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/*
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: DeleteFeature.js 3879 2008-02-27 14:20:29Z gjvoosten $
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*/
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// Ensure this object's dependancies are loaded.
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mapbuilder.loadScript(baseDir+"/widget/ButtonBase.js");
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/**
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* When this button is pressed a WFS-T DeleteFeature transaction will be started.
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* @constructor
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* @base ButtonBase
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* @author Cameron Shorter
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* @param widgetNode The widget node from the Config XML file.
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* @param model The model for this widget
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*/
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function DeleteFeature(widgetNode, model) {
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// Extend ButtonBase
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ButtonBase.apply(this, new Array(widgetNode, model));
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// override default cursor by user
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// cursor can be changed by spefying a new cursor in config file
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this.cursor = "default";
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this.trm=this.getProperty("mb:transactionResponseModel");
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this.tm=this.getProperty("mb:targetModel");
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this.tc=this.getProperty("mb:targetContext");
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this.httpPayload=new Object();
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this.httpPayload.url=this.getProperty("mb:webServiceUrl");
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this.httpPayload.method="post";
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/** Xsl to convert Feature into a WFS Transaction Delete. */
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this.deleteXsl=new XslProcessor(baseDir+"/tool/xsl/wfs_Delete.xsl");
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/** creates the OL control for this button */
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this.createControl = function(objRef) {
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var Control = OpenLayers.Class(OpenLayers.Control, {
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CLASS_NAME: 'mbDeleteFeature',
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type: OpenLayers.Control.TYPE_BUTTON
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});
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return Control;
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}
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/**
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* Start a WFS-T DeleteFeature transaction.
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* @param objRef Pointer to this object.
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*/
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this.doSelect = function(objRef, selected) {
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if (selected){
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// Model that will be populated with the WFS response.
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if (!objRef.transactionResponseModel){
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objRef.transactionResponseModel=window.config.objects[objRef.trm];
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objRef.transactionResponseModel.addListener("loadModel",objRef.handleResponse, objRef);
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}
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if (!objRef.targetModel){
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objRef.targetModel=window.config.objects[objRef.tm];
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}
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if (!objRef.targetContext){
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objRef.targetContext=window.config.objects[objRef.tc];
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}
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fid=objRef.targetModel.getXpathValue(objRef.targetModel,"//@fid");
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//if fid exists, then we are deleting an existing feature.
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if (objRef.targetModel.doc && fid){
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s=objRef.deleteXsl.transformNodeToObject(objRef.targetModel.doc);
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objRef.httpPayload.postData=s;
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objRef.transactionResponseModel.transactionType="delete";
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objRef.transactionResponseModel.newRequest(objRef.transactionResponseModel,objRef.httpPayload);
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}else alert(mbGetMessage("noFeatureToDelete"));
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}
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}
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/**
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* If transaction was sucessful, refresh the map and remove contents of
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* FeatureList. This function is called after the TransactionResponseModel
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* has been updated.
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* @param objRef Pointer to this object.
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*/
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this.handleResponse=function(objRef){
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if (objRef.transactionResponseModel.transactionType=="delete") {
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success=objRef.transactionResponseModel.doc.selectSingleNode("//wfs:TransactionResult/wfs:Status/wfs:SUCCESS");
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if (success){
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// Remove FeatureList if feature entry was successful.
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objRef.targetModel.setModel(objRef.targetModel,null);
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// Repaint GmlRenderers
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objRef.targetModel.callListeners("refreshGmlRenderers");
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// Repaint the WMS layers
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objRef.targetContext.callListeners("refreshWmsLayers");
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}
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}
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}
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}
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