99f3fa0d26
git-svn-id: http://svn.openlayers.org/trunk/openlayers@6066 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
226 lines
9.0 KiB
HTML
226 lines
9.0 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>OpenLayers Click Handler Example</title>
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<style type="text/css">
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#map {
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width: 340px;
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height: 170px;
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border: 1px solid gray;
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}
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#west {
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width: 350px;
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}
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#east {
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position: absolute;
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left: 370px;
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top: 3em;
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}
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table td {
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text-align: center;
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margin: 0;
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border: 1px solid gray;
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}
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textarea.output {
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text-align: left;
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font-size: 0.9em;
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width: 250px;
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height: 65px;
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overflow: auto;
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}
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</style>
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<script src="../lib/Firebug/firebug.js"></script>
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<script src="../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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OpenLayers.Control.Click = OpenLayers.Class(OpenLayers.Control, {
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defaultHandlerOptions: {
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'single': true,
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'double': false,
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'pixelTolerance': 0,
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'stopSingle': false,
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'stopDouble': false
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},
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initialize: function(options) {
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this.handlerOptions = OpenLayers.Util.extend(
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{}, this.defaultHandlerOptions
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);
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OpenLayers.Control.prototype.initialize.apply(
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this, arguments
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);
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this.handler = new OpenLayers.Handler.Click(
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this, {
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'click': this.onClick,
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'dblclick': this.onDblclick
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}, this.handlerOptions
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);
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},
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onClick: function(evt) {
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var output = document.getElementById(this.key + "Output");
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var msg = "click " + evt.xy;
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output.value = output.value + msg + "\r\n";
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},
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onDblclick: function(evt) {
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var output = document.getElementById(this.key + "Output");
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var msg = "dblclick " + evt.xy;
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output.value = output.value + msg + "\n";
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}
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});
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var map, controls;
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function init(){
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map = new OpenLayers.Map('map');
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var layer = new OpenLayers.Layer.WMS(
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"OpenLayers WMS",
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"http://labs.metacarta.com/wms/vmap0",
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{layers: 'basic'}
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);
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map.addLayers([layer]);
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controls = {
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"single": new OpenLayers.Control.Click({
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hanlerOptions: {
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"single": true
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}
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}),
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"double": new OpenLayers.Control.Click({
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handlerOptions: {
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"single": false,
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"double": true
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}
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}),
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"both": new OpenLayers.Control.Click({
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handlerOptions: {
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"single": true,
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"double": true
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}
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}),
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"drag": new OpenLayers.Control.Click({
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handlerOptions: {
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"single": true,
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"pixelTolerance": null
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}
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}),
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"stopsingle": new OpenLayers.Control.Click({
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handlerOptions: {
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"single": true,
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"stopSingle": true
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}
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}),
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"stopdouble": new OpenLayers.Control.Click({
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handlerOptions: {
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"single": false,
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"double": true,
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"stopDouble": true
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}
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})
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};
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var props = document.getElementById("props");
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var control;
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for(var key in controls) {
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control = controls[key];
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// only to route output here
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control.key = key;
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map.addControl(control);
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}
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map.zoomToMaxExtent();
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}
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function toggle(key) {
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var control = controls[key];
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if(control.active) {
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control.deactivate();
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} else {
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control.activate();
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}
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var status = document.getElementById(key + "Status");
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status.innerHTML = control.active ? "on" : "off";
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var output = document.getElementById(key + "Output");
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output.value = "";
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}
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</script>
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</head>
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<body onload="init()">
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<h1 id="title">Click Handler Example</h1>
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<div id="west">
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<div id="tags">
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</div>
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<p id="shortdesc">
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This example shows the use of the click handler.
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</p>
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<div id="map"></div>
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<p>
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The click handler can be used to gain more flexibility over handling
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click events. The handler can be constructed with options to handle
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only single click events, to handle single and double-click events,
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to ignore clicks that include a drag, and to stop propagation of
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single and/or double-click events. A single click is a click that
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is not followed by another click for more than 300ms. This delay
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is configured with the delay property.
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</p>
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<p>
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The options to stop single and double clicks have to do with
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stopping event propagation on the map events listener queue
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(not stopping events from cascading to other elements). The
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ability to stop an event from propagating has to do with the
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order in which listeners are registered. With stopSingle or
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stopDouble true, a click handler will stop propagation to all
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listeners that were registered (or all handlers that were
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activated) before the click handler was activated. So, for
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example, activating a click handler with stopDouble true after
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the navigation control is active will stop double-clicks from
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zooming in.
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</p>
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</div>
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<div id="east">
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<table>
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<caption>Controls with click handlers (toggle on/off to clear output)</caption>
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<tbody>
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<tr>
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<td>single only</td>
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<td><button id="singleStatus" onclick="toggle('single')">off</button></td>
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<td><textarea class="output" id="singleOutput"></textarea></td>
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</tr>
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<tr>
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<td>double only</td>
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<td><button id="doubleStatus" onclick="toggle('double')">off</button></td>
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<td><textarea class="output" id="doubleOutput"></textarea></td>
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</tr>
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<tr>
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<td>both</td>
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<td><button id="bothStatus" onclick="toggle('both')">off</button></td>
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<td><textarea class="output" id="bothOutput"></textarea></td>
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</tr>
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<tr>
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<td>single with drag</td>
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<td><button id="dragStatus" onclick="toggle('drag')">off</button></td>
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<td><textarea class="output" id="dragOutput"></textarea></td>
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</tr>
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<tr>
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<td>single with stop</td>
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<td><button id="stopsingleStatus" onclick="toggle('stopsingle')">off</button></td>
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<td><textarea class="output" id="stopsingleOutput"></textarea></td>
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</tr>
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<tr>
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<td>double with stop</td>
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<td><button id="stopdoubleStatus" onclick="toggle('stopdouble')">off</button></td>
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<td><textarea class="output" id="stopdoubleOutput"></textarea></td>
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</tr>
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</tbody>
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</table>
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</div>
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</body>
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</html>
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