/*

TimothyHumphrey.WebControls

Copyright (c) 2003 - 2004 Timothy Humphrey



This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.



This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.



You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/



//-------------------- thwcVisibleCH_IEWindowedCover --------------------\\

thwcVisibleCH_IEWindowedCover_CoverMethod = {

	Cover : 0

	,Hide : 1

}



thwcVisibleCH_IEWindowedCover = function() {

	this.base = Handler;

	this.base();

	delete this.base;



	this.CoverMethod;

	this.HideSave;

	this.IFrame = null;

	this.Windows = [];

	this.WindowsChecked = false;

}

thwcVisibleCH_IEWindowedCover.prototype = new Handler;

thwcVisibleCH_IEWindowedCover.prototype.constructor = thwcVisibleCH_IEWindowedCover;



thwcVisibleCH_IEWindowedCover.CoverSupport = parseFloat(/MSIE (\d+\.\d+)/.exec(navigator.userAgent)[1]) >= 5.5;

thwcVisibleCH_IEWindowedCover.IFrames = [];

thwcVisibleCH_IEWindowedCover.References = 0;



thwcVisibleCH_IEWindowedCover.CreateIFrame = function() {

	var id = "thwcVisibleCH_IEWindowedCoverIFrame" + thwcVisibleCH_IEWindowedCover.IFrames.length;

	var iframe = "<iframe" +

		" id='" + id + "'" +

		" src='javascript:\'\'' frameborder='0' scrolling='no' style='display:none; position:absolute; filter:progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0);'" +

		"></iframe>";



	document.body.insertAdjacentHTML("afterBegin", iframe);

	return thwcVisibleCH_IEWindowedCover.IFrames[thwcVisibleCH_IEWindowedCover.IFrames.length] = Browser.GetElement(id);

}



thwcVisibleCH_IEWindowedCover.prototype.Load = function() {

	var data = this.Control.Data.thwcVisibleCH_IEWindowedCover;



	this.CoverMethod = data[0];

	this.HideSave = data[1];



	if(this.CoverMethod == thwcVisibleCH_IEWindowedCover_CoverMethod.Cover && !thwcVisibleCH_IEWindowedCover.CoverSupport)

		this.CoverMethod = thwcVisibleCH_IEWindowedCover_CoverMethod.Hide;



	if(thwcVisibleCH_IEWindowedCover.CoverSupport && this.CoverMethod == thwcVisibleCH_IEWindowedCover_CoverMethod.Cover) {

		while(thwcVisibleCH_IEWindowedCover.IFrames.length < 2)

			thwcVisibleCH_IEWindowedCover.CreateIFrame();

	}



	thwcVisibleCH_IEWindowedCover.References++;

}



thwcVisibleCH_IEWindowedCover.prototype.Play = function(initiator, visible) {

	var element = this.Control.Element;

	var iframe;

	var windows;

	var window;

	var location = this.Control.GetAlignmentPoint();

	var menuBounds;

	var i, iWindows, iElements;



	switch(this.CoverMethod) {

	case thwcVisibleCH_IEWindowedCover_CoverMethod.Cover:

		if(visible) {

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

				if(thwcVisibleCH_IEWindowedCover.IFrames[i].style.display == "none") {

					iframe = thwcVisibleCH_IEWindowedCover.IFrames[i];

					break;

				}

			}



			if(!iframe)

				iframe = thwcVisibleCH_IEWindowedCover.CreateIFrame();



			this.IFrame = iframe;

			iframe.style.visibility = "hidden";

			iframe.style.display = "block";

			Browser.Move(iframe, location);

			iframe.style.width = element.offsetWidth + "px";

			iframe.style.height = element.offsetHeight + "px";

			iframe.style.zIndex = element.style.zIndex - 1;

			iframe.style.visibility = "";

		}

		else

			this.IFrame.style.display = "none";

		break;

	case thwcVisibleCH_IEWindowedCover_CoverMethod.Hide:

		if(visible) {

			if(!(this.WindowsChecked && this.HideSave)) {

				this.Windows.length = 0;

				menuBounds = new Rect(location.X, location.Y, element.offsetWidth, element.offsetHeight);

				windows = [].concat(document.body.all.tags("SELECT"), document.body.all.tags("OBJECT"));



				for(iWindows = 0; iWindows < windows.length; iWindows++) {

					for(iElements = 0; iElements < windows[iWindows].length; iElements++) {

						window = windows[iWindows][iElements];

						if(menuBounds.Intersects(Browser.GetDimensions(window)))

							this.Windows[this.Windows.length] = window;

					}

				}



				this.WindowsChecked = true;

			}



			for(i = 0; i < this.Windows.length; i++)

				this.Windows[i].style.visibility = "hidden";

		}

		else {

			for(i = 0; i < this.Windows.length; i++)

				this.Windows[i].style.visibility = "";

		}

		break;

	}



	return true;

}



thwcVisibleCH_IEWindowedCover.prototype.Unload = function() {

	if(document.body.removeChild) {

		thwcVisibleCH_IEWindowedCover.References--;

		if(thwcVisibleCH_IEWindowedCover.References == 0) {

			while(thwcVisibleCH_IEWindowedCover.IFrames.length > 0) {

				document.body.removeChild(thwcVisibleCH_IEWindowedCover.IFrames[thwcVisibleCH_IEWindowedCover.IFrames.length - 1]);

				thwcVisibleCH_IEWindowedCover.IFrames.length--;

			}

		}

	}

}