net/systemeD/halcyon/connection/Connection.as

   1 package net.systemeD.halcyon.connection {
   2
   3     import flash.net.*;
   4
   5     import flash.events.EventDispatcher;
   6     import flash.events.Event;
   7         import net.systemeD.halcyon.Globals;
   8         import net.systemeD.halcyon.connection.actions.*;
   9     import org.iotashan.oauth.*;
  10
  11         public class Connection extends EventDispatcher {
  12
  13         private static var connectionInstance:Connection = null;
  14
  15         protected static var policyURL:String;
  16         protected static var apiBaseURL:String;
  17         protected static var params:Object;
  18
  19         public static function getConnection(initparams:Object=null):Connection {
  20             if ( connectionInstance == null ) {
  21
  22                 params = initparams == null ? new Object() : initparams;
  23                 policyURL = getParam("policy", "http://127.0.0.1:3000/api/crossdomain.xml");
  24                 apiBaseURL = getParam("api", "http://127.0.0.1:3000/api/0.6/");
  25                 var connectType:String = getParam("connection", "XML");
  26
  27                 if ( connectType == "XML" )
  28                     connectionInstance = new XMLConnection();
  29                 else if ( connectType == "OSM" )
  30                     connectionInstance = new OSMConnection();
  31                 else
  32                     connectionInstance = new AMFConnection();
  33             }
  34             return connectionInstance;
  35         }
  36
  37         public static function getParam(name:String, defaultValue:String):String {
  38             return params[name] == null ? defaultValue : params[name];
  39         }
  40
  41         public function get apiBase():String {
  42             return apiBaseURL;
  43         }
  44
  45         public static function get serverName():String {
  46             return getParam("serverName", "Localhost");
  47         }
  48
  49                 public static function getConnectionInstance():Connection {
  50             return connectionInstance;
  51                 }
  52
  53                 public function getEnvironment(responder:Responder):void {}
  54
  55         // connection events
  56         public static var LOAD_STARTED:String = "load_started";
  57         public static var LOAD_COMPLETED:String = "load_completed";
  58         public static var SAVE_STARTED:String = "save_started";
  59         public static var SAVE_COMPLETED:String = "save_completed";
  60         public static var DATA_DIRTY:String = "data_dirty";
  61         public static var DATA_CLEAN:String = "data_clean";
  62         public static var NEW_CHANGESET:String = "new_changeset";
  63         public static var NEW_CHANGESET_ERROR:String = "new_changeset_error";
  64         public static var NEW_NODE:String = "new_node";
  65         public static var NEW_WAY:String = "new_way";
  66         public static var NEW_RELATION:String = "new_relation";
  67         public static var NEW_POI:String = "new_poi";
  68         public static var NODE_RENUMBERED:String = "node_renumbered";
  69         public static var WAY_RENUMBERED:String = "way_renumbered";
  70         public static var RELATION_RENUMBERED:String = "relation_renumbered";
  71         public static var TAG_CHANGED:String = "tag_change";
  72         public static var NODE_MOVED:String = "node_moved";
  73         public static var WAY_NODE_ADDED:String = "way_node_added";
  74         public static var WAY_NODE_REMOVED:String = "way_node_removed";
  75         public static var WAY_REORDERED:String = "way_reordered";
  76         public static var WAY_DRAGGED:String = "way_dragged";
  77                 public static var NODE_DELETED:String = "node_deleted";
  78                 public static var WAY_DELETED:String = "way_deleted";
  79                 public static var RELATION_DELETED:String = "relation_deleted";
  80                 public static var RELATION_MEMBER_ADDED:String = "relation_member_added";
  81                 public static var RELATION_MEMBER_REMOVED:String = "relation_member_deleted";
  82                 public static var ADDED_TO_RELATION:String = "added_to_relation";
  83                 public static var REMOVED_FROM_RELATION:String = "removed_from_relation";
  84                 public static var SUSPEND_REDRAW:String = "suspend_redraw";
  85                 public static var RESUME_REDRAW:String = "resume_redraw";
  86         public static var TRACES_LOADED:String = "traces_loaded";
  87
  88         // store the data we download
  89         private var negativeID:Number = -1;
  90         private var nodes:Object = {};
  91         private var ways:Object = {};
  92         private var relations:Object = {};
  93         private var pois:Array = [];
  94         private var changeset:Changeset = null;
  95                 private var changesetUpdated:Number;
  96                 private var modified:Boolean = false;
  97                 public var nodecount:int=0;
  98                 public var waycount:int=0;
  99                 public var relationcount:int=0;
 100         private var traces:Array = [];
 101         protected var traces_loaded:Boolean = false;
 102
 103         protected function get nextNegative():Number {
 104             return negativeID--;
 105         }
 106
 107         protected function setNode(node:Node, queue:Boolean):void {
 108                         if (!nodes[node.id]) { nodecount++; }
 109             nodes[node.id] = node;
 110             if (node.loaded) { sendEvent(new EntityEvent(NEW_NODE, node),queue); }
 111         }
 112
 113         protected function setWay(way:Way, queue:Boolean):void {
 114                         if (!ways[way.id]) { waycount++; }
 115             ways[way.id] = way;
 116             if (way.loaded) { sendEvent(new EntityEvent(NEW_WAY, way),queue); }
 117         }
 118
 119         protected function setRelation(relation:Relation, queue:Boolean):void {
 120                         if (!relations[relation.id]) { relationcount++; }
 121             relations[relation.id] = relation;
 122             if (relation.loaded) { sendEvent(new EntityEvent(NEW_RELATION, relation),queue); }
 123         }
 124
 125         protected function renumberNode(oldID:Number, node:Node, queue:Boolean):void {
 126             nodes[node.id] = node;
 127             if (node.loaded) { sendEvent(new EntityRenumberedEvent(NODE_RENUMBERED, node, oldID),queue); }
 128             delete nodes[oldID];
 129         }
 130
 131         protected function renumberWay(oldID:Number, way:Way, queue:Boolean):void {
 132             ways[way.id] = way;
 133             if (way.loaded) { sendEvent(new EntityRenumberedEvent(WAY_RENUMBERED, way, oldID),queue); }
 134             delete ways[oldID];
 135         }
 136
 137         protected function renumberRelation(oldID:Number, relation:Relation, queue:Boolean):void {
 138             relations[relation.id] = relation;
 139             if (relation.loaded) { sendEvent(new EntityRenumberedEvent(RELATION_RENUMBERED, relation, oldID),queue); }
 140             delete relations[oldID];
 141         }
 142
 143
 144                 public function sendEvent(e:*,queue:Boolean):void {
 145                         // queue is only used for AMFConnection
 146                         dispatchEvent(e);
 147                 }
 148
 149         public function registerPOI(node:Node):void {
 150             if ( pois.indexOf(node) < 0 ) {
 151                 pois.push(node);
 152                 sendEvent(new EntityEvent(NEW_POI, node),false);
 153             }
 154         }
 155
 156         public function unregisterPOI(node:Node):void {
 157             var index:uint = pois.indexOf(node);
 158             if ( index >= 0 ) {
 159                 pois.splice(index,1);
 160             }
 161         }
 162
 163         public function getNode(id:Number):Node {
 164             return nodes[id];
 165         }
 166
 167         public function getWay(id:Number):Way {
 168             return ways[id];
 169         }
 170
 171         public function getRelation(id:Number):Relation {
 172             return relations[id];
 173         }
 174
 175                 // Remove data from Connection
 176                 // These functions are used only internally to stop redundant data hanging around
 177                 // (either because it's been deleted on the server, or because we have panned away
 178                 //  and need to reduce memory usage)
 179
 180                 protected function killNode(id:Number):void {
 181                         if (!nodes[id]) return;
 182             nodes[id].dispatchEvent(new EntityEvent(Connection.NODE_DELETED, nodes[id]));
 183                         if (nodes[id].parentRelations.length>0) {
 184                                 nodes[id]=new Node(id,0,{},false,0,0);
 185                         } else {
 186                                 delete nodes[id];
 187                         }
 188                         nodecount--;
 189                 }
 190
 191                 protected function killWay(id:Number):void {
 192                         if (!ways[id]) return;
 193             ways[id].dispatchEvent(new EntityEvent(Connection.WAY_DELETED, ways[id]));
 194                         if (ways[id].parentRelations.length>0) {
 195                                 ways[id]=new Way(id,0,{},false,[]);
 196                         } else {
 197                                 delete ways[id];
 198                         }
 199                         waycount--;
 200                 }
 201
 202                 protected function killRelation(id:Number):void {
 203                         if (!relations[id]) return;
 204             relations[id].dispatchEvent(new EntityEvent(Connection.RELATION_DELETED, relations[id]));
 205                         if (relations[id].parentRelations.length>0) {
 206                                 relations[id]=new Relation(id,0,{},false,[]);
 207                         } else {
 208                                 delete relations[id];
 209                         }
 210                         relationcount--;
 211                 }
 212
 213                 protected function killWayWithNodes(id:Number):void {
 214                         var way:Way=ways[id];
 215                         var node:Node;
 216                         for (var i:uint=0; i<way.length; i++) {
 217                                 node=way.getNode(i);
 218                                 if (node.isDirty) { continue; }
 219                                 if (node.parentWays.length>1) {
 220                                         node.removeParent(way);
 221                                 } else {
 222                                         killNode(node.id);
 223                                 }
 224                         }
 225                         killWay(id);
 226                 }
 227
 228
 229
 230         public function createNode(tags:Object, lat:Number, lon:Number, performCreate:Function):Node {
 231             var node:Node = new Node(nextNegative, 0, tags, true, lat, lon);
 232             performCreate(new CreateEntityAction(node, setNode));
 233                         //markDirty();
 234             return node;
 235         }
 236
 237         public function createWay(tags:Object, nodes:Array, performCreate:Function):Way {
 238             var way:Way = new Way(nextNegative, 0, tags, true, nodes.concat());
 239             performCreate(new CreateEntityAction(way, setWay));
 240                         //markDirty();
 241             return way;
 242         }
 243
 244         public function createRelation(tags:Object, members:Array, performCreate:Function):Relation {
 245             var relation:Relation = new Relation(nextNegative, 0, tags, true, members.concat());
 246             performCreate(new CreateEntityAction(relation, setRelation));
 247                         //markDirty();
 248             return relation;
 249         }
 250
 251         public function getAllNodeIDs():Array {
 252             var list:Array = [];
 253             for each (var node:Node in nodes)
 254                 list.push(node.id);
 255             return list;
 256         }
 257
 258         public function getAllWayIDs():Array {
 259             var list:Array = [];
 260             for each (var way:Way in ways)
 261                 list.push(way.id);
 262             return list;
 263         }
 264
 265         public function getAllRelationIDs():Array {
 266             var list:Array = [];
 267             for each (var relation:Relation in relations)
 268                 list.push(relation.id);
 269             return list;
 270         }
 271
 272         public function getMatchingRelationIDs(match:Object):Array {
 273             var list:Array = [];
 274                         var ok:Boolean;
 275             for each (var relation:Relation in relations) {
 276                                 ok=true;
 277                                 if (relation.deleted) { ok=false; }
 278                                 for (var k:String in match) {
 279                                         if (!relation.getTagsHash()[k] || relation.getTagsHash()[k]!=match[k]) { ok=false; }
 280                                 }
 281                                 if (ok) { list.push(relation.id); }
 282                         }
 283             return list;
 284         }
 285
 286                 public function getObjectsByBbox(left:Number, right:Number, top:Number, bottom:Number):Object {
 287                         var o:Object = { nodesInside: [], nodesOutside: [], waysInside: [], waysOutside: [] };
 288                         for each (var way:Way in ways) {
 289                                 if (way.within(left,right,top,bottom)) { o.waysInside.push(way); }
 290                                                                   else { o.waysOutside.push(way); }
 291                         }
 292                         for each (var node:Node in nodes) {
 293                                 if (node.within(left,right,top,bottom)) { o.nodesInside.push(node); }
 294                                                                    else { o.nodesOutside.push(node); }
 295                         }
 296                         return o;
 297                 }
 298
 299                 public function purgeOutside(left:Number, right:Number, top:Number, bottom:Number):void {
 300                         return;
 301                         // ** this doesn't work - WayUIs stick around.
 302                         // ** should purge POIs and relations too
 303                         for each (var way:Way in ways) {
 304                                 if (!way.within(left,right,top,bottom) && !way.isDirty) {
 305                                         killWayWithNodes(way.id);
 306                                 }
 307                         }
 308                 }
 309
 310                 public function markDirty():void {
 311             if (!modified) { dispatchEvent(new Event(DATA_DIRTY)); }
 312                         modified=true;
 313                 }
 314                 public function markClean():void {
 315             if (modified) { dispatchEvent(new Event(DATA_CLEAN)); }
 316                         modified=false;
 317                 }
 318                 public function get isDirty():Boolean {
 319                         return modified;
 320                 }
 321
 322                 // Changeset tracking
 323
 324         protected function setActiveChangeset(changeset:Changeset):void {
 325             this.changeset = changeset;
 326                         changesetUpdated = new Date().getTime();
 327             sendEvent(new EntityEvent(NEW_CHANGESET, changeset),false);
 328         }
 329
 330                 protected function freshenActiveChangeset():void {
 331                         changesetUpdated = new Date().getTime();
 332                 }
 333
 334                 protected function closeActiveChangeset():void {
 335                         changeset = null;
 336                 }
 337
 338         public function getActiveChangeset():Changeset {
 339                         if (changeset && (new Date().getTime()) > (changesetUpdated+58*60*1000)) {
 340                                 closeActiveChangeset();
 341                         }
 342             return changeset;
 343         }
 344
 345         protected function addTrace(t:Object):void {
 346             traces.push(t);
 347         }
 348
 349         protected function clearTraces():void {
 350             traces = [];
 351         }
 352
 353         public function getTraces():Array {
 354             return traces;
 355         }
 356
 357         // these are functions that the Connection implementation is expected to
 358         // provide. This class has some generic helpers for the implementation.
 359                 public function loadBbox(left:Number, right:Number,
 360                                                                 top:Number, bottom:Number):void {
 361             }
 362
 363             public function setAppID(id:Object):void {}
 364             public function setAuthToken(id:Object):void {}
 365             public function createChangeset(tags:Object):void {}
 366                 public function closeChangeset():void {}
 367             public function uploadChanges():void {}
 368         public function fetchUserTraces(refresh:Boolean=false):void {}
 369         public function fetchTrace(id:Number, callback:Function):void {}
 370         public function getAccessToken(data:Object):OAuthToken { return null; } //todo make private and remove import org.ioshtan etc
 371     }
 372
 373 }
 374