//-------------------------------------------------------------
//	Created by: Ionel Alexandru 
//	Mail: ionel.alexandru@gmail.com
//	Site: www.fmath.info
//---------------------------------------------------------------

var nbFlash = 0;
var flashMathML = new Array();
var textToEdit = "";
var idToEdit = "editML";
var urlF="";
var urlGrapfF="";
var urlGrapfEditF = "";	

String.prototype.trim = function(){ return this.replace(/^\s+|\s+$/g,'');}

function searchAndReplace(localUrl){
	urlF = localUrl + "/mathmlViewer.swf";
	urlGrapfF = localUrl + "/graph.swf";	
	urlGrapfEditF = localUrl + "/graphEdit.swf";	
	var list=document.getElementsByTagName("m:math");
	replaceAllTags(list)
	list=document.getElementsByTagName("math");
	replaceAllTags(list);
	list=document.getElementsByTagName("latex");
	replaceAllTags(list);
}

function replaceAllTags(list){
	var size = list.length;
	for(var i=0; i<size;i++){
		replaceTag(list[0]);
	}
}


function replaceTag(mathmlTag){
	if(mathmlTag==null) return;
	// delete attributes class and id
	deleteAttributesForNode(mathmlTag);
	
	var mathmlText = getMathMLString(mathmlTag.parentNode.innerHTML);
	nbFlash =nbFlash + 1;
	
	var fVars = "n=1";
	var parent = mathmlTag.parentNode;
	var menu = parent.getAttribute("menuType");
	if(menu!=null){
		fVars = fVars + "&menuType=true";
	}
	var color = parent.getAttribute("defaultColor");
	if(color!=null){
		fVars = fVars + "&defaultColor="+color;
	}
	var bgcolor = parent.getAttribute("defaultBackground");
	if(bgcolor!=null){
		fVars = fVars + "&defaultBackground="+bgcolor;
	}
	var size = parent.getAttribute("defaultSize");
	if(size!=null){
		fVars = fVars + "&defaultSize="+size;
	}
	var font = parent.getAttribute("defaultFont");
	if(font!=null){
		fVars = fVars + "&defaultFont="+font;
	}

	var id = parent.getAttribute("id");
	if(id==null || id==""){
		id = "F" + nbFlash;
	}
	fVars = "htmlId=" + id+"&" + fVars;
	parent.setAttribute("id", "Div" + id);
	
	parent.style.width=10;
	parent.style.height=10;
	parent.innerHTML = getFlash(urlF, '10', '10', id, fVars);

	parent.style.display="inline-block";
	parent.style.zIndex=0;
	flashMathML[id] = mathmlText;
}

function getMathML(name){
	return flashMathML[name];
}
	
	
function getFlash(flashUrl, w, h, name, vars){
	return '<OBJECT classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" name="'+name+'" id="'+name+'" width="'+w+'" height="'+h+'" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=10,0,0,0" align="middle"><param name=wmode value="transparent"><PARAM NAME=FlashVars VALUE="'+vars+'"><PARAM NAME="allowScriptAccess" VALUE="always"><PARAM NAME="allowFullScreen" VALUE="true"><PARAM NAME="movie" VALUE="'+flashUrl+'"><PARAM NAME="loop" VALUE="false"><PARAM NAME="quality" VALUE="high"><PARAM NAME="bgcolor" VALUE="#ffffff"><embed src="'+flashUrl+'" wmode="transparent" loop="false" quality="high" bgcolor="#ffffff" width="'+w+'" height="'+h+'" name="'+name+'" id="'+name+'" swliveconnect=true  allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" align="middle" FlashVars="'+vars+'"/></OBJECT>';
}


function resizeFlash(name, w, h){
	var fl = getSWF(name);
	fl.width = parseFloat(w);
	fl.height = parseFloat(h);

	var obj = getElement("Div" + name);
	obj.style.width = parseFloat(w);
	obj.style.height = parseFloat(h);
	
	// this is for opera bug display
	var div = getElement("bugWindowId");
	if(div!=null){
		document.body.removeChild(div);
	}
	div = document.createElement('div');
	div.setAttribute("id", "bugWindowId");
	div.style.position = "absolute";
	div.style.width=1000;
	div.style.height=1000;
	div.style.zIndex=-1;
	document.body.appendChild(div);
	setTimeout('operabug()', 100);
}

function operabug(){
	var div = getElement("bugWindowId");
	div.style.display = "none";
}

function getMathMLString(text){
	text = text.trim();
	if(text.indexOf("<?")==0){
		text = text.substring(text.indexOf("/>") + 2);
	}
	
	text = text.replace(/\n/g,"");
	text = text.replace(/m:m/g,"m");

	return text;
}


function getElement(id) {
	return document.getElementById ? document.getElementById(id) : document.all[id];
}

function getSWF(movieName) {
    	if (navigator.appName.indexOf("Microsoft") != -1) {
		return document.getElementById(movieName);
    	}else {
		if (document.embeds && document.embeds[movieName]){
		      return document.embeds[movieName]; 
		}
    		if(document[movieName].length != undefined){
			return document[movieName][1];
    		}
    		return document[movieName];
	}
}


function deleteAttributesForNode(node){
	if(node.nodeType!=1) return;
	
	node.removeAttribute("class");
	node.removeAttribute("id");	
	node.removeAttribute("dir");		
	for(var i=0; i<node.childNodes.length; i++){
		deleteAttributesForNode(node.childNodes[i]);
	}
}

function editMathML(htmlId, mathml){
	alert("Here you can display the editor.\nParamters: \n- Id of component is:" + htmlId+";\n- mathml:\n"+mathml);
}