len = geometry.geometries.length; i < len; i++) {
6039
6040                                 layer = this.geometryToLayer({
6041                                         geometry: geometry.geometries[i],
6042                                         type: 'Feature',
6043                                         properties: geojson.properties
6044                                 }, pointToLayer, coordsToLatLng);
6045
6046                                 layers.push(layer);
6047                         }
6048                         return new L.FeatureGroup(layers);
6049
6050                 default:
6051                         throw new Error('Invalid GeoJSON object.');
6052                 }
6053         },
6054
6055         coordsToLatLng: function (coords) { // (Array[, Boolean]) -> LatLng
6056                 return new L.LatLng(coords[1], coords[0]);
6057         },
6058
6059         coordsToLatLngs: function (coords, levelsDeep, coordsToLatLng) { // (Array[, Number, Function]) -> Array
6060                 var latlng, i, len,
6061                     latlngs = [];
6062
6063                 for (i = 0, len = coords.length; i < len; i++) {
6064                         latlng = levelsDeep ?
6065                                 this.coordsToLatLngs(coords[i], levelsDeep - 1, coordsToLatLng) :
6066                                 (coordsToLatLng || this.coordsToLatLng)(coords[i]);
6067
6068                         latlngs.push(latlng);
6069                 }
6070
6071                 return latlngs;
6072         },
6073
6074         latLngToCoords: function (latLng) {
6075                 return [latLng.lng, latLng.lat];
6076         },
6077
6078         latLngsToCoords: function (latLngs) {
6079                 var coords = [];
6080
6081                 for (var i = 0, len = latLngs.length; i < len; i++) {
6082                         coords.push(L.GeoJSON.latLngToCoords(latLngs[i]));
6083                 }
6084
6085                 return coords;
6086         },
6087
6088         getFeature: function (layer, newGeometry) {
6089                 return layer.feature ? L.extend({}, layer.feature, {geometry: newGeometry}) : L.GeoJSON.asFeature(newGeometry);
6090         },
6091
6092         asFeature: function (geoJSON) {
6093                 if (geoJSON.type === 'Feature') {
6094                         return geoJSON;
6095                 }
6096
6097                 return {
6098                         type: 'Feature',
6099                         properties: {},
6100                         geometry: geoJSON
6101                 };
6102         }
6103 });
6104
6105 var PointToGeoJSON = {
6106         toGeoJSON: function () {
6107                 return L.GeoJSON.getFeature(this, {
6108                         type: 'Point',
6109                         coordinates: L.GeoJSON.latLngToCoords(this.getLatLng())
6110                 });
6111         }
6112 };
6113
6114 L.Marker.include(PointToGeoJSON);
6115 L.Circle.include(PointToGeoJSON);
6116 L.CircleMarker.include(PointToGeoJSON);
6117
6118 L.Polyline.include({
6119         toGeoJSON: function () {
6120                 return L.GeoJSON.getFeature(this, {
6121                         type: 'LineString',
6122                         coordinates: L.GeoJSON.latLngsToCoords(this.getLatLngs())
6123                 });
6124         }
6125 });
6126
6127 L.Polygon.include({
6128         toGeoJSON: function () {
6129                 var coords = [L.GeoJSON.latLngsToCoords(this.getLatLngs())],
6130                     i, len, hole;
6131
6132                 coords[0].push(coords[0][0]);
6133
6134                 if (this._holes) {
6135                         for (i = 0, len = this._holes.length; i < len; i++) {
6136                                 hole = L.GeoJSON.latLngsToCoords(this._holes[i]);
6137                                 hole.push(hole[0]);
6138                                 coords.push(hole);
6139                         }
6140                 }
6141
6142                 return L.GeoJSON.getFeature(this, {
6143                         type: 'Polygon',
6144                         coordinates: coords
6145                 });
6146         }
6147 });
6148
6149 (function () {
6150         function includeMulti(Klass, type) {
6151                 Klass.include({
6152                         toGeoJSON: function () {
6153                                 var coords = [];
6154
6155                                 this.eachLayer(function (layer) {
6156                                         coords.push(layer.toGeoJSON().geometry.coordinates);
6157                                 });
6158
6159                                 return L.GeoJSON.getFeature(this, {
6160                                         type: type,
6161                                         coordinates: coords
6162                                 });
6163                         }
6164                 });
6165         }
6166
6167         includeMulti(L.MultiPolyline, 'MultiLineString');
6168         includeMulti(L.MultiPolygon, 'MultiPolygon');
6169 }());
6170
6171 L.LayerGroup.include({
6172         toGeoJSON: function () {
6173                 var features = [];
6174
6175                 this.eachLayer(function (layer) {
6176                         if (layer.toGeoJSON) {
6177                                 features.push(L.GeoJSON.asFeature(layer.toGeoJSON()));
6178                         }
6179                 });
6180
6181                 return {
6182                         type: 'FeatureCollection',
6183                         features: features
6184                 };
6185         }
6186 });
6187
6188 L.geoJson = function (geojson, options) {
6189         return new L.GeoJSON(geojson, options);
6190 };
6191
6192
6193 /*
6194  * L.DomEvent contains functions for working with DOM events.
6195  */
6196
6197 L.DomEvent = {
6198         /* inspired by John Resig, Dean Edwards and YUI addEvent implementations */
6199         addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object])
6200
6201                 var id = L.stamp(fn),
6202                     key = '_leaflet_' + type + id,
6203                     handler, originalHandler, newType;
6204
6205                 if (obj[key]) { return this; }
6206
6207                 handler = function (e) {
6208                         return fn.call(context || obj, e || L.DomEvent._getEvent());
6209                 };
6210
6211                 if (L.Browser.msTouch && type.indexOf('touch') === 0) {
6212                         return this.addMsTouchListener(obj, type, handler, id);
6213                 }
6214                 if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
6215                         this.addDoubleTapListener(obj, handler, id);
6216                 }
6217
6218                 if ('addEventListener' in obj) {
6219
6220                         if (type === 'mousewheel') {
6221                                 obj.addEventListener('DOMMouseScroll', handler, false);
6222                                 obj.addEventListener(type, handler, false);
6223
6224                         } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
6225
6226                                 originalHandler = handler;
6227                                 newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout');
6228
6229                                 handler = function (e) {
6230                                         if (!L.DomEvent._checkMouse(obj, e)) { return; }
6231                                         return originalHandler(e);
6232                                 };
6233
6234                                 obj.addEventListener(newType, handler, false);
6235
6236                         } else if (type === 'click' && L.Browser.android) {
6237                                 originalHandler = handler;
6238                                 handler = function (e) {
6239                                         return L.DomEvent._filterClick(e, originalHandler);
6240                                 };
6241
6242                                 obj.addEventListener(type, handler, false);
6243                         } else {
6244                                 obj.addEventListener(type, handler, false);
6245                         }
6246
6247                 } else if ('attachEvent' in obj) {
6248                         obj.attachEvent('on' + type, handler);
6249                 }
6250
6251                 obj[key] = handler;
6252
6253                 return this;
6254         },
6255
6256         removeListener: function (obj, type, fn) {  // (HTMLElement, String, Function)
6257
6258                 var id = L.stamp(fn),
6259                     key = '_leaflet_' + type + id,
6260                     handler = obj[key];
6261
6262                 if (!handler) { return this; }
6263
6264                 if (L.Browser.msTouch && type.indexOf('touch') === 0) {
6265                         this.removeMsTouchListener(obj, type, id);
6266                 } else if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
6267                         this.removeDoubleTapListener(obj, id);
6268
6269                 } else if ('removeEventListener' in obj) {
6270
6271                         if (type === 'mousewheel') {
6272                                 obj.removeEventListener('DOMMouseScroll', handler, false);
6273                                 obj.removeEventListener(type, handler, false);
6274
6275                         } else if ((type === 'mouseenter') || (type === 'mouseleave')) {
6276                                 obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
6277                         } else {
6278                                 obj.removeEventListener(type, handler, false);
6279                         }
6280                 } else if ('detachEvent' in obj) {
6281                         obj.detachEvent('on' + type, handler);
6282                 }
6283
6284                 obj[key] = null;
6285
6286                 return this;
6287         },
6288
6289         stopPropagation: function (e) {
6290
6291                 if (e.stopPropagation) {
6292                         e.stopPropagation();
6293                 } else {
6294                         e.cancelBubble = true;
6295                 }
6296                 return this;
6297         },
6298
6299         disableClickPropagation: function (el) {
6300                 var stop = L.DomEvent.stopPropagation;
6301
6302                 for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
6303                         L.DomEvent.addListener(el, L.Draggable.START[i], stop);
6304                 }
6305
6306                 return L.DomEvent
6307                         .addListener(el, 'click', L.DomEvent._fakeStop)
6308                         .addListener(el, 'dblclick', stop);
6309         },
6310
6311         preventDefault: function (e) {
6312
6313                 if (e.preventDefault) {
6314                         e.preventDefault();
6315                 } else {
6316                         e.returnValue = false;
6317                 }
6318                 return this;
6319         },
6320
6321         stop: function (e) {
6322                 return L.DomEvent.preventDefault(e).stopPropagation(e);
6323         },
6324
6325         getMousePosition: function (e, container) {
6326
6327                 var ie7 = L.Browser.ie7,
6328                     body = document.body,
6329                     docEl = document.documentElement,
6330                     x = e.pageX ? e.pageX - body.scrollLeft - docEl.scrollLeft: e.clientX,
6331                     y = e.pageY ? e.pageY - body.scrollTop - docEl.scrollTop: e.clientY,
6332                     pos = new L.Point(x, y),
6333                     rect = container.getBoundingClientRect(),
6334                     left = rect.left - container.clientLeft,
6335                     top = rect.top - container.clientTop;
6336
6337                 // webkit (and ie <= 7) handles RTL scrollLeft different to everyone else
6338                 // https://code.google.com/p/closure-library/source/browse/trunk/closure/goog/style/bidi.js
6339                 if (!L.DomUtil.documentIsLtr() && (L.Browser.webkit || ie7)) {
6340                         left += container.scrollWidth - container.clientWidth;
6341
6342                         // ie7 shows the scrollbar by default and provides clientWidth counting it, so we
6343                         // need to add it back in if it is visible; scrollbar is on the left as we are RTL
6344                         if (ie7 && L.DomUtil.getStyle(container, 'overflow-y') !== 'hidden' &&
6345                                    L.DomUtil.getStyle(container, 'overflow') !== 'hidden') {
6346                                 left += 17;
6347                         }
6348                 }
6349
6350                 return pos._subtract(new L.Point(left, top));
6351         },
6352
6353         getWheelDelta: function (e) {
6354
6355                 var delta = 0;
6356
6357                 if (e.wheelDelta) {
6358                         delta = e.wheelDelta / 120;
6359                 }
6360                 if (e.detail) {
6361                         delta = -e.detail / 3;
6362                 }
6363                 return delta;
6364         },
6365
6366         _skipEvents: {},
6367
6368         _fakeStop: function (e) {
6369                 // fakes stopPropagation by setting a special event flag, checked/reset with L.DomEvent._skipped(e)
6370                 L.DomEvent._skipEvents[e.type] = true;
6371         },
6372
6373         _skipped: function (e) {
6374                 var skipped = this._skipEvents[e.type];
6375                 // reset when checking, as it's only used in map container and propagates outside of the map
6376                 this._skipEvents[e.type] = false;
6377                 return skipped;
6378         },
6379
6380         // check if element really left/entered the event target (for mouseenter/mouseleave)
6381         _checkMouse: function (el, e) {
6382
6383                 var related = e.relatedTarget;
6384
6385                 if (!related) { return true; }
6386
6387                 try {
6388                         while (related && (related !== el)) {
6389                                 related = related.parentNode;
6390                         }
6391                 } catch (err) {
6392                         return false;
6393                 }
6394                 return (related !== el);
6395         },
6396
6397         _getEvent: function () { // evil magic for IE
6398                 /*jshint noarg:false */
6399                 var e = window.event;
6400                 if (!e) {
6401                         var caller = arguments.callee.caller;
6402                         while (caller) {
6403                                 e = caller['arguments'][0];
6404                                 if (e && window.Event === e.constructor) {
6405                                         break;
6406                                 }
6407                                 caller = caller.caller;
6408                         }
6409                 }
6410                 return e;
6411         },
6412
6413         // this is a horrible workaround for a bug in Android where a single touch triggers two click events
6414         _filterClick: function (e, handler) {
6415                 var timeStamp = (e.timeStamp || e.originalEvent.timeStamp),
6416                         elapsed = L.DomEvent._lastClick && (timeStamp - L.DomEvent._lastClick);
6417
6418                 // are they closer together than 1000ms yet more than 100ms?
6419                 // Android typically triggers them ~300ms apart while multiple listeners
6420                 // on the same event should be triggered far faster;
6421                 // or check if click is simulated on the element, and if it is, reject any non-simulated events
6422
6423                 if ((elapsed && elapsed > 100 && elapsed < 1000) || (e.target._simulatedClick && !e._simulated)) {
6424                         L.DomEvent.stop(e);
6425                         return;
6426                 }
6427                 L.DomEvent._lastClick = timeStamp;
6428
6429                 return handler(e);
6430         }
6431 };
6432
6433 L.DomEvent.on = L.DomEvent.addListener;
6434 L.DomEvent.off = L.DomEvent.removeListener;
6435
6436
6437 /*
6438  * L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too.
6439  */
6440
6441 L.Draggable = L.Class.extend({
6442         includes: L.Mixin.Events,
6443
6444         statics: {
6445                 START: L.Browser.touch ? ['touchstart', 'mousedown'] : ['mousedown'],
6446                 END: {
6447                         mousedown: 'mouseup',
6448                         touchstart: 'touchend',
6449                         MSPointerDown: 'touchend'
6450                 },
6451                 MOVE: {
6452                         mousedown: 'mousemove',
6453                         touchstart: 'touchmove',
6454                         MSPointerDown: 'touchmove'
6455                 }
6456         },
6457
6458         initialize: function (element, dragStartTarget) {
6459                 this._element = element;
6460                 this._dragStartTarget = dragStartTarget || element;
6461         },
6462
6463         enable: function () {
6464                 if (this._enabled) { return; }
6465
6466                 for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
6467                         L.DomEvent.on(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
6468                 }
6469
6470                 this._enabled = true;
6471         },
6472
6473         disable: function () {
6474                 if (!this._enabled) { return; }
6475
6476                 for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
6477                         L.DomEvent.off(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
6478                 }
6479
6480                 this._enabled = false;
6481                 this._moved = false;
6482         },
6483
6484         _onDown: function (e) {
6485                 if (e.shiftKey || ((e.which !== 1) && (e.button !== 1) && !e.touches)) { return; }
6486
6487                 L.DomEvent
6488                         .stopPropagation(e);
6489
6490                 if (L.Draggable._disabled) { return; }
6491
6492                 L.DomUtil.disableImageDrag();
6493                 L.DomUtil.disableTextSelection();
6494
6495                 var first = e.touches ? e.touches[0] : e,
6496                     el = first.target;
6497
6498                 // if touching a link, highlight it
6499                 if (L.Browser.touch && el.tagName.toLowerCase() === 'a') {
6500                         L.DomUtil.addClass(el, 'leaflet-active');
6501                 }
6502
6503                 this._moved = false;
6504
6505                 if (this._moving) { return; }
6506
6507                 this._startPoint = new L.Point(first.clientX, first.clientY);
6508                 this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
6509
6510                 L.DomEvent
6511                     .on(document, L.Draggable.MOVE[e.type], this._onMove, this)
6512                     .on(document, L.Draggable.END[e.type], this._onUp, this);
6513         },
6514
6515         _onMove: function (e) {
6516                 if (e.touches && e.touches.length > 1) { return; }
6517
6518                 var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
6519                     newPoint = new L.Point(first.clientX, first.clientY),
6520                     offset = newPoint.subtract(this._startPoint);
6521
6522                 if (!offset.x && !offset.y) { return; }
6523
6524                 L.DomEvent.preventDefault(e);
6525
6526                 if (!this._moved) {
6527                         this.fire('dragstart');
6528
6529                         this._moved = true;
6530                         this._startPos = L.DomUtil.getPosition(this._element).subtract(offset);
6531
6532                         if (!L.Browser.touch) {
6533                                 L.DomUtil.addClass(document.body, 'leaflet-dragging');
6534                         }
6535                 }
6536
6537                 this._newPos = this._startPos.add(offset);
6538                 this._moving = true;
6539
6540                 L.Util.cancelAnimFrame(this._animRequest);
6541                 this._animRequest = L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget);
6542         },
6543
6544         _updatePosition: function () {
6545                 this.fire('predrag');
6546                 L.DomUtil.setPosition(this._element, this._newPos);
6547                 this.fire('drag');
6548         },
6549
6550         _onUp: function () {
6551                 if (!L.Browser.touch) {
6552                         L.DomUtil.removeClass(document.body, 'leaflet-dragging');
6553                 }
6554
6555                 for (var i in L.Draggable.MOVE) {
6556                         L.DomEvent
6557                             .off(document, L.Draggable.MOVE[i], this._onMove)
6558                             .off(document, L.Draggable.END[i], this._onUp);
6559                 }
6560
6561                 L.DomUtil.enableImageDrag();
6562                 L.DomUtil.enableTextSelection();
6563
6564                 if (this._moved) {
6565                         // ensure drag is not fired after dragend
6566                         L.Util.cancelAnimFrame(this._animRequest);
6567
6568                         this.fire('dragend');
6569                 }
6570
6571                 this._moving = false;
6572         }
6573 });
6574
6575
6576 /*
6577         L.Handler is a base class for handler classes that are used internally to inject
6578         interaction features like dragging to classes like Map and Marker.
6579 */
6580
6581 L.Handler = L.Class.extend({
6582         initialize: function (map) {
6583                 this._map = map;
6584         },
6585
6586         enable: function () {
6587                 if (this._enabled) { return; }
6588
6589                 this._enabled = true;
6590                 this.addHooks();
6591         },
6592
6593         disable: function () {
6594                 if (!this._enabled) { return; }
6595
6596                 this._enabled = false;
6597                 this.removeHooks();
6598         },
6599
6600         enabled: function () {
6601                 return !!this._enabled;
6602         }
6603 });
6604
6605
6606 /*
6607  * L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default.
6608  */
6609
6610 L.Map.mergeOptions({
6611         dragging: true,
6612
6613         inertia: !L.Browser.android23,
6614         inertiaDeceleration: 3400, // px/s^2
6615         inertiaMaxSpeed: Infinity, // px/s
6616         inertiaThreshold: L.Browser.touch ? 32 : 18, // ms
6617         easeLinearity: 0.25,
6618
6619         // TODO refactor, move to CRS
6620         worldCopyJump: false
6621 });
6622
6623 L.Map.Drag = L.Handler.extend({
6624         addHooks: function () {
6625                 if (!this._draggable) {
6626                         var map = this._map;
6627
6628                         this._draggable = new L.Draggable(map._mapPane, map._container);
6629
6630                         this._draggable.on({
6631                                 'dragstart': this._onDragStart,
6632                                 'drag': this._onDrag,
6633                                 'dragend': this._onDragEnd
6634                         }, this);
6635
6636                         if (map.options.worldCopyJump) {
6637                                 this._draggable.on('predrag', this._onPreDrag, this);
6638                                 map.on('viewreset', this._onViewReset, this);
6639
6640                                 this._onViewReset();
6641                         }
6642                 }
6643                 this._draggable.enable();
6644         },
6645
6646         removeHooks: function () {
6647                 this._draggable.disable();
6648         },
6649
6650         moved: function () {
6651                 return this._draggable && this._draggable._moved;
6652         },
6653
6654         _onDragStart: function () {
6655                 var map = this._map;
6656
6657                 if (map._panAnim) {
6658                         map._panAnim.stop();
6659                 }
6660
6661                 map
6662                     .fire('movestart')
6663                     .fire('dragstart');
6664
6665                 if (map.options.inertia) {
6666                         this._positions = [];
6667                         this._times = [];
6668                 }
6669         },
6670
6671         _onDrag: function () {
6672                 if (this._map.options.inertia) {
6673                         var time = this._lastTime = +new Date(),
6674                             pos = this._lastPos = this._draggable._newPos;
6675
6676                         this._positions.push(pos);
6677                         this._times.push(time);
6678
6679                         if (time - this._times[0] > 200) {
6680                                 this._positions.shift();
6681                                 this._times.shift();
6682                         }
6683                 }
6684
6685                 this._map
6686                     .fire('move')
6687                     .fire('drag');
6688         },
6689
6690         _onViewReset: function () {
6691                 // TODO fix hardcoded Earth values
6692                 var pxCenter = this._map.getSize()._divideBy(2),
6693                     pxWorldCenter = this._map.latLngToLayerPoint([0, 0]);
6694
6695                 this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
6696                 this._worldWidth = this._map.project([0, 180]).x;
6697         },
6698
6699         _onPreDrag: function () {
6700                 // TODO refactor to be able to adjust map pane position after zoom
6701                 var worldWidth = this._worldWidth,
6702                     halfWidth = Math.round(worldWidth / 2),
6703                     dx = this._initialWorldOffset,
6704                     x = this._draggable._newPos.x,
6705                     newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
6706                     newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
6707                     newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
6708
6709                 this._draggable._newPos.x = newX;
6710         },
6711
6712         _onDragEnd: function () {
6713                 var map = this._map,
6714                     options = map.options,
6715                     delay = +new Date() - this._lastTime,
6716
6717                     noInertia = !options.inertia || delay > options.inertiaThreshold || !this._positions[0];
6718
6719                 map.fire('dragend');
6720
6721                 if (noInertia) {
6722                         map.fire('moveend');
6723
6724                 } else {
6725
6726                         var direction = this._lastPos.subtract(this._positions[0]),
6727                             duration = (this._lastTime + delay - this._times[0]) / 1000,
6728                             ease = options.easeLinearity,
6729
6730                             speedVector = direction.multiplyBy(ease / duration),
6731                             speed = speedVector.distanceTo([0, 0]),
6732
6733                             limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
6734                             limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
6735
6736                             decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease),
6737                             offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
6738
6739                         if (!offset.x || !offset.y) {
6740                                 map.fire('moveend');
6741
6742                         } else {
6743                                 L.Util.requestAnimFrame(function () {
6744                                         map.panBy(offset, {
6745                                                 duration: decelerationDuration,
6746                                                 easeLinearity: ease,
6747                                                 noMoveStart: true
6748                                         });
6749                                 });
6750                         }
6751                 }
6752         }
6753 });
6754
6755 L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag);
6756
6757
6758 /*
6759  * L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
6760  */
6761
6762 L.Map.mergeOptions({
6763         doubleClickZoom: true
6764 });
6765
6766 L.Map.DoubleClickZoom = L.Handler.extend({
6767         addHooks: function () {
6768                 this._map.on('dblclick', this._onDoubleClick, this);
6769         },
6770
6771         removeHooks: function () {
6772                 this._map.off('dblclick', this._onDoubleClick, this);
6773         },
6774
6775         _onDoubleClick: function (e) {
6776                 var map = this._map,
6777                     zoom = map.getZoom() + 1;
6778
6779                 if (map.options.doubleClickZoom === 'center') {
6780                         map.setZoom(zoom);
6781                 } else {
6782                         map.setZoomAround(e.containerPoint, zoom);
6783                 }
6784         }
6785 });
6786
6787 L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom);
6788
6789
6790 /*
6791  * L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map.
6792  */
6793
6794 L.Map.mergeOptions({
6795         scrollWheelZoom: true
6796 });
6797
6798 L.Map.ScrollWheelZoom = L.Handler.extend({
6799         addHooks: function () {
6800                 L.DomEvent.on(this._map._container, 'mousewheel', this._onWheelScroll, this);
6801                 L.DomEvent.on(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
6802                 this._delta = 0;
6803         },
6804
6805         removeHooks: function () {
6806                 L.DomEvent.off(this._map._container, 'mousewheel', this._onWheelScroll);
6807                 L.DomEvent.off(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
6808         },
6809
6810         _onWheelScroll: function (e) {
6811                 var delta = L.DomEvent.getWheelDelta(e);
6812
6813                 this._delta += delta;
6814                 this._lastMousePos = this._map.mouseEventToContainerPoint(e);
6815
6816                 if (!this._startTime) {
6817                         this._startTime = +new Date();
6818                 }
6819
6820                 var left = Math.max(40 - (+new Date() - this._startTime), 0);
6821
6822                 clearTimeout(this._timer);
6823                 this._timer = setTimeout(L.bind(this._performZoom, this), left);
6824
6825                 L.DomEvent.preventDefault(e);
6826                 L.DomEvent.stopPropagation(e);
6827         },
6828
6829         _performZoom: function () {
6830                 var map = this._map,
6831                     delta = this._delta,
6832                     zoom = map.getZoom();
6833
6834                 delta = delta > 0 ? Math.ceil(delta) : Math.floor(delta);
6835                 delta = Math.max(Math.min(delta, 4), -4);
6836                 delta = map._limitZoom(zoom + delta) - zoom;
6837
6838                 this._delta = 0;
6839                 this._startTime = null;
6840
6841                 if (!delta) { return; }
6842
6843                 if (map.options.scrollWheelZoom === 'center') {
6844                         map.setZoom(zoom + delta);
6845                 } else {
6846                         map.setZoomAround(this._lastMousePos, zoom + delta);
6847                 }
6848         }
6849 });
6850
6851 L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom);
6852
6853
6854 /*
6855  * Extends the event handling code with double tap support for mobile browsers.
6856  */
6857
6858 L.extend(L.DomEvent, {
6859
6860         _touchstart: L.Browser.msTouch ? 'MSPointerDown' : 'touchstart',
6861         _touchend: L.Browser.msTouch ? 'MSPointerUp' : 'touchend',
6862
6863         // inspired by Zepto touch code by Thomas Fuchs
6864         addDoubleTapListener: function (obj, handler, id) {
6865                 var last,
6866                     doubleTap = false,
6867                     delay = 250,
6868                     touch,
6869                     pre = '_leaflet_',
6870                     touchstart = this._touchstart,
6871                     touchend = this._touchend,
6872                     trackedTouches = [];
6873
6874                 function onTouchStart(e) {
6875                         var count;
6876
6877                         if (L.Browser.msTouch) {
6878                                 trackedTouches.push(e.pointerId);
6879                                 count = trackedTouches.length;
6880                         } else {
6881                                 count = e.touches.length;
6882                         }
6883                         if (count > 1) {
6884                                 return;
6885                         }
6886
6887                         var now = Date.now(),
6888                                 delta = now - (last || now);
6889
6890                         touch = e.touches ? e.touches[0] : e;
6891                         doubleTap = (delta > 0 && delta <= delay);
6892                         last = now;
6893                 }
6894
6895                 function onTouchEnd(e) {
6896                         if (L.Browser.msTouch) {
6897                                 var idx = trackedTouches.indexOf(e.pointerId);
6898                                 if (idx === -1) {
6899                                         return;
6900                                 }
6901                                 trackedTouches.splice(idx, 1);
6902                         }
6903
6904                         if (doubleTap) {
6905                                 if (L.Browser.msTouch) {
6906                                         // work around .type being readonly with MSPointer* events
6907                                         var newTouch = { },
6908                                                 prop;
6909
6910                                         // jshint forin:false
6911                                         for (var i in touch) {
6912                                                 prop = touch[i];
6913                                                 if (typeof prop === 'function') {
6914                                                         newTouch[i] = prop.bind(touch);
6915                                                 } else {
6916                                                         newTouch[i] = prop;
6917                                                 }
6918                                         }
6919                                         touch = newTouch;
6920                                 }
6921                                 touch.type = 'dblclick';
6922                                 handler(touch);
6923                                 last = null;
6924                         }
6925                 }
6926                 obj[pre + touchstart + id] = onTouchStart;
6927                 obj[pre + touchend + id] = onTouchEnd;
6928
6929                 // on msTouch we need to listen on the document, otherwise a drag starting on the map and moving off screen
6930                 // will not come through to us, so we will lose track of how many touches are ongoing
6931                 var endElement = L.Browser.msTouch ? document.documentElement : obj;
6932
6933                 obj.addEventListener(touchstart, onTouchStart, false);
6934                 endElement.addEventListener(touchend, onTouchEnd, false);
6935
6936                 if (L.Browser.msTouch) {
6937                         endElement.addEventListener('MSPointerCancel', onTouchEnd, false);
6938                 }
6939
6940                 return this;
6941         },
6942
6943         removeDoubleTapListener: function (obj, id) {
6944                 var pre = '_leaflet_';
6945
6946                 obj.removeEventListener(this._touchstart, obj[pre + this._touchstart + id], false);
6947                 (L.Browser.msTouch ? document.documentElement : obj).removeEventListener(
6948                         this._touchend, obj[pre + this._touchend + id], false);
6949
6950                 if (L.Browser.msTouch) {
6951                         document.documentElement.removeEventListener('MSPointerCancel', obj[pre + this._touchend + id], false);
6952                 }
6953
6954                 return this;
6955         }
6956 });
6957
6958
6959 /*
6960  * Extends L.DomEvent to provide touch support for Internet Explorer and Windows-based devices.
6961  */
6962
6963 L.extend(L.DomEvent, {
6964
6965         _msTouches: [],
6966         _msDocumentListener: false,
6967
6968         // Provides a touch events wrapper for msPointer events.
6969         // Based on changes by veproza https://github.com/CloudMade/Leaflet/pull/1019
6970
6971         addMsTouchListener: function (obj, type, handler, id) {
6972
6973                 switch (type) {
6974                 case 'touchstart':
6975                         return this.addMsTouchListenerStart(obj, type, handler, id);
6976                 case 'touchend':
6977                         return this.addMsTouchListenerEnd(obj, type, handler, id);
6978                 case 'touchmove':
6979                         return this.addMsTouchListenerMove(obj, type, handler, id);
6980                 default:
6981                         throw 'Unknown touch event type';
6982                 }
6983         },
6984
6985         addMsTouchListenerStart: function (obj, type, handler, id) {
6986                 var pre = '_leaflet_',
6987                     touches = this._msTouches;
6988
6989                 var cb = function (e) {
6990
6991                         var alreadyInArray = false;
6992                         for (var i = 0; i < touches.length; i++) {
6993                                 if (touches[i].pointerId === e.pointerId) {
6994                                         alreadyInArray = true;
6995                                         break;
6996                                 }
6997                         }
6998                         if (!alreadyInArray) {
6999                                 touches.push(e);
7000                         }
7001
7002                         e.touches = touches.slice();
7003                         e.changedTouches = [e];
7004
7005                         handler(e);
7006                 };
7007
7008                 obj[pre + 'touchstart' + id] = cb;
7009                 obj.addEventListener('MSPointerDown', cb, false);
7010
7011                 // need to also listen for end events to keep the _msTouches list accurate
7012                 // this needs to be on the body and never go away
7013                 if (!this._msDocumentListener) {
7014                         var internalCb = function (e) {
7015                                 for (var i = 0; i < touches.length; i++) {
7016                                         if (touches[i].pointerId === e.pointerId) {
7017                                                 touches.splice(i, 1);
7018                                                 break;
7019                                         }
7020                                 }
7021                         };
7022                         //We listen on the documentElement as any drags that end by moving the touch off the screen get fired there
7023                         document.documentElement.addEventListener('MSPointerUp', internalCb, false);
7024                         document.documentElement.addEventListener('MSPointerCancel', internalCb, false);
7025
7026                         this._msDocumentListener = true;
7027                 }
7028
7029                 return this;
7030         },
7031
7032         addMsTouchListenerMove: function (obj, type, handler, id) {
7033                 var pre = '_leaflet_',
7034                     touches = this._msTouches;
7035
7036                 function cb(e) {
7037
7038                         // don't fire touch moves when mouse isn't down
7039                         if (e.pointerType === e.MSPOINTER_TYPE_MOUSE && e.buttons === 0) { return; }
7040
7041                         for (var i = 0; i < touches.length; i++) {
7042                                 if (touches[i].pointerId === e.pointerId) {
7043                                         touches[i] = e;
7044                                         break;
7045                                 }
7046                         }
7047
7048                         e.touches = touches.slice();
7049                         e.changedTouches = [e];
7050
7051                         handler(e);
7052                 }
7053
7054                 obj[pre + 'touchmove' + id] = cb;
7055                 obj.addEventListener('MSPointerMove', cb, false);
7056
7057                 return this;
7058         },
7059
7060         addMsTouchListenerEnd: function (obj, type, handler, id) {
7061                 var pre = '_leaflet_',
7062                     touches = this._msTouches;
7063
7064                 var cb = function (e) {
7065                         for (var i = 0; i < touches.length; i++) {
7066                                 if (touches[i].pointerId === e.pointerId) {
7067                                         touches.splice(i, 1);
7068                                         break;
7069                                 }
7070                         }
7071
7072                         e.touches = touches.slice();
7073                         e.changedTouches = [e];
7074
7075                         handler(e);
7076                 };
7077
7078                 obj[pre + 'touchend' + id] = cb;
7079                 obj.addEventListener('MSPointerUp', cb, false);
7080                 obj.addEventListener('MSPointerCancel', cb, false);
7081
7082                 return this;
7083         },
7084
7085         removeMsTouchListener: function (obj, type, id) {
7086                 var pre = '_leaflet_',
7087                     cb = obj[pre + type + id];
7088
7089                 switch (type) {
7090                 case 'touchstart':
7091                         obj.removeEventListener('MSPointerDown', cb, false);
7092                         break;
7093                 case 'touchmove':
7094                         obj.removeEventListener('MSPointerMove', cb, false);
7095                         break;
7096                 case 'touchend':
7097                         obj.removeEventListener('MSPointerUp', cb, false);
7098                         obj.removeEventListener('MSPointerCancel', cb, false);
7099                         break;
7100                 }
7101
7102                 return this;
7103         }
7104 });
7105
7106
7107 /*
7108  * L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers.
7109  */
7110
7111 L.Map.mergeOptions({
7112         touchZoom: L.Browser.touch && !L.Browser.android23
7113 });
7114
7115 L.Map.TouchZoom = L.Handler.extend({
7116         addHooks: function () {
7117                 L.DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this);
7118         },
7119
7120         removeHooks: function () {
7121                 L.DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this);
7122         },
7123
7124         _onTouchStart: function (e) {
7125                 var map = this._map;
7126
7127                 if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; }
7128
7129                 var p1 = map.mouseEventToLayerPoint(e.touches[0]),
7130                     p2 = map.mouseEventToLayerPoint(e.touches[1]),
7131                     viewCenter = map._getCenterLayerPoint();
7132
7133                 this._startCenter = p1.add(p2)._divideBy(2);
7134                 this._startDist = p1.distanceTo(p2);
7135
7136                 this._moved = false;
7137                 this._zooming = true;
7138
7139                 this._centerOffset = viewCenter.subtract(this._startCenter);
7140
7141                 if (map._panAnim) {
7142                         map._panAnim.stop();
7143                 }
7144
7145                 L.DomEvent
7146                     .on(document, 'touchmove', this._onTouchMove, this)
7147                     .on(document, 'touchend', this._onTouchEnd, this);
7148
7149                 L.DomEvent.preventDefault(e);
7150         },
7151
7152         _onTouchMove: function (e) {
7153                 var map = this._map;
7154
7155                 if (!e.touches || e.touches.length !== 2 || !this._zooming) { return; }
7156
7157                 var p1 = map.mouseEventToLayerPoint(e.touches[0]),
7158                     p2 = map.mouseEventToLayerPoint(e.touches[1]);
7159
7160                 this._scale = p1.distanceTo(p2) / this._startDist;
7161                 this._delta = p1._add(p2)._divideBy(2)._subtract(this._startCenter);
7162
7163                 if (this._scale === 1) { return; }
7164
7165                 if (!this._moved) {
7166                         L.DomUtil.addClass(map._mapPane, 'leaflet-touching');
7167
7168                         map
7169                             .fire('movestart')
7170                             .fire('zoomstart');
7171
7172                         this._moved = true;
7173                 }
7174
7175                 L.Util.cancelAnimFrame(this._animRequest);
7176                 this._animRequest = L.Util.requestAnimFrame(
7177                         this._updateOnMove, this, true, this._map._container);
7178
7179                 L.DomEvent.preventDefault(e);
7180         },
7181
7182         _updateOnMove: function () {
7183                 var map = this._map,
7184                     origin = this._getScaleOrigin(),
7185                     center = map.layerPointToLatLng(origin),
7186                     zoom = map.getScaleZoom(this._scale);
7187
7188                 map._animateZoom(center, zoom, this._startCenter, this._scale, this._delta);
7189         },
7190
7191         _onTouchEnd: function () {
7192                 if (!this._moved || !this._zooming) {
7193                         this._zooming = false;
7194                         return;
7195                 }
7196
7197                 var map = this._map;
7198
7199                 this._zooming = false;
7200                 L.DomUtil.removeClass(map._mapPane, 'leaflet-touching');
7201                 L.Util.cancelAnimFrame(this._animRequest);
7202
7203                 L.DomEvent
7204                     .off(document, 'touchmove', this._onTouchMove)
7205                     .off(document, 'touchend', this._onTouchEnd);
7206
7207                 var origin = this._getScaleOrigin(),
7208                     center = map.layerPointToLatLng(origin),
7209
7210                     oldZoom = map.getZoom(),
7211                     floatZoomDelta = map.getScaleZoom(this._scale) - oldZoom,
7212                     roundZoomDelta = (floatZoomDelta > 0 ?
7213                             Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)),
7214
7215                     zoom = map._limitZoom(oldZoom + roundZoomDelta),
7216                     scale = map.getZoomScale(zoom) / this._scale;
7217
7218                 map._animateZoom(center, zoom, origin, scale);
7219         },
7220
7221         _getScaleOrigin: function () {
7222                 var centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale);
7223                 return this._startCenter.add(centerOffset);
7224         }
7225 });
7226
7227 L.Map.addInitHook('addHandler', 'touchZoom', L.Map.TouchZoom);
7228
7229
7230 /*
7231  * L.Map.Tap is used to enable mobile hacks like quick taps and long hold.
7232  */
7233
7234 L.Map.mergeOptions({
7235         tap: true,
7236         tapTolerance: 15
7237 });
7238
7239 L.Map.Tap = L.Handler.extend({
7240         addHooks: function () {
7241                 L.DomEvent.on(this._map._container, 'touchstart', this._onDown, this);
7242         },
7243
7244         removeHooks: function () {
7245                 L.DomEvent.off(this._map._container, 'touchstart', this._onDown, this);
7246         },
7247
7248         _onDown: function (e) {
7249                 if (!e.touches) { return; }
7250
7251                 L.DomEvent.preventDefault(e);
7252
7253                 this._fireClick = true;
7254
7255                 // don't simulate click or track longpress if more than 1 touch
7256                 if (e.touches.length > 1) {
7257                         this._fireClick = false;
7258                         clearTimeout(this._holdTimeout);
7259                         return;
7260                 }
7261
7262                 var first = e.touches[0],
7263                     el = first.target;
7264
7265                 this._startPos = this._newPos = new L.Point(first.clientX, first.clientY);
7266
7267                 // if touching a link, highlight it
7268                 if (el.tagName.toLowerCase() === 'a') {
7269                         L.DomUtil.addClass(el, 'leaflet-active');
7270                 }
7271
7272                 // simulate long hold but setting a timeout
7273                 this._holdTimeout = setTimeout(L.bind(function () {
7274                         if (this._isTapValid()) {
7275                                 this._fireClick = false;
7276                                 this._onUp();
7277                                 this._simulateEvent('contextmenu', first);
7278                         }
7279                 }, this), 1000);
7280
7281                 L.DomEvent
7282                         .on(document, 'touchmove', this._onMove, this)
7283                         .on(document, 'touchend', this._onUp, this);
7284         },
7285
7286         _onUp: function (e) {
7287                 clearTimeout(this._holdTimeout);
7288
7289                 L.DomEvent
7290                         .off(document, 'touchmove', this._onMove, this)
7291                         .off(document, 'touchend', this._onUp, this);
7292
7293                 if (this._fireClick && e && e.changedTouches) {
7294
7295                         var first = e.changedTouches[0],
7296                             el = first.target;
7297
7298                         if (el.tagName.toLowerCase() === 'a') {
7299                                 L.DomUtil.removeClass(el, 'leaflet-active');
7300                         }
7301
7302                         // simulate click if the touch didn't move too much
7303                         if (this._isTapValid()) {
7304                                 this._simulateEvent('click', first);
7305                         }
7306                 }
7307         },
7308
7309         _isTapValid: function () {
7310                 return this._newPos.distanceTo(this._startPos) <= this._map.options.tapTolerance;
7311         },
7312
7313         _onMove: function (e) {
7314                 var first = e.touches[0];
7315                 this._newPos = new L.Point(first.clientX, first.clientY);
7316         },
7317
7318         _simulateEvent: function (type, e) {
7319                 var simulatedEvent = document.createEvent('MouseEvents');
7320
7321                 simulatedEvent._simulated = true;
7322                 e.target._simulatedClick = true;
7323
7324                 simulatedEvent.initMouseEvent(
7325                         type, true, true, window, 1,
7326                         e.screenX, e.screenY,
7327                         e.clientX, e.clientY,
7328                         false, false, false, false, 0, null);
7329
7330                 e.target.dispatchEvent(simulatedEvent);
7331         }
7332 });
7333
7334 if (L.Browser.touch && !L.Browser.msTouch) {
7335         L.Map.addInitHook('addHandler', 'tap', L.Map.Tap);
7336 }
7337
7338
7339 /*
7340  * L.Handler.ShiftDragZoom is used to add shift-drag zoom interaction to the map
7341   * (zoom to a selected bounding box), enabled by default.
7342  */
7343
7344 L.Map.mergeOptions({
7345         boxZoom: true
7346 });
7347
7348 L.Map.BoxZoom = L.Handler.extend({
7349         initialize: function (map) {
7350                 this._map = map;
7351                 this._container = map._container;
7352                 this._pane = map._panes.overlayPane;
7353         },
7354
7355         addHooks: function () {
7356                 L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
7357         },
7358
7359         removeHooks: function () {
7360                 L.DomEvent.off(this._container, 'mousedown', this._onMouseDown);
7361         },
7362
7363         _onMouseDown: function (e) {
7364                 if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
7365
7366                 L.DomUtil.disableTextSelection();
7367                 L.DomUtil.disableImageDrag();
7368
7369                 this._startLayerPoint = this._map.mouseEventToLayerPoint(e);
7370
7371                 this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane);
7372                 L.DomUtil.setPosition(this._box, this._startLayerPoint);
7373
7374                 //TODO refactor: move cursor to styles
7375                 this._container.style.cursor = 'crosshair';
7376
7377                 L.DomEvent
7378                     .on(document, 'mousemove', this._onMouseMove, this)
7379                     .on(document, 'mouseup', this._onMouseUp, this)
7380                     .on(document, 'keydown', this._onKeyDown, this);
7381
7382                 this._map.fire('boxzoomstart');
7383         },
7384
7385         _onMouseMove: function (e) {
7386                 var startPoint = this._startLayerPoint,
7387                     box = this._box,
7388
7389                     layerPoint = this._map.mouseEventToLayerPoint(e),
7390                     offset = layerPoint.subtract(startPoint),
7391
7392                     newPos = new L.Point(
7393                         Math.min(layerPoint.x, startPoint.x),
7394                         Math.min(layerPoint.y, startPoint.y));
7395
7396                 L.DomUtil.setPosition(box, newPos);
7397
7398                 // TODO refactor: remove hardcoded 4 pixels
7399                 box.style.width  = (Math.max(0, Math.abs(offset.x) - 4)) + 'px';
7400                 box.style.height = (Math.max(0, Math.abs(offset.y) - 4)) + 'px';
7401         },
7402
7403         _finish: function () {
7404                 this._pane.removeChild(this._box);
7405                 this._container.style.cursor = '';
7406
7407                 L.DomUtil.enableTextSelection();
7408                 L.DomUtil.enableImageDrag();
7409
7410                 L.DomEvent
7411                     .off(document, 'mousemove', this._onMouseMove)
7412                     .off(document, 'mouseup', this._onMouseUp)
7413                     .off(document, 'keydown', this._onKeyDown);
7414         },
7415
7416         _onMouseUp: function (e) {
7417
7418                 this._finish();
7419
7420                 var map = this._map,
7421                     layerPoint = map.mouseEventToLayerPoint(e);
7422
7423                 if (this._startLayerPoint.equals(layerPoint)) { return; }
7424
7425                 var bounds = new L.LatLngBounds(
7426                         map.layerPointToLatLng(this._startLayerPoint),
7427                         map.layerPointToLatLng(layerPoint));
7428
7429                 map.fitBounds(bounds);
7430
7431                 map.fire('boxzoomend', {
7432                         boxZoomBounds: bounds
7433                 });
7434         },
7435
7436         _onKeyDown: function (e) {
7437                 if (e.keyCode === 27) {
7438                         this._finish();
7439                 }
7440         }
7441 });
7442
7443 L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom);
7444
7445
7446 /*
7447  * L.Map.Keyboard is handling keyboard interaction with the map, enabled by default.
7448  */
7449
7450 L.Map.mergeOptions({
7451         keyboard: true,
7452         keyboardPanOffset: 80,
7453         keyboardZoomOffset: 1
7454 });
7455
7456 L.Map.Keyboard = L.Handler.extend({
7457
7458         keyCodes: {
7459                 left:    [37],
7460                 right:   [39],
7461                 down:    [40],
7462                 up:      [38],
7463                 zoomIn:  [187, 107, 61],
7464                 zoomOut: [189, 109, 173]
7465         },
7466
7467         initialize: function (map) {
7468                 this._map = map;
7469
7470                 this._setPanOffset(map.options.keyboardPanOffset);
7471                 this._setZoomOffset(map.options.keyboardZoomOffset);
7472         },
7473
7474         addHooks: function () {
7475                 var container = this._map._container;
7476
7477                 // make the container focusable by tabbing
7478                 if (container.tabIndex === -1) {
7479                         container.tabIndex = '0';
7480                 }
7481
7482                 L.DomEvent
7483                     .on(container, 'focus', this._onFocus, this)
7484                     .on(container, 'blur', this._onBlur, this)
7485                     .on(container, 'mousedown', this._onMouseDown, this);
7486
7487                 this._map
7488                     .on('focus', this._addHooks, this)
7489                     .on('blur', this._removeHooks, this);
7490         },
7491
7492         removeHooks: function () {
7493                 this._removeHooks();
7494
7495                 var container = this._map._container;
7496
7497                 L.DomEvent
7498                     .off(container, 'focus', this._onFocus, this)
7499                     .off(container, 'blur', this._onBlur, this)
7500                     .off(container, 'mousedown', this._onMouseDown, this);
7501
7502                 this._map
7503                     .off('focus', this._addHooks, this)
7504                     .off('blur', this._removeHooks, this);
7505         },
7506
7507         _onMouseDown: function () {
7508                 if (this._focused) { return; }
7509
7510                 var body = document.body,
7511                     docEl = document.documentElement,
7512                     top = body.scrollTop || docEl.scrollTop,
7513                     left = body.scrollTop || docEl.scrollLeft;
7514
7515                 this._map._container.focus();
7516
7517                 window.scrollTo(left, top);
7518         },
7519
7520         _onFocus: function () {
7521                 this._focused = true;
7522                 this._map.fire('focus');
7523         },
7524
7525         _onBlur: function () {
7526                 this._focused = false;
7527                 this._map.fire('blur');
7528         },
7529
7530         _setPanOffset: function (pan) {
7531                 var keys = this._panKeys = {},
7532                     codes = this.keyCodes,
7533                     i, len;
7534
7535                 for (i = 0, len = codes.left.length; i < len; i++) {
7536                         keys[codes.left[i]] = [-1 * pan, 0];
7537                 }
7538                 for (i = 0, len = codes.right.length; i < len; i++) {
7539                         keys[codes.right[i]] = [pan, 0];
7540                 }
7541                 for (i = 0, len = codes.down.length; i < len; i++) {
7542                         keys[codes.down[i]] = [0, pan];
7543                 }
7544                 for (i = 0, len = codes.up.length; i < len; i++) {
7545                         keys[codes.up[i]] = [0, -1 * pan];
7546                 }
7547         },
7548
7549         _setZoomOffset: function (zoom) {
7550                 var keys = this._zoomKeys = {},
7551                     codes = this.keyCodes,
7552                     i, len;
7553
7554                 for (i = 0, len = codes.zoomIn.length; i < len; i++) {
7555                         keys[codes.zoomIn[i]] = zoom;
7556                 }
7557                 for (i = 0, len = codes.zoomOut.length; i < len; i++) {
7558                         keys[codes.zoomOut[i]] = -zoom;
7559                 }
7560         },
7561
7562         _addHooks: function () {
7563                 L.DomEvent.on(document, 'keydown', this._onKeyDown, this);
7564         },
7565
7566         _removeHooks: function () {
7567                 L.DomEvent.off(document, 'keydown', this._onKeyDown, this);
7568         },
7569
7570         _onKeyDown: function (e) {
7571                 var key = e.keyCode,
7572                     map = this._map;
7573
7574                 if (key in this._panKeys) {
7575
7576                         if (map._panAnim && map._panAnim._inProgress) { return; }
7577
7578                         map.panBy(this._panKeys[key]);
7579
7580                         if (map.options.maxBounds) {
7581                                 map.panInsideBounds(map.options.maxBounds);
7582                         }
7583
7584                 } else if (key in this._zoomKeys) {
7585                         map.setZoom(map.getZoom() + this._zoomKeys[key]);
7586
7587                 } else {
7588                         return;
7589                 }
7590
7591                 L.DomEvent.stop(e);
7592         }
7593 });
7594
7595 L.Map.addInitHook('addHandler', 'keyboard', L.Map.Keyboard);
7596
7597
7598 /*
7599  * L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable.
7600  */
7601
7602 L.Handler.MarkerDrag = L.Handler.extend({
7603         initialize: function (marker) {
7604                 this._marker = marker;
7605         },
7606
7607         addHooks: function () {
7608                 var icon = this._marker._icon;
7609                 if (!this._draggable) {
7610                         this._draggable = new L.Draggable(icon, icon);
7611                 }
7612
7613                 this._draggable
7614                         .on('dragstart', this._onDragStart, this)
7615                         .on('drag', this._onDrag, this)
7616                         .on('dragend', this._onDragEnd, this);
7617                 this._draggable.enable();
7618         },
7619
7620         removeHooks: function () {
7621                 this._draggable
7622                         .off('dragstart', this._onDragStart, this)
7623                         .off('drag', this._onDrag, this)
7624                         .off('dragend', this._onDragEnd, this);
7625
7626                 this._draggable.disable();
7627         },
7628
7629         moved: function () {
7630                 return this._draggable && this._draggable._moved;
7631         },
7632
7633         _onDragStart: function () {
7634                 this._marker
7635                     .closePopup()
7636                     .fire('movestart')
7637                     .fire('dragstart');
7638         },
7639
7640         _onDrag: function () {
7641                 var marker = this._marker,
7642                     shadow = marker._shadow,
7643                     iconPos = L.DomUtil.getPosition(marker._icon),
7644                     latlng = marker._map.layerPointToLatLng(iconPos);
7645
7646                 // update shadow position
7647                 if (shadow) {
7648                         L.DomUtil.setPosition(shadow, iconPos);
7649                 }
7650
7651                 marker._latlng = latlng;
7652
7653                 marker
7654                     .fire('move', {latlng: latlng})
7655                     .fire('drag');
7656         },
7657
7658         _onDragEnd: function () {
7659                 this._marker
7660                     .fire('moveend')
7661                     .fire('dragend');
7662         }
7663 });
7664
7665
7666 /*
7667  * L.Control is a base class for implementing map controls. Handles positioning.
7668  * All other controls extend from this class.
7669  */
7670
7671 L.Control = L.Class.extend({
7672         options: {
7673                 position: 'topright'
7674         },
7675
7676         initialize: function (options) {
7677                 L.setOptions(this, options);
7678         },
7679
7680         getPosition: function () {
7681                 return this.options.position;
7682         },
7683
7684         setPosition: function (position) {
7685                 var map = this._map;
7686
7687                 if (map) {
7688                         map.removeControl(this);
7689                 }
7690
7691                 this.options.position = position;
7692
7693                 if (map) {
7694                         map.addControl(this);
7695                 }
7696
7697                 return this;
7698         },
7699
7700         getContainer: function () {
7701                 return this._container;
7702         },
7703
7704         addTo: function (map) {
7705                 this._map = map;
7706
7707                 var container = this._container = this.onAdd(map),
7708                     pos = this.getPosition(),
7709                     corner = map._controlCorners[pos];
7710
7711                 L.DomUtil.addClass(container, 'leaflet-control');
7712
7713                 if (pos.indexOf('bottom') !== -1) {
7714                         corner.insertBefore(container, corner.firstChild);
7715                 } else {
7716                         corner.appendChild(container);
7717                 }
7718
7719                 return this;
7720         },
7721
7722         removeFrom: function (map) {
7723                 var pos = this.getPosition(),
7724                     corner = map._controlCorners[pos];
7725
7726                 corner.removeChild(this._container);
7727                 this._map = null;
7728
7729                 if (this.onRemove) {
7730                         this.onRemove(map);
7731                 }
7732
7733                 return this;
7734         }
7735 });
7736
7737 L.control = function (options) {
7738         return new L.Control(options);
7739 };
7740
7741
7742 // adds control-related methods to L.Map
7743
7744 L.Map.include({
7745         addControl: function (control) {
7746                 control.addTo(this);
7747                 return this;
7748         },
7749
7750         removeControl: function (control) {
7751                 control.removeFrom(this);
7752                 return this;
7753         },
7754
7755         _initControlPos: function () {
7756                 var corners = this._controlCorners = {},
7757                     l = 'leaflet-',
7758                     container = this._controlContainer =
7759                             L.DomUtil.create('div', l + 'control-container', this._container);
7760
7761                 function createCorner(vSide, hSide) {
7762                         var className = l + vSide + ' ' + l + hSide;
7763
7764                         corners[vSide + hSide] = L.DomUtil.create('div', className, container);
7765                 }
7766
7767                 createCorner('top', 'left');
7768                 createCorner('top', 'right');
7769                 createCorner('bottom', 'left');
7770                 createCorner('bottom', 'right');
7771         },
7772
7773         _clearControlPos: function () {
7774                 this._container.removeChild(this._controlContainer);
7775         }
7776 });
7777
7778
7779 /*
7780  * L.Control.Zoom is used for the default zoom buttons on the map.
7781  */
7782
7783 L.Control.Zoom = L.Control.extend({
7784         options: {
7785                 position: 'topleft'
7786         },
7787
7788         onAdd: function (map) {
7789                 var zoomName = 'leaflet-control-zoom',
7790                     container = L.DomUtil.create('div', zoomName + ' leaflet-bar');
7791
7792                 this._map = map;
7793
7794                 this._zoomInButton  = this._createButton(
7795                         '+', 'Zoom in',  zoomName + '-in',  container, this._zoomIn,  this);
7796                 this._zoomOutButton = this._createButton(
7797                         '-', 'Zoom out', zoomName + '-out', container, this._zoomOut, this);
7798
7799                 map.on('zoomend zoomlevelschange', this._updateDisabled, this);
7800
7801                 return container;
7802         },
7803
7804         onRemove: function (map) {
7805                 map.off('zoomend zoomlevelschange', this._updateDisabled, this);
7806         },
7807
7808         _zoomIn: function (e) {
7809                 this._map.zoomIn(e.shiftKey ? 3 : 1);
7810         },
7811
7812         _zoomOut: function (e) {
7813                 this._map.zoomOut(e.shiftKey ? 3 : 1);
7814         },
7815
7816         _createButton: function (html, title, className, container, fn, context) {
7817                 var link = L.DomUtil.create('a', className, container);
7818                 link.innerHTML = html;
7819                 link.href = '#';
7820                 link.title = title;
7821
7822                 var stop = L.DomEvent.stopPropagation;
7823
7824                 L.DomEvent
7825                     .on(link, 'click', stop)
7826                     .on(link, 'mousedown', stop)
7827                     .on(link, 'dblclick', stop)
7828                     .on(link, 'click', L.DomEvent.preventDefault)
7829                     .on(link, 'click', fn, context);
7830
7831                 return link;
7832         },
7833
7834         _updateDisabled: function () {
7835                 var map = this._map,
7836                         className = 'leaflet-disabled';
7837
7838                 L.DomUtil.removeClass(this._zoomInButton, className);
7839                 L.DomUtil.removeClass(this._zoomOutButton, className);
7840
7841                 if (map._zoom === map.getMinZoom()) {
7842                         L.DomUtil.addClass(this._zoomOutButton, className);
7843                 }
7844                 if (map._zoom === map.getMaxZoom()) {
7845                         L.DomUtil.addClass(this._zoomInButton, className);
7846                 }
7847         }
7848 });
7849
7850 L.Map.mergeOptions({
7851         zoomControl: true
7852 });
7853
7854 L.Map.addInitHook(function () {
7855         if (this.options.zoomControl) {
7856                 this.zoomControl = new L.Control.Zoom();
7857                 this.addControl(this.zoomControl);
7858         }
7859 });
7860
7861 L.control.zoom = function (options) {
7862         return new L.Control.Zoom(options);
7863 };
7864
7865
7866
7867 /*
7868  * L.Control.Attribution is used for displaying attribution on the map (added by default).
7869  */
7870
7871 L.Control.Attribution = L.Control.extend({
7872         options: {
7873                 position: 'bottomright',
7874                 prefix: '<a href="http://leafletjs.com" title="A JS library for interactive maps">Leaflet</a>'
7875         },
7876
7877         initialize: function (options) {
7878                 L.setOptions(this, options);
7879
7880                 this._attributions = {};
7881         },
7882
7883         onAdd: function (map) {
7884                 this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
7885                 L.DomEvent.disableClickPropagation(this._container);
7886
7887                 map
7888                     .on('layeradd', this._onLayerAdd, this)
7889                     .on('layerremove', this._onLayerRemove, this);
7890
7891                 this._update();
7892
7893                 return this._container;
7894         },
7895
7896         onRemove: function (map) {
7897                 map
7898                     .off('layeradd', this._onLayerAdd)
7899                     .off('layerremove', this._onLayerRemove);
7900
7901         },
7902
7903         setPrefix: function (prefix) {
7904                 this.options.prefix = prefix;
7905                 this._update();
7906                 return this;
7907         },
7908
7909         addAttribution: function (text) {
7910                 if (!text) { return; }
7911
7912                 if (!this._attributions[text]) {
7913                         this._attributions[text] = 0;
7914                 }
7915                 this._attributions[text]++;
7916
7917                 this._update();
7918
7919                 return this;
7920         },
7921
7922         removeAttribution: function (text) {
7923                 if (!text) { return; }
7924
7925                 if (this._attributions[text]) {
7926                         this._attributions[text]--;
7927                         this._update();
7928                 }
7929
7930                 return this;
7931         },
7932
7933         _update: function () {
7934                 if (!this._map) { return; }
7935
7936                 var attribs = [];
7937
7938                 for (var i in this._attributions) {
7939                         if (this._attributions[i]) {
7940                                 attribs.push(i);
7941                         }
7942                 }
7943
7944                 var prefixAndAttribs = [];
7945
7946                 if (this.options.prefix) {
7947                         prefixAndAttribs.push(this.options.prefix);
7948                 }
7949                 if (attribs.length) {
7950                         prefixAndAttribs.push(attribs.join(', '));
7951                 }
7952
7953                 this._container.innerHTML = prefixAndAttribs.join(' | ');
7954         },
7955
7956         _onLayerAdd: function (e) {
7957                 if (e.layer.getAttribution) {
7958                         this.addAttribution(e.layer.getAttribution());
7959                 }
7960         },
7961
7962         _onLayerRemove: function (e) {
7963                 if (e.layer.getAttribution) {
7964                         this.removeAttribution(e.layer.getAttribution());
7965                 }
7966         }
7967 });
7968
7969 L.Map.mergeOptions({
7970         attributionControl: true
7971 });
7972
7973 L.Map.addInitHook(function () {
7974         if (this.options.attributionControl) {
7975                 this.attributionControl = (new L.Control.Attribution()).addTo(this);
7976         }
7977 });
7978
7979 L.control.attribution = function (options) {
7980         return new L.Control.Attribution(options);
7981 };
7982
7983
7984 /*
7985  * L.Control.Scale is used for displaying metric/imperial scale on the map.
7986  */
7987
7988 L.Control.Scale = L.Control.extend({
7989         options: {
7990                 position: 'bottomleft',
7991                 maxWidth: 100,
7992                 metric: true,
7993                 imperial: true,
7994                 updateWhenIdle: false
7995         },
7996
7997         onAdd: function (map) {
7998                 this._map = map;
7999
8000                 var className = 'leaflet-control-scale',
8001                     container = L.DomUtil.create('div', className),
8002                     options = this.options;
8003
8004                 this._addScales(options, className, container);
8005
8006                 map.on(options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
8007                 map.whenReady(this._update, this);
8008
8009                 return container;
8010         },
8011
8012         onRemove: function (map) {
8013                 map.off(this.options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
8014         },
8015
8016         _addScales: function (options, className, container) {
8017                 if (options.metric) {
8018                         this._mScale = L.DomUtil.create('div', className + '-line', container);
8019                 }
8020                 if (options.imperial) {
8021                         this._iScale = L.DomUtil.create('div', className + '-line', container);
8022                 }
8023         },
8024
8025         _update: function () {
8026                 var bounds = this._map.getBounds(),
8027                     centerLat = bounds.getCenter().lat,
8028                     halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180),
8029                     dist = halfWorldMeters * (bounds.getNorthEast().lng - bounds.getSouthWest().lng) / 180,
8030
8031                     size = this._map.getSize(),
8032                     options = this.options,
8033                     maxMeters = 0;
8034
8035                 if (size.x > 0) {
8036                         maxMeters = dist * (options.maxWidth / size.x);
8037                 }
8038
8039                 this._updateScales(options, maxMeters);
8040         },
8041
8042         _updateScales: function (options, maxMeters) {
8043                 if (options.metric && maxMeters) {
8044                         this._updateMetric(maxMeters);
8045                 }
8046
8047                 if (options.imperial && maxMeters) {
8048                         this._updateImperial(maxMeters);
8049                 }
8050         },
8051
8052         _updateMetric: function (maxMeters) {
8053                 var meters = this._getRoundNum(maxMeters);
8054
8055                 this._mScale.style.width = this._getScaleWidth(meters / maxMeters) + 'px';
8056                 this._mScale.innerHTML = meters < 1000 ? meters + ' m' : (meters / 1000) + ' km';
8057         },
8058
8059         _updateImperial: function (maxMeters) {
8060                 var maxFeet = maxMeters * 3.2808399,
8061                     scale = this._iScale,
8062                     maxMiles, miles, feet;
8063
8064                 if (maxFeet > 5280) {
8065                         maxMiles = maxFeet / 5280;
8066                         miles = this._getRoundNum(maxMiles);
8067
8068                         scale.style.width = this._getScaleWidth(miles / maxMiles) + 'px';
8069                         scale.innerHTML = miles + ' mi';
8070
8071                 } else {
8072                         feet = this._getRoundNum(maxFeet);
8073
8074                         scale.style.width = this._getScaleWidth(feet / maxFeet) + 'px';
8075                         scale.innerHTML = feet + ' ft';
8076                 }
8077         },
8078
8079         _getScaleWidth: function (ratio) {
8080                 return Math.round(this.options.maxWidth * ratio) - 10;
8081         },
8082
8083         _getRoundNum: function (num) {
8084                 var pow10 = Math.pow(10, (Math.floor(num) + '').length - 1),
8085                     d = num / pow10;
8086
8087                 d = d >= 10 ? 10 : d >= 5 ? 5 : d >= 3 ? 3 : d >= 2 ? 2 : 1;
8088
8089                 return pow10 * d;
8090         }
8091 });
8092
8093 L.control.scale = function (options) {
8094         return new L.Control.Scale(options);
8095 };
8096
8097
8098 /*
8099  * L.Control.Layers is a control to allow users to switch between different layers on the map.
8100  */
8101
8102 L.Control.Layers = L.Control.extend({
8103         options: {
8104                 collapsed: true,
8105                 position: 'topright',
8106                 autoZIndex: true
8107         },
8108
8109         initialize: function (baseLayers, overlays, options) {
8110                 L.setOptions(this, options);
8111
8112                 this._layers = {};
8113                 this._lastZIndex = 0;
8114                 this._handlingClick = false;
8115
8116                 for (var i in baseLayers) {
8117                         this._addLayer(baseLayers[i], i);
8118                 }
8119
8120                 for (i in overlays) {
8121                         this._addLayer(overlays[i], i, true);
8122                 }
8123         },
8124
8125         onAdd: function (map) {
8126                 this._initLayout();
8127                 this._update();
8128
8129                 map
8130                     .on('layeradd', this._onLayerChange, this)
8131                     .on('layerremove', this._onLayerChange, this);
8132
8133                 return this._container;
8134         },
8135
8136         onRemove: function (map) {
8137                 map
8138                     .off('layeradd', this._onLayerChange)
8139                     .off('layerremove', this._onLayerChange);
8140         },
8141
8142         addBaseLayer: function (layer, name) {
8143                 this._addLayer(layer, name);
8144                 this._update();
8145                 return this;
8146         },
8147
8148         addOverlay: function (layer, name) {
8149                 this._addLayer(layer, name, true);
8150                 this._update();
8151                 return this;
8152         },
8153
8154         removeLayer: function (layer) {
8155                 var id = L.stamp(layer);
8156                 delete this._layers[id];
8157                 this._update();
8158                 return this;
8159         },
8160
8161         _initLayout: function () {
8162                 var className = 'leaflet-control-layers',
8163                     container = this._container = L.DomUtil.create('div', className);
8164
8165                 //Makes this work on IE10 Touch devices by stopping it from firing a mouseout event when the touch is released
8166                 container.setAttribute('aria-haspopup', true);
8167
8168                 if (!L.Browser.touch) {
8169                         L.DomEvent.disableClickPropagation(container);
8170                         L.DomEvent.on(container, 'mousewheel', L.DomEvent.stopPropagation);
8171                 } else {
8172                         L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
8173                 }
8174
8175                 var form = this._form = L.DomUtil.create('form', className + '-list');
8176
8177                 if (this.options.collapsed) {
8178                         if (!L.Browser.android) {
8179                                 L.DomEvent
8180                                     .on(container, 'mouseover', this._expand, this)
8181                                     .on(container, 'mouseout', this._collapse, this);
8182                         }
8183                         var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container);
8184                         link.href = '#';
8185                         link.title = 'Layers';
8186
8187                         if (L.Browser.touch) {
8188                                 L.DomEvent
8189                                     .on(link, 'click', L.DomEvent.stop)
8190                                     .on(link, 'click', this._expand, this);
8191                         }
8192                         else {
8193                                 L.DomEvent.on(link, 'focus', this._expand, this);
8194                         }
8195
8196                         this._map.on('click', this._collapse, this);
8197                         // TODO keyboard accessibility
8198                 } else {
8199                         this._expand();
8200                 }
8201
8202                 this._baseLayersList = L.DomUtil.create('div', className + '-base', form);
8203                 this._separator = L.DomUtil.create('div', className + '-separator', form);
8204                 this._overlaysList = L.DomUtil.create('div', className + '-overlays', form);
8205
8206                 container.appendChild(form);
8207         },
8208
8209         _addLayer: function (layer, name, overlay) {
8210                 var id = L.stamp(layer);
8211
8212                 this._layers[id] = {
8213                         layer: layer,
8214                         name: name,
8215                         overlay: overlay
8216                 };
8217
8218                 if (this.options.autoZIndex && layer.setZIndex) {
8219                         this._lastZIndex++;
8220                         layer.setZIndex(this._lastZIndex);
8221                 }
8222         },
8223
8224         _update: function () {
8225                 if (!this._container) {
8226                         return;
8227                 }
8228
8229                 this._baseLayersList.innerHTML = '';
8230                 this._overlaysList.innerHTML = '';
8231
8232                 var baseLayersPresent = false,
8233                     overlaysPresent = false,
8234                     i, obj;
8235
8236                 for (i in this._layers) {
8237                         obj = this._layers[i];
8238                         this._addItem(obj);
8239                         overlaysPresent = overlaysPresent || obj.overlay;
8240                         baseLayersPresent = baseLayersPresent || !obj.overlay;
8241                 }
8242
8243                 this._separator.style.display = overlaysPresent && baseLayersPresent ? '' : 'none';
8244         },
8245
8246         _onLayerChange: function (e) {
8247                 var obj = this._layers[L.stamp(e.layer)];
8248
8249                 if (!obj) { return; }
8250
8251                 if (!this._handlingClick) {
8252                         this._update();
8253                 }
8254
8255                 var type = obj.overlay ?
8256                         (e.type === 'layeradd' ? 'overlayadd' : 'overlayremove') :
8257                         (e.type === 'layeradd' ? 'baselayerchange' : null);
8258
8259                 if (type) {
8260                         this._map.fire(type, obj);
8261                 }
8262         },
8263
8264         // IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
8265         _createRadioElement: function (name, checked) {
8266
8267                 var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name + '"';
8268                 if (checked) {
8269                         radioHtml += ' checked="checked"';
8270                 }
8271                 radioHtml += '/>';
8272
8273                 var radioFragment = document.createElement('div');
8274                 radioFragment.innerHTML = radioHtml;
8275
8276                 return radioFragment.firstChild;
8277         },
8278
8279         _addItem: function (obj) {
8280                 var label = document.createElement('label'),
8281                     input,
8282                     checked = this._map.hasLayer(obj.layer);
8283
8284                 if (obj.overlay) {
8285                         input = document.createElement('input');
8286                         input.type = 'checkbox';
8287                         input.className = 'leaflet-control-layers-selector';
8288                         input.defaultChecked = checked;
8289                 } else {
8290                         input = this._createRadioElement('leaflet-base-layers', checked);
8291                 }
8292
8293                 input.layerId = L.stamp(obj.layer);
8294
8295                 L.DomEvent.on(input, 'click', this._onInputClick, this);
8296
8297                 var name = document.createElement('span');
8298                 name.innerHTML = ' ' + obj.name;
8299
8300                 label.appendChild(input);
8301                 label.appendChild(name);
8302
8303                 var container = obj.overlay ? this._overlaysList : this._baseLayersList;
8304                 container.appendChild(label);
8305
8306                 return label;
8307         },
8308
8309         _onInputClick: function () {
8310                 var i, input, obj,
8311                     inputs = this._form.getElementsByTagName('input'),
8312                     inputsLen = inputs.length;
8313
8314                 this._handlingClick = true;
8315
8316                 for (i = 0; i < inputsLen; i++) {
8317                         input = inputs[i];
8318                         obj = this._layers[input.layerId];
8319
8320                         if (input.checked && !this._map.hasLayer(obj.layer)) {
8321                                 this._map.addLayer(obj.layer);
8322
8323                         } else if (!input.checked && this._map.hasLayer(obj.layer)) {
8324                                 this._map.removeLayer(obj.layer);
8325                         }
8326                 }
8327
8328                 this._handlingClick = false;
8329         },
8330
8331         _expand: function () {
8332                 L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
8333         },
8334
8335         _collapse: function () {
8336                 this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', '');
8337         }
8338 });
8339
8340 L.control.layers = function (baseLayers, overlays, options) {
8341         return new L.Control.Layers(baseLayers, overlays, options);
8342 };
8343
8344
8345 /*
8346  * L.PosAnimation is used by Leaflet internally for pan animations.
8347  */
8348
8349 L.PosAnimation = L.Class.extend({
8350         includes: L.Mixin.Events,
8351
8352         run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
8353                 this.stop();
8354
8355                 this._el = el;
8356                 this._inProgress = true;
8357                 this._newPos = newPos;
8358
8359                 this.fire('start');
8360
8361                 el.style[L.DomUtil.TRANSITION] = 'all ' + (duration || 0.25) +
8362                         's cubic-bezier(0,0,' + (easeLinearity || 0.5) + ',1)';
8363
8364                 L.DomEvent.on(el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
8365                 L.DomUtil.setPosition(el, newPos);
8366
8367                 // toggle reflow, Chrome flickers for some reason if you don't do this
8368                 L.Util.falseFn(el.offsetWidth);
8369
8370                 // there's no native way to track value updates of transitioned properties, so we imitate this
8371                 this._stepTimer = setInterval(L.bind(this._onStep, this), 50);
8372         },
8373
8374         stop: function () {
8375                 if (!this._inProgress) { return; }
8376
8377                 // if we just removed the transition property, the element would jump to its final position,
8378                 // so we need to make it stay at the current position
8379
8380                 L.DomUtil.setPosition(this._el, this._getPos());
8381                 this._onTransitionEnd();
8382                 L.Util.falseFn(this._el.offsetWidth); // force reflow in case we are about to start a new animation
8383         },
8384
8385         _onStep: function () {
8386                 var stepPos = this._getPos();
8387                 if (!stepPos) {
8388                         this._onTransitionEnd();
8389                         return;
8390                 }
8391                 // jshint camelcase: false
8392                 // make L.DomUtil.getPosition return intermediate position value during animation
8393                 this._el._leaflet_pos = stepPos;
8394
8395                 this.fire('step');
8396         },
8397
8398         // you can't easily get intermediate values of properties animated with CSS3 Transitions,
8399         // we need to parse computed style (in case of transform it returns matrix string)
8400
8401         _transformRe: /([-+]?(?:\d*\.)?\d+)\D*, ([-+]?(?:\d*\.)?\d+)\D*\)/,
8402
8403         _getPos: function () {
8404                 var left, top, matches,
8405                     el = this._el,
8406                     style = window.getComputedStyle(el);
8407
8408                 if (L.Browser.any3d) {
8409                         matches = style[L.DomUtil.TRANSFORM].match(this._transformRe);
8410                         if (!matches) { return; }
8411                         left = parseFloat(matches[1]);
8412                         top  = parseFloat(matches[2]);
8413                 } else {
8414                         left = parseFloat(style.left);
8415                         top  = parseFloat(style.top);
8416                 }
8417
8418                 return new L.Point(left, top, true);
8419         },
8420
8421         _onTransitionEnd: function () {
8422                 L.DomEvent.off(this._el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
8423
8424                 if (!this._inProgress) { return; }
8425                 this._inProgress = false;
8426
8427                 this._el.style[L.DomUtil.TRANSITION] = '';
8428
8429                 // jshint camelcase: false
8430                 // make sure L.DomUtil.getPosition returns the final position value after animation
8431                 this._el._leaflet_pos = this._newPos;
8432
8433                 clearInterval(this._stepTimer);
8434
8435                 this.fire('step').fire('end');
8436         }
8437
8438 });
8439
8440
8441 /*
8442  * Extends L.Map to handle panning animations.
8443  */
8444
8445 L.Map.include({
8446
8447         setView: function (center, zoom, options) {
8448
8449                 zoom = this._limitZoom(zoom);
8450                 center = L.latLng(center);
8451                 options = options || {};
8452
8453                 if (this._panAnim) {
8454                         this._panAnim.stop();
8455                 }
8456
8457                 if (this._loaded && !options.reset && options !== true) {
8458
8459                         if (options.animate !== undefined) {
8460                                 options.zoom = L.extend({animate: options.animate}, options.zoom);
8461                                 options.pan = L.extend({animate: options.animate}, options.pan);
8462                         }
8463
8464                         // try animating pan or zoom
8465                         var animated = (this._zoom !== zoom) ?
8466                                 this._tryAnimatedZoom && this._tryAnimatedZoom(center, zoom, options.zoom) :
8467                                 this._tryAnimatedPan(center, options.pan);
8468
8469                         if (animated) {
8470                                 // prevent resize handler call, the view will refresh after animation anyway
8471                                 clearTimeout(this._sizeTimer);
8472                                 return this;
8473                         }
8474                 }
8475
8476                 // animation didn't start, just reset the map view
8477                 this._resetView(center, zoom);
8478
8479                 return this;
8480         },
8481
8482         panBy: function (offset, options) {
8483                 offset = L.point(offset).round();
8484                 options = options || {};
8485
8486                 if (!offset.x && !offset.y) {
8487                         return this;
8488                 }
8489
8490                 if (!this._panAnim) {
8491                         this._panAnim = new L.PosAnimation();
8492
8493                         this._panAnim.on({
8494                                 'step': this._onPanTransitionStep,
8495                                 'end': this._onPanTransitionEnd
8496                         }, this);
8497                 }
8498
8499                 // don't fire movestart if animating inertia
8500                 if (!options.noMoveStart) {
8501                         this.fire('movestart');
8502                 }
8503
8504                 // animate pan unless animate: false specified
8505                 if (options.animate !== false) {
8506                         L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
8507
8508                         var newPos = this._getMapPanePos().subtract(offset);
8509                         this._panAnim.run(this._mapPane, newPos, options.duration || 0.25, options.easeLinearity);
8510                 } else {
8511                         this._rawPanBy(offset);
8512                         this.fire('move').fire('moveend');
8513                 }
8514
8515                 return this;
8516         },
8517
8518         _onPanTransitionStep: function () {
8519                 this.fire('move');
8520         },
8521
8522         _onPanTransitionEnd: function () {
8523                 L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
8524                 this.fire('moveend');
8525         },
8526
8527         _tryAnimatedPan: function (center, options) {
8528                 // difference between the new and current centers in pixels
8529                 var offset = this._getCenterOffset(center)._floor();
8530
8531                 // don't animate too far unless animate: true specified in options
8532                 if ((options && options.animate) !== true && !this.getSize().contains(offset)) { return false; }
8533
8534                 this.panBy(offset, options);
8535
8536                 return true;
8537         }
8538 });
8539
8540
8541 /*
8542  * L.PosAnimation fallback implementation that powers Leaflet pan animations
8543  * in browsers that don't support CSS3 Transitions.
8544  */
8545
8546 L.PosAnimation = L.DomUtil.TRANSITION ? L.PosAnimation : L.PosAnimation.extend({
8547
8548         run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
8549                 this.stop();
8550
8551                 this._el = el;
8552                 this._inProgress = true;
8553                 this._duration = duration || 0.25;
8554                 this._easeOutPower = 1 / Math.max(easeLinearity || 0.5, 0.2);
8555
8556                 this._startPos = L.DomUtil.getPosition(el);
8557                 this._offset = newPos.subtract(this._startPos);
8558                 this._startTime = +new Date();
8559
8560                 this.fire('start');
8561
8562                 this._animate();
8563         },
8564
8565         stop: function () {
8566                 if (!this._inProgress) { return; }
8567
8568                 this._step();
8569                 this._complete();
8570         },
8571
8572         _animate: function () {
8573                 // animation loop
8574                 this._animId = L.Util.requestAnimFrame(this._animate, this);
8575                 this._step();
8576         },
8577
8578         _step: function () {
8579                 var elapsed = (+new Date()) - this._startTime,
8580                     duration = this._duration * 1000;
8581
8582                 if (elapsed < duration) {
8583                         this._runFrame(this._easeOut(elapsed / duration));
8584                 } else {
8585                         this._runFrame(1);
8586                         this._complete();
8587                 }
8588         },
8589
8590         _runFrame: function (progress) {
8591                 var pos = this._startPos.add(this._offset.multiplyBy(progress));
8592                 L.DomUtil.setPosition(this._el, pos);
8593
8594                 this.fire('step');
8595         },
8596
8597         _complete: function () {
8598                 L.Util.cancelAnimFrame(this._animId);
8599
8600                 this._inProgress = false;
8601                 this.fire('end');
8602         },
8603
8604         _easeOut: function (t) {
8605                 return 1 - Math.pow(1 - t, this._easeOutPower);
8606         }
8607 });
8608
8609
8610 /*
8611  * Extends L.Map to handle zoom animations.
8612  */
8613
8614 L.Map.mergeOptions({
8615         zoomAnimation: true,
8616         zoomAnimationThreshold: 4
8617 });
8618
8619 if (L.DomUtil.TRANSITION) {
8620
8621         L.Map.addInitHook(function () {
8622                 // don't animate on browsers without hardware-accelerated transitions or old Android/Opera
8623                 this._zoomAnimated = this.options.zoomAnimation && L.DomUtil.TRANSITION &&
8624                                 L.Browser.any3d && !L.Browser.android23 && !L.Browser.mobileOpera;
8625
8626                 // zoom transitions run with the same duration for all layers, so if one of transitionend events
8627                 // happens after starting zoom animation (propagating to the map pane), we know that it ended globally
8628                 if (this._zoomAnimated) {
8629                         L.DomEvent.on(this._mapPane, L.DomUtil.TRANSITION_END, this._catchTransitionEnd, this);
8630                 }
8631         });
8632 }
8633
8634 L.Map.include(!L.DomUtil.TRANSITION ? {} : {
8635
8636         _catchTransitionEnd: function () {
8637                 if (this._animatingZoom) {
8638                         this._onZoomTransitionEnd();
8639                 }
8640         },
8641
8642         _nothingToAnimate: function () {
8643                 return !this._container.getElementsByClassName('leaflet-zoom-animated').length;
8644         },
8645
8646         _tryAnimatedZoom: function (center, zoom, options) {
8647
8648                 if (this._animatingZoom) { return true; }
8649
8650                 options = options || {};
8651
8652                 // don't animate if disabled, not supported or zoom difference is too large
8653                 if (!this._zoomAnimated || options.animate === false || this._nothingToAnimate() ||
8654                         Math.abs(zoom - this._zoom) > this.options.zoomAnimationThreshold) { return false; }
8655
8656                 // offset is the pixel coords of the zoom origin relative to the current center
8657                 var scale = this.getZoomScale(zoom),
8658                     offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale),
8659                         origin = this._getCenterLayerPoint()._add(offset);
8660
8661                 // don't animate if the zoom origin isn't within one screen from the current center, unless forced
8662                 if (options.animate !== true && !this.getSize().contains(offset)) { return false; }
8663
8664                 this
8665                     .fire('movestart')
8666                     .fire('zoomstart');
8667
8668                 this._animateZoom(center, zoom, origin, scale, null, true);
8669
8670                 return true;
8671         },
8672
8673         _animateZoom: function (center, zoom, origin, scale, delta, backwards) {
8674
8675                 this._animatingZoom = true;
8676
8677                 // put transform transition on all layers with leaflet-zoom-animated class
8678                 L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
8679
8680                 // remember what center/zoom to set after animation
8681                 this._animateToCenter = center;
8682                 this._animateToZoom = zoom;
8683
8684                 // disable any dragging during animation
8685                 if (L.Draggable) {
8686                         L.Draggable._disabled = true;
8687                 }
8688
8689                 this.fire('zoomanim', {
8690                         center: center,
8691                         zoom: zoom,
8692                         origin: origin,
8693                         scale: scale,
8694                         delta: delta,
8695                         backwards: backwards
8696                 });
8697         },
8698
8699         _onZoomTransitionEnd: function () {
8700
8701                 this._animatingZoom = false;
8702
8703                 L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
8704
8705                 this._resetView(this._animateToCenter, this._animateToZoom, true, true);
8706
8707                 if (L.Draggable) {
8708                         L.Draggable._disabled = false;
8709                 }
8710         }
8711 });
8712
8713
8714 /*
8715         Zoom animation logic for L.TileLayer.
8716 */
8717
8718 L.TileLayer.include({
8719         _animateZoom: function (e) {
8720                 if (!this._animating) {
8721                         this._animating = true;
8722                         this._prepareBgBuffer();
8723                 }
8724
8725                 var bg = this._bgBuffer,
8726                     transform = L.DomUtil.TRANSFORM,
8727                     initialTransform = e.delta ? L.DomUtil.getTranslateString(e.delta) : bg.style[transform],
8728                     scaleStr = L.DomUtil.getScaleString(e.scale, e.origin);
8729
8730                 bg.style[transform] = e.backwards ?
8731                                 scaleStr + ' ' + initialTransform :
8732                                 initialTransform + ' ' + scaleStr;
8733         },
8734
8735         _endZoomAnim: function () {
8736                 var front = this._tileContainer,
8737                     bg = this._bgBuffer;
8738
8739                 front.style.visibility = '';
8740                 front.parentNode.appendChild(front); // Bring to fore
8741
8742                 // force reflow
8743                 L.Util.falseFn(bg.offsetWidth);
8744
8745                 this._animating = false;
8746         },
8747
8748         _clearBgBuffer: function () {
8749                 var map = this._map;
8750
8751                 if (map && !map._animatingZoom && !map.touchZoom._zooming) {
8752                         this._bgBuffer.innerHTML = '';
8753                         this._bgBuffer.style[L.DomUtil.TRANSFORM] = '';
8754                 }
8755         },
8756
8757         _prepareBgBuffer: function () {
8758
8759                 var front = this._tileContainer,
8760                     bg = this._bgBuffer;
8761
8762                 // if foreground layer doesn't have many tiles but bg layer does,
8763                 // keep the existing bg layer and just zoom it some more
8764
8765                 var bgLoaded = this._getLoadedTilesPercentage(bg),
8766                     frontLoaded = this._getLoadedTilesPercentage(front);
8767
8768                 if (bg && bgLoaded > 0.5 && frontLoaded < 0.5) {
8769
8770                         front.style.visibility = 'hidden';
8771                         this._stopLoadingImages(front);
8772                         return;
8773                 }
8774
8775                 // prepare the buffer to become the front tile pane
8776                 bg.style.visibility = 'hidden';
8777                 bg.style[L.DomUtil.TRANSFORM] = '';
8778
8779                 // switch out the current layer to be the new bg layer (and vice-versa)
8780                 this._tileContainer = bg;
8781                 bg = this._bgBuffer = front;
8782
8783                 this._stopLoadingImages(bg);
8784
8785                 //prevent bg buffer from clearing right after zoom
8786                 clearTimeout(this._clearBgBufferTimer);
8787         },
8788
8789         _getLoadedTilesPercentage: function (container) {
8790                 var tiles = container.getElementsByTagName('img'),
8791                     i, len, count = 0;
8792
8793                 for (i = 0, len = tiles.length; i < len; i++) {
8794                         if (tiles[i].complete) {
8795                                 count++;
8796                         }
8797                 }
8798                 return count / len;
8799         },
8800
8801         // stops loading all tiles in the background layer
8802         _stopLoadingImages: function (container) {
8803                 var tiles = Array.prototype.slice.call(container.getElementsByTagName('img')),
8804                     i, len, tile;
8805
8806                 for (i = 0, len = tiles.length; i < len; i++) {
8807                         tile = tiles[i];
8808
8809                         if (!tile.complete) {
8810                                 tile.onload = L.Util.falseFn;
8811                                 tile.onerror = L.Util.falseFn;
8812                                 tile.src = L.Util.emptyImageUrl;
8813
8814                                 tile.parentNode.removeChild(tile);
8815                         }
8816                 }
8817         }
8818 });
8819
8820
8821 /*
8822  * Provides L.Map with convenient shortcuts for using browser geolocation features.
8823  */
8824
8825 L.Map.include({
8826         _defaultLocateOptions: {
8827                 watch: false,
8828                 setView: false,
8829                 maxZoom: Infinity,
8830                 timeout: 10000,
8831                 maximumAge: 0,
8832                 enableHighAccuracy: false
8833         },
8834
8835         locate: function (/*Object*/ options) {
8836
8837                 options = this._locateOptions = L.extend(this._defaultLocateOptions, options);
8838
8839                 if (!navigator.geolocation) {
8840                         this._handleGeolocationError({
8841                                 code: 0,
8842                                 message: 'Geolocation not supported.'
8843                         });
8844                         return this;
8845                 }
8846
8847                 var onResponse = L.bind(this._handleGeolocationResponse, this),
8848                         onError = L.bind(this._handleGeolocationError, this);
8849
8850                 if (options.watch) {
8851                         this._locationWatchId =
8852                                 navigator.geolocation.watchPosition(onResponse, onError, options);
8853                 } else {
8854                         navigator.geolocation.getCurrentPosition(onResponse, onError, options);
8855                 }
8856                 return this;
8857         },
8858
8859         stopLocate: function () {
8860                 if (navigator.geolocation) {
8861                         navigator.geolocation.clearWatch(this._locationWatchId);
8862                 }
8863                 if (this._locateOptions) {
8864                         this._locateOptions.setView = false;
8865                 }
8866                 return this;
8867         },
8868
8869         _handleGeolocationError: function (error) {
8870                 var c = error.code,
8871                     message = error.message ||
8872                             (c === 1 ? 'permission denied' :
8873                             (c === 2 ? 'position unavailable' : 'timeout'));
8874
8875                 if (this._locateOptions.setView && !this._loaded) {
8876                         this.fitWorld();
8877                 }
8878
8879                 this.fire('locationerror', {
8880                         code: c,
8881                         message: 'Geolocation error: ' + message + '.'
8882                 });
8883         },
8884
8885         _handleGeolocationResponse: function (pos) {
8886                 var lat = pos.coords.latitude,
8887                     lng = pos.coords.longitude,
8888                     latlng = new L.LatLng(lat, lng),
8889
8890                     latAccuracy = 180 * pos.coords.accuracy / 40075017,
8891                     lngAccuracy = latAccuracy / Math.cos(L.LatLng.DEG_TO_RAD * lat),
8892
8893                     bounds = L.latLngBounds(
8894                             [lat - latAccuracy, lng - lngAccuracy],
8895                             [lat + latAccuracy, lng + lngAccuracy]),
8896
8897                     options = this._locateOptions;
8898
8899                 if (options.setView) {
8900                         var zoom = Math.min(this.getBoundsZoom(bounds), options.maxZoom);
8901                         this.setView(latlng, zoom);
8902                 }
8903
8904                 var data = {
8905                         latlng: latlng,
8906                         bounds: bounds
8907                 };
8908
8909                 for (var i in pos.coords) {
8910                         if (typeof pos.coords[i] === 'number') {
8911                                 data[i] = pos.coords[i];
8912                         }
8913                 }
8914
8915                 this.fire('locationfound', data);
8916         }
8917 });
8918
8919
8920 }(window, document));