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/*
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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 2673 2005-10-13 03:47:16Z harris $
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*/
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// Ensure this object's dependancies are loaded.
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mapbuilder.loadScript(baseDir+"/tool/ButtonBase.js");
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/**
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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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* @constructor
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* @base ButtonBase
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* @author Nedjo
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* @constructor
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* @param toolNode The XML node in the Config file referencing this object.
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* @param model The widget object which this tool is associated with.
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*/
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function GetFeatureInfo(toolNode, model) {
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// Extend ButtonBase
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var base = new ButtonBase(this, toolNode, model);
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/** Xsl to build a GetFeatureInfo URL */
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this.xsl=new XslProcessor(baseDir+"/tool/GetFeatureInfo.xsl");
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/** Determine whether Query result is returned as HTML or GML */
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// TBD This should be stored in the Config file.
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//this.infoFormat="application/vnd.ogc.gml";
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this.infoFormat="text/html";
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/**
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* Open window with query info.
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* This function is called when user clicks map with Query tool.
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* @param objRef Pointer to this GetFeatureInfo object.
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* @param targetNode The node for the enclosing HTML tag for this widget.
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*/
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this.doAction = function(objRef,targetNode) {
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if (objRef.enabled) {
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var selectedLayer=objRef.context.getParam("selectedLayer");
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if (selectedLayer==null) {
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alert("Query layer not selected, select a queryable layer in the Legend.");
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}
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else {
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// objRef.xsl.setParameter("FORMAT", "text/html");
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objRef.xsl.setParameter("queryLayer", selectedLayer);
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objRef.xsl.setParameter("xCoord", targetNode.evpl[0]);
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objRef.xsl.setParameter("yCoord", targetNode.evpl[1]);
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objRef.xsl.setParameter("infoFormat", objRef.infoFormat);
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objRef.xsl.setParameter("featureCount", "1");
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urlNode=objRef.xsl.transformNodeToObject(objRef.context.doc);
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//alert(urlNode);
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url=urlNode.documentElement.firstChild.nodeValue;
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//alert("GetFeatureInfo .. : \n url="+url);
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if (objRef.infoFormat=="text/html"){
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window.open(url,'queryWin','height=200,width=300,scrollbars=yes');
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}
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}
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}
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}
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/**
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* Register for mouseUp events.
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* @param objRef Pointer to this object.
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*/
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this.setMouseListener = function(objRef) {
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if (objRef.mouseHandler) {
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objRef.mouseHandler.model.addListener('mouseup',objRef.doAction,objRef);
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}
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objRef.context=objRef.widgetNode.selectSingleNode("mb:context");
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if (objRef.context){
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objRef.context=eval("config.objects."+objRef.context.firstChild.nodeValue);
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}
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}
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config.addListener( "loadModel", this.setMouseListener, this );
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}
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