c1eb0fe24b
git-svn-id: http://svn.openlayers.org/trunk/openlayers@5406 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
140 lines
3.8 KiB
JavaScript
140 lines
3.8 KiB
JavaScript
/* Copyright (c) 2006-2007 MetaCarta, Inc., published under the Clear BSD
|
|
* license. See http://svn.openlayers.org/trunk/openlayers/license.txt for the
|
|
* full text of the license. */
|
|
|
|
|
|
/**
|
|
* @requires OpenLayers/Control.js
|
|
*
|
|
* Class: OpenLayers.Control.Permalink
|
|
*
|
|
* Inherits from:
|
|
* - <OpenLayers.Control>
|
|
*/
|
|
OpenLayers.Control.Permalink = OpenLayers.Class(OpenLayers.Control, {
|
|
|
|
/**
|
|
* Property: element
|
|
* {DOMElement}
|
|
*/
|
|
element: null,
|
|
|
|
/**
|
|
* APIProperty: base
|
|
* {String}
|
|
*/
|
|
base: '',
|
|
|
|
/**
|
|
* Constructor: OpenLayers.Control.Permalink
|
|
*
|
|
* Parameters:
|
|
* element - {DOMElement}
|
|
* base - {String}
|
|
* options - {Object} options to the control.
|
|
*/
|
|
initialize: function(element, base, options) {
|
|
OpenLayers.Control.prototype.initialize.apply(this, [options]);
|
|
this.element = OpenLayers.Util.getElement(element);
|
|
this.base = base || document.location.href;
|
|
},
|
|
|
|
/**
|
|
* APIMethod: destroy
|
|
*/
|
|
destroy: function() {
|
|
if (this.element.parentNode == this.div) {
|
|
this.div.removeChild(this.element);
|
|
}
|
|
this.element = null;
|
|
|
|
this.map.events.unregister('moveend', this, this.updateLink);
|
|
|
|
OpenLayers.Control.prototype.destroy.apply(this, arguments);
|
|
},
|
|
|
|
/**
|
|
* Method: setMap
|
|
* Set the map property for the control.
|
|
*
|
|
* Parameters:
|
|
* map - {<OpenLayers.Map>}
|
|
*/
|
|
setMap: function(map) {
|
|
OpenLayers.Control.prototype.setMap.apply(this, arguments);
|
|
|
|
//make sure we have an arg parser attached
|
|
for(var i=0; i< this.map.controls.length; i++) {
|
|
var control = this.map.controls[i];
|
|
if (control.CLASS_NAME == "OpenLayers.Control.ArgParser") {
|
|
break;
|
|
}
|
|
}
|
|
if (i == this.map.controls.length) {
|
|
this.map.addControl(new OpenLayers.Control.ArgParser());
|
|
}
|
|
|
|
},
|
|
|
|
/**
|
|
* Method: draw
|
|
*
|
|
* Returns:
|
|
* {DOMElement}
|
|
*/
|
|
draw: function() {
|
|
OpenLayers.Control.prototype.draw.apply(this, arguments);
|
|
|
|
if (!this.element) {
|
|
this.div.className = this.displayClass;
|
|
this.element = document.createElement("a");
|
|
this.element.innerHTML = "Permalink";
|
|
this.element.href="";
|
|
this.div.appendChild(this.element);
|
|
}
|
|
this.map.events.register('moveend', this, this.updateLink);
|
|
this.map.events.register('changelayer', this, this.updateLink);
|
|
this.map.events.register('changebaselayer', this, this.updateLink);
|
|
return this.div;
|
|
},
|
|
|
|
/**
|
|
* Method: updateLink
|
|
*/
|
|
updateLink: function() {
|
|
var center = this.map.getCenter();
|
|
|
|
// Map not initialized yet. Break out of this function.
|
|
if (!center) {
|
|
return;
|
|
}
|
|
|
|
var params = OpenLayers.Util.getParameters(this.base);
|
|
|
|
params.zoom = this.map.getZoom();
|
|
params.lat = Math.round(center.lat*100000)/100000;
|
|
params.lon = Math.round(center.lon*100000)/100000;
|
|
|
|
params.layers = '';
|
|
for(var i=0; i< this.map.layers.length; i++) {
|
|
var layer = this.map.layers[i];
|
|
|
|
if (layer.isBaseLayer) {
|
|
params.layers += (layer == this.map.baseLayer) ? "B" : "0";
|
|
} else {
|
|
params.layers += (layer.getVisibility()) ? "T" : "F";
|
|
}
|
|
}
|
|
|
|
var href = this.base;
|
|
if( href.indexOf('?') != -1 ){
|
|
href = href.substring( 0, href.indexOf('?') );
|
|
}
|
|
|
|
href += '?' + OpenLayers.Util.getParameterString(params);
|
|
this.element.href = href;
|
|
},
|
|
|
|
CLASS_NAME: "OpenLayers.Control.Permalink"
|
|
});
|