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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">
<link rel="stylesheet" href="openlayers/theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<title>WFS: GetFeature Example (GeoServer)</title>
<script src="openlayers/OpenLayers.js"></script>
<script type="text/javascript">
var map, layer, select, hover, control;
function init(){
OpenLayers.ProxyHost= "proxy.cgi?url=";
map = new OpenLayers.Map('map', {
controls: [
new OpenLayers.Control.PanZoom(),
new OpenLayers.Control.Permalink(),
new OpenLayers.Control.Navigation()
]
});
layer = new OpenLayers.Layer.WMS(
"States WMS/WFS",
"http://v2.suite.opengeo.org/geoserver/ows",
{layers: 'usa:states', format: 'image/gif'}
);
select = new OpenLayers.Layer.Vector("Selection", {styleMap:
new OpenLayers.Style(OpenLayers.Feature.Vector.style["select"])
});
hover = new OpenLayers.Layer.Vector("Hover");
map.addLayers([layer, hover, select]);
control = new OpenLayers.Control.GetFeature({
protocol: OpenLayers.Protocol.WFS.fromWMSLayer(layer),
box: true,
hover: true,
multipleKey: "shiftKey",
toggleKey: "ctrlKey"
});
control.events.register("featureselected", this, function(e) {
select.addFeatures([e.feature]);
});
control.events.register("featureunselected", this, function(e) {
select.removeFeatures([e.feature]);
});
control.events.register("hoverfeature", this, function(e) {
hover.addFeatures([e.feature]);
});
control.events.register("outfeature", this, function(e) {
hover.removeFeatures([e.feature]);
});
map.addControl(control);
control.activate();
map.setCenter(new OpenLayers.Bounds(-140.444336,25.115234,-44.438477,50.580078).getCenterLonLat(), 3);
}
</script>
</head>
<body onload="init()">
<h1 id="title">WFS GetFeature Example (GeoServer)</h1>
<div id="tags">
WFS, GetFeature
</div>
<p id="shortdesc">
Shows how to use the GetFeature control to select features from a WMS layer.
</p>
<div id="map" class="smallmap"></div>
<div id="docs">
<p>
Click or drag a box to select features, use the Shift key to add
features to the selection, use the Ctrl key to toggle a feature's
selected status. Note that this control also has a hover option, which
is enabled in this example. This gives you a visual feedback by loading
the feature underneath the mouse pointer from the WFS, but causes a lot
of GetFeature requests to be issued.
</p>
</div>
</body>
</html>
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