// +--------------------------------------------------------------------------+
// | BXE                                                                      |
// +--------------------------------------------------------------------------+
// | Copyright (c) 2003,2004 Bitflux GmbH                                     |
// +--------------------------------------------------------------------------+
// | Licensed under the Apache License, Version 2.0 (the "License");          |
// | you may not use this file except in compliance with the License.         |
// | You may obtain a copy of the License at                                  |
// |     http://www.apache.org/licenses/LICENSE-2.0                           |
// | Unless required by applicable law or agreed to in writing, software      |
// | distributed under the License is distributed on an "AS IS" BASIS,        |
// | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
// | See the License for the specific language governing permissions and      |
// | limitations under the License.                                           |                      
// +--------------------------------------------------------------------------+
// | Author: Christian Stocker <chregu@bitflux.ch>                            |
// +--------------------------------------------------------------------------+
//
// $Id: bxeLoader.js 1668 2007-05-04 09:05:56Z chregu $

var BXE_VERSION = "1.1.0-dev";
var BXE_BUILD = "200705041105"
var BXE_REVISION = "$Rev: 1668 $".replace(/\$Rev: ([0-9]+) \$/,"r$1");

var bxe_notSupportedText = "Bitflux Editor only works with Mozilla >= 1.4 / Firefox on any platform. \nCurrently we recommend Mozilla 1.6 or Firefox 1.0.";

if (window.location.protocol == "file:" || window.location.host.match(/localhost.*/)) {
	var DebugOutput = false;
} else {
	var DebugOutput = false;
}

mozile_js_files = new Array();

mozile_js_files.push("mozile/mozWrappers.js");
mozile_js_files.push("js/widget.js");

mozile_js_files.push("mozile/eDOM.js");
mozile_js_files.push("js/bxeConfig.js");
mozile_js_files.push("mozile/eDOMXHTML.js");
mozile_js_files.push("js/bxeXMLNode.js");
mozile_js_files.push("js/bxeNodeElements.js");
mozile_js_files.push("js/bxeXMLDocument.js");
mozile_js_files.push("mozile/mozileTransportDriver.js");
mozile_js_files.push("mozile/td/http.js");
mozile_js_files.push("mozile/domlevel3.js");
mozile_js_files.push("mozile/mozCE.js");
mozile_js_files.push("mozile/mozIECE.js");
//mozile_js_files.push("mozile/mozileModify.js");
mozile_js_files.push("js/eDOMEvents.js");
mozile_js_files.push("js/bxeFunctions.js");


var mozile_root_dir = "./";

// some global vars, no need to change them
var mozile_corescript_loaded = 0;
var bxe_plugin_script_loaded_counter  = 0;
var mozile_script_loaded = 0;
var bxe_config = new Object();
var bxe_about_box = null;
var bxe_format_list = null;
var bxe_toolbar = null;
var bxe_menubar = null;
var bxe_context_menu = null;
var bxe_widgets_drawn = false;
var bxe_plugins = new Array();

var bxe_delayedUpdate = false;
var eDOM_bxe_mode = true; 
var bxe_editable_page = true;
var bxe_lastSavedXML = null;

var startTimer = new Date();

function bxe_start(config_file,fromUrl, configArray) {
	
	/*if (! (BX_checkUnsupportedBrowsers())) {
		return false;
	}*/
	if((navigator.product == 'Gecko') && (navigator.userAgent.indexOf("Safari") == -1))
	{
		if ( !bxe_checkSupportedBrowsers()) {
			alert(bxe_notSupportedText + "\n" + "If you think, your browser does meet this criteria, please report it to bx-editor-dev@lists.bitflux.ch")
		}
		// navigator.productSub > '20020801' (test to see what the date should be)
		
		// POST04: if document.documentElement != HTML then ... or no "head" ...
		var head = document.getElementsByTagName("head")[0];
		bxe_config.file = config_file;
		bxe_config.fromUrl = fromUrl;
		bxe_config.configArray = configArray;
		if(head)
		{
			// get the location of this script and reuse it for the others
			for(var i=0; i<head.childNodes.length; i++)
			{
				var mozileLoaderRE = /(.*)bxeLoader.js$/;
				if(head.childNodes[i].localName == "SCRIPT")
				{
					var src = head.childNodes[i].src;
					var result = mozileLoaderRE.exec(src);
					if(result)
					{
						mozile_root_dir = result[1];
						break;
					}
				}
			}
			for (var i=0; i < mozile_js_files.length; i++) 
			{
				var scr = document.createElementNS("http://www.w3.org/1999/xhtml","script");
				var src = mozile_root_dir + mozile_js_files[i];
				if (mozile_js_files[i] == "js/widget.js") {
					scr.onload = widget_loaded;
				} else {
					scr.onload = corescript_loaded;
				}
				scr.setAttribute("src", src);
				scr.setAttribute("language","JavaScript");
				head.appendChild(scr);
			}
			//when last include src is loaded, call onload handler
			
		}
		else {
			alert("*** ALERT: MozileLoader only works in (X)HTML - load Mozile JS explicitly in XML files");
		}
	} else {
		alert (bxe_notSupportedText);
	}
	
	
}

function bxe_saveOnPart(evt) { 
	if (bxe_checkChangedDocument()) {
		if (evt.type == 'beforeunload') {
			return "You have unsaved changes.\n Click cancel to return to the document.\n Click OK to really leave to page.";
		}
		else if (!confirm('You have unsaved changes.\n Are you sure you want to leave to page unsaved?\n Click OK for leaving the page and *NOT* saving \n Click Cancel for leaving the page and saving')) {
			eDOMEventCall("DocumentSave",document);
		}
	}
	
}

/*
* broken prototype implementation. see
* http://bugzilla.mozilla.org/show_bug.cgi?id=290777
*/
Text.prototype.__defineGetter__("bug290777_check",function() { return this.nodeValue;} )

function bxe_bug290777_check() {
	try {
		var text = document.createTextNode("foobar");
		
		var test = text.bug290777_check;
		text = null;
		return false;
	} catch (e) {
		return true;
	}
}

function bxe_checkSupportedBrowsers() {
	var mozillaRvVersion = navigator.userAgent.match(/rv:([[0-9a-z\.]*)/)[1];
	var mozillaRvVersionInt = parseFloat(mozillaRvVersion);
	
	if (mozillaRvVersionInt >= 1.4) {
		if (bxe_bug290777_check()) {
			alert ("You are using a Mozilla release with a broken prototype implementation.\nMozilla 1.7.7 and Firefox 1.0.3 are known to have this bug.\n Please up- or downgrade.");
			return true;
		}
		if (bxe_bug248172_check()) {
			alert ("You are using a Mozilla release with a broken XMLSerializer implementation.\n SAVE (and others) WILL NOT WORK!\nMozilla 1.7.x and Firefox 0.9.x are known to have this bug.\n Please up- or downgrade.");
		}
		//register beforeOnload handler
        if (mozillaRvVersionInt > 1.6) {
			window.onbeforeunload = bxe_saveOnPart;
        } else {
            window.addEventListener( 'unload', bxe_saveOnPart, false);
        };
		return true;
		
		
	}
	return false;
}
/*
* broken xml serializer. see
* http://bugzilla.mozilla.org/show_bug.cgi?id=248172
*/
function bxe_bug248172_check() {
	parser = new DOMParser();
	serializer = new XMLSerializer();

	parsedTree = parser.parseFromString('<xhtml:html xmlns:xhtml="http://www.w3.org/1999/xhtml"/>','text/xml');
	resultStr = serializer.serializeToString(parsedTree);
	if (resultStr.match(/xmlns:xhtml/)) {
		return false;
	} else {
		return true;
	}
	
}


function bxe_load_xml (xmlfile) {
	
	
	var td = new mozileTransportDriver(bxe_config.xmlfile_method);
	function callback (e) {
		if (e.isError) {
			alert("Error loading xml file \n"+e.statusText);
			return false;
		}
		var xmldoc =  e.document;
		bxe_config.xmldoc = xmldoc;
		xmldoc.init();
		if (bxe_config.xhtmlfile) {
			xmldoc.importXHTMLDocument(bxe_config.xhtmlfile)
		} else if (bxe_config.xslfile) {
			xmldoc.transformToXPathMode(bxe_config.xslfile)
		} else {
			xmldoc.insertIntoHTMLDocument();
			xml_loaded(xmldoc);
		}
	
	}
	td.load(xmlfile,callback);
	
	return true;
}

function widget_loaded(e) {
	bxe_about_box = new Widget_AboutBox();
	bxe_about_box.setText("Loading files ...");
	corescript_loaded(e);
	
}

function corescript_loaded(e) {
	mozile_corescript_loaded++;
	if ( mozile_js_files.length == mozile_corescript_loaded) {
		mozile_core_loaded();
	} else {
		if (bxe_about_box) {
			bxe_about_box.addText(mozile_corescript_loaded );
		}
	}
}


function bxe_plugin_script_loaded(e) {
	bxe_plugin_script_loaded_counter++;
	if ( bxe_plugin_scripts.length <= bxe_plugin_script_loaded_counter ) {
		 bxe_init_plugins();
	} else {
		//bxe_about_box.addText(bxe_plugin_script_loaded_counter );
	}
}

function script_loaded(e) {
	mozile_script_loaded++;
	if ( bxe_config.scriptfiles.length == mozile_script_loaded ) {
		mozile_loaded();
	} else {
		bxe_about_box.addText(mozile_script_loaded );
	}
}

function mozile_core_loaded() {
	bxe_about_box.addText("Scripts loaded ...");
	bxe_about_box.addText("Load Config ");
	try {
		bxe_config = new bxeConfig(bxe_config.file, bxe_config.fromUrl, bxe_config.configArray);
	} catch (e) {
		bxe_catch_alert(e);
	}
	bxe_about_box.show(false, bxe_config.options['showSplashScreen']);
}

function mozile_loaded() {
	defaultContainerName = "p";
	bxe_load_plugins();
	bxe_about_box.addText("Load XML ...");
	
	
	bxe_load_xml(bxe_config.xmlfile);
	//k_init();
}

function bxe_load_plugins() {
	var ps = bxe_config.getPlugins();
	
	if (ps.length > 0) {
		bxe_about_box.addText("Load Plugins");
		bxe_plugin_scripts = new Array();
		var head = document.getElementsByTagName("head")[0];
		for (var i = 0; i < ps.length; i++) {
			var p = eval ("new Bxe" + ps[i]);
			// load css
			var css = p.getCss();
			for (var j=0; j < css.length; j++) {
				var scr = document.createElementNS(XHTMLNS,"link");
				scr.setAttribute("type","text/css");
				scr.setAttribute("rel","stylesheet");
				if (css[j].substring(0,1) == "/" || css[j].indexOf("://") > 0) {
					var src = css[j];
				} else {
					var src = mozile_root_dir +css[j];
				}
				scr.setAttribute("href",src);
				head.appendChild(scr);
			}
			
			var js = p.getScripts();
			for (var j=0; j < js.length; j++) 
			{
				bxe_plugin_scripts.push(mozile_root_dir +js[j]);
			}
			
		}
		// load scripts
		if (bxe_plugin_scripts.length == 0) {
			bxe_plugin_script_loaded_counter--;
			bxe_plugin_script_loaded();
		} else {
			for (var i = 0; i < bxe_plugin_scripts.length; i++) {
				var scr = document.createElementNS("http://www.w3.org/1999/xhtml","script");
				scr.setAttribute("src", bxe_plugin_scripts[i]);
				scr.setAttribute("language","JavaScript");
				scr.onload = bxe_plugin_script_loaded;
				head.appendChild(scr);
			}
		}
	}
	
}

function bxe_init_plugins () {
	
	var ps = bxe_config.getPlugins();
	
	if (ps.length > 0) {
		for (var i = 0; i < ps.length; i++) {
			var p = eval ("new Bxe" + ps[i]);
			p.init(bxe_config.getPluginOptions(ps[i]));
			bxe_plugins[ps[i]] = p;
		}
	}
	bxe_about_box.addText("Plugins initialized");
}

function xml_loaded(xmldoc) {
	bxe_about_box.addText("Load RelaxNG " + bxe_config.validationfile + " ");
	if (!(bxe_config.validationfile && xmldoc.XMLNode.loadSchema(bxe_config.validationfile,validation_loaded))) {
		bxe_about_box.addText("RelaxNG File was not found");
	}
	bxe_history_snapshot();
	for (a in bxe_config.events ) {
		document.eDOMaddEventListener( a , eval(bxe_config.events[a] ), false);
	}
	document.eDOMaddEventListener("ClipboardCopy",function(e) { window.getSelection().copy()},false);
	document.eDOMaddEventListener("ClipboardPaste",function(e) { window.getSelection().paste()},false);
	document.eDOMaddEventListener("ClipboardCut",function(e) { window.getSelection().cut()},false);
	
	document.addEventListener("contextmenu",bxe_ContextMenuEvent, false);
	bxe_context_menu = new Widget_ContextMenu();
	
}

function validation_loaded(vdom) {
	bxe_about_box.addText("Validation Loaded ...");

	var vali = bxe_config.xmldoc.XMLNode.validateDocument();
	if (!vali) {
		bxe_about_box.addText("Document is *not* valid.");
		
	}
	else {
		bxe_about_box.addText("Document is valid.");
		bxe_lastSavedXML = bxe_getXmlDocument();
	}
	var endTimer = new Date();
	debug ("startTime: " + startTimer);
	debug ("endTime  : " + endTimer);
	dump ("Total Start Time: " + (endTimer - startTimer)/1000 + " sec\n"); 
}

function config_loaded(bxe_config_in) {
	bxe_about_box.addText("& Parsed ...");

	bxe_config = bxe_config_in;
	var btn = bxe_config.getButtons();
	
	//set button image location and begin preloading
	if (btn['_location']) {
		buttonImgLoc = btn['_location'];
	} else {
		buttonImgLoc = mozile_root_dir + "images/buttons.png";
	}
	var preloadthebutton = new Image();
	preloadthebutton.src = buttonImgLoc;
	
	var head = document.getElementsByTagName("head")[0];
	for (var i=0; i < bxe_config.cssfiles.length; i++) 
	{
		var scr = document.createElementNS(XHTMLNS,"link");
		scr.setAttribute("type","text/css");
		scr.setAttribute("rel","stylesheet");
		scr.setAttribute("href",bxe_config.cssfiles[i]);
		head.appendChild(scr);
	}
	
	for (var i=0; i < bxe_config.scriptfiles.length; i++) 
	{
		var scr = document.createElementNS("http://www.w3.org/1999/xhtml","script");
		if (bxe_config.scriptfiles[i].substr(0,1) == "/") {
			var src = bxe_config.scriptfiles[i];
		} else {
			var src = mozile_root_dir + bxe_config.scriptfiles[i];
		}
		scr.onload = script_loaded;
		scr.setAttribute("src", src);
		scr.setAttribute("language","JavaScript");
		head.appendChild(scr);
	}
}

debug = function (text, options) {
	
	if (DebugOutput) {
		
		fn =  bxe_getCaller(debug);

		dump( fn.getName() +  ": " + text + "\n");
		if (options) {
			
			if (options.evalArguments) {
				var fname= fn.getName();
					dump("  Arguments: (");
					for (var i = 0; i < fn.arguments.length; i++) {
						dump("[" + typeof fn.arguments[i] + "] "); 
						switch( typeof( fn.arguments[i] )) {
							case "function":
								dump (fn.arguments[i].getName());
								break;
							case "string":
								dump('"' + fn.arguments[i] + '"');
								break;
							default: 
								dump(fn.arguments[i]);
						}
						if (i < fn.arguments.length - 1 ) {
							dump(", ");
						}
					}
					dump (")\n");
				
			}
			
			if (options.callstack) {
				var callstack =  new Array();
				dump ("  Callstack: \n");
				dump ("  ----------\n");
				while (fn) {
					
					callstack.unshift(fn.getName() + "\n");
					var newfn = JsUtil_getCaller(fn);
					if (fn == newfn) {
						callstack.unshift ("  [javascript recursion]\n");
						break;
					}
					fn = newfn;
				}
				for (var i = 0; i < callstack.length; i++) {
					dump("  " +i +": " +callstack[i]);
				}
				dump ("  ----------\n");
				
			}

		}

	}
}

Function.prototype.getName = function () {
	var r = /function (\w*)([^\{\}]*\))/
	var s = new String( this);
	var m = s.match( r );
	if (m) {
		var f = "";
		if (m[1]) {
			f = m[1];
		} else {
			r = /var id = "(.+)"/;
			var n = s.match(r);
			if (n && n[1]) {
				f = n[1];
			} else {
				f = "anoynmous function";
			}
		}
		var args = m[2];
		return (f+args);
	} else {
		return "anonymous function";
	}
}

function bxe_getCaller( fn )
{
	switch( typeof( fn ))
	{
		case "undefined":
			return bxe_getCaller( bxe_getCaller );
			
		case "function":
			if( fn.caller )
				return fn.caller;
			if( fn.arguments && fn.arguments.caller )
				return fn.arguments.caller;
	}
	return undefined;
}