/********************************************************************************************************************************
* Licensed Materials - Property of IBM                                                                                          *
*                                                                                                                               *
* IBM Cognos Products: AGS                                                                                                      *
*                                                                                                                               *
* (C) Copyright IBM Corp. 2005, 2008                                                                                            *
*                                                                                                                               *
* US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. *
*********************************************************************************************************************************/

/*-----------------------------------------------------------------------------------------------------

Class :			CMenu

Description :	

-----------------------------------------------------------------------------------------------------*/

//this compensates for a difference in calculation of the page width by 18 pixels
//in mozilla and netscape versus IE
var MOZILLA_PAGE_WIDTH_COMPENSATION = 18;

function CMenu(id,style) {
	this.m_htmlContainer = document.body;
	this.m_bVisible = false;
	this.m_id = id;
	this.m_htmlDivElement = null;
	this.m_parent = null;
	this.m_menuItems = new Array();
	this.m_style = style;
	this.m_callback = null;
	this.m_observers = new CObserver(this);
	this.m_offsetXCoords = 0;
	this.m_offsetYCoords = 0;
	this.m_bContainsCascadedChildren = false;
}

function CMenu_setHTMLContainer(container) {
	this.m_htmlContainer = container;
}

function CMenu_getHTMLContainer() {
	return this.m_htmlContainer;
}

function CMenu_setParent(parent) {
	this.m_parent = parent;
}

function CMenu_getParent() {	
	return this.m_parent;
}

function CMenu_getId() {
	return this.m_id;
}

function CMenu_getHTMLDiv() {
	return this.m_htmlDivElement;
}

function CMenu_create() {

	newElement = (document.all && typeof this.m_htmlContainer.document != "undefined") ? this.m_htmlContainer.document.createElement("div") : this.m_htmlContainer.ownerDocument.createElement("div");
	
	if(typeof this.getStyle() == "object") 
		newElement.className = this.getStyle().getNormalState();

	newElement.style.display = "none";
	newElement.style.position = "absolute";
	newElement.id = this.m_id;

	//append the new menu
	this.m_htmlContainer.appendChild(newElement);

	//create a reference to it
	this.m_htmlDivElement = newElement;
}

function CMenu_draw() {

	if(this.m_htmlContainer == null)
		return;

	if(this.m_htmlDivElement == null)
		this.create();

	var html='';
	
	if(this.m_menuItems.length == 0) {
		if(this.m_callback != null) {

			menu = this;
			setTimeout("menu.executeCallback()", 1000);

			// build a html div with a wait cursor
			html='<table class="menuItem_normal" CELLPADDING="0" CELLSPACING="0">';

			html += '<tr>';

			html += '<td>';
			html += '<img width="16" height="16" src="../common/images/tv_loading.gif"/>';
			html += '</td>';
			
			html += '<td nowrap="nowrap" align="left">';
			if(typeof gUIFrameWorkMenuLoadingMessage != 'undefined') {
				html += gUIFrameWorkMenuLoadingMessage;
			} else {
				html += '...';
			}
			
			html += '</td>';

			html += '</tr>';

			html += '</table>';
		}

	} else {

		//add the items
		var i=0;
		var html='<table CELLPADDING="0" CELLSPACING="0" role="menu" aria-label="Menu Popup">';
		for (i=0; i < this.m_menuItems.length; i++) {
			if(this.m_menuItems[i].isVisible()) {
				html += '<tr><td>';
				html += this.m_menuItems[i].draw();
				html += '</td></tr>';
			}
		}
		html += '</table>';
	}

	try
	{
		this.m_htmlDivElement.innerHTML = html;
		// attach the event handlers
		this.attachEvents();
	}
	catch (e)
	{
	}
}

function CMenu_updateCoords() {

    //set the z-index first, we still need to set it even if the menu doesn't have a parent
    //and the coordinates are not set, This is to ensure that the hidden 'shim' is displayed
    //underneath the menu
	this.setZIndex(500);

	myParent = this.getParent();
	if(this.getHTMLDiv() == null || myParent == null || ( !(myParent instanceof CToolbarButton) && !(myParent instanceof CMenuItem) ) ) {
		return;
	}
	
	// make sure the parent has implemented the method "getMenuType"
	if(typeof myParent.getMenuType != 'function') {
		return;
	}
	
	var x=0; var y=0;
	myParentHTMLElement = document.getElementById(this.getParent().getId());
	if(myParentHTMLElement == null)
		return;
		
	var current = myParentHTMLElement; 

	// calculate the page width
	var pageWidth = 0;
	if(typeof window.innerWidth != "undefined")
		pageWidth = window.innerWidth - MOZILLA_PAGE_WIDTH_COMPENSATION;
	else 
		pageWidth = document.body.clientWidth;
		
	// calculate the page height
	var pageHeight = 0;		
	if(typeof window.innerHeight != "undefined") 
		pageHeight = window.innerHeight;
	else
		pageHeight = document.body.clientHeight;		
	
	// handle drop down menus
	if(myParent.getMenuType() == 'dropDown') {
		
		x = document.body.scrollLeft; y = myParentHTMLElement.offsetHeight + document.body.scrollTop;

		while(current != null) {
			x += current.offsetLeft; y += current.offsetTop;
			current = current.offsetParent;
		}

		// if the right side of the drop down menu extends beyond browser window viewing area, adjust accordingly
		if((x + this.getHTMLDiv().offsetWidth) > pageWidth) {
			x = pageWidth - this.getHTMLDiv().offsetWidth;
		}

		// if the bottom of the drop down menu extends below the browser viewing area and there is enough room to draw at the top, then draw to the top
		if(((y + this.getHTMLDiv().offsetHeight) > pageHeight) && (y - (this.getHTMLDiv().offsetHeight + myParentHTMLElement.clientHeight) >= 0)) {
			y -= (this.getHTMLDiv().offsetHeight + myParentHTMLElement.clientHeight);
		}
	} else if(myParent.getMenuType() == 'cascaded') {
	
		x = myParentHTMLElement.offsetWidth + document.body.scrollLeft; y = document.body.scrollTop;
	
		while(current != null) {
			x += current.offsetLeft; y += current.offsetTop;
			current = current.offsetParent;
		}

		// if the right side of the cascaded menu extends beyond the viewing area of the browser window right side, render to the left insted of the right
		if((x + this.getHTMLDiv().offsetWidth) > pageWidth) {
			x -= myParentHTMLElement.offsetWidth + this.getHTMLDiv().offsetWidth;
		}

		// if the bottom of the cascaded menu extends beyond the bottom of the browser viewing area, draw to the top
		if((y + this.getHTMLDiv().offsetHeight) > pageHeight) {
			y -= (this.getHTMLDiv().offsetHeight-myParentHTMLElement.clientHeight);
		}
	}

	this.setXCoord(x);
	this.setYCoord(y);
}

function CMenu_add(menuItem) {
	if(typeof menuItem.getObservers == "function" && typeof menuItem.getObservers() == "object") {
		menuItem.getObservers().attach(this, this.closeSubMenus, menuItem.onmouseover);
		menuItem.getObservers().attach(this, this.closeAllMenus, menuItem.onmouseup);
		menuItem.getObservers().attach(this, this.closeSubMenus, menuItem.onfocus);
		menuItem.getObservers().attach(this, this.closeAllMenus, menuItem.onkeypress);		
	}
	this.m_menuItems[this.m_menuItems.length] = menuItem;
}

function CMenu_get(index) {
	if(index >= 0 && index < this.getNumItems()) {
		return this.m_menuItems[index];
	}
	return null;
}

function CMenu_getNumItems() {
	return this.m_menuItems.length;
}

function CMenu_hide() {
	if(this.m_htmlDivElement != null) {
		this.m_htmlDivElement.style.display = "none";
		this.hideHiddenIframe();			
	}
	this.m_bVisible = false;
	
	// get the actual element that spawned the menu
	var theControl = this.getParent();
	
	if (theControl != null && typeof theControl.setFocus == "function")
		theControl.setFocus();
}

function CMenu_show() {
	if(this.m_htmlDivElement != null) {
	    var htmlElementId = this.m_htmlDivElement.id;
		this.m_htmlDivElement.style.display = "block";
		this.m_bVisible = true;
		
		// update the x and y coords
		this.updateCoords();
		
		var isNS7 = ((!document.all) && (document.getElementById)) ? true : false;
		var iFrameId = "uiFrameworkHiddenIframe"+this.m_id;
		var hiddenIframeElement = document.getElementById(iFrameId);

		//create the shim and set its size and coords based on the parent menu
		if (hiddenIframeElement == null) {
			hiddenIframeElement = this.createHiddenIFrame(iFrameId);
		}
		
		//show the shim
		if(hiddenIframeElement) {
			hiddenIframeElement.style.display = "block";
			updateIframeCoords(iFrameId, htmlElementId, isNS7);
			setTimeout('updateIframeCoords("'+iFrameId+'", "'+htmlElementId+'", '+isNS7+')',50);
		}
		
		if (!isNS7)
		{
			try 
			{
				this.m_htmlDivElement.focus();
			}
			catch (e) 
			{
			}
		}
	}
}

function CMenu_createHiddenIFrame(iFrameId)
{
	var container = this.getHTMLContainer();
	
	var iframeElem = (document.all && typeof container.document != "undefined") ? container.document.createElement("iframe") : container.ownerDocument.createElement("iframe");
	
	iframeElem.setAttribute("id",iFrameId);
	iframeElem.setAttribute("src",'../common/images/spacer.gif');
	iframeElem.setAttribute("scrolling",'no');
	iframeElem.setAttribute("frameborder",'0');
	iframeElem.style.position='absolute';
	iframeElem.style.minWidth='0px';
	iframeElem.style.minHeight='0px';
	iframeElem.style.left='0px';
	iframeElem.style.top='0px';
	iframeElem.style.zIndex=-499;
	iframeElem.style.display='none';
	
	container.appendChild(iframeElem);

	return iframeElem;
}

function CMenu_isVisible() {
	return this.m_bVisible;
}

function CMenu_remove(childClicked) {
	for(var i = 0; i < this.getNumItems(); ++i) {
		var currentItem = this.get(i);
		if(typeof currentItem.getMenu == "function" &&  currentItem.getMenu() != null) 
			currentItem.getMenu().remove();
	}

    //Only enable when not clicking this items parent.
    if (this.getParent && this.getParent() instanceof CMenuItem && !childClicked) {
        this.getParent().enable();
    }

	if(this.m_htmlContainer != null && this.m_htmlDivElement != null) {
		this.m_htmlContainer.removeChild(this.m_htmlDivElement);
	}

	this.m_bVisible = false;
	this.m_htmlDivElement = null;
	
	this.hideHiddenIframe();
}

function CMenu_hideHiddenIframe(forceHide) {
    var hiddenIframeElement = document.getElementById("uiFrameworkHiddenIframe"+this.m_id);

    if(hiddenIframeElement) {
        hiddenIframeElement.style.display = "none";	
    }
}

function CMenu_enable() {

}

function CMenu_disable() {

}

function CMenu_getState() {

}

function CMenu_clear() {
	if(this.m_htmlDivElement != null)
		this.m_htmlDivElement.innerHTML='';
	this.m_menuItems.splice(0, this.m_menuItems.length)
}

function CMenu_attachEvents() {
	for(var i = 0; i < this.m_menuItems.length; i++) {
		if(typeof this.m_menuItems[i].attachEvents == "function")
			this.m_menuItems[i].attachEvents();
	}
}

function CMenu_closeSubMenus(state) {
	// Called during a notification...
	// make sure we hide any submenus which have been opened.
	for(var i = 0; i < this.m_menuItems.length; i++) {
		menuItem = this.m_menuItems[i];
		subject = state.getSubject();
		if(menuItem != subject && typeof menuItem.getMenu == "function" && menuItem.getMenu() != null && menuItem.getMenu().isVisible()) {
		    menuItem.getMenu().remove();
		}
	}
}

function CMenu_closeAllMenus(state) {
	// Called during a notification...
	current = this;
	var highestMenu = null;
	while(current) {
		if(current instanceof CMenu) {
			highestMenu = current;
		}
		
		//not always guaranteed to have a parent, for example drop down combo boxes
		if (current.getParent) {
		    current = current.getParent();
		}
		else {
		    current=null;
		}
	}

	if(highestMenu != null)
		highestMenu.remove();
}


function CMenu_setStyle(style) {
	this.m_style = style;
}

function CMenu_getStyle() {
	return this.m_style;
}

function CMenu_setOffsetXCoords(x) {
    if (x && x != 'undefined')
        this.m_offsetXCoords = x;
}

function CMenu_setOffsetYCoords(y) {
    if (y && y != 'undefined')
        this.m_offsetYCoords = y;
}

function CMenu_setContainsCascadedChildren(flag) {
    this.m_bContainsCascadedChildren = flag;
}

function CMenu_hasCascadedChildren() {
    return this.m_bContainsCascadedChildren;
}

function CMenu_setXCoord(x) {
	htmlDiv = this.getHTMLDiv();
	if(htmlDiv != null)
		htmlDiv.style.left = x + this.m_offsetXCoords + "px";
}

function CMenu_setYCoord(y) {
	htmlDiv = this.getHTMLDiv();
	if(htmlDiv != null)
		htmlDiv.style.top = y + this.m_offsetYCoords + "px";
}

function CMenu_setZIndex(zIndex) {
	htmlDiv = this.getHTMLDiv();
	if(htmlDiv != null)
		htmlDiv.style.zIndex = zIndex;
}

// set a callback routine to populate the menu
function CMenu_registerCallback(callback) {
	this.m_callback = callback;
}

function CMenu_executeCallback() {
	if(this.m_callback == null)
		return;
	this.m_callback();
}

function CMenu_getObservers() {
	return this.m_observers;
}

function CMenu_onmouseover(evt) {
	//get the event in a cross-browser fashion
	evt = (evt) ? evt : ((event) ? event : null);

	// notify our parent (if one exists) of this event
	if(this.getParent() != null && typeof this.getParent().onmouseover == 'function')
		this.getParent().onmouseover(evt);	
	
	// notify observers of this event	
	this.getObservers().notify(CMenu_onmouseover);	
}

function CMenu_onmouseout(evt) {
	//get the event in a cross-browser fashion
	evt = (evt) ? evt : ((event) ? event : null);
	
	// notify our parent (if one exists) of this event
	if(this.getParent() != null && typeof this.getParent().onmouseout == 'function')
		this.getParent().onmouseout(evt);
		
	// notify observers of this event	
	this.getObservers().notify(CMenu_onmouseout);	
}

function CMenu_onmouseup(evt) {
	//get the event in a cross-browser fashion
	evt = (evt) ? evt : ((event) ? event : null);
	
	// notify our parent (if one exists) of this event
	if(this.getParent() != null && typeof this.getParent().onmouseup == 'function')
		this.getParent().onmouseup(evt);
	
	// notify observers of this event	
	this.getObservers().notify(CMenu_onmouseup);	
}

function CMenu_onkeypress(evt) {
	//get the event in a cross-browser fashion
	evt = (evt) ? evt : ((event) ? event : null);
	
	// notify our parent (if one exists) of this event
	if(this.getParent() != null && typeof this.getParent().onkeypress == 'function')
		this.getParent().onkeypress(evt);
	
	// notify observers of this event	
	this.getObservers().notify(CMenu_onkeypress);	
}

CMenu.prototype.draw = CMenu_draw;
CMenu.prototype.updateCoords = CMenu_updateCoords;
CMenu.prototype.add	= CMenu_add;
CMenu.prototype.get = CMenu_get;
CMenu.prototype.getNumItems = CMenu_getNumItems;
CMenu.prototype.hide = CMenu_hide;
CMenu.prototype.hideHiddenIframe = CMenu_hideHiddenIframe;
CMenu.prototype.show = CMenu_show;
CMenu.prototype.enable = CMenu_enable;
CMenu.prototype.disable = CMenu_disable;
CMenu.prototype.getState = CMenu_getState;
CMenu.prototype.clear = CMenu_clear;
CMenu.prototype.attachEvents = CMenu_attachEvents;
CMenu.prototype.setParent = CMenu_setParent;
CMenu.prototype.getParent = CMenu_getParent;
CMenu.prototype.getHTMLContainer = CMenu_getHTMLContainer;
CMenu.prototype.setHTMLContainer = CMenu_setHTMLContainer;
CMenu.prototype.getHTMLDiv = CMenu_getHTMLDiv;
CMenu.prototype.create = CMenu_create;
CMenu.prototype.remove = CMenu_remove;
CMenu.prototype.getId = CMenu_getId;
CMenu.prototype.isVisible = CMenu_isVisible;
CMenu.prototype.setStyle = CMenu_setStyle;
CMenu.prototype.getStyle = CMenu_getStyle;
CMenu.prototype.closeSubMenus = CMenu_closeSubMenus;
CMenu.prototype.closeAllMenus = CMenu_closeAllMenus
CMenu.prototype.setOffsetXCoords = CMenu_setOffsetXCoords;
CMenu.prototype.setOffsetYCoords = CMenu_setOffsetYCoords;
CMenu.prototype.setContainsCascadedChildren = CMenu_setContainsCascadedChildren;
CMenu.prototype.hasCascadedChildren = CMenu_hasCascadedChildren;
CMenu.prototype.setXCoord = CMenu_setXCoord;
CMenu.prototype.setYCoord = CMenu_setYCoord;
CMenu.prototype.setZIndex = CMenu_setZIndex;
CMenu.prototype.update = new Function("return true");
CMenu.prototype.registerCallback = CMenu_registerCallback;
CMenu.prototype.executeCallback = CMenu_executeCallback;
CMenu.prototype.getObservers = CMenu_getObservers;
CMenu.prototype.onmouseover = CMenu_onmouseover;
CMenu.prototype.onmouseout = CMenu_onmouseout;
CMenu.prototype.onmouseup = CMenu_onmouseup;
CMenu.prototype.onkeypress = CMenu_onkeypress;
CMenu.prototype.createHiddenIFrame = CMenu_createHiddenIFrame;


function updateIframeCoords(id, containerId, isNS7)
{
	var container = document.getElementById(containerId);
	var hiddenIframeElement = document.getElementById(id);
	if (hiddenIframeElement && container) {
		if(isNS7 == true) {
			hiddenIframeElement.style.left = container.offsetLeft;		
			hiddenIframeElement.style.top = container.offsetTop;
			hiddenIframeElement.style.width = container.offsetWidth;
			hiddenIframeElement.style.height = container.offsetHeight;
		} else {			
			hiddenIframeElement.style.pixelLeft = container.offsetLeft;		
			hiddenIframeElement.style.pixelTop = container.offsetTop;
			hiddenIframeElement.style.pixelWidth = container.offsetWidth;
			hiddenIframeElement.style.pixelHeight = container.offsetHeight;	
		}
	}
}