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<a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008 Overview
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<b><a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008</b></em>
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<hr>
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<center>
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<h2>GetFeatureInfo.js</h2>
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<h4>Summary</h4>
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<p>
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No overview generated for 'GetFeatureInfo.js'<BR/><BR/>
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<td colspan=2><font size="+2">
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<b>Class Summary</b>
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</font></td>
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</tr>
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<tr bgcolor="white" class="TableRowColor">
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<td width="15%"><b><a href="GetFeatureInfo.html">GetFeatureInfo</a></b></td>
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<td> </td>
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</table>
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<hr/>
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<!-- ========== METHOD SUMMARY =========== -->
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<!-- ========== END METHOD SUMMARY =========== -->
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<pre class="sourceview"><span class="comment">/*
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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Dependancies: Context
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$Id: GetFeatureInfo.js 3906 2008-03-05 10:27:30Z ahocevar $
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*/</span>
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<span class="comment">
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// Ensure this object's dependancies are loaded.</span>
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mapbuilder.loadScript(baseDir+<span class="literal">"/widget/ButtonBase.js"</span>);
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<span class="comment">/**
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* Implements WMS GetFeatureInfo functionality, popping up a query result
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* window when user clicks on map.
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* <span class="attrib">@constructor</span>
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* <span class="attrib">@base</span> ButtonBase
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* <span class="attrib">@author</span> Nedjo
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* <span class="attrib">@constructor</span>
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* <span class="attrib">@param</span> toolNode The XML node in the Config file referencing this object.
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* <span class="attrib">@param</span> model The widget object which this tool is associated with.
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*/</span>
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<span class="reserved">function</span> GetFeatureInfo(widgetNode, model) {
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<span class="comment"> // Extend ButtonBase</span>
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ButtonBase.apply(<span class="reserved">this</span>, new Array(widgetNode, model));
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<span class="comment">/** Xsl to build a GetFeatureInfo URL */</span>
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<span class="reserved">this</span>.xsl = new XslProcessor(
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<span class="reserved">this</span>.getProperty(<span class="literal">"mb:stylesheet"</span>, baseDir+<span class="literal">"/tool/GetFeatureInfo.xsl"</span>));
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<span class="comment">/**
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* Determine whether Query result is returned as text, HTML or GML
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* This is usually text/plain, text/html or application/vnd.ogc.gml
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*/</span>
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<span class="reserved">this</span>.infoFormat = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:infoFormat"</span>, <span class="literal">"application/vnd.ogc.gml"</span>);
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<span class="comment">
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// Get the value for featureCount from the configfile</span>
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<span class="reserved">this</span>.featureCount = <span class="reserved">this</span>.getProperty(<span class="literal">"mb:featureCount"</span>, 1);
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<span class="reserved">this</span>.cursor = <span class="literal">"pointer"</span>;
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<span class="comment">/**
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* GetFeatureInfo control
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* <span class="attrib">@param</span> objRef reference to this object.
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* <span class="attrib">@return</span> {OpenLayers.Control} class of the OL control.
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*/</span>
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<span class="reserved">this</span>.createControl = <span class="reserved">function</span>(objRef) {
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var Control = OpenLayers.Class( OpenLayers.Control, {
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CLASS_NAME: <span class="literal">'mbControl.GetFeatureInfo'</span>,
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type: OpenLayers.Control.TYPE_TOOL,
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draw: <span class="reserved">function</span>() {
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<span class="reserved">this</span>.handler = new OpenLayers.Handler.Box( <span class="reserved">this</span>,
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{done: <span class="reserved">this</span>.zoomBox}, {keyMask: <span class="reserved">this</span>.keyMask} );
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},
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zoomBox: <span class="reserved">function</span>(position) {
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var objRef = <span class="reserved">this</span>.objRef
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<span class="reserved">if</span> (objRef.enabled) {
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var x,y;
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<span class="reserved">if</span> (position instanceof OpenLayers.Bounds) {
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x = position.left + (position.right - position.left) / 2;
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y = position.top + (position.bottom - position.top) / 2;
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} <span class="reserved">else</span> {
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x = position.x;
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y = position.y;
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}
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objRef.targetModel.deleteTemplates();
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var selectedLayer=objRef.targetContext.getParam(<span class="literal">"selectedLayer"</span>);
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<span class="reserved">if</span> (selectedLayer==null) {
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var queryList=objRef.targetContext.getQueryableLayers();
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<span class="reserved">if</span> (queryList.length==0) {
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alert(mbGetMessage(<span class="literal">"noQueryableLayers"</span>));
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<span class="reserved">return</span>;
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}
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<span class="reserved">else</span> {
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<span class="reserved">for</span> (var i=0; i<queryList.length; ++i) {
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var layerNode = queryList[i];
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<span class="comment">
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// Get the name of the layer</span>
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var layerName = Mapbuilder.getProperty(layerNode, <span class="literal">"wmc:Name"</span>, <span class="literal">""</span>);
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<span class="comment">
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// Get the layerId. Fallback to layerName if non-existent</span>
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var layerId = layerNode.getAttribute(<span class="literal">"id"</span>) || layerName;
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var hidden = objRef.targetContext.getHidden(layerId);
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<span class="reserved">if</span> (hidden == 0) { //query only visible layers
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objRef.xsl.setParameter(<span class="literal">"queryLayer"</span>, layerName);
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objRef.xsl.setParameter(<span class="literal">"layer"</span>,layerName);
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objRef.xsl.setParameter(<span class="literal">"xCoord"</span>, x);
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objRef.xsl.setParameter(<span class="literal">"yCoord"</span>, y);
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objRef.xsl.setParameter(<span class="literal">"infoFormat"</span>, objRef.infoFormat);
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objRef.xsl.setParameter(<span class="literal">"featureCount"</span>, objRef.featureCount);
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urlNode=objRef.xsl.transformNodeToObject(objRef.targetContext.doc);
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url=getNodeValue(urlNode.documentElement);
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httpPayload = new Object();
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httpPayload.url = url;
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httpPayload.method=<span class="literal">"get"</span>;
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httpPayload.postData=null;
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objRef.targetModel.newRequest(objRef.targetModel,httpPayload);
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}
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}
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}
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}
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<span class="reserved">else</span> {
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objRef.xsl.setParameter(<span class="literal">"queryLayer"</span>, selectedLayer);
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objRef.xsl.setParameter(<span class="literal">"layer"</span>, layerName);
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objRef.xsl.setParameter(<span class="literal">"xCoord"</span>, x);
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objRef.xsl.setParameter(<span class="literal">"yCoord"</span>, y);
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objRef.xsl.setParameter(<span class="literal">"infoFormat"</span>, objRef.infoFormat);
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objRef.xsl.setParameter(<span class="literal">"featureCount"</span>, objRef.featureCount);
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var urlNode=objRef.xsl.transformNodeToObject(objRef.targetContext.doc);
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var url=getNodeValue(urlNode.documentElement);
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<span class="reserved">if</span> (objRef.infoFormat==<span class="literal">"text/html"</span>){
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window.open(url,<span class="literal">'queryWin'</span>,<span class="literal">'height=200,width=300,scrollbars=yes'</span>);
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} <span class="reserved">else</span> {
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httpPayload.url = url;
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httpPayload.method=<span class="literal">"get"</span>;
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httpPayload.postData=null;
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objRef.targetModel.newRequest(objRef.targetModel,httpPayload);
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}
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}
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}
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}
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});
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<span class="reserved">return</span> Control;
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}
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}
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</pre>
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<td bgcolor="#EEEEFF" align="right" valign="top"><em>
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<b><a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008</b></em>
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<script>
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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Sun Apr 27 20:30:54 2008</div>
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