Create control to perform SLD selections on WMS layers, r=ahocevar (closes #2570)
git-svn-id: http://svn.openlayers.org/trunk/openlayers@10290 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
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bartvde
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examples/SLDSelect.html
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196
examples/SLDSelect.html
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>OpenLayers SLD based selection control</title>
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<link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
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<link rel="stylesheet" href="style.css" type="text/css" />
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<style type="text/css">
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.olControlSLDSelectBoxActive {
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cursor: crosshair;
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}
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.olControlSLDSelectPolygonActive {
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cursor: crosshair;
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}
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.olControlSLDSelectLineActive {
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cursor: crosshair;
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}
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.olControlSLDSelectPointActive {
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cursor: pointer;
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}
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</style>
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<script src="../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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var map, controls, layers;
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function init(){
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OpenLayers.ProxyHost= "proxy.cgi?url=";
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map = new OpenLayers.Map('map', {allOverlays: true, controls: []});
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var url = "http://demo.opengeo.org/geoserver/wms";
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layers = {
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states: new OpenLayers.Layer.WMS("State boundary", url,
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{layers: 'topp:tasmania_state_boundaries', format: 'image/gif', transparent: 'TRUE'},
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{singleTile: true}),
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roads: new OpenLayers.Layer.WMS("Roads", url,
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{layers: 'topp:tasmania_roads', format: 'image/gif', transparent: 'TRUE'},
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{singleTile: true}),
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waterbodies: new OpenLayers.Layer.WMS("Water bodies", url,
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{layers: 'topp:tasmania_water_bodies', format: 'image/gif', transparent: 'TRUE'},
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{singleTile: true}),
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cities: new OpenLayers.Layer.WMS("Cities", url,
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{layers: 'topp:tasmania_cities', format: 'image/gif', transparent: 'TRUE'},
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{singleTile: true})
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};
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for (var key in layers) {
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map.addLayer(layers[key]);
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}
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map.setCenter(new OpenLayers.LonLat(146.65748632815,-42.230763671875), 7);
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map.addControl(new OpenLayers.Control.LayerSwitcher());
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controls = {
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navigation: new OpenLayers.Control.Navigation(),
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box: new OpenLayers.Control.SLDSelect(
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OpenLayers.Handler.RegularPolygon,
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{
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displayClass: 'olControlSLDSelectBox',
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layers: [layers['waterbodies']],
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handlerOptions: {irregular: true}
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}
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),
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polygon: new OpenLayers.Control.SLDSelect(
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OpenLayers.Handler.Polygon,
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{
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displayClass: 'olControlSLDSelectPolygon',
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layers: [layers['waterbodies']]
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}
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),
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line: new OpenLayers.Control.SLDSelect(
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OpenLayers.Handler.Path,
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{
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displayClass: 'olControlSLDSelectLine',
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layers: [layers['waterbodies']]
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}
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),
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point: new OpenLayers.Control.SLDSelect(
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OpenLayers.Handler.Click,
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{
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displayClass: 'olControlSLDSelectPoint',
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layers: [layers['waterbodies']]
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}
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),
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circle: new OpenLayers.Control.SLDSelect(
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OpenLayers.Handler.RegularPolygon,
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{
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displayClass: 'olControlSLDSelectBox',
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layers: [layers['waterbodies']],
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handlerOptions: {sides: 40}
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}
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)
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};
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for(var key in controls) {
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map.addControl(controls[key]);
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}
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}
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function toggleControl(element) {
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for(var key in controls) {
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var control = controls[key];
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if(element.value == key && element.checked) {
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control.activate();
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} else {
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control.deactivate();
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}
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}
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}
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function toggleSelectionLayer(element) {
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var selectLayers = [];
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var elements = element.value.split("_");
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for (var key in layers) {
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var layer = layers[key];
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for (var i=0, len=elements.length; i<len; i++) {
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var value = elements[i];
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if (value == key && element.checked) {
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selectLayers.push(layer);
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}
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}
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}
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for (var i=0, len=this.map.controls.length; i<len; i++) {
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var control = this.map.controls[i];
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if (control instanceof OpenLayers.Control.SLDSelect) {
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control.setLayers(selectLayers);
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}
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}
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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">SLD based selection on WMS layers</h1>
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<div id="tags"></div>
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<div id="shortdesc">Using Styled Layer Descriptors to make a selection on WMS layers</div>
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<div id="map" style="width: 512; height: 256; border: 1px solid red;"></div>
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<div id="docs">
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This example uses the OpenLayers.Control.SLDSelect to select features in a WMS
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layer. The features are highlighted using Styled Layer Descriptors (SLD). The
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control supports point, box, line and polygon selection modes by configuring the
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appriopriate handler.
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</div>
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<div id="controls">
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<ul id="controlToggle"><b>Map Controls</b>
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<li>
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<input type="radio" name="control" value="navigation" id="noneToggle" onclick="toggleControl(this);" CHECKED>
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<label for="noneToggle">navigate</label>
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</li>
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<li>
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<input type="radio" name="control" value="box" id="boxToggle" onclick="toggleControl(this);">
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<label for="boxToggle">SLD select with box</label>
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</li>
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<li>
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<input type="radio" name="control" value="polygon" id="polygonToggle" onclick="toggleControl(this);">
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<label for="polygonToggle">SLD select with polygon</label>
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</li>
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<li>
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<input type="radio" name="control" value="line" id="lineToggle" onclick="toggleControl(this);">
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<label for="lineToggle">SLD select with line</label>
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</li>
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<li>
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<input type="radio" name="control" value="point" id="pointToggle" onclick="toggleControl(this);">
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<label for="pointToggle">SLD select with point</label>
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</li>
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<li>
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<input type="radio" name="control" value="circle" id="circleToggle" onclick="toggleControl(this);">
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<label for="circleToggle">SLD select with circle</label>
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</li>
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</ul>
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</div>
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<div id="layers">
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<ul id="layerToggle"><b>Selection layer</b>
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<li>
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<input type="radio" name="layer" value="waterbodies" id="waterbodiesToggle" onclick="toggleSelectionLayer(this);" CHECKED>
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<label for="noneToggle">Water bodies</label>
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</li>
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<li>
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<input type="radio" name="layer" value="cities" id="citiesToggle" onclick="toggleSelectionLayer(this);">
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<label for="citiesToggle">Cities</label>
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</li>
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<li>
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<input type="radio" name="layer" value="roads" id="roadsToggle" onclick="toggleSelectionLayer(this);">
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<label for="roadsToggle">Roads</label>
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</li>
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<li>
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<input type="radio" name="layer" value="roads_cities" id="roadsCitiesToggle" onclick="toggleSelectionLayer(this);">
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<label for="roadsCitiesToggle">Roads and cities</label>
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</li>
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</ul>
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</div>
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</body>
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</html>
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