/*****************************************************

 * ypSlideOutMenu

 * 3/04/2001

 * 

 *

 * --youngpup--

 *****************************************************/



ypSlideOutMenu.Registry = []

ypSlideOutMenu.aniLen = 500

ypSlideOutMenu.hideDelay = 500

ypSlideOutMenu.minCPUResolution = 10



// constructor

function ypSlideOutMenu(id, dir, left, top, width, height)

{

	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



	// global reference to this object

	this.gRef = "ypSlideOutMenu_"+id

	eval(this.gRef+"=this")



	// add this menu object to an internal list of all menus

	ypSlideOutMenu.Registry[id] = this



	var d = document



	var strCSS = '<style type="text/css">';

	strCSS += '#' + this.id + 'Container { visibility: hidden; display: block;'

	strCSS += 'left:' + left + 'px; '

	strCSS += 'top:' + top + 'px; '

	strCSS += 'overflow:hidden; z-index:10000; }'

	strCSS += '#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; '

	strCSS += 'width:' + width + 'px; '

	strCSS += 'height:' + height + 'px; '

	strCSS += 'clip:rect(0 ' + width + ' ' + height + ' 0); '

	strCSS += '}'

	strCSS += '</style>';

	d.write(strCSS)



	this.load()

}



ypSlideOutMenu.prototype.load = function() {

	var trigger = document.getElementById(this.id + "Trigger");

	var obj1 = document.getElementById(this.id + "Container")

	if (obj1) var obj2 = document.getElementById(this.id + "Content")

	var temp



	if (!obj1 || !obj2) window.setTimeout(this.gRef + ".load()", 100)

	else {

		this.trigger	= trigger

		this.container	= obj1

		this.menu		= obj2

		this.homePos	= eval("0" + this.dirType + this.dim)

		this.outPos		= 0

		this.accelConst	= (this.outPos - this.homePos) / ypSlideOutMenu.aniLen / ypSlideOutMenu.aniLen 



		// set event handlers.

		this.trigger.onmouseover = new Function("ypSlideOutMenu.showMenu('" + this.id + "')");

		this.trigger.onmouseout = new Function("ypSlideOutMenu.hideMenu('" + this.id + "')");

		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



		// close other menus.

		for (menu in reg) if (id != menu) ypSlideOutMenu.hide(menu)



		// if this menu is scheduled to close, cancel it.

		if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }



		// if this menu is closed, open it.

		if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)

	}

}



ypSlideOutMenu.hideMenu = function(id)

{

	// schedules the menu to close after <hideDelay> ms, which

	// gives the user time to cancel the action if they accidentally moused out

	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)

	

	// flag that this scheduled event has occured.

	obj.hideTimer = 0



	// if this menu is open, close it.

	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.container.style

	s.visibility = bShow ? "visible" : "hidden"

}

ypSlideOutMenu.prototype.moveTo = function(p) { 

	this.menu.style[this.orientation == "h" ? "left" : "top"] = p + "px"

}

ypSlideOutMenu.prototype.getPos = function(c) {

	return parseInt(this.menu.style[c])

}



// events

ypSlideOutMenu.prototype.onactivate		= function() { }

ypSlideOutMenu.prototype.ondeactivate	= function() { }