/**

 * $Id: mclayer.js 520 2008-01-07 16:30:32Z spocke $

 *

 * Moxiecode floating layer script.

 *

 * @author Moxiecode

 * @copyright Copyright © 2004-2008, Moxiecode Systems AB, All rights reserved.

 */

function MCLayer(id) {

	this.id = id;

	this.settings = new Array();

	this.blockerElement = null;

	this.isMSIE = navigator.appName == "Microsoft Internet Explorer";

	this.events = false;

	this.autoHideCallback = null;

}

MCLayer.prototype = {

	moveRelativeTo : function(re, p, a) {

		var rep = this.getAbsPosition(re);

		var w = parseInt(re.offsetWidth);

		var h = parseInt(re.offsetHeight);

		var x, y;

		switch (p) {

			case "tl":

				break;

			case "tr":

				x = rep.absLeft + w;

				y = rep.absTop;

				break;

			case "bl":

				break;

			case "br":

				break;

		}

		this.moveTo(x, y);

	},

	moveBy : function(dx, dy) {

		var e = this.getElement();

		var x = parseInt(e.style.left);

		var y = parseInt(e.style.top);

		e.style.left = (x + dx) + "px";

		e.style.top = (y + dy) + "px";

		this.updateBlocker();

	},

	moveTo : function(x, y) {

		var e = this.getElement();

		e.style.left = x + "px";

		e.style.top = y + "px";

		this.updateBlocker();

	},

	show : function() {

		MCLayer.visibleLayer = this;

		this.getElement().style.display = 'block';

		this.updateBlocker();

	},

	hide : function() {

		this.getElement().style.display = 'none';

		this.updateBlocker();

	},

	setAutoHide : function(s, cb) {

		this.autoHideCallback = cb;

		this.registerEventHandlers();

	},

	getElement : function() {

		return document.getElementById(this.id);

	},

	updateBlocker : function() {

		if (!this.isMSIE)

			return;

		var e = this.getElement();

		var b = this.getBlocker();

		var x = this.parseInt(e.style.left);

		var y = this.parseInt(e.style.top);

		var w = this.parseInt(e.offsetWidth);

		var h = this.parseInt(e.offsetHeight);

		b.style.left = x + 'px';

		b.style.top = y + 'px';

		b.style.width = w + 'px';

		b.style.height = h + 'px';

		b.style.display = e.style.display;

	},

	getBlocker : function() {

		if (!this.blockerElement) {

			var d = document, b = d.createElement("iframe");

			b.style.cssText = 'display: none; left: 0px; position: absolute; top: 0';

			b.src = 'javascript:false;';

			b.frameBorder = '0';

			b.scrolling = 'no';

			d.body.appendChild(b);

			this.blockerElement = b;

		}

		return this.blockerElement;

	},

	getAbsPosition : function(n) {

		var p = {absLeft : 0, absTop : 0};

		while (n) {

			p.absLeft += n.offsetLeft;

			p.absTop += n.offsetTop;

			n = n.offsetParent;

		}

		return p;

	},

	registerEventHandlers : function() {

		if (!this.events) {

			var d = document;

			this.addEvent(d, 'mousedown', MCLayer.prototype.onMouseDown);

			this.events = true;

		}

	},

	addEvent : function(o, n, h) {

		if (o.attachEvent)

			o.attachEvent("on" + n, h);

		else

			o.addEventListener(n, h, false);

	},

	onMouseDown : function(e) {

		e = typeof(e) == "undefined" ? window.event : e;

		var b = document.body;

		var l = MCLayer.visibleLayer;

		if (l) {

			var mx = l.isMSIE ? e.clientX + b.scrollLeft : e.pageX;

			var my = l.isMSIE ? e.clientY + b.scrollTop : e.pageY;

			var el = l.getElement();

			var x = parseInt(el.style.left);

			var y = parseInt(el.style.top);

			var w = parseInt(el.offsetWidth);

			var h = parseInt(el.offsetHeight);

			if (!(mx > x && mx < x + w && my > y && my < y + h)) {

				MCLayer.visibleLayer = null;

				if (l.autoHideCallback && l.autoHideCallback(l, e, mx, my))

					return true;

				l.hide();

			}

		}

	},

	addCSSClass : function(e, c) {

		this.removeCSSClass(e, c);

		var a = this.explode(' ', e.className);

		a[a.length] = c;

		e.className = a.join(' ');

	},

	removeCSSClass : function(e, c) {

		var a = this.explode(' ', e.className), i;

		for (i=0; i<a.length; i++) {

			if (a[i] == c)

				a[i] = '';

		}

		e.className = a.join(' ');

	},

	explode : function(d, s) {

		var ar = s.split(d);

		var oar = new Array();

		for (var i = 0; i<ar.length; i++) {

			if (ar[i] != "")

				oar[oar.length] = ar[i];

		}

		return oar;

	},

	parseInt : function(s) {

		if (s == null || s == '')

			return 0;

		return parseInt(s);

	}

}