5364ce73e5
git-svn-id: http://svn.openlayers.org/trunk/openlayers@1634 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
104 lines
3.0 KiB
JavaScript
104 lines
3.0 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) {
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this.base = base;
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}
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},
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/** Set the map property for the control.
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*
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* @param {OpenLayers.Map} map
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*/
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setMap: function(map) {
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OpenLayers.Control.prototype.setMap.apply(this, arguments);
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//make sure we have an arg parser attached
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for(var i=0; i< this.map.controls.length; i++) {
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var control = this.map.controls[i];
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if (control.CLASS_NAME == "OpenLayers.Control.ArgParser") {
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break;
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}
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}
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if (i == this.map.controls.length) {
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this.map.addControl(new OpenLayers.Control.ArgParser());
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}
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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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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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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.isBaseLayer) {
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layers += (layer == this.map.baseLayer) ? "B" : "0";
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} else {
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layers += (layer.getVisibility()) ? "T" : "F";
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}
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}
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var href = this.base + "?" + lat + "&" + lon + "&" + zoom +
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"&" + layers;
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this.element.href = href;
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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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