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/*
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: Config.js 3893 2008-02-29 18:22:13Z ahocevar $
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*/
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// Ensure this object's dependancies are loaded.
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mapbuilder.loadScript(baseDir+"/model/ModelBase.js");
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/**
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* The config object is the parent model of all mapbuilder objects.
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* The application creates a global object called 'config' which represents
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* the mapbuilder configuration xml file passed in as a parameter.
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* Config is a model like any other model.
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* Any mapbuilder object can be de-referenced by using the 'config.objects'
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* property as in config.objects.idValueFromConfig.
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* The schema for the config can be found at /mabuilder/lib/schemas/config.xsd
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*
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* @constructor
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* @base ModelBase
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* @author adair
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* @requires Sarissa
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* @param url URL of the configuration file.
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*/
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function Config(url) {
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/**
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* open the application specific configuration document, passed in aas the url argument.
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*/
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this.doc = Sarissa.getDomDocument();
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this.doc.async = false;
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this.doc.validateOnParse=false; //IE6 SP2 parsing bug
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if(_SARISSA_IS_SAFARI)
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{
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var xmlhttp = new XMLHttpRequest();
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xmlhttp.open("GET", url, false);
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xmlhttp.send(null);
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this.doc = xmlhttp.responseXML;
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}else
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{
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this.doc.load(url);
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}
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if (Sarissa.getParseErrorText(this.doc) != Sarissa.PARSED_OK){
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alert("error loading config document: " + url );//+ " - " + Sarissa.getParseErrorText(this.doc) );
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}
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this.url = url;
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this.namespace = "xmlns:mb='"+mbNsUrl+"'";
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if(! _SARISSA_IS_SAFARI ){
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this.doc.setProperty("SelectionLanguage", "XPath");
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Sarissa.setXpathNamespaces(this.doc, this.namespace);}
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/**
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* Set the serializeUrl and proxyUrl values from a global configuration document
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* Optional, these can also be set in individual config docs.
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*/
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var configDoc = Sarissa.getDomDocument();
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configDoc.async = false;
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configDoc.validateOnParse=false; //IE6 SP2 parsing bug
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if(_SARISSA_IS_SAFARI){
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var xmlhttp = new XMLHttpRequest();
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xmlhttp.open("GET", baseDir+"/"+mbServerConfig, false);
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xmlhttp.send(null);
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configDoc = xmlhttp.responseXML;
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}else
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{
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configDoc.load(baseDir+"/"+mbServerConfig);
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}
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if (Sarissa.getParseErrorText(configDoc) != Sarissa.PARSED_OK) {
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//alert("error loading server config document: " + baseDir+"/"+mbServerConfig );
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} else {
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if(! _SARISSA_IS_SAFARI ){
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configDoc.setProperty("SelectionLanguage", "XPath");
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Sarissa.setXpathNamespaces(configDoc, this.namespace);
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}
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this.proxyUrl = Mapbuilder.getProperty(configDoc, "/mb:MapbuilderConfig/mb:proxyUrl", this.proxyUrl);
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this.serializeUrl = Mapbuilder.getProperty(configDoc, "/mb:MapbuilderConfig/mb:serializeUrl", this.serializeUrl);
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}
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configDoc = null;
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/**
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* Dynamic loading of the javascript files for objects defined in the Config file.
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* @private
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*/
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this.loadConfigScripts=function(){
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// load css stylesheets that were requested before skindir was known.
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if (mapbuilder.cssToLoad) {
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for (var i=0; i<mapbuilder.cssToLoad.length; i++) {
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loadCss(mapbuilder.cssToLoad[i]);
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}
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mapbuilder.cssToLoad = null;
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}
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// Load script files for all components that don't have <scriptfile> specified
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// in the config file.
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mapbuilder.loadScriptsFromXpath(this.doc.selectNodes("//mb:models/*"),"model/");
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mapbuilder.loadScriptsFromXpath(this.doc.selectNodes("//mb:widgets/*"),"widget/");
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mapbuilder.loadScriptsFromXpath(this.doc.selectNodes("//mb:tools/*"),"tool/");
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//TBD: Deprecate the following block and move into loadScriptsFromXpath instead.
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//load all scriptfiles called for in the config file. There seems to be a
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//problem if this is done anywhere except in the page <HEAD> element.
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var scriptFileNodes = this.doc.selectNodes("//mb:scriptFile");
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for (var i=0; i<scriptFileNodes.length; i++ ) {
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scriptFile = getNodeValue(scriptFileNodes[i]);
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mapbuilder.loadScript(scriptFile);
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}
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}
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/**
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* multilingual support; defaults to english
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* Set via a "language" parameter in the URL,
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* or by setting a global "language" Javascript variable in the page <HEAD>.
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* Retrieve the language value from the global conifg object as "config.lang"
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*/
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this.defaultLang = "en";
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this.lang = this.defaultLang;
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if (window.cgiArgs["language"]) {
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this.lang = window.cgiArgs["language"];
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} else if (window.language) {
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this.lang = window.language;
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}
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//set some global application properties
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var modelNode = this.doc.documentElement;
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this.skinDir = Mapbuilder.getProperty(modelNode, "mb:skinDir");
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this.proxyUrl = Mapbuilder.getProperty(modelNode, "mb:proxyUrl", this.proxyUrl);
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this.serializeUrl = Mapbuilder.getProperty(modelNode, "mb:serializeUrl", this.serializeUrl);
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/**
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* Convenience method to load widgetText from a dir.
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* Has the possible side-effect of changing config.lang to config.defaultLang
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* if the widgetText for the selected language is not found.
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* @param config the config object
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* @param dir the base dir for the widget text
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* @private
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*/
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function loadWidgetText(config, dir) {
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var widgetFile = "/widgetText.xml";
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var widgetText;
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var widgetTextUrl = dir + "/" + config.lang + widgetFile;
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widgetText = Sarissa.getDomDocument();
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widgetText.async = false;
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widgetText.validateOnParse=false; //IE6 SP2 parsing bug
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if (typeof(inlineXSL)!="undefined") {
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var xmlString = inlineXSL[widgetTextUrl];
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xmlString = xmlString.replace(/DOUBLE_QUOTE/g,"\"");
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widgetText = (new DOMParser()).parseFromString(xmlString, "text/xml");
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}
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else {
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if (_SARISSA_IS_SAFARI) {
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var xmlhttp = new XMLHttpRequest();
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xmlhttp.open("GET", widgetTextUrl, false);
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xmlhttp.send(null);
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widgetText = xmlhttp.responseXML;
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}
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else {
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try {
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widgetText.load(widgetTextUrl);
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}
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catch (ignoredErr) {}
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}
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}
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if (Sarissa.getParseErrorText(widgetText) != Sarissa.PARSED_OK) {
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var errMsg = "Error loading widgetText document: " + widgetTextUrl;
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if (config.lang == config.defaultLang) {
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alert(errMsg);
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}
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else {
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// Try to fall back on default language
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alert(errMsg + "\nFalling back on default language=\"" + config.defaultLang + "\"");
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config.lang = config.defaultLang;
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widgetTextUrl = dir + "/" + config.lang + widgetFile;
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if(_SARISSA_IS_SAFARI) {
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var xmlhttp = new XMLHttpRequest();
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xmlhttp.open("GET", widgetTextUrl, false);
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xmlhttp.send(null);
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widgetText = xmlhttp.responseXML;
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}
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else {
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widgetText.load(widgetTextUrl);
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}
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if (Sarissa.getParseErrorText(widgetText) != Sarissa.PARSED_OK) {
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alert("Falling back on default language failed!");
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}
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}
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}
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if(! _SARISSA_IS_SAFARI) {
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widgetText.setProperty("SelectionLanguage", "XPath");
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Sarissa.setXpathNamespaces(widgetText, config.namespace);
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}
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return widgetText;
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}
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// Load widgetText
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this.widgetText = loadWidgetText(this, baseDir + "/text");
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// Try to load userWidgetText
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userWidgetTextDir = modelNode.selectSingleNode("mb:userWidgetTextDir");
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if (userWidgetTextDir) {
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var userWidgetText = loadWidgetText(this, getNodeValue(userWidgetTextDir));
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if (userWidgetText) {
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// User has specified userWidgetText, merge with widgetText
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var userWidgets = userWidgetText.selectSingleNode("/mb:WidgetText/mb:widgets");
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var configWidgets = this.widgetText.selectSingleNode("/mb:WidgetText/mb:widgets");
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if (userWidgets && configWidgets) {
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// Merge <widgets/> texts
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Sarissa.copyChildNodes(userWidgets, configWidgets, true);
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}
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var userMessages = userWidgetText.selectSingleNode("/mb:WidgetText/mb:messages");
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var configMessages = this.widgetText.selectSingleNode("/mb:WidgetText/mb:messages");
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if (userMessages && configMessages) {
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// Merge <messages/> texts
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Sarissa.copyChildNodes(userMessages, configMessages, true);
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}
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}
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}
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/**
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* the objects property holds a reference to every mapbuilder javascript object
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* created. Each object is added as a property of config.objects using the
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* value of the object id from the configuration file
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*/
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this.objects = new Object();
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// Inherit the ModelBase functions and parameters
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ModelBase.apply(this, new Array(modelNode));
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/**
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* Load a model and its child models, widgets and tools.
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* This function can be called at any time to load a new model or replace an
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* existing model object.
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* @param modelId the id of the model in config XML to be updated
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* @param modelUrl URL of the XML model document to be loaded
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*/
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this.loadModel = function( modelId, modelUrl ) {
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var model = this.objects[modelId];
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if (model && modelUrl) {
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var httpPayload = new Object();
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httpPayload.method = model.method;
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httpPayload.url = modelUrl;
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model.newRequest(model,httpPayload);
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} else {
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alert(mbGetMessage("errorLoadingModel", modelId, modelUrl));
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}
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}
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/**
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* Repaint the widget passed in.
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* This function can be called at any time to paint the widget.
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* @param widget a pointer to the widget object to be painted.
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*/
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this.paintWidget = function( widget ) {
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if (widget) {
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widget.paint(widget, widget.id);
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} else {
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alert(mbGetMessage("errorPaintingWidget"));
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}
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}
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}
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/**
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* Initialise the global config object for Mozilla browsers.
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*/
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if (document.readyState==null){
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// Mozilla
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mapbuilder.setLoadState(MB_LOAD_CONFIG);
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config=new Config(mbConfigUrl);
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config[config.id] = config;
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config.loadConfigScripts();
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}
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