a5a63727f5
git-svn-id: http://svn.openlayers.org/branches/openlayers/2.2@1786 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
124 lines
3.1 KiB
JavaScript
124 lines
3.1 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under a modified 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/Layer.js
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*/
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OpenLayers.Layer.Markers = OpenLayers.Class.create();
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OpenLayers.Layer.Markers.prototype =
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OpenLayers.Class.inherit( OpenLayers.Layer, {
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/** Markers layer is never a base layer.
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*
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* @type Boolean
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*/
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isBaseLayer: false,
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/** internal marker list
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* @type Array(OpenLayers.Marker) */
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markers: null,
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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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OpenLayers.Layer.prototype.initialize.apply(this, arguments);
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this.markers = new Array();
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},
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/**
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*
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*/
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destroy: function() {
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this.clearMarkers();
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markers = null;
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OpenLayers.Layer.prototype.destroy.apply(this, arguments);
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},
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/**
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* @param {OpenLayers.Bounds} bounds
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* @param {Boolean} zoomChanged
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* @param {Boolean} dragging
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*/
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moveTo:function(bounds, zoomChanged, dragging) {
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OpenLayers.Layer.prototype.moveTo.apply(this, arguments);
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if (zoomChanged) {
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this.redraw();
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}
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},
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/**
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* @param {OpenLayers.Marker} marker
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*/
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addMarker: function(marker) {
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this.markers.push(marker);
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if (this.map && this.map.getExtent()) {
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marker.map = this.map;
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this.drawMarker(marker);
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}
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},
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/**
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* @param {OpenLayers.Marker} marker
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*/
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removeMarker: function(marker) {
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OpenLayers.Util.removeItem(this.markers, marker);
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if ((marker.icon != null) && (marker.icon.imageDiv != null) &&
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(marker.icon.imageDiv.parentNode == this.div) ) {
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this.div.removeChild(marker.icon.imageDiv);
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}
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},
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/**
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*
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*/
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clearMarkers: function() {
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if (this.markers != null) {
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while(this.markers.length > 0) {
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this.removeMarker(this.markers[0]);
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}
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}
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},
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/** clear all the marker div's from the layer and then redraw all of them.
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* Use the map to recalculate new placement of markers.
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*/
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redraw: function() {
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for(i=0; i < this.markers.length; i++) {
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this.drawMarker(this.markers[i]);
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}
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},
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/** Calculate the pixel location for the marker, create it, and
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* add it to the layer's div
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*
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* @private
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*
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* @param {OpenLayers.Marker} marker
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*/
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drawMarker: function(marker) {
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var px = this.map.getLayerPxFromLonLat(marker.lonlat);
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if (px == null) {
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marker.display(false);
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} else {
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var markerImg = marker.draw(px);
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if (!marker.drawn) {
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this.div.appendChild(markerImg);
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marker.drawn = true;
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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.Markers"
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});
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