/**
 * SUBMODAL v1.5
 * Used for displaying DHTML only popups instead of using buggy modal windows.
 *
 * By Seth Banks
 * http://www.subimage.com/
 *
 * Contributions by:
 * 	Eric Angel - tab index code
 * 	Scott - hiding/showing selects for IE users
 *	Todd Huss - inserting modal dynamically and anchor classes
 *
 * Up to date code can be found at http://www.subimage.com/dhtml/subModal
 * 
 *
 * This code is free for you to use anywhere, just keep this comment block.
 */

// Popup code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc='DoPostBack';
var gPopupIsShown = false;
var gDefaultPage = "common/modal/loading.htm";
var gHideSelects = false;
var gReturnVal = null;
var preOnMouseMoveFun;
var preOnMouseUpFun;

var gTabIndexes = new Array();
// Pre-defined list of tags we want to disable/enable tabbing into
var gTabbableTags = new Array("A","BUTTON","TEXTAREA","INPUT","IFRAME");	

// If using Mozilla or Firefox, use Tab-key trap.
if (!document.all) {
	document.onkeypress = keyDownHandler;
}



/**
 * Initializes popup code on load.	
 */
function initPopUp() {
	// Add the HTML to the body
	
	if (!document.getElementById('popupContainer'))
	{	
		theBody = document.getElementsByTagName('BODY')[0];
		popmask = document.createElement('div');
		popmask.id = 'popupMask';
		popcont = document.createElement('div');
		popcont.id = 'popupContainer';
		popcont.innerHTML = '' +
			'<div id="popupInner">' +
				'<div id="popupTitleBar" class="draggable">' +
					'<div id="popupTitle" class="draggable"></div>' +
					'<div id="popupControls">' +
						'<img src="'+((window['currentLocation']!=undefined)?currentLocation:"")+'StatPortal_RSC/images/close.gif" onclick="hidePopWin(false);" id="popCloseBox" />' +
					'</div>' +
				'</div>' +
				'<iframe src="'+((window['currentLocation']!=undefined)?currentLocation:"")+gDefaultPage+'" style="width:100%;height:100%;background-color:transparent;" scrolling="auto" frameborder="0" allowtransparency="true" id="popupFrame" name="popupFrame" width="100%" height="100%"></iframe>' +
			'</div>';
		theBody.appendChild(popmask);
		theBody.appendChild(popcont);
		
		gPopupMask = document.getElementById("popupMask");
		gPopupContainer = document.getElementById("popupContainer");
		gPopFrame = document.getElementById("popupFrame");	
		
		// check to see if this is IE version 6 or lower. hide select boxes if so
		// maybe they'll fix this in version 7?
		var brsVersion = parseInt(window.navigator.appVersion.charAt(0), 10);
		if (brsVersion <= 6 && window.navigator.userAgent.indexOf("MSIE") > -1) {
			gHideSelects = true;
		}
		
		// Add onclick handlers to 'a' elements of class submodal or submodal-width-height
		var elms = document.getElementsByTagName('a');
		for (i = 0; i < elms.length; i++) {
			if (elms[i].className.indexOf("submodal") == 0) { 
				// var onclick = 'function (){showPopWin(\''+elms[i].href+'\','+width+', '+height+', null);return false;};';
				// elms[i].onclick = eval(onclick);
				elms[i].onclick = function(){
					// default width and height
					var width = 640;
					var height = 400;
					// Parse out optional width and height from className
					params = this.className.split('-');
					if (params.length == 3) {
						width = parseInt(params[1]);
						height = parseInt(params[2]);
					}
					showPopWin(this.href,width,height,DoPostBack,'title',true); return false;
				}
			}
		}
	}
	
}
addEvent(window, "load", initPopUp);

 /**
	* @argument width - int in pixels
	* @argument height - int in pixels
	* @argument url - url to display
	* @argument returnFunc - function to call when returning true from the window.
	* @argument showCloseBox - show the close box - default true
	*/
function showPopWin(url, width, height, returnFunc, title, showCloseBox) {

    showPopWinRoot('', url, width, height, returnFunc, title, showCloseBox);

}

function showAjaxWin(url, width, height, returnFunc, title, showCloseBox) {
    showPopWin(url + '?AJAX=true', width, height, returnFunc, title, showCloseBox);
}

/**
	* @argument width - int in pixels
	* @argument height - int in pixels
	* @argument url - url to display
	* @argument returnFunc - function to call when returning true from the window.
	* @argument showCloseBox - show the close box - default true
	*/
function showPopWinRoot(pathRoot, url, width, height, returnFunc,title, showCloseBox) {

    document.getElementById("popupTitle").innerHTML = '';
    // show or hide the window close widget
    if (showCloseBox == null || showCloseBox == true) {
        document.getElementById("popCloseBox").style.display = "block";
    } else {
        document.getElementById("popCloseBox").style.display = "none";
    }
    gPopupIsShown = true;
    disableTabIndexes();
    gPopupMask.style.display = "block";
    gPopupContainer.style.display = "block";
    // calculate where to place the window on screen

    centerPopWin(width, height);

    var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);


    gPopupContainer.style.width = width + "px";
    gPopupContainer.style.height = (height + titleBarHeight) + "px";


    setMaskSize();

    // need to set the width of the iframe to the title bar width because of the dropshadow
    // some oddness was occuring and causing the frame to poke outside the border in IE6
    gPopFrame.style.width = parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) + "px";
    gPopFrame.style.height = (height) + "px";

    // set the url	
    gPopFrame.src = pathRoot+ 'WindowPage.aspx?Control=' + url;

    gReturnFunc = returnFunc;

    // for IE
    if (gHideSelects == true) {
        hideSelectBoxes();
    }
    gPopupContainer.onmousedown = startDrag;
    preOnMouseUpFun = document.onmouseup;
    document.onmouseup = stopDrag;


    if (title != null && title != '')
        setPopTitle(title);
    
}

//
var gi = 0;
function centerPopWin(width, height) {

	if (gPopupIsShown == true) {
		if (width == null || isNaN(width)) {
			width = gPopupContainer.offsetWidth;
		}
		if (height == null) {
			height = gPopupContainer.offsetHeight;
		}
		
		//var theBody = document.documentElement;
		var theBody = document.getElementsByTagName("BODY")[0];
		//theBody.style.overflow = "hidden";
		var scTop = parseInt(getScrollTop(),10);
		var scLeft = parseInt(theBody.scrollLeft,10);
	
		setMaskSize();
		
		//window.status = gPopupMask.style.top + " " + gPopupMask.style.left + " " + gi++;
		
		var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
		
		var fullHeight = getViewportHeight();
		var fullWidth = getViewportWidth();
		
		gPopupContainer.style.top = (scTop + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
		gPopupContainer.style.left =  (scLeft + ((fullWidth - width) / 2)) + "px";
	
	}
}
addEvent(window, "resize", centerPopWin);
addEvent(window, "scroll", centerPopWin);
window.onscroll = centerPopWin;


/**
 * Sets the size of the popup mask.
 *
 */
function setMaskSize() {

	var theBody = document.getElementsByTagName("BODY")[0];
			
	var fullHeight = getViewportHeight();
	var fullWidth = getViewportWidth();
	
	// Determine what's bigger, scrollHeight or fullHeight / width
	if (fullHeight > theBody.scrollHeight) {
		popHeight = fullHeight;
	} else {
		popHeight = theBody.scrollHeight;
	}
	
	if (fullWidth > theBody.scrollWidth) {
		popWidth = fullWidth;
	} else {
		popWidth = theBody.scrollWidth;
	}
	
	gPopupMask.style.height = popHeight + "px";
	gPopupMask.style.width = popWidth + "px";
}

/**
 * @argument callReturnFunc - bool - determines if we call the return function specified
 * @argument returnVal - anything - return value 
 */
function hidePopWin(callReturnFunc,returnVal) {

	if (preOnMouseUpFun) document.onmouseup = preOnMouseUpFun;	
	if (preOnMouseMoveFun) document.onmousemove = preOnMouseMoveFun;
	gPopupIsShown = false;
	var theBody = document.getElementsByTagName("BODY")[0];
	theBody.style.overflow = "";
	restoreTabIndexes();
	if (gPopupMask == null) {	    
		return;
	}
	gPopupMask.style.display = "none";
	gPopupContainer.style.display = "none";
	if (callReturnFunc == true && gReturnFunc != null) {
	
		// Set the return code to run in a timeout.
		// Was having issues using with an Ajax.Request();
		//gReturnVal = window.frames["popupFrame"].returnVal;		
		gReturnVal	= returnVal;
		window.setTimeout('gReturnFunc(gReturnVal);', 1);
	}
	
	gPopFrame.src =currentLocation+ gDefaultPage;
	// display all select boxes
	if (gHideSelects == true) {
		displaySelectBoxes();
	}
}

/**
 * Sets the popup title based on the title of the html document it contains.
 * Uses a timeout to keep checking until the title is valid.
 */
function setPopTitle(title) {
    if(document.getElementById("popupTitle").innerHTML == '')	    
    	document.getElementById("popupTitle").innerHTML=title;
}

// Tab key trap. iff popup is shown and key was [TAB], suppress it.
// @argument e - event - keyboard event that caused this function to be called.
function keyDownHandler(e) {
    if (gPopupIsShown && e.keyCode == 9)  return false;
}

// For IE.  Go through predefined tags and disable tabbing into them.
function disableTabIndexes() {
	if (document.all) {
		var i = 0;
		for (var j = 0; j < gTabbableTags.length; j++) {
			var tagElements = document.getElementsByTagName(gTabbableTags[j]);
			for (var k = 0 ; k < tagElements.length; k++) {
				gTabIndexes[i] = tagElements[k].tabIndex;
				tagElements[k].tabIndex="-1";
				i++;
			}
		}
	}
}

// For IE. Restore tab-indexes.
function restoreTabIndexes() {
	if (document.all) {
		var i = 0;
		for (var j = 0; j < gTabbableTags.length; j++) {
			var tagElements = document.getElementsByTagName(gTabbableTags[j]);
			for (var k = 0 ; k < tagElements.length; k++) {
				tagElements[k].tabIndex = gTabIndexes[i];
				tagElements[k].tabEnabled = true;
				i++;
			}
		}
	}
}


/**
* Hides all drop down form select boxes on the screen so they do not appear above the mask layer.
* IE has a problem with wanted select form tags to always be the topmost z-index or layer
*
* Thanks for the code Scott!
*/
function hideSelectBoxes() {
	for(var i = 0; i < document.forms.length; i++) {
		for(var e = 0; e < document.forms[i].length; e++){
			if(document.forms[i].elements[e].tagName == "SELECT") {
				document.forms[i].elements[e].style.visibility="hidden";
			}
		}
	}
}

/**
* Makes all drop down form select boxes on the screen visible so they do not reappear after the dialog is closed.
* IE has a problem with wanted select form tags to always be the topmost z-index or layer
*/
function displaySelectBoxes() {
	for(var i = 0; i < document.forms.length; i++) {
		for(var e = 0; e < document.forms[i].length; e++){
			if(document.forms[i].elements[e].tagName == "SELECT") {
			document.forms[i].elements[e].style.visibility="visible";
			}
		}
	}
}


/* queste prime tre variabili sono di sniffing, ovvero prendono il valore true se i browser sono rispettivamente IE, Netscape6 e Firefox. Lo sniffing è fatto controllando le proprietà supportate dal browser attraverso espressioni condizionali
*/

var ie5 = document.all;
var ns6 = document.getElementById && !document.all;
var ff = (navigator.userAgent.indexOf("Firefox") != -1) ? true : false;
/* se stiamo trascinando un oggetto, ovvero siamo nel terzo stato, questa variabile è vera */
var isDragging = false;
// l'oggetto da tascinare, per ora nullo
var dragObj;
// variabili di posizione, utili durante lo spostamento.
var x = 0;
var y = 0;
var tx = 0;
var ty = 0;


function startDrag(ev) {

	/* controllo il click del mouse in ogni punto dello schermo e mi riferisco all'oggetto cliccato con la variabile dragObj */
	dragObj = ns6 ? ev.target : event.srcElement;
	/* controllo l'elemento parente: in IE è l'elemento boby, in NS, FF e Opera è HTML */
	var parent = ns6 ? "HTML" : "BODY";
	/* se non sto cliccando sullo sfondo e l'oggetto cliccato è della classe draggable */
	if(dragObj.tagName != parent && dragObj.className == "draggable") {
	// posso iniziare a draggare mettendo questa variabile a true
	isDragging = true; 
	/* uso un handle, quindi devo far si che si possa draggare l'intero contenitore dell'handle. Quindi sostituisco il dragObject con il contenitore dell'handle, che è il nodo genitore più prossimo */
	//dragObj = ns6 ? dragObj.parentNode : dragObj.parentElement;
	dragObj = gPopupContainer;
	//var marLeft = dragObj.style.marginLeft;
	//var marTop = dragObj.style.marginTop;
	/* controllo se i margini sono settati su auto dai css. Se lo sono, posso ragionevolmente supporre che 2 margini opposti siano settati in auto (in modo da centrare l'elemento sullo schermo) allora prendo indicativamente come riferimento il centro dello schermo
	*/
	//marLeft = (marLeft=="auto") ? ((screen.width/2) - (parseInt(dragObj.style.width, 10))/2) : marLeft;
	//marTop = (marTop=="auto") ? ((screen.height/2) - (parseInt(dragObj.style.height, 10))/2) : marTop;
	var marLeft = dragObj.style.left;
	var marTop = dragObj.style.top;
	// segno in tx e ty i margini sinistro e destro.
	tx = parseInt(marLeft, 10);
	ty = parseInt(marTop, 10);
	// segno la posizione del click
	x = ns6 ? ev.clientX : event.clientX;
	y = ns6 ? ev.clientY : event.clientY;
	// chiamo la funzione che muove l'elemento
	preOnMouseMoveFun = document.onmousemove ;
	document.onmousemove = moveDrag;
	}
	return false;
}



function moveDrag(ev) {
	if(isDragging) {
	var tempMarginTop = ie5 ? ty + event.clientY - y : ty + ev.clientY - y;
	var tempMarginLeft = ie5 ? tx + event.clientX - x : tx + ev.clientX - x;
	//dragObj.style.marginTop = ff ? tempMarginTop+"px" : tempMarginTop;
	//dragObj.style.marginLeft = ff ? tempMarginLeft+"px" : tempMarginLeft;
	dragObj.style.top = ff ? tempMarginTop+"px" : tempMarginTop;
	dragObj.style.left = ff ? tempMarginLeft+"px" : tempMarginLeft;
	}
}



function stopDrag(ev) {
	isDragging = false; 
}