53977cf840
* Add a 'style' property to the layer. * When a feature is added to a layer, either uses the style on the layer, or uses the default feature style. * Add test to Layer.Vector for this funcionality * Adds a preFeatureInsert hook to change a feature *before* drawing it. * Change openmnnd demo to include the use of preFeatureInsert and style attribute on layer. git-svn-id: http://svn.openlayers.org/trunk/openlayers@2949 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
150 lines
5.9 KiB
HTML
150 lines
5.9 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<style type="text/css">
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#map {
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width: 600px;
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height: 475px;
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border: 1px solid black;
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}
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#info {
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float: right;
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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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<!--
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var map, layer;
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function init(){
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OpenLayers.ProxyHost="/proxy/?url=";
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map = new OpenLayers.Map( $('map'), {'maxResolution':'auto', maxExtent: new OpenLayers.Bounds(-203349.72008129774,4816309.33,1154786.8041952979,5472346.5), projection: 'EPSG:26915' } );
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layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
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["http://geoint.lmic.state.mn.us/cgi-bin/wms"], {layers: 'fsa'} );
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map.addLayer(layer);
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wfs_url = "http://prototype.openmnnd.org/cgi-bin/mapserv.exe?map=openmnndwfs/openmnndwfs.map";
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wms = new OpenLayers.Layer.WMS("Minnesota Parcels (WMS)", wfs_url, {'layers':'streams', 'transparent': true, 'format':'image/gif'});
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map.addLayer(wms);
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wfs = new OpenLayers.Layer.WFS("Minnesota Streams (WFS)", wfs_url, {'typename':'streams'}, {ratio:1.25, minZoomLevel:4});
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// preFeatureInsert can be used to set style before the feature is drawn
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wfs.preFeatureInsert= function(feature) { feature.style.strokeWidth="3"; feature.style.strokeColor="blue";
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}
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wfs.onFeatureInsert = function() {
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$('stream_features').innerHTML = feature.layer.features.length;
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}
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map.addLayer(wfs);
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// Or a style can be set on the layer.
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pwfsstyle = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']);
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OpenLayers.Util.extend(pwfsstyle, {'fillColor': 'green'});
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pwfs = new OpenLayers.Layer.WFS("Minnesota Plat (WFS)", wfs_url,
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{'typename':'plat'},
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{
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ratio:1.25,
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minZoomLevel:8,
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extractAttributes: true,
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style: pwfsstyle
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});
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pwfs.onFeatureInsert= function(feature) {
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$('plat_features').innerHTML = feature.layer.features.length;
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}
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map.addLayer(pwfs);
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rstyle = OpenLayers.Util.extend({}, OpenLayers.Feature.Vector.style['default']);
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OpenLayers.Util.extend(rstyle, {'strokeColor': 'white', strokeWIdth: "4"});
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rwfs = new OpenLayers.Layer.WFS("Minnesota Roads (WFS)", wfs_url, {'typename':'roads'},
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{ratio:1.25, minZoomLevel:7, extractAttributes: true, style:rstyle});
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rwfs.onFeatureInsert= function(feature) {
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$('road_features').innerHTML = feature.layer.features.length;
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}
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map.addLayer(rwfs);
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map.events.register('moveend', null, function() {
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$('stream_features').innerHTML = "0";
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$('road_features').innerHTML = "0";
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$('plat_features').innerHTML = "0";
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});
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var ls = new OpenLayers.Control.LayerSwitcher();
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map.addControl(ls);
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drawControls = {
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selectPlat: new OpenLayers.Control.SelectFeature(pwfs, {callbacks: {'up':feature_info,'over':feature_info_hover}}),
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selectRoad: new OpenLayers.Control.SelectFeature(rwfs, {callbacks: {'up':feature_info,'over':feature_info_hover}})
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};
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for(var key in drawControls) {
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map.addControl(drawControls[key]);
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}
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drawControls.selectPlat.activate();
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map.zoomToExtent(new OpenLayers.Bounds(303232.550864,5082911.694856,305885.161263,5084486.682281));
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}
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function toggleControl(element) {
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for(key in drawControls) {
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var control = drawControls[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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var displayedGeom = null;
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function feature_info_hover(geometry) {
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if(geometry.parent) {
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geometry = geometry.parent;
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}
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if (displayedGeom != geometry &&
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(!geometry.feature.layer.selectedFeatures.length ||
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(geometry.feature.layer.selectedFeatures[0].geometry == geometry))) {
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feature_info(geometry);
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displaydGeom = geometry;
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}
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}
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function feature_info(geometry) {
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if(geometry.parent) {
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geometry = geometry.parent;
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}
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var html = "<ul>";
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for(var i in geometry.feature.attributes)
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html += "<li><b>" + i + "</b>: "+ geometry.feature.attributes[i] + "</li>";
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html += "</ul>";
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$('feature_info').innerHTML = html;
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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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<div id="info">
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<ul>
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<li>Streams: Feature Count <span id="stream_features">0</span></li>
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<li>Plat: Feature Count <span id="plat_features">0</span></li>
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<li>Roads: Feature Count <span id="road_features">0</span></li>
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</ul>
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<div id="feature_info">
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</div>
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<ul>
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<li>
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<input type="radio" name="type" value="selectRoad" id="selectToggle" onclick="toggleControl(this);" />
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<label for="selectToggle">select road</label>
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</li>
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<li>
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<input type="radio" name="type" value="selectPlat" id="selectToggle" onclick="toggleControl(this);" checked=checked />
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<label for="selectToggle">select polygon</label>
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</li>
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</ul>
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</div>
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<div id="map"></div>
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</body>
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</html>
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