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/*
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: WidgetBaseXSL.js 3892 2008-02-29 18:21:12Z ahocevar $
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*/
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mapbuilder.loadScript(baseDir+"/widget/WidgetBase.js");
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/**
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* Base Class for widgets. Associates a node on the page with a stylesheet and
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* model. All widgets must extend this base class.
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* Defines the default paint() method for all widgets which is where the
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* stylesheet is applied to the model XML document.
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* To override widget.paint(), define it before calling this constructor.
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* The stylesheet URL defaults to "widget/<widgetName>.xsl" if it is not defined
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* in config file. Set a stylesheet property containing an XSL URL in config
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* to customize the stylesheet used.
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* All stylesheets will have "modelId" and "widgetId" parameters set when called.
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*
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* @constructor
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* @base WidgetBase
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* @author Mike Adair
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* @param widget Pointer to the widget instance being created
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* @param widgetNode The widget's XML object node from the configuration document.
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* @param model The model object that this widget belongs to.
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*/
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function WidgetBaseXSL(widgetNode,model) {
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// Extend WidgetBase
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WidgetBase.apply(this, new Array(widgetNode, model));
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// Set this.stylesheet
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// Defaults to "widget/<widgetName>.xsl" if not defined in config file.
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if ( !this.stylesheet ) {
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this.stylesheet = new XslProcessor(this.getProperty("mb:stylesheet", baseDir+"/widget/"+widgetNode.nodeName+".xsl", model.namespace));
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}
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// Do we allow to parse HTML nodes?
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this.parseHTMLNodes = Mapbuilder.parseBoolean(this.getProperty("mb:parseHTMLNodes", false));
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// Set widget text values as parameters
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if (config.widgetText) {
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var textNodeXpath = "/mb:WidgetText/mb:widgets/mb:" + widgetNode.nodeName;
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var textParams = config.widgetText.selectNodes(textNodeXpath+"/*");
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for (var j=0;j<textParams.length;j++) {
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this.stylesheet.setParameter(textParams[j].nodeName,getNodeValue(textParams[j]));
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}
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}
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// Set stylesheet parameters for all the child nodes from the config file
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for (var j=0;j<widgetNode.childNodes.length;j++) {
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if (widgetNode.childNodes[j].firstChild)
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{
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this.stylesheet.setParameter(
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widgetNode.childNodes[j].nodeName, widgetNode.childNodes[j].firstChild.nodeValue);
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}
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}
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//all stylesheets will have these properties available
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this.stylesheet.setParameter("modelId", this.model.id );
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this.stylesheet.setParameter("modelTitle", this.model.title );
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this.stylesheet.setParameter("widgetId", this.id );
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this.stylesheet.setParameter("skinDir", config.skinDir );
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this.stylesheet.setParameter("lang", config.lang );
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/**
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* Render the widget.
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* @param objRef Pointer to widget object.
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*/
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this.paint = function(objRef, refreshId) {
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//pass in a widget ID to refresh only that widget
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if (refreshId && (refreshId!=objRef.id)) return;
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if (objRef.model.doc && objRef.getNode()) {
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objRef.stylesheet.setParameter("modelUrl", objRef.model.url);
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objRef.stylesheet.setParameter("targetModelId", objRef.targetModel.id );
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//if (objRef.debug) mbDebugMessage(objRef, "source:"+(new XMLSerializer()).serializeToString(objRef.model.doc));
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objRef.resultDoc = objRef.model.doc; // resultDoc sometimes modified by prePaint()
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objRef.model.setParam("prePaint", objRef);
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objRef.prePaint(objRef);
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//confirm inputs
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if (objRef.debug) mbDebugMessage(objRef, "prepaint:"+(new XMLSerializer()).serializeToString(objRef.resultDoc));
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if (objRef.debug) mbDebugMessage(objRef, "stylesheet:"+(new XMLSerializer()).serializeToString(objRef.stylesheet.xslDom));
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//set to output to a temporary node
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//hack to get by doc parsing problem in IE
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//the firstChild of tempNode will be the root element output by the stylesheet
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var outputNode = document.getElementById( objRef.outputNodeId );
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var tempNode = document.createElement("DIV");
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//process the doc with the stylesheet
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var s = objRef.stylesheet.transformNodeToString(objRef.resultDoc);
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if (config.serializeUrl && objRef.debug) postLoad(config.serializeUrl, s);
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if (objRef.debug) mbDebugMessage(objRef, "painting:"+objRef.id+":"+s);
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tempNode.innerHTML = objRef.parseHTMLNodes ? Sarissa.unescape(s) : s;
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if( tempNode.firstChild != null ) { //Could be null!
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tempNode.firstChild.setAttribute("id", objRef.outputNodeId);
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//look for this widgets output and replace if found,
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//otherwise append it
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if (outputNode) {
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objRef.getNode().replaceChild(tempNode.firstChild,outputNode);
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} else {
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objRef.getNode().appendChild(tempNode.firstChild);
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}
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}
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objRef.postPaint(objRef);
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objRef.model.setParam("postPaint", objRef);
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}
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}
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// Call paint when model changes
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this.model.addListener("refresh",this.paint, this);
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}
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