419abc8b4a
git-svn-id: http://svn.openlayers.org/tags/openlayers/release-2.4@3198 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
115 lines
3.5 KiB
JavaScript
115 lines
3.5 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/release-license.txt
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* for the full 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.ArgParser = OpenLayers.Class.create();
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OpenLayers.Control.ArgParser.prototype =
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OpenLayers.Class.inherit( OpenLayers.Control, {
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/** @type OpenLayers.LonLat */
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center: null,
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/** @type int */
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zoom: null,
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/** @type Array */
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layers: null,
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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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},
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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 dont already 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 != this) &&
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(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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var args = OpenLayers.Util.getArgs();
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if (args.lat && args.lon) {
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this.center = new OpenLayers.LonLat(parseFloat(args.lon),
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parseFloat(args.lat));
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if (args.zoom) {
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this.zoom = parseInt(args.zoom);
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}
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// when we add a new baselayer to see when we can set the center
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this.map.events.register('changebaselayer', this,
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this.setCenter);
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this.setCenter();
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}
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if (args.layers) {
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this.layers = args.layers;
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// when we add a new layer, set its visibility
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this.map.events.register('addlayer', this,
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this.configureLayers);
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this.configureLayers();
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}
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}
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},
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/** As soon as a baseLayer has been loaded, we center and zoom
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* ...and remove the handler.
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*/
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setCenter: function() {
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if (this.map.baseLayer) {
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//dont need to listen for this one anymore
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this.map.events.unregister('changebaselayer', this,
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this.setCenter);
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this.map.setCenter(this.center, this.zoom);
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}
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},
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/** As soon as all the layers are loaded, cycle through them and
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* hide or show them.
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*/
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configureLayers: function() {
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if (this.layers.length == this.map.layers.length) {
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this.map.events.unregister('addlayer', this, this.configureLayers);
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for(var i=0; i < this.layers.length; i++) {
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var layer = this.map.layers[i];
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var c = this.layers.charAt(i);
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if (c == "B") {
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this.map.setBaseLayer(layer);
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} else if ( (c == "T") || (c == "F") ) {
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layer.setVisibility(c == "T");
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}
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}
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}
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Control.ArgParser"
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});
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