b3ab32950d
git-svn-id: http://svn.openlayers.org/trunk/openlayers@1175 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
104 lines
3.2 KiB
JavaScript
104 lines
3.2 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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OpenLayers.Layer.EventPane = Class.create();
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OpenLayers.Layer.EventPane.prototype = Object.extend(new OpenLayers.Layer, {
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/**
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* @constructor
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*
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* @param {String} name
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* @param {Object} options Hashtable of extra options to tag onto the layer
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*/
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initialize: function(name, options) {
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if (arguments.length > 0) {
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//store a copy of the custom options for later cloning
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this.options = Object.extend(new Object(), options);
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//add options to layer
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Object.extend(this, this.options);
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this.name = name;
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//generate unique id based on name
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this.id = OpenLayers.Util.createUniqueID("Layer_");
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if (this.div == null) {
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this.div = OpenLayers.Util.createDiv();
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this.div.style.width = "100%";
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this.div.style.height = "100%";
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}
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}
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},
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/**
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* @returns An exact clone of this OpenLayers.Layer
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* @type OpenLayers.Layer
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*/
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clone: function (obj) {
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if (obj == null) {
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obj = new OpenLayers.Layer(this.name, this.options);
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}
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// catch any randomly tagged-on properties
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obj = OpenLayers.Util.applyDefaults(obj, this);
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// a cloned layer should never have its map property set
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// because it has not been added to a map yet.
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obj.map = null;
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return obj;
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},
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/** Set the map property for the layer. This is done through an accessor
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* so that subclasses can override this and take special action once
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* they have their map variable set.
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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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this.map = map;
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var properties = new Array(
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'projection', 'minExtent', 'maxExtent',
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'minScale', 'maxScale',
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'maxResolution', 'minResolution',
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'minZoomLevel', 'maxZoomLevel', 'units',
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'scales', 'resolutions'
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);
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for(var i=0; i < properties.length; i++) {
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if (this[properties[i]] == null) {
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this[properties[i]] = this.map[properties[i]];
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}
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}
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},
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/**
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* @param {Boolean} visible
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* @param {Boolean} noEvent
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*/
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setVisibility: function(visible, noEvent) {
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if (visible != this.getVisibility()) {
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this.div.style.display = (visible) ? "block" : "none";
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if ((visible) && (this.map != null)) {
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var extent = this.map.getExtent();
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if (extent != null) {
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this.moveTo(this.map.getExtent());
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}
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}
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if ((this.map != null) &&
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((noEvent == null) || (noEvent == false))) {
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this.map.events.triggerEvent("changelayer");
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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.Layer.EventPane"
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});
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