// Class prototype
// ---------------
function vOS()
{
	// Initialize properties
	// ---------------------
	this.arr_vApps		= new Array();
	this.arr_vAppsTemp	= new Array();
	this.arr_vWindows	= new Array();
	this.arr_vPrograms	= new Array();
	
	this.zOrder			= 0;
	this.activeWindow	= "a";
	this.activeElement	= "";
	this.vWindow		= vWindow;
	this.vApp			= vApp;
	
	// Initialize classes
	// ------------------
	this.taskbar		= new vTaskbar();
	this.vMenu			= new vMenu();
	this.vElement		= new vElement();
	this.iWindow		= new iWindow();
	this.vDialog		= new vDialog();
	this.vBase			= new vBase();
	this.vDesktop		= new vDesktop();
	
	// Initialize Time Functions
	// -------------------------
	this.vTime			= _vOS_vTime;
	this.vTime_change	= _vOS_vTime_change;
	this.vTime_zone		= _vOS_vTime_zone;
	this.vTime_format	= _vOS_vTime_format;
	
	// Initialize functions
	// --------------------
	this.run 			= _vOS_run;
	this.height			= _vOS_height;
	this.width			= _vOS_width;
	this.check_window	= _vOS_check_window;
	this.event			= _vOS_event;
	this.background     = _vOS_background;
	this.themeSwitch	= _vOS_themeSwitch;
	this.themeSwitched	= _vOS_themeSwitched;
	this.preloadImages	= _vOS_preloadImages;
	this.data			= _vOS_data;
	this.vLogout		= _vOS_logout;
	this.disable		= _vOS_disable;
	this.enable			= _vOS_enable;
	
	// Initialize event functions
	// --------------------------
	this.resize = _vOS_resize;
	window.onresize = function()
	{
		if (vOS.onresizetimer)
		{
			window.clearTimeout(vOS.onresizetimer);
		}
		vOS.onresizetimer = window.setTimeout("vOS.resize()", 10);
	}
	window.onerror			= _vOS_error;
	// Detect when the user tries to select text
	document.onmousedown	= _vOS_mousedown;
	document.onselectstart	= _vOS_mousedown;
	document.oncontextmenu	= new Function("return false");
	
	// Initialize inner variables (cannot be viewed by everything outside this script)
	var vTime_now = new Date(0);
	var vTime_zone = 0;

	//Create a screen container
	// ----------------
	this.screen_container = document.createElement("DIV");
	this.screen_container.style.overflow = "hidden";
	this.screen_container.style.top = "0px";
	this.screen_container.style.left = "0px";
	this.screen_container.style.width = "100%";
	this.screen_container.style.height = "100%";
	this.screen_container.style.position = "absolute";
	this.screen_container.onmouseup = _vOS_mouseup;
	this.screen_container.id = "_vOS_background";
	document.body.appendChild(this.screen_container);

	// Functions prototype
	// -------------------
	function _vOS_background(_vOS_color,_vOS_background,_vOS_repeat,_vOS_x,_vOS_y)
	{
		_vOS_repeat = _vOS_repeat == 1 ? "" : " no-repeat ";
		_vOS_x = _vOS_x ? _vOS_x : "";
		_vOS_y = _vOS_y ? _vOS_y : "";
		this.screen_container.style.background = _vOS_color + " url(" + _vOS_background + ") "+_vOS_repeat+" "+_vOS_x+" "+_vOS_y;
	}
	
	function _vOS_run(_vApp_file, _vApp_parameters)
	{
		new vOS.vApp(_vApp_file, _vApp_parameters);
	}
	
	function _vOS_height()
	{
		if (window.innerHeight)
		{
			_vOS_height = function()
			{
				return window.innerHeight;
			}
		}
		else if (document.documentElement && document.documentElement.clientHeight)
		{
			_vOS_height = function()
			{
				return document.documentElement.clientHeight;
			}
		}
		else
		{
			_vOS_height = function()
			{
				return document.body.clientHeight;
			}
		}
		return _vOS_height();
	}
	
	function _vOS_width()
	{
		if (window.innerWidth)
		{
			_vOS_width = function()
			{
				return window.innerWidth;
			}
		}
		else if (document.documentElement && document.documentElement.clientWidth)
		{
			_vOS_width = function()
			{
				return document.documentElement.clientWidth;
			}
		}
		else
		{
			_vOS_width = function()
			{
				return document.body.clientWidth;
			}
		}
		return _vOS_width();
	}
	
	function _vOS_check_window(x)
	{
		// Do not execute this function if the browserwindow is too small
		if (vOS.height() < 100 || vOS.width() < 100)
		{
			return;
		}
		// Check if it isn't a negative height
		if (parseInt(vOS.arr_vWindows[x].window_container.style.top + 0, 10) < _vTheme_padding_top)
		{
			vOS.arr_vWindows[x].setTop(_vTheme_padding_top);
		}
		// Check if it isn't to low
		if (parseInt(vOS.arr_vWindows[x].window_container.style.top + 0, 10) > (vOS.height() - (_vTheme_window_header + _vTheme_padding_bottom)))
		{
			vOS.arr_vWindows[x].setTop(vOS.height() - (_vTheme_window_header + _vTheme_padding_bottom));
		}
		// Check right side of the browser
		if (parseInt(vOS.arr_vWindows[x].window_container.style.left + 0, 10) > (vOS.width() - 50 + _vTheme_padding_right))
		{
			vOS.arr_vWindows[x].setLeft(vOS.width() - 50 + _vTheme_padding_right);
		}
		// Check left side of the browser
		if (vOS.arr_vWindows[x].window_container.clientWidth + parseInt(vOS.arr_vWindows[x].window_container.style.left + 0, 10) < (50 + _vTheme_padding_left))
		{
			vOS.arr_vWindows[x].setLeft(-1 * (vOS.arr_vWindows[x].window_container.clientWidth - 50 + _vTheme_padding_left));
		}
	}
	
	function _vOS_resize(e)
	{
		for(x=0; x < vOS.arr_vWindows.length; x++)
		{
			// Check if its still in place
			_vOS_check_window(x);
			if(vOS.arr_vWindows[x].state == "maximize")
			{
				vOS.arr_vWindows[x].maximize();
			}
		}
		
		if(vOS.activeWindow != "a")
		{
			// Keep the taskbar putton in place
			if (vOS.arr_vWindows[vOS.activeWindow].taskbar == true)
			{
				vOS.arr_vWindows[vOS.activeWindow].taskbar_button.scrollView();
			}
		}
		//Close the menu
		vOS.vMenu.closeMenu();
		vOS.vDesktop.refresh();
	}
	
	function _vOS_error(_error_message, _error_url, _error_line)
	{
		if (window.confirm("Critical error:\t" + _error_message + "\nURL:\t\t" + _error_url + "\nLine:\t\t" + _error_line + "\n\nClick OK to continue or press Cancel to start debugging.") == false)
		{
			// Code to debug the script, will only load when the Cancel button
			// is pressed at the window.confirm().
			ret = window.prompt("Enter the object name to inspect", "vOS");
			if (ret)
			{
				obj = eval(ret);
				var temp = "";
				for (x in obj)
				{
					temp += x + ": " + obj[x] + "\n";
				}
				window.alert("Results, press Ctrl+C to copy to clipboard:\n\n" + temp);
			}
		}
	}

	function _vOS_mousedown(e)
	{
		if (!e)
		{
			var e = window.event;
		}
		if (e.target)
		{
			targ = e.target;
		}
		else if (e.srcElement)
		{
			targ = e.srcElement;
		}
		// Check if a menu needs to be closed
		if (vOS.vMenu.openMenus.length > 0 && e.type == "mousedown")
		{
			// Check if the user clicks on the menu, if so, do not close it
			if (vOS.vMenu.menu_click != true)
			{
				vOS.vMenu.closeMenu(true);
			}
			else
			{
				vOS.vMenu.menu_click = false;
			}
		}
		// Check to see if the user is allowed to select text
		if (targ.tagName == "INPUT" || targ.tagName == "TEXTAREA" || targ.tagName == "SELECT" || targ.tagName == "OPTION")
		{
			if (targ.tagName != "OPTION")
			{
				vOS.activeElement = targ;
			}
			return true;
		}
		else
		{
			// Remove focus
			if (vOS.activeElement)
			{
				vOS.activeElement.blur();
			}
		}
		mousebutton = e.which ? e.which : e.button;
		if (mousebutton == 2 || mousebutton == 3)
		{
			// User clicked the right or middle button
			if (window["mousemove"] == true)
			{
				// If the user is resizing a window, cancel it
				window["mousemove"] = false;
				// Remove the two global events used for resizing
				// the windows
				document.onmouseup = null;
				document.onmousemove = null;
			}
		}
		// Set the desktop item to inactive
		vOS.vDesktop.setInactive(e);
		return false;
	}
	
	function _vOS_mouseup(e)
	{
		e = e ? e : window.event;
		
		// Check if it's the background
		targ = vOS.event(e);
		if(targ.id != "_vOS_background")
			return false;
		
		var mousebutton = e.which ? e.which : e.button;
		
		// If it is a right click
		if(mousebutton == 2 || mousebutton == 3)
		{
			var popupMenu = 
			[
				["Schikken op","",
					[
						["Naam","","vOS.vDesktop.order.name()"],
						["Raster","","vOS.vDesktop.order.grid()"]
					]
				],
				["-"],
				["Opslaan","","alert(1)"],
				["Vernieuwen","","alert(1)"],
				["-"],
				["Nieuwe...","",
					[
						["Map","","alert(1)"],
						["Snelkoppeling","","alert(1)"]
					]
				],
				["-"],
				["Eigenschappen","","alert(1)"]
			];
			vOS.vMenu.system(e.clientY, e.clientX, popupMenu);
		}
		
	}
	
	function _vOS_event(e)
	{
		var targ;
		if (e.target)
		{
			targ = e.target;
		}
		else if (e.srcElement)
		{
			targ = e.srcElement;
		}
		if (targ.nodeType == 3)
		{
			targ = targ.parentNode;
		}
		return targ;
	}
	
	function _vOS_vTime()
	{
		window.setTimeout("vOS.vTime()", 10000);
		vTime_now.setSeconds(vTime_now.getSeconds() + 10);
		this.taskbar.setTime(vTime_now);
	}
	
	function _vOS_vTime_change(time)
	{
		temp = new Date(time);
		vTime_now = new Date(temp);
		temp = (vTime_now.getTime() + (vTime_now.getTimezoneOffset() * 60000) + vTime_zone);
		vTime_now.setTime(temp);
	}
	
	function _vOS_vTime_zone(zone, saving)
	{
		var zomertijd = 1;
		// ! daylightsaving
		if (zomertijd)
		{
			zone = parseInt(zone,10) + 1;
		}
		vTime_zone = zone * 3600000;
	}
	
	function _vOS_vTime_format(type, timestamp)
	{
		if (!timestamp)
		{
			timestamp = vTime_now;
		}
		// Load how the string should be formatted from the settings array. 
		// "Type" can be a value as defined in the login script.
		var output = Settings[type];
		// Hours
		output = output.replace(/%H/, timestamp.getHours());
		output = output.replace(/%h/, (timestamp.getHours() > 12 ? timestamp.getHours() - 12 : timestamp.getHours()));
		output = output.replace(/%ampm/, (timestamp.getHours() > 12 ? "PM" : "AM"));
		// Minutes
		output = output.replace(/%N/, (timestamp.getMinutes() <= 9 ? "0" : "") + timestamp.getMinutes());
		// Seconds
		output = output.replace(/%S/, (timestamp.getSeconds() <= 9 ? "0" : "") + timestamp.getSeconds());
		// Days
		output = output.replace(/%T/, (timestamp.getDate() <= 9 ? "0" : "") + timestamp.getDate());
		output = output.replace(/%d/, timestamp.getDate());
		output = output.replace(/%D/, _LANG_["day" + timestamp.getDay()]);
		// Months
		output = output.replace(/%m/, (timestamp.getMonth() <= 9 ? "0" : "") + timestamp.getMonth());
		output = output.replace(/%M/, _LANG_["month" + timestamp.getMonth()]);
		// Years
		output = output.replace(/%Y/, timestamp.getFullYear());
		return output;
	}
	
	function _vOS_themeSwitch(theme)
	{
		// Save the current theme into a global variable
		this.theme = theme;
		// Load the new theme.
		document.getElementById("link_vTheme").href = "themes\/" + theme + "\/theme.css";
		// Load the config.def file into memory.
		var _vOS_theme_definition = new XMLHttpRequest();
		_vOS_theme_definition.open("GET", "themes\/" + theme + "\/config.def", false);
		_vOS_theme_definition.send("");
		eval(_vOS_theme_definition.responseText);
		// Check if the theme has changed
		this.themeSwitched();
	}
	
	function _vOS_themeSwitched()
	{
		var x = 0;
		
		if(document.getElementById("_vOS_stylechange").offsetWidth == 0)
		{
			x = 0;
			// Let all windows adjust their sizes depending on the new
			// window size configuration file.
			_vOS_resize();
			// Now preload the images.
			// vOS.preloadImages();
		}
		else
		{
			x++;
			if(x == 10)
			{
				alert("Style didn't changed!");
			}
			else
			{
				window.setTimeout("vOS.themeSwitched()",50 * x);
			}
		}
	}
	
	function _vOS_preloadImages()
	{
		// Preload the images from the CSS file, not compatible with Opera 8.0 >
		if (document.styleSheets)
		{
			for (j=0; j < document.styleSheets.length; j++)
			{
				if (document.styleSheets[j].rules)
				{
					styleSheetArray = document.styleSheets[j].rules;
				}
				else
				{
					styleSheetArray = document.styleSheets[j].cssRules;
				}
				styleSheetPath = document.styleSheets[j].href.substr(0, document.styleSheets[j].href.lastIndexOf("/") + 1);
				// Loop through all CSS properties to see if url() is used
				for (i=0; i < styleSheetArray.length; i++)
				{
					styleSheetText = styleSheetArray[i].style.background + styleSheetArray[i].style.backgroundImage;
					if (styleSheetText.indexOf("url(") > -1)
					{
						styleSheetImage = styleSheetPath + styleSheetText.substr(styleSheetText.indexOf("url(") + 4, styleSheetText.indexOf(")") - styleSheetText.indexOf("url(") - 4);
						if (document.images)
						{
							// Preload images
							vOS.screen_container.innerHTML += "<div style=\"visibility: hidden; width: 0px; height: 0px; position: absolute; top: 0px; left: 0px;\"><img src=\"" + styleSheetImage + "\"></div>";
						}
					}
				}
			}
		}
	}
	
	function _vOS_data(_vOS_caller_type, _vOS_callback, _vOS_file, _vOS_parameters_array, _vOS_callbackparameters, _vOS_vApp_pid)
	{
		// How to use:
		// - vOS.data("vApp", <callback function>, <file to load>, <array with parameters>, <a value to return to the callback function>, <this.vApp_pid>)
		// - vOS.data("vOS", <callback function>, <file to load>, <array with parameters>, <a value to return to the callback function>)
		// Callbackfunction examples:
		// - this.ondata = function(data, parameters)
		// - ondatareceive(data, parameters)
		var _vOS_data_request = new Array();
		_vOS_data_request["xml"] = new XMLHttpRequest();
		_vOS_data_request["id"] = _vOS_vApp_pid;
		if (_vOS_data_request["xml"])
		{
			_vOS_data_request["xml"].onreadystatechange = function()
			{
				if (_vOS_data_request["xml"].readyState == 4 && _vOS_data_request["xml"].status == 200)
				{
					_vOS_data = _vOS_data_request["xml"].responseText;
					// Decode the received data
					vOS.vBase.header(_vOS_data_request["xml"].getResponseHeader("Content-Identifier"));
					_vOS_data = vOS.vBase.decode(_vOS_data);
					// Create an object of the callback function
					if (_vOS_callback.substr(_vOS_callback.length - 2) == "()")
					{
						// Remove the brackets (if included) from the functionname
						_vOS_callback = _vOS_callback.substr(0, _vOS_callback.length - 2);
					}
					if (_vOS_callback.substr(0, 5) == "this.")
					{
						// If the function name is preceded by "this.", remove the "this." part
						_vOS_callback = _vOS_callback.substr(5);
					}
					// Prepare the function which will receive the data
					if (_vOS_caller_type == "vApp")
					{
						_vOS_temp = eval("vOS.arr_vApps[" + _vOS_data_request["id"] + "]." + _vOS_callback + ";");
					}
					else if (_vOS_caller_type == "vOS")
					{
						_vOS_temp = eval(_vOS_callback);
					}
					// Execute the function
					_vOS_temp(_vOS_data, _vOS_callbackparameters);					
					// Synchronize the vOS time
					vOS.vTime_change(_vOS_data_request["xml"].getResponseHeader("Date"));
					return;
				}
			}
			_vOS_data_request["xml"].open("POST", "php/data.php", true);
			_vOS_data_request["xml"].setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
			// Get parameters from the _vApp_parameters_array array
			var _vOS_parameters = "";
			// Check if parameters are given
			if (_vOS_parameters_array)
			{
				for (var i = 0; i < _vOS_parameters_array.length; i = i + 2)
				{
					// Replace | by || to make sure the server can decode the data properly
					_vOS_parameters_array[i] = _vOS_parameters_array[i];
					_vOS_parameters_array[i + 1] = _vOS_parameters_array[i + 1].replace(new RegExp(/\|/g), "||");
					_vOS_parameters += "|" + _vOS_parameters_array[i] + "|" + _vOS_parameters_array[i + 1];
				}
				_vOS_parameters = _vOS_parameters.substr(1);
			}
			// Create a key and send it to the server
			var tempsendkey = vOS.vBase.generate_key();
			_vOS_data_request["xml"].setRequestHeader("Content-Identifier", tempsendkey);
			// Encode the parameters which are to be send to the server
			vOS.vBase.header(tempsendkey);
			_vOS_parameters = vOS.vBase.encode(_vOS_parameters);
			// Request the data from the server with the specified parameters
			_vOS_data_request["xml"].send("f=" + _vOS_file + "&d=" + _vOS_parameters);
		}
	}
	
	function _vOS_logout()
	{
		//var _vLogout = new XMLHttpRequest();
		//_vLogout.open("POST", "php\/logout.php", false);
		//_vLogout.send("");
	}
	
	function _vOS_disable()
	{
		// Disables user input completely
		if (!this.screen_container_disabled)
		{
			this.screen_container_disabled = document.createElement("DIV");
			this.screen_container_disabled.style.position 	= "absolute";
			this.screen_container_disabled.style.background = "url(images/disable.png)";
			this.screen_container_disabled.style.left		= "0px";
			this.screen_container_disabled.style.top		= "0px";
			this.screen_container_disabled.style.width		= "10000px";
			this.screen_container_disabled.style.height		= "10000px";
			this.screen_container_disabled.style.zIndex 	= "9999998";
			this.screen_container.appendChild(this.screen_container_disabled);
		}
	}
	
	function _vOS_enable()
	{
		// If the screen is disabled, enable it
		if (this.screen_container_disabled)
		{
			this.screen_container_disabled.parentNode.removeChild(this.screen_container_disabled);
			this.screen_container_disabled = null;
		}
	}
}

add_counter(10);