efa9499d57
git-svn-id: http://svn.openlayers.org/trunk/openlayers@1589 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
113 lines
3.4 KiB
JavaScript
113 lines
3.4 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
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* text of the license. */
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/**
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* @class
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*
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* @requires OpenLayers/Control.js
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*/
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OpenLayers.Control.Permalink = OpenLayers.Class.create();
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OpenLayers.Control.Permalink.prototype =
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OpenLayers.Util.extend( new OpenLayers.Control(), {
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/** @type DOMElement */
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element: null,
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/** @type String */
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base: '',
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/**
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* @constructor
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*
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* @param {DOMElement} element
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* @param {String} base
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*/
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initialize: function(element, base) {
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OpenLayers.Control.prototype.initialize.apply(this, arguments);
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this.element = element;
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if (base) this.base = base;
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},
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/**
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* @type DOMElement
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*/
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draw: function() {
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OpenLayers.Control.prototype.draw.apply(this, arguments);
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var args = OpenLayers.Util.getArgs();
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if (args.lat && args.lon) {
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if (this.map.baseLayer) {
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this.map.setCenter(
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new OpenLayers.LonLat(parseFloat(args.lon), parseFloat(args.lat))
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);
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} else {
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this.centerData = new OpenLayers.LonLat(
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parseFloat(args.lon),
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parseFloat(args.lat));
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this.map.events.register( 'changebaselayer', this, this.setCenter);
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}
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}
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if (args.zoom) {
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if (this.map.baseLayer) {
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this.map.zoomTo(parseInt(args.zoom));
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} else {
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this.zoomData = parseInt(args.zoom);
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}
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}
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if (!this.element) {
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this.element = document.createElement("a");
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this.div.style.right = "3px";
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this.div.style.bottom = "3px";
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this.div.style.left = "";
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this.div.style.top = "";
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this.div.style.display = "block";
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this.div.style.position = "absolute";
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this.element.style.fontSize="smaller";
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this.element.innerHTML = "Permalink";
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this.element.href="";
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this.div.appendChild(this.element);
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}
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this.map.events.register( 'moveend', this, this.updateLink);
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return this.div;
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},
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/**
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*
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*/
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updateLink: function() {
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var center = this.map.getCenter();
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var zoom = "zoom=" + this.map.getZoom();
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var lat = "lat=" + Math.round(center.lat*100000)/100000;
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var lon = "lon=" + Math.round(center.lon*100000)/100000;
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var layers = "layers=";
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var first = true;
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for(var i=0; i< this.map.layers.length; i++) {
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var layer = this.map.layers[i];
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if (layer.getVisibility()) {
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if (!first) {
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layers += ",";
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}
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layers += i;
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first = false;
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}
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}
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var href = this.base + "?" + lat + "&" + lon + "&" +
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zoom + "&" + layers;
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this.element.href = href;
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},
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setCenter: function() {
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if (this.map.baseLayer && this.centerData) {
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this.map.setCenter(this.centerData, this.zoomData ? this.zoomData : null);
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this.centerData = null;
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}
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Control.Permalink"
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});
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