1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Open Popup on Layer.Vector</title> <link rel="stylesheet" href="../theme/default/style.css" type="text/css" /> <link rel="stylesheet" href="style.css" type="text/css" /> <style type="text/css"> #controlToggle li { list-style: none; } </style> <script src="../lib/OpenLayers.js"></script> <script type="text/javascript"> var map, drawControls, selectControl, selectedFeature; function onPopupClose(evt) { selectControl.unselect(selectedFeature); } function onFeatureSelect(feature) { selectedFeature = feature; popup = new OpenLayers.Popup.FramedCloud("chicken", feature.geometry.getBounds().getCenterLonLat(), null, "<div style='font-size:.8em'>Feature: " + feature.id +"<br />Area: " + feature.geometry.getArea()+"</div>", null, true, onPopupClose); feature.popup = popup; map.addPopup(popup); } function onFeatureUnselect(feature) { map.removePopup(feature.popup); feature.popup.destroy(); feature.popup = null; } function init(){ map = new OpenLayers.Map('map'); var wmsLayer = new OpenLayers.Layer.WMS( "OpenLayers WMS", "http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'}); var polygonLayer = new OpenLayers.Layer.Vector("Polygon Layer"); map.addLayers([wmsLayer, polygonLayer]); map.addControl(new OpenLayers.Control.LayerSwitcher()); map.addControl(new OpenLayers.Control.MousePosition()); selectControl = new OpenLayers.Control.SelectFeature(polygonLayer, {onSelect: onFeatureSelect, onUnselect: onFeatureUnselect}); drawControls = { polygon: new OpenLayers.Control.DrawFeature(polygonLayer, OpenLayers.Handler.Polygon), select: selectControl }; for(var key in drawControls) { map.addControl(drawControls[key]); } map.setCenter(new OpenLayers.LonLat(0, 0), 3); } function toggleControl(element) { for(key in drawControls) { var control = drawControls[key]; if(element.value == key && element.checked) { control.activate(); } else { control.deactivate(); } } } </script> </head> <body onload="init()"> <h1 id="title">Open Popup on Layer.Vector</h1> <p id="shortdesc"> Using a Control.SelectFeature, open a popup on click. </p> <div id="map" class="smallmap"></div> <ul id="controlToggle"> <li> <input type="radio" name="type" value="none" id="noneToggle" onclick="toggleControl(this);" checked="checked" /> <label for="noneToggle">navigate</label> </li> <li> <input type="radio" name="type" value="polygon" id="polygonToggle" onclick="toggleControl(this);" /> <label for="polygonToggle">draw polygon</label> </li> <li> <input type="radio" name="type" value="select" id="selectToggle" onclick="toggleControl(this);" /> <label for="selectToggle">select polygon on click</label> </li> </ul> <p>It is possible to use the onSelect/onUnselect hooks on the SelectFeature to do fun things -- like open a popup. </p> </body> </html> |