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/*
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id$
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*/
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/**
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* Records a log of events that occur over the course of mapbuilder execution
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* @constructor
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* @base ModelBase
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* @author Mike Adair
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* @param modelNode Pointer to the xml node for this model from the config file.
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* @param parent The parent model for the object.
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*/
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function Logger(modelNode, parent) {
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// Inherit the ModelBase functions and parameters
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ModelBase.apply(this, new Array(modelNode, parent));
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this.namespace = "xmlns:mb='http://mapbuilder.sourceforge.net/mapbuilder'";
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//create a new document
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this.doc = Sarissa.getDomDocument("http://mapbuilder.sourceforge.net/mapbuilder","mb:Logger");//!no prefix on the URL
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Sarissa.setXpathNamespaces(this.doc, this.namespace);
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this.doc.async = false;
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this.doc.validateOnParse=false; //IE6 SP2 parsing bug
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/**
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* appends a new entry in the log file
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* @param evenType the name of the event that occured
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* @param listenerId the ID of the listener object
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* @param targetId the ID of the object passed to the listener function
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* @param paramValue any parameter info supplied to the listener function
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*/
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this.logEvent = function(eventType, listenerId, targetId, paramValue) {
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var eventLog = this.doc.createElement("event");
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eventLog.setAttribute("time", new Date().getTime());
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eventLog.setAttribute("listener", listenerId);
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eventLog.setAttribute("target", targetId);
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if (paramValue) eventLog.setAttribute("param", paramValue);
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eventLog.appendChild(this.doc.createTextNode(eventType));
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this.doc.documentElement.appendChild(eventLog);
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}
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/**
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* clears all entries in the log file
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*/
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this.clearLog = function() {
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while (this.doc.documentElement.hasChildNodes() ) {
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this.doc.documentElement.removeChild(this.doc.documentElement.firstChild);
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}
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this.callListeners("refresh");
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}
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/**
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* save the log by http post to the serializeUrl URL provided
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*/
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this.saveLog = function() {
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if (config.serializeUrl) {
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var tempDoc = postLoad(config.serializeUrl,logger.doc);
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tempDoc.setProperty("SelectionLanguage", "XPath");
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Sarissa.setXpathNamespaces(tempDoc, "xmlns:xlink='http://www.w3.org/1999/xlink'");
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var onlineResource = tempDoc.selectSingleNode("//OnlineResource");
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var fileUrl = onlineResource.attributes.getNamedItem("xlink:href").nodeValue;
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alert("event log saved as:" + fileUrl);
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} else {
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alert("unable to save event log; provide a serializeUrl property in config");
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}
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}
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/**
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* save the log by http post to the serializeUrl URL provided
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*/
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this.refreshLog = function(objRef) {
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objRef.callListeners("refresh");
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}
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if (parent) parent.addListener("refresh",this.refreshLog, this);
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window.onunload = this.saveLog; //automatically save the log when the page unloads
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window.logger = this; //global reference to the logger model
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}
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