+++ /dev/null
-/*
- * Called as the user scrolls/zooms around to aniplate hrefs of the
- * view tab and various other links
- */
-function updatelinks(lon,lat,zoom,layers,minlon,minlat,maxlon,maxlat, obj_type, obj_id) {
- var decimals = Math.pow(10, Math.floor(zoom/3));
- var node;
-
- lat = Math.round(lat * decimals) / decimals;
- lon = Math.round(lon * decimals) / decimals;
-
- node = document.getElementById("permalinkanchor");
- if (node) {
- var args = getArgs(node.href);
- args["lat"] = lat;
- args["lon"] = lon;
- args["zoom"] = zoom;
- if (layers) {
- args["layers"] = layers;
- }
- if (obj_type && obj_id) {
- args[obj_type] = obj_id;
- }
- node.href = setArgs(node.href, args);
- }
-
- node = document.getElementById("viewanchor");
- if (node) {
- var args = getArgs(node.href);
- args["lat"] = lat;
- args["lon"] = lon;
- args["zoom"] = zoom;
- if (layers) {
- args["layers"] = layers;
- }
- node.href = setArgs(node.href, args);
- }
-
- node = document.getElementById("exportanchor");
- if (node) {
- var args = getArgs(node.href);
- args["lat"] = lat;
- args["lon"] = lon;
- args["zoom"] = zoom;
- if (layers) {
- args["layers"] = layers;
- }
- node.href = setArgs(node.href, args);
- }
-
- node = document.getElementById("editanchor");
- if (node) {
- if (zoom >= 13) {
- var args = new Object();
- args.lat = lat;
- args.lon = lon;
- args.zoom = zoom;
- node.href = setArgs("/edit", args);
- node.style.fontStyle = 'normal';
- } else {
- node.href = 'javascript:alert("zoom in to edit map");';
- node.style.fontStyle = 'italic';
- }
- }
-
- node = document.getElementById("historyanchor");
- if (node) {
- if (zoom >= 11) {
- var args = new Object();
- //set bbox param from 'extents' object
- if (typeof minlon == "number" &&
- typeof minlat == "number" &&
- typeof maxlon == "number" &&
- typeof maxlat == "number") {
-
- minlon = Math.round(minlon * decimals) / decimals;
- minlat = Math.round(minlat * decimals) / decimals;
- maxlon = Math.round(maxlon * decimals) / decimals;
- maxlat = Math.round(maxlat * decimals) / decimals;
- args.bbox = minlon + "," + minlat + "," + maxlon + "," + maxlat;
- }
-
- node.href = setArgs("/history", args);
- node.style.fontStyle = 'normal';
- } else {
- node.href = 'javascript:alert("zoom in to see editing history");';
- node.style.fontStyle = 'italic';
- }
- }
-
- node = document.getElementById("shortlinkanchor");
- if (node) {
- var args = getArgs(node.href);
- var code = makeShortCode(lat, lon, zoom);
- var prefix = shortlinkPrefix();
-
- // little hack. may the gods of hardcoding please forgive me, or
- // show me the Right way to do it.
- if (layers && (layers != "B000FTF")) {
- args["layers"] = layers;
- node.href = setArgs(prefix + "/go/" + code, args);
- } else {
- node.href = prefix + "/go/" + code;
- }
- }
-}
-
-
-/*
- * This is a hack to hardcode opestreetmap.org -> osm.org in the
- * shortlink
- */
-function shortlinkPrefix() {
- var hostname = window.location.hostname;
- var normalized_hostname = hostname.replace(/^:www\./i,'');
- var prefix = '';
-
- if (normalized_hostname.match(/^openstreetmap\.org$/i)) {
- prefix = "http://osm.org";
- }
-
- return prefix;
-}
-
-function getArgs(url) {
- var args = new Object();
- var querystart = url.indexOf("?");
-
- if (querystart >= 0) {
- var querystring = url.substring(querystart + 1);
- var queryitems = querystring.split("&");
-
- for (var i = 0; i < queryitems.length; i++) {
- if (match = queryitems[i].match(/^(.*)=(.*)$/)) {
- args[unescape(match[1])] = unescape(match[2]);
- } else {
- args[unescape(queryitems[i])] = null
- }
- }
- }
-
- return args;
-}
-
-/*
- * Called to set the arguments on a URL from the given hash.
- */
-function setArgs(url, args) {
- var queryitems = new Array();
-
- for (arg in args)
- {
- if (args[arg] == null) {
- queryitems.push(escape(arg));
- } else {
- queryitems.push(escape(arg) + "=" + escape(args[arg]));
- }
- }
-
- return url.replace(/\?.*$/, "") + "?" + queryitems.join("&");
-}
-
-/*
- * Called to get the arguments from a URL as a hash.
- */
-function getStyle(el, property) {
- var style;
-
- if (el.currentStyle) {
- style = el.currentStyle[property];
- } else if( window.getComputedStyle ) {
- style = document.defaultView.getComputedStyle(el,null).getPropertyValue(property);
- } else {
- style = el.style[property];
- }
-
- return style;
-}
-
-/*
- * Called to interpolate JavaScript variables in strings using a
- * similar syntax to rails I18n string interpolation - the only
- * difference is that [[foo]] is the placeholder syntax instead
- * of {{foo}} which allows the same string to be processed by both
- * rails and then later by javascript.
- */
-function i18n(string, keys) {
- for (var key in keys) {
- var re_key = '\\[\\[' + key + '\\]\\]';
- var re = new RegExp(re_key, "g");
-
- string = string.replace(re, keys[key]);
- }
-
- return string;
-}
-
-function makeShortCode(lat, lon, zoom) {
- char_array = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_@";
- var x = Math.round((lon + 180.0) * ((1 << 30) / 90.0));
- var y = Math.round((lat + 90.0) * ((1 << 30) / 45.0));
- // hack around the fact that JS apparently only allows 53-bit integers?!?
- // note that, although this reduces the accuracy of the process, it's fine for
- // z18 so we don't need to care for now.
- var c1 = 0, c2 = 0;
- for (var i = 31; i > 16; --i) {
- c1 = (c1 << 1) | ((x >> i) & 1);
- c1 = (c1 << 1) | ((y >> i) & 1);
- }
- for (var i = 16; i > 1; --i) {
- c2 = (c2 << 1) | ((x >> i) & 1);
- c2 = (c2 << 1) | ((y >> i) & 1);
- }
- var str = "";
- for (var i = 0; i < Math.ceil((zoom + 8) / 3.0) && i < 5; ++i) {
- digit = (c1 >> (24 - 6 * i)) & 0x3f;
- str += char_array.charAt(digit);
- }
- for (var i = 5; i < Math.ceil((zoom + 8) / 3.0); ++i) {
- digit = (c2 >> (24 - 6 * (i - 5))) & 0x3f;
- str += char_array.charAt(digit);
- }
- for (var i = 0; i < ((zoom + 8) % 3); ++i) {
- str += "=";
- }
- return str;
-}
projects / rails.git / blobdiff