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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 SLD based selection control</title>
<link rel="stylesheet" href="openlayers/theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<style type="text/css">
.olControlSLDSelectBoxActive {
cursor: crosshair;
}
.olControlSLDSelectPolygonActive {
cursor: crosshair;
}
.olControlSLDSelectLineActive {
cursor: crosshair;
}
.olControlSLDSelectPointActive {
cursor: pointer;
}
</style>
<script src="openlayers/OpenLayers.js"></script>
<script type="text/javascript">
var map, controls, layers;
function init(){
OpenLayers.ProxyHost= "proxy.cgi?url=";
map = new OpenLayers.Map('map', {allOverlays: true, controls: []});
var url = "http://demo.opengeo.org/geoserver/wms";
layers = {
states: new OpenLayers.Layer.WMS("State boundary", url,
{layers: 'topp:tasmania_state_boundaries', format: 'image/gif', transparent: 'TRUE'},
{singleTile: true}),
roads: new OpenLayers.Layer.WMS("Roads", url,
{layers: 'topp:tasmania_roads', format: 'image/gif', transparent: 'TRUE'},
{singleTile: true}),
waterbodies: new OpenLayers.Layer.WMS("Water bodies", url,
{layers: 'topp:tasmania_water_bodies', format: 'image/gif', transparent: 'TRUE'},
{singleTile: true}),
cities: new OpenLayers.Layer.WMS("Cities", url,
{layers: 'topp:tasmania_cities', format: 'image/gif', transparent: 'TRUE'},
{singleTile: true})
};
for (var key in layers) {
map.addLayer(layers[key]);
}
map.setCenter(new OpenLayers.LonLat(146.65748632815,-42.230763671875), 7);
map.addControl(new OpenLayers.Control.LayerSwitcher());
controls = {
navigation: new OpenLayers.Control.Navigation(),
box: new OpenLayers.Control.SLDSelect(
OpenLayers.Handler.RegularPolygon,
{
displayClass: 'olControlSLDSelectBox',
layers: [layers['waterbodies']],
handlerOptions: {irregular: true}
}
),
polygon: new OpenLayers.Control.SLDSelect(
OpenLayers.Handler.Polygon,
{
displayClass: 'olControlSLDSelectPolygon',
layers: [layers['waterbodies']]
}
),
line: new OpenLayers.Control.SLDSelect(
OpenLayers.Handler.Path,
{
displayClass: 'olControlSLDSelectLine',
layers: [layers['waterbodies']]
}
),
point: new OpenLayers.Control.SLDSelect(
OpenLayers.Handler.Click,
{
displayClass: 'olControlSLDSelectPoint',
layers: [layers['waterbodies']]
}
),
circle: new OpenLayers.Control.SLDSelect(
OpenLayers.Handler.RegularPolygon,
{
displayClass: 'olControlSLDSelectBox',
layers: [layers['waterbodies']],
handlerOptions: {sides: 30}
}
)
};
for(var key in controls) {
map.addControl(controls[key]);
}
}
function toggleControl(element) {
for(var key in controls) {
var control = controls[key];
if(element.value == key && element.checked) {
control.activate();
} else {
control.deactivate();
}
}
}
function toggleSelectionLayer(element) {
var selectLayers = [];
var elements = element.value.split("_");
for (var key in layers) {
var layer = layers[key];
for (var i=0, len=elements.length; i<len; i++) {
var value = elements[i];
if (value == key && element.checked) {
selectLayers.push(layer);
}
}
}
for (var i=0, len=this.map.controls.length; i<len; i++) {
var control = this.map.controls[i];
if (control instanceof OpenLayers.Control.SLDSelect) {
control.setLayers(selectLayers);
}
}
}
</script>
</head>
<body onload="init()">
<h1 id="title">SLD based selection on WMS layers</h1>
<div id="tags">
sld, sldselect, styling, style
</div>
<div id="shortdesc">Using Styled Layer Descriptors to make a selection on WMS layers</div>
<div id="map" style="width: 512px; height: 256px; border: 1px solid red;"></div>
<div id="docs">
This example uses the OpenLayers.Control.SLDSelect to select features in a WMS
layer. The features are highlighted using Styled Layer Descriptors (SLD). The
control supports point, box, line and polygon selection modes by configuring the
appriopriate handler.
</div>
<div id="controls">
<ul id="controlToggle"><b>Map Controls</b>
<li>
<input type="radio" name="control" value="navigation" id="noneToggle" onclick="toggleControl(this);" CHECKED>
<label for="noneToggle">navigate</label>
</li>
<li>
<input type="radio" name="control" value="box" id="boxToggle" onclick="toggleControl(this);">
<label for="boxToggle">SLD select with box</label>
</li>
<li>
<input type="radio" name="control" value="polygon" id="polygonToggle" onclick="toggleControl(this);">
<label for="polygonToggle">SLD select with polygon</label>
</li>
<li>
<input type="radio" name="control" value="line" id="lineToggle" onclick="toggleControl(this);">
<label for="lineToggle">SLD select with line</label>
</li>
<li>
<input type="radio" name="control" value="point" id="pointToggle" onclick="toggleControl(this);">
<label for="pointToggle">SLD select with point</label>
</li>
<li>
<input type="radio" name="control" value="circle" id="circleToggle" onclick="toggleControl(this);">
<label for="circleToggle">SLD select with circle</label>
</li>
</ul>
</div>
<div id="layers">
<ul id="layerToggle"><b>Selection layer</b>
<li>
<input type="radio" name="layer" value="waterbodies" id="waterbodiesToggle" onclick="toggleSelectionLayer(this);" CHECKED>
<label for="noneToggle">Water bodies</label>
</li>
<li>
<input type="radio" name="layer" value="cities" id="citiesToggle" onclick="toggleSelectionLayer(this);">
<label for="citiesToggle">Cities</label>
</li>
<li>
<input type="radio" name="layer" value="roads" id="roadsToggle" onclick="toggleSelectionLayer(this);">
<label for="roadsToggle">Roads</label>
</li>
<li>
<input type="radio" name="layer" value="roads_cities" id="roadsCitiesToggle" onclick="toggleSelectionLayer(this);">
<label for="roadsCitiesToggle">Roads and cities</label>
</li>
</ul>
</div>
</body>
</html>
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