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authorChris Schlaeger <chris@linux.com>2014-08-12 21:56:44 +0200
committerChris Schlaeger <chris@linux.com>2014-08-12 21:56:44 +0200
commitea346a785dc1b3f7c156f6fc33da634e1f1a627b (patch)
treeaf67530553d20b6e82ad60fd79593e9c4abf5565 /misc/openlayers/lib/OpenLayers/Layer/Markers.js
parent59741cd535c47f25971bf8c32b25da25ceadc6d5 (diff)
downloadpostrunner-ea346a785dc1b3f7c156f6fc33da634e1f1a627b.zip
Adding jquery, flot and openlayers to be included with the GEM.v0.0.4
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+/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
+ * full list of contributors). Published under the 2-clause BSD license.
+ * See license.txt in the OpenLayers distribution or repository for the
+ * full text of the license. */
+
+
+/**
+ * @requires OpenLayers/Layer.js
+ */
+
+/**
+ * Class: OpenLayers.Layer.Markers
+ *
+ * Inherits from:
+ * - <OpenLayers.Layer>
+ */
+OpenLayers.Layer.Markers = OpenLayers.Class(OpenLayers.Layer, {
+
+ /**
+ * APIProperty: isBaseLayer
+ * {Boolean} Markers layer is never a base layer.
+ */
+ isBaseLayer: false,
+
+ /**
+ * APIProperty: markers
+ * {Array(<OpenLayers.Marker>)} internal marker list
+ */
+ markers: null,
+
+
+ /**
+ * Property: drawn
+ * {Boolean} internal state of drawing. This is a workaround for the fact
+ * that the map does not call moveTo with a zoomChanged when the map is
+ * first starting up. This lets us catch the case where we have *never*
+ * drawn the layer, and draw it even if the zoom hasn't changed.
+ */
+ drawn: false,
+
+ /**
+ * Constructor: OpenLayers.Layer.Markers
+ * Create a Markers layer.
+ *
+ * Parameters:
+ * name - {String}
+ * options - {Object} Hashtable of extra options to tag onto the layer
+ */
+ initialize: function(name, options) {
+ OpenLayers.Layer.prototype.initialize.apply(this, arguments);
+ this.markers = [];
+ },
+
+ /**
+ * APIMethod: destroy
+ */
+ destroy: function() {
+ this.clearMarkers();
+ this.markers = null;
+ OpenLayers.Layer.prototype.destroy.apply(this, arguments);
+ },
+
+ /**
+ * APIMethod: setOpacity
+ * Sets the opacity for all the markers.
+ *
+ * Parameters:
+ * opacity - {Float}
+ */
+ setOpacity: function(opacity) {
+ if (opacity != this.opacity) {
+ this.opacity = opacity;
+ for (var i=0, len=this.markers.length; i<len; i++) {
+ this.markers[i].setOpacity(this.opacity);
+ }
+ }
+ },
+
+ /**
+ * Method: moveTo
+ *
+ * Parameters:
+ * bounds - {<OpenLayers.Bounds>}
+ * zoomChanged - {Boolean}
+ * dragging - {Boolean}
+ */
+ moveTo:function(bounds, zoomChanged, dragging) {
+ OpenLayers.Layer.prototype.moveTo.apply(this, arguments);
+
+ if (zoomChanged || !this.drawn) {
+ for(var i=0, len=this.markers.length; i<len; i++) {
+ this.drawMarker(this.markers[i]);
+ }
+ this.drawn = true;
+ }
+ },
+
+ /**
+ * APIMethod: addMarker
+ *
+ * Parameters:
+ * marker - {<OpenLayers.Marker>}
+ */
+ addMarker: function(marker) {
+ this.markers.push(marker);
+
+ if (this.opacity < 1) {
+ marker.setOpacity(this.opacity);
+ }
+
+ if (this.map && this.map.getExtent()) {
+ marker.map = this.map;
+ this.drawMarker(marker);
+ }
+ },
+
+ /**
+ * APIMethod: removeMarker
+ *
+ * Parameters:
+ * marker - {<OpenLayers.Marker>}
+ */
+ removeMarker: function(marker) {
+ if (this.markers && this.markers.length) {
+ OpenLayers.Util.removeItem(this.markers, marker);
+ marker.erase();
+ }
+ },
+
+ /**
+ * Method: clearMarkers
+ * This method removes all markers from a layer. The markers are not
+ * destroyed by this function, but are removed from the list of markers.
+ */
+ clearMarkers: function() {
+ if (this.markers != null) {
+ while(this.markers.length > 0) {
+ this.removeMarker(this.markers[0]);
+ }
+ }
+ },
+
+ /**
+ * Method: drawMarker
+ * Calculate the pixel location for the marker, create it, and
+ * add it to the layer's div
+ *
+ * Parameters:
+ * marker - {<OpenLayers.Marker>}
+ */
+ drawMarker: function(marker) {
+ var px = this.map.getLayerPxFromLonLat(marker.lonlat);
+ if (px == null) {
+ marker.display(false);
+ } else {
+ if (!marker.isDrawn()) {
+ var markerImg = marker.draw(px);
+ this.div.appendChild(markerImg);
+ } else if(marker.icon) {
+ marker.icon.moveTo(px);
+ }
+ }
+ },
+
+ /**
+ * APIMethod: getDataExtent
+ * Calculates the max extent which includes all of the markers.
+ *
+ * Returns:
+ * {<OpenLayers.Bounds>}
+ */
+ getDataExtent: function () {
+ var maxExtent = null;
+
+ if ( this.markers && (this.markers.length > 0)) {
+ var maxExtent = new OpenLayers.Bounds();
+ for(var i=0, len=this.markers.length; i<len; i++) {
+ var marker = this.markers[i];
+ maxExtent.extend(marker.lonlat);
+ }
+ }
+
+ return maxExtent;
+ },
+
+ CLASS_NAME: "OpenLayers.Layer.Markers"
+});