/*****************************************************
* ypSlideOutMenu
* 3/04/2001
*
* a nice little script to create exclusive, slide-out
* menus for ns4, ns6, mozilla, opera, ie4, ie5 on 
* mac and win32. I've got no linux or unix to test on but 
* it should(?) work... 
*
* Revised:
* - 08/29/2002 : added .hideAll()
*
* --youngpup--
*****************************************************/
ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 250
ypSlideOutMenu.hideDelay = 1000
ypSlideOutMenu.minCPUResolution = 10
// constructor
function ypSlideOutMenu(id, dir, left, top, width, height)
{
this.ie = document.all ? 1 : 0
this.ns4 = document.layers ? 1 : 0
this.dom = document.getElementById ? 1 : 0
if (this.ie || this.ns4 || this.dom) {
this.id = id
this.dir = dir
this.orientation = dir == "left" || dir == "right" ? "h" : "v"
this.dirType = dir == "right" || dir == "down" ? "-" : "+"
this.dim = this.orientation == "h" ? width : height
this.hideTimer = false
this.aniTimer = false
this.open = false
this.over = false
this.startTime = 0
this.gRef = "ypSlideOutMenu_"+id
eval(this.gRef+"=this")
ypSlideOutMenu.Registry[id] = this
var d = document
d.write('<style type="text/css">')
d.write('#' + this.id + 'Container { visibility:hidden; ')
d.write('left:' + left + 'px; ')
d.write('top:' + top + 'px; ')
d.write('overflow:hidden; }')
d.write('#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; ')
d.write('width:' + width + 'px; ')
d.write('height:' + height + 'px; ')
d.write('clip:rect(0 ' + width + ' ' + height + ' 0); ')
d.write('}')
d.write('</style>')
this.load()
}
}
ypSlideOutMenu.prototype.load = function() {
var d = document
var lyrId1 = this.id + "Container"
var lyrId2 = this.id + "Content"
var obj1 = this.dom ? d.getElementById(lyrId1) : this.ie ? d.all[lyrId1] : d.layers[lyrId1]
if (obj1) var obj2 = this.ns4 ? obj1.layers[lyrId2] : this.ie ? d.all[lyrId2] : d.getElementById(lyrId2)
var temp
if (!obj1 || !obj2) window.setTimeout(this.gRef + ".load()", 100)
else {
this.container = obj1
this.menu = obj2
this.style = this.ns4 ? this.menu : this.menu.style
this.homePos = eval("0" + this.dirType + this.dim)
this.outPos = 0
this.accelConst = (this.outPos - this.homePos) / ypSlideOutMenu.aniLen / ypSlideOutMenu.aniLen 
// set event handlers.
if (this.ns4) this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
this.menu.onmouseover = new Function("ypSlideOutMenu.showMenu('" + this.id + "')")
this.menu.onmouseout = new Function("ypSlideOutMenu.hideMenu('" + this.id + "')")
//set initial state
this.endSlide()
}
}
ypSlideOutMenu.showMenu = function(id)
{
var reg = ypSlideOutMenu.Registry
var obj = ypSlideOutMenu.Registry[id]
if (obj.container) {
obj.over = true
for (menu in reg) if (id != menu) ypSlideOutMenu.hide(menu)
if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }
if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
}
}
ypSlideOutMenu.hideMenu = function(id)
{
var obj = ypSlideOutMenu.Registry[id]
if (obj.container) {
if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
obj.hideTimer = window.setTimeout("ypSlideOutMenu.hide('" + id + "')", ypSlideOutMenu.hideDelay);
}
}
ypSlideOutMenu.hideAll = function()
{
var reg = ypSlideOutMenu.Registry
for (menu in reg) {
ypSlideOutMenu.hide(menu);
if (menu.hideTimer) window.clearTimeout(menu.hideTimer);
}
}
ypSlideOutMenu.hide = function(id)
{
var obj = ypSlideOutMenu.Registry[id]
obj.over = false
if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
obj.hideTimer = 0
if (obj.open && !obj.aniTimer) obj.startSlide(false)
}
ypSlideOutMenu.prototype.startSlide = function(open) {
this[open ? "onactivate" : "ondeactivate"]()
this.open = open
if (open) this.setVisibility(true)
this.startTime = (new Date()).getTime() 
this.aniTimer = window.setInterval(this.gRef + ".slide()", ypSlideOutMenu.minCPUResolution)
}
ypSlideOutMenu.prototype.slide = function() {
var elapsed = (new Date()).getTime() - this.startTime
if (elapsed > ypSlideOutMenu.aniLen) this.endSlide()
else {
var d = Math.round(Math.pow(ypSlideOutMenu.aniLen-elapsed, 2) * this.accelConst)
if (this.open && this.dirType == "-") d = -d
else if (this.open && this.dirType == "+") d = -d
else if (!this.open && this.dirType == "-") d = -this.dim + d
else d = this.dim + d
this.moveTo(d)
}
}
ypSlideOutMenu.prototype.endSlide = function() {
this.aniTimer = window.clearTimeout(this.aniTimer)
this.moveTo(this.open ? this.outPos : this.homePos)
if (!this.open) this.setVisibility(false)
if ((this.open && !this.over) || (!this.open && this.over)) {
this.startSlide(this.over)
}
}
ypSlideOutMenu.prototype.setVisibility = function(bShow) { 
var s = this.ns4 ? this.container : this.container.style
s.visibility = bShow ? "visible" : "hidden"
}
ypSlideOutMenu.prototype.moveTo = function(p) { 
this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"
}
ypSlideOutMenu.prototype.getPos = function(c) {
return parseInt(this.style[c])
}
ypSlideOutMenu.prototype.onactivate = function() { }
ypSlideOutMenu.prototype.ondeactivate = function() { }

/**
 * Build menu HTML from a JS data structure
 * HTML output is customizable with simple templates
 * Initializes ypSlideoutMenu objects
 * Assigns proper event handlers to "triggers", so 
 * you don't have to do it in the HTML
 *
 * @todo resize handler
 * @todo better netscape 4 DOM support
 * 
 */
function menuObject(menuData) {
	
	this.menuData = (menuData) ? menuData : {} // js object representing a set of menus
	this.htmlText = '' // stores html representation of menuData

	// html templates
	this.tmpl = {}
	this.tmpl.container = '<div class="ypMenuContainer" id="%sContainer"><div id="%sContent"><div class="ypMenuTop"><span></span></div>%s<div class="ypMenuBtm"><span></span></div></div></div>'
	this.tmpl.content   = '<div class="ypMenuContent">%s</div>'
	this.tmpl.link      = '<a href="%s" title="%s">%s</a><br />'
	this.tmpl.sep       = '<hr />'
	this.tmpl.heading   = '<p class="ypMenuHeading">%s</p>'
		
	// methods
	this.isSupported = isSupported
	this.initMenus = initMenus
	this.buildMenuHTML = buildMenuHTML
	this.initMenuObj = initMenuObj
	this.assignMenuHandlers = assignMenuHandlers
	this.assignNoMenuHandler = assignNoMenuHandler
	this.writeMenus = writeMenus
	this.setTemplate = setTemplate
	this.getTemplate = getTemplate
	this.renderContainer = renderContainer
	this.renderContent = renderContent
	this.renderLink = renderLink
	this.renderSep = renderSep
	this.renderHeading = renderHeading
	this.merge = merge
}

function isSupported() {
	return true;
}

function initMenus() {
	var menus = this.menuData.menus
	for (menuId in menus) {
		var triggerId  = menus[menuId].trigger
		var offsetX    = menus[menuId].offsetX
		// hack for IE6 PC
		// the offsets didnt match the needed offsets for menus
		// to line up in Firefox 1.5
		var offsetY;
		var imgName = menuId+"Btn";
		var img = xbGetElementById(imgName);
		
		offsetY = xbGetElementPageY( img ) - 45;
		if (front != false) {
			offsetY = offsetY - 10;
		}
		//alert( "imgName: " + imgName + " menuId: "+menuId+" y: "+xbGetElementPageY(img) );
		
		/* if (isIE55Up) { */
/* 			offsetY    = menus[menuId].offsetY + 15; */
/* 		} else if (isIE55Down) { */
/* 			offsetY    = menus[menuId].offsetY + 14; */
/* 		} else { */
/* 			offsetY    = menus[menuId].offsetY; */
/* 		} */
		var height     = menus[menuId].height
		var width      = menus[menuId].width
		var direction  = menus[menuId].direction
		var items      = menus[menuId].items
		
		// init yp menu objects for this menu
		this.initMenuObj(triggerId, offsetX, offsetY, height, width, direction)
		
		// assign the hide/show event handlers to the menu's trigger element
		this.assignMenuHandlers(menuId, triggerId)
		
		// assign window resize function
		/*assignResizeHandler()*/
		
		// build html for this menu
		this.htmlText += this.buildMenuHTML(menuId, items)
	}
	
	// assign "nomenu" handlers, if any
	if (this.menuData.nomenus) {
		for (var i = 0; i < this.menuData.nomenus.length; i++) {
			assignNoMenuHandler(this.menuData.nomenus[i])
		}
	}
}

function buildMenuHTML(menuId, items) {
	var menuText = ''
	for (var i = 0; i < items.length; i++) {
		var type = items[i].type
		var fnName = 'render' + type.substr(0,1).toUpperCase() + type.substr(1)
		if (typeof this[fnName] != 'undefined') {
			menuText += this[fnName](items[i])
		}
	}
	menuText = this.renderContent(menuId, menuText)
	menuText = this.renderContainer(menuId, menuText)
	return menuText
}

function initMenuObj(triggerId, offsetX, offsetY, height, width, direction) {
	triggerElm = xbGetElementById(triggerId)
	if (triggerElm) {
		initTop    = xbGetElementPageY(triggerElm) + offsetY
		initLeft   = xbGetElementPageX(triggerElm) + offsetX
		xbGetElementPageY(triggerElm)
		new ypSlideOutMenu(menuId, direction, initLeft, initTop, width, height)
	}
}

function assignMenuHandlers(menuId, triggerId) {
	var triggerElm = xbGetElementById(triggerId)
	if (triggerElm) {
		var mouseOver = new Function('ypSlideOutMenu.showMenu(\'' + menuId + '\')')
		var mouseOut = new Function('ypSlideOutMenu.hideMenu(\'' + menuId + '\')')
		xbAddEventListener(triggerElm, 'mouseover', mouseOver)
		xbAddEventListener(triggerElm, 'mouseout', mouseOut)
	}
}

function assignNoMenuHandler(triggerId) {
	var triggerElm = xbGetElementById(triggerId)
	if (triggerElm) {
		xbAddEventListener(triggerElm, 'mouseover', ypSlideOutMenu.hideAll)
	}
}

function writeMenus() {
	if ( this.isSupported() ) {
		this.initMenus()
		document.write(this.htmlText)
	}
}

function getTemplate(name) {
	return this.tmpl.name
}

function setTemplate(name, s) {
	this.tmpl.name = s
}

function renderContainer(id, content) {
	return this.merge(this.tmpl.container, id, id, content)
}

function renderContent(id, content) {
	return this.merge(this.tmpl.content, content)
}

function renderLink(item) {
	return this.merge(this.tmpl.link, item.href, (item.title) ? item.title : '', item.text)
}

function renderSep() {
	return this.tmpl.sep
}

function renderHeading(item) {
	return this.merge(this.tmpl.heading, item.text)
}

function merge(tmpl) {
	var args = merge.arguments
	for (var i = 1; i < args.length; i++) {
		ix = tmpl.indexOf('%s')
		if (ix != -1) {
			start = tmpl.substring(0, ix)
			end = tmpl.substring(ix+2, tmpl.length)
			tmpl = start + args[i] + end
		}
		else {
			break
		}
	}
	return tmpl
}