338 lines
11 KiB
JavaScript
338 lines
11 KiB
JavaScript
/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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// a host environment specifically built for Mozilla extensions, but derived
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// from the browser host environment
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if(typeof window != 'undefined'){
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dojo.isBrowser = true;
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dojo._name = "browser";
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// FIXME: PORTME
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// http://developer.mozilla.org/en/mozIJSSubScriptLoader
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// attempt to figure out the path to dojo if it isn't set in the config
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(function(){
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var d = dojo;
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// this is a scope protection closure. We set browser versions and grab
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// the URL we were loaded from here.
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// FIXME: need to probably use a different reference to "document" to get the hosting XUL environment
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d.baseUrl = d.config.baseUrl;
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// fill in the rendering support information in dojo.render.*
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var n = navigator;
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var dua = n.userAgent;
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var dav = n.appVersion;
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var tv = parseFloat(dav);
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d.isMozilla = d.isMoz = tv;
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if(d.isMoz){
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d.isFF = parseFloat(dua.split("Firefox/")[1]) || undefined;
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}
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// FIXME
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d.isQuirks = document.compatMode == "BackCompat";
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// FIXME
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// TODO: is the HTML LANG attribute relevant?
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d.locale = dojo.config.locale || n.language.toLowerCase();
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d._xhrObj = function(){
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return new XMLHttpRequest();
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}
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// monkey-patch _loadUri to handle file://, chrome://, and resource:// url's
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var oldLoadUri = d._loadUri;
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d._loadUri = function(uri, cb){
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var handleLocal = ["file:", "chrome:", "resource:"].some(function(prefix){
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return String(uri).indexOf(prefix) == 0;
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});
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if(handleLocal){
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// see:
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// http://developer.mozilla.org/en/mozIJSSubScriptLoader
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var l = Components.classes["@mozilla.org/moz/jssubscript-loader;1"]
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.getService(Components.interfaces.mozIJSSubScriptLoader);
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var value = l.loadSubScript(uri, d.global)
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if(cb){ cb(value); }
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return true;
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}else{
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// otherwise, call the pre-existing version
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return oldLoadUri.apply(d, arguments);
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}
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}
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// FIXME: PORTME
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d._isDocumentOk = function(http){
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var stat = http.status || 0;
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return (stat >= 200 && stat < 300) || // Boolean
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stat == 304 || // allow any 2XX response code
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stat == 1223 || // get it out of the cache
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(!stat && (location.protocol=="file:" || location.protocol=="chrome:") );
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}
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// FIXME: PORTME
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// var owloc = window.location+"";
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// var base = document.getElementsByTagName("base");
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// var hasBase = (base && base.length > 0);
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var hasBase = false;
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d._getText = function(/*URI*/ uri, /*Boolean*/ fail_ok){
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// summary: Read the contents of the specified uri and return those contents.
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// uri:
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// A relative or absolute uri. If absolute, it still must be in
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// the same "domain" as we are.
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// fail_ok:
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// Default false. If fail_ok and loading fails, return null
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// instead of throwing.
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// returns: The response text. null is returned when there is a
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// failure and failure is okay (an exception otherwise)
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// alert("_getText: " + uri);
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// NOTE: must be declared before scope switches ie. this._xhrObj()
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var http = d._xhrObj();
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if(!hasBase && dojo._Url){
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uri = (new dojo._Url(uri)).toString();
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}
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if(d.config.cacheBust){
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//Make sure we have a string before string methods are used on uri
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uri += "";
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uri += (uri.indexOf("?") == -1 ? "?" : "&") + String(d.config.cacheBust).replace(/\W+/g,"");
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}
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var handleLocal = ["file:", "chrome:", "resource:"].some(function(prefix){
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return String(uri).indexOf(prefix) == 0;
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});
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if(handleLocal){
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// see:
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// http://forums.mozillazine.org/viewtopic.php?p=921150#921150
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var ioService = Components.classes["@mozilla.org/network/io-service;1"]
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.getService(Components.interfaces.nsIIOService);
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var scriptableStream=Components
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.classes["@mozilla.org/scriptableinputstream;1"]
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.getService(Components.interfaces.nsIScriptableInputStream);
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var channel = ioService.newChannel(uri, null, null);
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var input = channel.open();
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scriptableStream.init(input);
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var str = scriptableStream.read(input.available());
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scriptableStream.close();
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input.close();
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return str;
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}else{
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http.open('GET', uri, false);
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try{
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http.send(null);
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// alert(http);
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if(!d._isDocumentOk(http)){
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var err = Error("Unable to load "+uri+" status:"+ http.status);
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err.status = http.status;
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err.responseText = http.responseText;
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throw err;
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}
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}catch(e){
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if(fail_ok){ return null; } // null
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// rethrow the exception
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throw e;
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}
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return http.responseText; // String
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}
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}
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d._windowUnloaders = [];
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// FIXME: PORTME
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d.windowUnloaded = function(){
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// summary:
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// signal fired by impending window destruction. You may use
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// dojo.addOnWIndowUnload() or dojo.connect() to this method to perform
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// page/application cleanup methods. See dojo.addOnWindowUnload for more info.
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var mll = d._windowUnloaders;
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while(mll.length){
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(mll.pop())();
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}
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}
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// FIXME: PORTME
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d.addOnWindowUnload = function(/*Object?*/obj, /*String|Function?*/functionName){
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// summary:
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// registers a function to be triggered when window.onunload fires.
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// Be careful trying to modify the DOM or access JavaScript properties
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// during this phase of page unloading: they may not always be available.
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// Consider dojo.addOnUnload() if you need to modify the DOM or do heavy
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// JavaScript work.
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// example:
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// | dojo.addOnWindowUnload(functionPointer)
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// | dojo.addOnWindowUnload(object, "functionName")
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// | dojo.addOnWindowUnload(object, function(){ /* ... */});
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d._onto(d._windowUnloaders, obj, functionName);
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}
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// XUL specific APIs
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var contexts = [];
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var current = null;
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dojo._defaultContext = [ window, document ];
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dojo.pushContext = function(/*Object|String?*/g, /*MDocumentElement?*/d){
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// summary:
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// causes subsequent calls to Dojo methods to assume the
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// passed object and, optionally, document as the default
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// scopes to use. A 2-element array of the previous global and
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// document are returned.
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// description:
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// dojo.pushContext treats contexts as a stack. The
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// auto-detected contexts which are initially provided using
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// dojo.setContext() require authors to keep state in order to
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// "return" to a previous context, whereas the
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// dojo.pushContext and dojo.popContext methods provide a more
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// natural way to augment blocks of code to ensure that they
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// execute in a different window or frame without issue. If
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// called without any arguments, the default context (the
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// context when Dojo is first loaded) is instead pushed into
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// the stack. If only a single string is passed, a node in the
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// intitial context's document is looked up and its
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// contextWindow and contextDocument properties are used as
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// the context to push. This means that iframes can be given
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// an ID and code can be executed in the scope of the iframe's
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// document in subsequent calls easily.
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// g:
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// The global context. If a string, the id of the frame to
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// search for a context and document.
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// d:
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// The document element to execute subsequent code with.
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var old = [dojo.global, dojo.doc];
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contexts.push(old);
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var n;
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if(!g && !d){
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n = dojo._defaultContext;
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}else{
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n = [ g, d ];
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if(!d && dojo.isString(g)){
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var t = document.getElementById(g);
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if(t.contentDocument){
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n = [t.contentWindow, t.contentDocument];
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}
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}
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}
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current = n;
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dojo.setContext.apply(dojo, n);
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return old; // Array
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};
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dojo.popContext = function(){
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// summary:
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// If the context stack contains elements, ensure that
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// subsequent code executes in the *previous* context to the
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// current context. The current context set ([global,
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// document]) is returned.
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var oc = current;
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if(!contexts.length){
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return oc;
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}
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dojo.setContext.apply(dojo, contexts.pop());
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return oc;
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};
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// FIXME:
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// don't really like the current arguments and order to
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// _inContext, so don't make it public until it's right!
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dojo._inContext = function(g, d, f){
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var a = dojo._toArray(arguments);
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f = a.pop();
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if(a.length == 1){
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d = null;
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}
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dojo.pushContext(g, d);
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var r = f();
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dojo.popContext();
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return r;
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};
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})();
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dojo._initFired = false;
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// BEGIN DOMContentLoaded, from Dean Edwards (http://dean.edwards.name/weblog/2006/06/again/)
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dojo._loadInit = function(e){
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dojo._initFired = true;
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// allow multiple calls, only first one will take effect
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// A bug in khtml calls events callbacks for document for event which isnt supported
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// for example a created contextmenu event calls DOMContentLoaded, workaround
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var type = (e && e.type) ? e.type.toLowerCase() : "load";
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if(arguments.callee.initialized || (type != "domcontentloaded" && type != "load")){ return; }
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arguments.callee.initialized = true;
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if(dojo._inFlightCount == 0){
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dojo._modulesLoaded();
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}
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}
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/*
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(function(){
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var _w = window;
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var _handleNodeEvent = function(evtName, fp){
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// summary:
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// non-destructively adds the specified function to the node's
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// evtName handler.
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// evtName: should be in the form "onclick" for "onclick" handlers.
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// Make sure you pass in the "on" part.
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var oldHandler = _w[evtName] || function(){};
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_w[evtName] = function(){
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fp.apply(_w, arguments);
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oldHandler.apply(_w, arguments);
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};
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};
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// FIXME: PORT
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// FIXME: dojo.unloaded requires dojo scope, so using anon function wrapper.
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_handleNodeEvent("onbeforeunload", function() { dojo.unloaded(); });
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_handleNodeEvent("onunload", function() { dojo.windowUnloaded(); });
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})();
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*/
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// FIXME: PORTME
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// this event fires a lot, namely for all plugin XUL overlays and for
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// all iframes (in addition to window navigations). We only want
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// Dojo's to fire once..but we might care if pages navigate. We'll
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// probably need an extension-specific API
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if(!dojo.config.afterOnLoad){
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window.addEventListener("DOMContentLoaded",function(e){
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dojo._loadInit(e);
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// console.log("DOM content loaded", e);
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}, false);
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}
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} //if (typeof window != 'undefined')
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//Register any module paths set up in djConfig. Need to do this
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//in the hostenvs since hostenv_browser can read djConfig from a
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//script tag's attribute.
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(function(){
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var mp = dojo.config["modulePaths"];
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if(mp){
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for(var param in mp){
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dojo.registerModulePath(param, mp[param]);
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}
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}
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})();
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//Load debug code if necessary.
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if(dojo.config.isDebug){
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// logging stub for extension logging
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console.log = function(m){
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var s = Components.classes["@mozilla.org/consoleservice;1"].getService(
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Components.interfaces.nsIConsoleService
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);
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s.logStringMessage(m);
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}
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console.debug = function(){
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console.log(dojo._toArray(arguments).join(" "));
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}
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// FIXME: what about the rest of the console.* methods? And is there any way to reach into firebug and log into it directly?
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}
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