// Class prototype
// ---------------
function vTaskbar()
{
	// Initialize functions
	// --------------------
	this.create			= _vTaskbar_create;
	this.show			= _vTaskbar_show;
	this.hide			= _vTaskbar_hide;
	this.setTime			= _vTaskbar_setTime;
	this.moveRight		= _vTaskbar_moveRight;
	this.moveLeft			= _vTaskbar_moveLeft;
	this.addIcon			= _vTaskbar_addIcon;
	this.button			= _vTaskbar_button;
	this.eventButton		= _vTaskbar_eventButton;

	// Initialize properties
	// ---------------------
	this.scrollTimer;
	this.activeButton = 'a';
	this.scrollViewTimer = 0;
	this.scrollViewLeft = 0;
	// Functions prototype
	// -------------------
	function _vTaskbar_create()
	{
		// taskbar IE fix
		this.taskbar_fix = document.createElement("DIV");
		this.taskbar_fix.style.position = "absolute";
		this.taskbar_fix.style.width = "100%";
		this.taskbar_fix.style.height = "1px";
		this.taskbar_fix.style.bottom = "-1px";
		this.taskbar_fix.style.fontSize = "0px";
		this.taskbar_fix.style.zIndex = "9999995";
		this.taskbar_fix.style.backgroundColor = "#FFFFFF";
		vOS.screen_container.appendChild(this.taskbar_fix);
		
		// taskbar container
		this.taskbar_container = document.createElement("DIV");
		this.taskbar_container.className = "taskbar";
		this.taskbar_container.style.zIndex = "9999996";
		vOS.screen_container.appendChild(this.taskbar_container);
		
		// taskbar start button
		this.taskbar_start = document.createElement("DIV");
		this.taskbar_start.onmouseover = _vTaskbar_activate_event;
		this.taskbar_start.onmouseout  = _vTaskbar_activate_event;
		this.taskbar_start.onmousedown = _vTaskbar_activate_event;
		this.taskbar_start.className = "taskbar_start";
		this.taskbar_start.title = _LANG_["clickheretobegin"];
		this.taskbar_container.appendChild(this.taskbar_start);
		
		// taskbar buttons
		this.taskbar_buttonScroller = document.createElement("DIV");
		//this.taskbar_buttonScroller.scroll = "yes";
		this.taskbar_buttonScroller.style.overflow = "hidden";
		this.taskbar_buttonScroller.className = "taskbar_buttonScroller";
		this.taskbar_container.appendChild(this.taskbar_buttonScroller);
		
		this.taskbar_buttons = document.createElement("DIV");
		//this.taskbar_buttons.style.width = "5000px";
		this.taskbar_buttons.style.left = "0px";
		this.taskbar_buttons.className = "taskbar_buttons";
		this.taskbar_buttonScroller.appendChild(this.taskbar_buttons);
		
		// taskbar group
		this.taskbar_group = document.createElement("DIV");
		this.taskbar_group.className = "taskbar_group";
		this.taskbar_container.appendChild(this.taskbar_group);
		
		// taskbar scroll
		this.taskbar_scroll = document.createElement("DIV");
		this.taskbar_scroll.className = "taskbar_scroll";
		this.taskbar_group.appendChild(this.taskbar_scroll);
		
		// taskbar scroll left
		this.taskbar_scroll_left = document.createElement("DIV");
		this.taskbar_scroll_left.className = "taskbar_scroll_left";
		this.taskbar_scroll_left.title = _LANG_["scrolltaskbarleft"];
		this.taskbar_scroll_left.onmousedown = function (e)
		{
			if (!e)
			{
				e = event;
			}
			// Only scroll when the left mouse button is used
			mousebutton = e.which ? e.which : e.button;
			if (mousebutton == 1)
			{
				_vTaskbar_moveLeft();
			}
		}
		this.taskbar_scroll_left.onmouseup = function() { window.clearTimeout(vOS.taskbar.scrollTimer); }
		this.taskbar_scroll_left.onmouseout = function() { window.clearTimeout(vOS.taskbar.scrollTimer); }
		this.taskbar_scroll.appendChild(this.taskbar_scroll_left);
		
		// taskbar scroll right
		this.taskbar_scroll_right = document.createElement("DIV");
		this.taskbar_scroll_right.className = "taskbar_scroll_right";
		this.taskbar_scroll_right.title = _LANG_["scrolltaskbarright"];
		this.taskbar_scroll_right.onmousedown = function (e)
		{
			if (!e)
			{
				e = event;
			}
			// Only scroll when the left mouse button is used
			mousebutton = e.which ? e.which : e.button;
			if (mousebutton == 1)
			{
				_vTaskbar_moveRight();
			}
		}
		this.taskbar_scroll_right.onmouseup = function() { window.clearTimeout(vOS.taskbar.scrollTimer); }
		this.taskbar_scroll_right.onmouseout = function() { window.clearTimeout(vOS.taskbar.scrollTimer); }
		this.taskbar_scroll.appendChild(this.taskbar_scroll_right);
		
		// taskbar icons
		this.taskbar_icons = document.createElement("DIV");
		this.taskbar_icons.className = "taskbar_icons";
		this.taskbar_group.appendChild(this.taskbar_icons);
		
		// taskbar clock
		this.taskbar_clock = document.createElement("DIV");
		this.taskbar_clock.className = "taskbar_clock";
		this.taskbar_clock.style.cursor = "default";
		this.taskbar_group.appendChild(this.taskbar_clock);
		this.taskbar_clock_time = document.createTextNode("00:00");
		this.taskbar_clock.appendChild(this.taskbar_clock_time);
	}
	function _vTaskbar_show()
	{
		this.taskbar_fix.style.visibility = "visible";
		this.taskbar_container.style.visibility = "visible";
	}
	function _vTaskbar_hide()
	{
		this.taskbar_fix.style.visibility = "hidden";
		this.taskbar_container.style.visibility = "hidden";
	}
	function _vTaskbar_addIcon(_vApp_id,_vTaskbar_name,_vTaskbar_icon, _vTaskbar_title)
	{
		// Functions inside this function:
		this.removeIcon = _vTaskbar_removeIcon;
		this.setIcon = _vTaskbar_setIcon;
		this.setTitle = _vTaskbar_setTitle;
		//Normal settings
		this.taskbar_icon_image = document.createElement("DIV");
		this.taskbar_icon_image.style.background = "url(" + _vTaskbar_icon + ") no-repeat";
		this.taskbar_icon_image.style.width = "16px";
		this.taskbar_icon_image.style.height = "16px";
		this.taskbar_icon_image.title = _vTaskbar_title;
		this.taskbar_icon_image.vApp_pid = _vApp_id;
		this.taskbar_icon_image.vTaskbar_name = _vTaskbar_name;
		this.taskbar_icon_image.onclick = function()
		{
			// click event
			eval("vOS.arr_vApps["+_vApp_id+"].onEvent('taskbar', '"+_vTaskbar_name+"', 'click');");
		}
		this.taskbar_icon_image.ondblclick = function()
		{
			// doubleclick event
			eval("vOS.arr_vApps["+_vApp_id+"].onEvent('taskbar', '"+_vTaskbar_name+"', 'dblclick');");
		}
		this.taskbar_icon_image.onmousedown = function(e)
		{  
			if (!e)
			{
				var e = window.event;
			}
			_vClick = e.which ? e.which : e.button;
			if(_vClick == 2 || _vClick == 3)
			{
				// click event right
				eval("vOS.arr_vApps["+_vApp_id+"].onEvent('taskbar', '"+_vTaskbar_name+"', 'rightclick');");
			}
		}
		vOS.taskbar.taskbar_icons.appendChild(this.taskbar_icon_image);
		//Keep the taskbar putton in place
		if (vOS.arr_vWindows[vOS.activeWindow].taskbar == true)
			vOS.arr_vWindows[vOS.activeWindow].taskbar_button.scrollView();
		//Now the real functions:
		function _vTaskbar_setIcon(_vTaskbar_icon)
		{
			this.taskbar_icon_image.style.background = "url(images/" + _vTaskbar_icon + ") no-repeat";
		}
		function _vTaskbar_setTitle(_vTaskbar_title)
		{
			this.taskbar_icon_image.title = _vTaskbar_title;
		}
		function _vTaskbar_removeIcon()
		{
			vOS.taskbar.taskbar_icons.removeChild(this.taskbar_icon_image);
			//Keep the taskbar putton in place
			if (vOS.arr_vWindows[vOS.activeWindow].taskbar == true)
			{
				vOS.arr_vWindows[vOS.activeWindow].taskbar_button.scrollView();
			}
		}
	}
	function _vTaskbar_setTime(_vTaskbar_time)
	{
		// Initialize properties
		// ---------------------
		this.time = _vTaskbar_time;
		// Execute code
		// ------------
		// Set the clock
		this.taskbar_clock.innerHTML = vOS.vTime_format("ShortTimeFormat");
		// Set the title when hovering over the clock
		this.taskbar_clock.title = vOS.vTime_format("LongDateFormat");
	}
	function _vTaskbar_activate_event(e)
	{
		if (!e)
		{
			var e = window.event;
		}
		var targ = vOS.event(e);
		// Process mouse events for the start button
		switch (e.type)
		{
			case "mouseover":
				targ.className = "taskbar_start_hover";
				break;
			case "mouseout":
				targ.className = "taskbar_start";
				break;
			case "mousedown":
				// Only respond when the left mouse button is used
				mousebutton = e.which ? e.which : e.button;
				if (mousebutton == 1)
				{
					targ.className = "taskbar_start_down";
				}
				break;
		}
	}
	function _vTaskbar_moveRight()
	{
		window.clearTimeout(vOS.taskbar.scrollTimer);
		var temp = parseInt(vOS.taskbar.taskbar_buttons.style.left + 0,10) - 5;
		vOS.taskbar.scrollTimer = window.setTimeout("vOS.taskbar.moveRight()", 25);
		vOS.taskbar.taskbar_buttons.style.left = temp + "px";
	}
	function _vTaskbar_moveLeft()
	{
		window.clearTimeout(vOS.taskbar.scrollTimer);
		var temp = parseInt(vOS.taskbar.taskbar_buttons.style.left + 0,10) + 5;
		if(temp <= 0)
		{
			vOS.taskbar.scrollTimer = window.setTimeout("vOS.taskbar.moveLeft()", 25);
			vOS.taskbar.taskbar_buttons.style.left = temp + "px";
		}
	}
	function _vTaskbar_button(vWindow_id, title, icon)
	{
		// Initialize functions
		// --------------------
		this.setTitle = _vTaskbar_setTitle;
		this.setIcon  = _vTaskbar_setIcon;
		this.setState = _vTaskbar_setState;
		this.clear       = _vTaskbar_delete;
		this.scrollView  = _vTaskbar_scrollView;
		// Global properties
		
		// Create the taskbar
		this.button = document.createElement("DIV");
		this.button.id = "taskbar_button";
		this.button.vWindow_id = vWindow_id;
		this.button.title = title;
		this.button.className = "taskbar_button";
		this.button.onmouseover = vOS.taskbar.eventButton;
		this.button.onmouseout = vOS.taskbar.eventButton;
		this.button.onmouseup = vOS.taskbar.eventButton;
		this.button.onmousedown = vOS.taskbar.eventButton;
		vOS.taskbar.taskbar_buttons.appendChild(this.button);
		
		this.button_icon = document.createElement("DIV");
		this.button_icon.className = "taskbar_button_icon";
		this.button.appendChild(this.button_icon);
		
		this.button_icon_image = document.createElement("DIV");
		this.button_icon_image.style.background = "url("+icon+") no-repeat";
		this.button_icon_image.style.width = "16px";
		this.button_icon_image.style.height = "16px";
		this.button_icon.appendChild(this.button_icon_image);
		
		this.button_text = document.createElement("DIV");
		this.button_text.className = "taskbar_button_text";
		this.button_text.style.textOverflow = "ellipsis";
		this.button_text.style.whiteSpace = "nowrap";
		this.button.appendChild(this.button_text);
		
		this.button_title = document.createTextNode(title);
		this.button_text.appendChild(this.button_title);
		
		// Functions
		// ---------
		function _vTaskbar_setTitle(title)
		{
			this.title = title;
			this.button_text.innerHTML = title;
		}
		
		function _vTaskbar_setIcon(icon)
		{
			this.button_icon_image.style.background = "url(" + icon + ")";
			this.button_icon_image.style.backgroundRepeat = "no-repeat";
		}
		
		function _vTaskbar_setState(state)
		{
			switch(state)
			{
				case "normal":
					this.button.className = "taskbar_button";
					this.button_icon.className = "taskbar_button_icon";
					this.button_text.className = "taskbar_button_text";
					break;
				case "hover":
					this.button.className = "taskbar_button_hover";
					this.button_icon.className = "taskbar_button_icon_hover";
					this.button_text.className = "taskbar_button_text_hover";
					break;
				case "active":
					this.button.className = "taskbar_button_active";
					this.button_icon.className = "taskbar_button_icon_active";
					this.button_text.className = "taskbar_button_text_active";
					break;
				case "activehover":
					this.button.className = "taskbar_button_activehover";
					this.button_icon.className = "taskbar_button_icon_activehover";
					this.button_text.className = "taskbar_button_text_activehover";
					break;
				case "down":
					this.button.className = "taskbar_button_down";
					this.button_icon.className = "taskbar_button_icon_down";
					this.button_text.className = "taskbar_button_text_down";
					break;
				case "blink":
					this.button.className = "taskbar_button_blink";
					this.button_icon.className = "taskbar_button_icon_blink";
					this.button_text.className = "taskbar_button_text_blink";
					break;
			}
		}
		
		function _vTaskbar_delete()
		{
			this.button.parentNode.removeChild(this.button);
		}
		
		function _vTaskbar_scrollView()
		{
			var left = (this.button.offsetLeft + this.button.offsetWidth - (vOS.width()-(vOS.taskbar.taskbar_group.offsetWidth + vOS.taskbar.taskbar_start.offsetWidth + 50))) * -1;
			
			left = left <= 0 ? left : 0;
			var temp = vOS.taskbar.scrollViewTimer == 0 ? parseInt(vOS.taskbar.taskbar_buttons.style.left+0,10) : vOS.taskbar.scrollViewLeft;
			vOS.taskbar.scrollViewLeft = left;
			if(temp > left)
			{
				var y = vOS.taskbar.scrollViewTimer;
				vOS.taskbar.scrollViewTimer += (Math.ceil((temp-left) / 20)+1) * 25;
				for(x=temp;x>left;x=x-20)
				{
					window.setTimeout("vOS.taskbar.taskbar_buttons.style.left = '"+x+"px';vOS.taskbar.scrollViewTimer-=25;",y);
					y += 25;
				}
				window.setTimeout("vOS.taskbar.taskbar_buttons.style.left = '"+left+"px';vOS.taskbar.scrollViewTimer-=25;",y);
			}
			else if(temp < left)
			{
				var y = vOS.taskbar.scrollViewTimer;
				vOS.taskbar.scrollViewTimer += (Math.ceil((left-temp) / 20)+1) * 25;
				for(x=temp;x<left;x=x+20)
				{
					window.setTimeout("vOS.taskbar.taskbar_buttons.style.left = '"+x+"px';vOS.taskbar.scrollViewTimer-=25;",y);
					y += 25;
				}
				window.setTimeout("vOS.taskbar.taskbar_buttons.style.left = '"+left+"px';vOS.taskbar.scrollViewTimer-=25;",y);
			}
		}
	}
	function _vTaskbar_eventButton(e)
	{
		if (!e)
		{
			var e = window.event;
		}
		// Get the div on which is clicked
		var targ = vOS.event(e);
		// Loop through the objects until you reach the window_container div
		while (targ.id != "taskbar_button")
		{
			targ = targ.parentNode;
		}
		var that = vOS.arr_vWindows[targ.vWindow_id];
		switch (e.type)
		{
			case "mouseover":
				if (vOS.taskbar.activeButton == targ.vWindow_id)
				{
					that.taskbar_button.setState("down");
				}
				else if (!vOS.iWindow.action && vOS.taskbar.activeButton == 'a' && !that.blinking['blink'])
				{
					if (vOS.activeWindow == targ.vWindow_id)
					{
						that.taskbar_button.setState("activehover");
					}
					else
					{
						that.taskbar_button.setState("hover");
					}
				}
				break;
			case "mouseout":
				if (vOS.activeWindow == targ.vWindow_id)
				{
					that.taskbar_button.setState("active");
				}
				else if(!that.blinking['blink'])
				{
					that.taskbar_button.setState("normal");
				}
				break;
			case "mouseup":
				var mousebutton = e.which ? e.which : e.button;
				if (vOS.taskbar.activeButton == targ.vWindow_id)
				{
					if (vOS.activeWindow != targ.vWindow_id)
					{
						// Switch to the window object's setActive() function
						if (that.state == "minimize")
						{
							that.setState(that.lastState);
						}
						that.setActive();
						// Check if it's active, if not, minimize the window
						that.taskbar_button.setState("activehover");
					}
					else
					{
						if (that.window_minimize.buttonName == 'minimize_disabled' || mousebutton != 1 || that.disabled == 1)
						{
							that.taskbar_button.setState("activehover");
						}
						else
						{
							that.minimize();
							that.taskbar_button.setState("hover");
						}
					}
				}
				break;
			case "mousedown":
				// Do not respond if the middle button is used
				
				var mousebutton = e.which ? e.which : e.button;
				if (!(mousebutton == 1 || mousebutton == 2 || mousebutton == 3))
				{
					return;
				}
				if (mousebutton == 2 || mousebutton == 3)
				{
					var maximize = (that.window_maximize.buttonName == 'maximize_disabled' || (that.window_maximize.buttonName == 'normalize' && that.state != 'minimize')) ? 1 : 0;
					var normalize = ((that.window_maximize.buttonName == 'maximize_disabled' || that.window_maximize.buttonName == 'maximize') && that.state != 'minimize') ? 1 : 0;
					var minimize = (that.window_minimize.buttonName == 'minimize_disabled' || that.state == 'minimize') ? 1 : 0;
					var close = that.window_close.buttonName == 'close_disabled' || that.disabled == 1 ? 1 : 0;
					var popupMenu = 
					[
						[_LANG_["maximize"],"images/icons/icoMaximize.gif","vOS.arr_vWindows[" + targ.vWindow_id + "].maximize()",maximize],
						[_LANG_["normalize"], "images/icons/icoNormalize.gif", "vOS.arr_vWindows[" + targ.vWindow_id + "].normalize()",normalize],
						[_LANG_["minimize"], "images/icons/icoMinimize.gif", "vOS.arr_vWindows[" + targ.vWindow_id + "].minimize()",minimize],
						["-"],
						[_LANG_["close"],"images/icons/icoClose.gif","vOS.arr_vApps[" + that.vApp_pid + "].onEvent('" + vOS.arr_vWindows[targ.vWindow_id].vWindow_name + "', null, 'close');",close]
					];
					vOS.vMenu.system(e.clientY, e.clientX, popupMenu);
					vOS.vMenu.menu_click = true;
				}
				else
				{
					that.taskbar_button.setState("down");
					vOS.taskbar.activeButton = targ.vWindow_id;
					vOS.iWindow.action = 1;
					
					document.onmouseup = function()
					{
						vOS.iWindow.action = 0;
						vOS.taskbar.activeButton = 'a';
						document.onmouseup = null;
					}
				}

				break;
		}
	}
} // End class prototype
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