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+<!DOCTYPE html>
+<html>
+ <head>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
+ <meta name="apple-mobile-web-app-capable" content="yes">
+ <title>OpenLayers Click Event Example</title>
+
+ <link rel="stylesheet" href="../theme/default/style.css" type="text/css">
+ <link rel="stylesheet" href="style.css" type="text/css">
+ <script src="../lib/OpenLayers.js"></script>
+ <script type="text/javascript">
+ OpenLayers.Control.Click = OpenLayers.Class(OpenLayers.Control, {
+ defaultHandlerOptions: {
+ 'single': true,
+ 'double': false,
+ 'pixelTolerance': 0,
+ 'stopSingle': false,
+ 'stopDouble': false
+ },
+
+ initialize: function(options) {
+ this.handlerOptions = OpenLayers.Util.extend(
+ {}, this.defaultHandlerOptions
+ );
+ OpenLayers.Control.prototype.initialize.apply(
+ this, arguments
+ );
+ this.handler = new OpenLayers.Handler.Click(
+ this, {
+ 'click': this.trigger
+ }, this.handlerOptions
+ );
+ },
+
+ trigger: function(e) {
+ var lonlat = map.getLonLatFromPixel(e.xy);
+ alert("You clicked near " + lonlat.lat + " N, " +
+ + lonlat.lon + " E");
+ }
+
+ });
+ var map;
+ function init(){
+ map = new OpenLayers.Map('map');
+
+ var ol_wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
+ "http://vmap0.tiles.osgeo.org/wms/vmap0?", {layers: 'basic'} );
+
+ var jpl_wms = new OpenLayers.Layer.WMS( "NASA Global Mosaic",
+ "http://t1.hypercube.telascience.org/cgi-bin/landsat7",
+ {layers: "landsat7"});
+
+ jpl_wms.setVisibility(false);
+
+ map.addLayers([ol_wms, jpl_wms]);
+ map.addControl(new OpenLayers.Control.LayerSwitcher());
+ // map.setCenter(new OpenLayers.LonLat(0, 0), 0);
+ map.zoomToMaxExtent();
+
+ var click = new OpenLayers.Control.Click();
+ map.addControl(click);
+ click.activate();
+
+ }
+ </script>
+ </head>
+ <body onload="init()">
+ <h1 id="title">Click Event Example</h1>
+
+ <div id="tags">
+ click control, double, doubleclick, double-click, event, events,
+ propagation, light
+ </div>
+
+ <p id="shortdesc">
+ This example shows the use of the click handler and
+ getLonLatFromPixel functions to trigger events on mouse click.
+ </p>
+
+ <div id="map" class="smallmap"></div>
+
+ <div id="docs">
+ <p>Using the Click handler allows you to (for example) catch clicks
+ without catching double clicks, something that standard browser
+ events don't do for you. (Try double clicking: you'll zoom in,
+ whereas using the browser click event, you would just get two
+ alerts.) This example click control shows you how to use it.</p>
+ </div>
+ </body>
+</html>