/**

 * Copyright (c) 2009-2010 Symbian Foundation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 * 

 * Contributors:

 * 

 * Description:

 * 

 */

/**

 * widget object constructor

 * @param {void}

 *     widget()

 * @return {void}

 */ 

if (typeof window.menu == "undefined" || !window.menu) 

{

	window.menu = 

	{

		author : 'Nokia WRT Emulation Library',

		items : [],

		index : null,

		isDimmed : false,	

		//	Event triggers

		onShow : null,

		onRightSoftKeySelect : null,

	};

	/*

		Function 	:	menu.append()

		Argument	:	MenuItem Object

		Returns		:	Void

		Description	:	Function appends MenuItem to a Menu Object

	*/

	menu.append = function(MenuItem)

	{

		if(this.allowedTypeOf(MenuItem))

		{

			var i;

			var flag = true;

			try{

			for(var key in this.items)

			{

				if(this.items[key].id == MenuItem.id)

				{	

					flag = false; 

					break; 

				}

			}} catch(e){ }

			if(flag)

			{

				//	MenuItem.parent = this;

				this.items[MenuItem.id] = MenuItem;

			}

		}

	}

	/*

		Function 	:	menu.remove()

		Argument	:	MenuItem Object

		Returns		:	Void

		Description	:	Function Remove the menuItem and its children from the container options menu.

	*/

	menu.remove = function(MenuItem)

	{

		if(!this.allowedTypeOf(MenuItem))

			return false;

		var flag = false;

		if (this.items.length) {

			for (var key in this.items) {

				if (this.items[key].id == MenuItem.id) {

					flag = true;

					break;

				}

			}

		}

		if(flag)

		{

			this.items.splice(key, 1);

		}

	}

	/*

		Function 	:	menu.clear()

		Argument	:	Void

		Returns		:	Void

		Description	:	Clears (deletes) all the menu items in the menupane.

	*/

	menu.clear = function()

	{

		try

		{

			this.items.splice(0, this.items.length);

		}catch(e){}

	}

	/*

		Function 	:	Menu.getMenuItemById(id)

		Argument	:	Integer

		Returns		:	MenuItem Object

		Description	:	Function get the MenuItem Object with the reference of id

	*/

	menu.getMenuItemById = function(id)

	{

		var menuItemRef = menu.menuItemExhistsById(this, id, 0);

		if(this.allowedTypeOf(menuItemRef))

			return menuItemRef;

		else

			return undefined;

	}

	/*

		Function 	:	Menu.getMenuItemByName(name)

		Argument	:	String

		Returns		:	MenuItem Object

		Description	:	Function get the MenuItem Object with the reference of String name

	*/

	menu.getMenuItemByName = function(name)

	{

		var menuItemRef = menu.menuItemExhistsById(this, name, 1);

	//	if(menuItemRef !=null)

		if(this.allowedTypeOf(menuItemRef))

			return menuItemRef;

		else

			return undefined;

	}

	/*

		Function 	:	Menu.setRightSoftkeyLabel()

		Argument	:	String, Function

		Returns		:	Void

		Description	:	Set the label of the right soft key to str. This enables the default text 

						to be changed from exit and a new function assigned by setting a callbackfunction

	*/

	menu.setRightSoftkeyLabel = function(label, callback)

	{

		window.menu = this;

		try

		{

			if(typeof label != '' && !label)

				this.setExitToRsk();			

			else if(typeof callback != 'function' && !callback)

				this.setExitToRsk();			

			else if (_BRIDGE_REF.nokia.menu.setRsk(callback)) {

				_BRIDGE_REF.parent.$("#RskLabel > a")[0].innerHTML = label;

				_BRIDGE_REF.nokia.menu.rsk_label = label;

				_BRIDGE_REF.nokia.menu.rsk_event = callback;

				_BRIDGE_REF.nokia.menu.is_rsk_overridden = true;

			}

			else 

				this.setExitToRsk();

		}catch(e){ 

			// alert(e);

		 }

	}

	menu.setExitToRsk = function()

	{

		this.onRightSoftKeySelect = null;

		_BRIDGE_REF.nokia.menu.is_rsk_overridden = false;

		_BRIDGE_REF.nokia.menu.rsk_label = '';

		_BRIDGE_REF.nokia.menu.rsk_event = null;

		_BRIDGE_REF.parent.$("#RskLabel > a")[0].innerHTML = 'Exit';

		_BRIDGE_REF.nokia.menu.setRsk(function(){

			_BRIDGE_REF.nokia.menu.exit();

		});

	}

	/*

		Function 	:	Menu.showSoftkeys()

		Argument	:	Void

		Returns		:	Void

		Description	:	Makes the softkeys visible. By default the softkeys are not visible

	*/

	menu.showSoftkeys = function()

	{

		/*

		 *  Shows showSoftkeys

		 */

		_BRIDGE_REF.nokia.menu.softkeys_visibility = true;

		_BRIDGE_REF.nokia.menu.showSoftKeys();

	}

	/*

		Function 	:	Menu.hideSoftkeys()

		Argument	:	Void

		Returns		:	Void

		Description	:	Makes the softkeys invisible. By default the softkeys are not visible. 

	*/

	menu.hideSoftkeys = function()

	{

		/*

		 *  Hide showSoftkeys

		 */

		_BRIDGE_REF.nokia.menu.softkeys_visibility = false;

		_BRIDGE_REF.nokia.menu.hideSoftKeys();

	}

	/*	

	 *  

	 * ----------------------------------------------------------------

	 * Exta Functionalities which helps to make main functions to work

	 * ----------------------------------------------------------------

	 *  

	*/

	menu.cancel = function()

	{

		_BRIDGE_REF.nokia.menu.cancel();

	}

	menu.exit = function()

	{

		_BRIDGE_REF.nokia.menu.exit();

	}

	menu.triggeLSKEvent = function()

	{

		if(typeof(window.menu.onShow) == 'function')

		{

				window.menu.onShow();

		}

		_BRIDGE_REF.parent.$('#softKeysPane').show();

		this.show();

	}

	menu.triggerEvent = function(MenuItemId)

	{

		try{

			var menuItemRef = this.menuItemExhistsById(this, MenuItemId, 0);

			if(menuItemRef != null)

			{

				if(typeof menuItemRef.onSelect == 'function')

					menuItemRef.onSelect(MenuItemId);

				if(_BRIDGE_REF.helper.getElementsLengthInObject(menuItemRef.items))

					this.show(MenuItemId);

				else

					this.cancel();

			}else

			{

				this.show();

			}

		}

		catch(e)

		{

			alert('triggeEvent: '+MenuItemId+' >> '+e);

		}

	}

	menu.hasChild = function(parentId)

	{

		for(var i in this.items)

		{

			if(this.items[i].parentId == parentId)

			{	

				 return true;

			}

		}

		return false;

	}

	menu.allowedTypeOf = function(MenuItem)

	{

		try

		{

			if( (typeof(MenuItem) == 'object') && (MenuItem.type == 'MenuItem'))

				return true;			

		}

		catch(e)

		{

			return false;

		}

	}

	menu.show = function(parentId)

	{

		try

		{

			var menuItemsPane = _BRIDGE_REF.parent.$('#MenuItemsArea')

			menuItemsPane = menuItemsPane[0];

			menuItemsPane.innerHTML = '';

			var ul = document.createElement('ul');

			var ele = window.menu;

			if(typeof parentId != 'undefined' && typeof parentId == 'object')

			{

				if (typeof window.menu.onShow != null && typeof window.menu.onShow == 'function') {

					window.menu.onShow();

				}

			}

			if(typeof parentId == 'number')

			{

				var tempRef = menu.menuItemExhistsById(ele, parentId, 0);

				if(typeof parentId != 'undefined' && typeof tempRef != 'undefined')

					ele = tempRef;

			}

			if(_BRIDGE_REF.helper.getElementsLengthInObject(ele.items))

			{

				for(var key in ele.items)

				{

					if(!ele.items[key].isDimmed){

						try{

							ul.appendChild(menu.create_menuElement(ele.items[key]));

						}catch(e){  }

					}

				}

				if(typeof parentId == 'number' && _BRIDGE_REF.helper.getElementsLengthInObject(ele.items))

				{

					if(ele.parent)

						ul.appendChild(menu.create_normalMenuItem('Back', ele.parent.id));	

					else

						ul.appendChild(menu.create_normalMenuItem('Back', null));	

				}

				else

				{

					ul.appendChild(menu.create_exitMenuItem());	

				}

				if(_BRIDGE_REF.helper.getElementsLengthInObject(ele.items) > 5)

					menuItemsPane.style.overflowY = 'scroll';

				else

					menuItemsPane.style.overflowY = 'hidden';

			}

			else

			{

				menuItemsPane.style.overflowY = 'hidden';

				ul.appendChild(menu.create_exitMenuItem());	

			}

			menuItemsPane.innerHTML = '<ul>'+ul.innerHTML+'</ul>';

			_BRIDGE_REF.nokia.menu.show();

		}

		catch(e)

		{

			alert('menu.show: '+e);

		}

	}

/*

*

*	HELPER FUNCTIONS

*

*/

	menu.menuItemExhistsById = function(menuReference, value, argumentType)

	{

		var flag = null;

		for(var key in menuReference.items)

		{

			if(!argumentType)

			{

				if(menuReference.items[key].id == value)

				{	

					flag = true; 

					break; 

				}

			}

			else

			{

				if(menuReference.items[key].name == value)

				{	

					flag = true; 

					break; 

				}

			}

			if(menuReference.items[key].items != undefined && menuReference.items[key].items.length)

			{

				var temp = this.menuItemExhistsById(menuReference.items[key], value, argumentType);

				if(temp)

					return temp;

			}

		}

		if(flag)

		{

			// crate a package and send it

			menuReference.items[key].index = key;

			return menuReference.items[key];

		}

		else

			return null;

	}

	menu.create_menuElement = function(MenuItem) 

	{

		var listitem = document.createElement('li');

		listitem.id = MenuItem.id;

		listitem.setAttribute('onClick', 'javascript:NOKIA.emulator.child.menu.triggerEvent('+MenuItem.id+');');

	    var anchor = document.createElement('a');

		anchor.id = 'subMenuItem_'+MenuItem.id;

		anchor.innerHTML = MenuItem.name;

		if(_BRIDGE_REF.helper.getElementsLengthInObject(MenuItem.items))

	 	{  

			anchor.className = 'subMenuItem';

			anchor.setAttribute('href', 'javascript:NOKIA.emulator.child.menu.show('+MenuItem.id+');');

		}

	    listitem.appendChild(anchor);

		return (listitem);

	}

	menu.create_normalMenuItem = function(MenuTitle, index) 

	{

	    var listitem = document.createElement('li');

	    var anchor = document.createElement('a');

		anchor.id = 'subMenuItem_BACK';

		anchor.innerHTML = MenuTitle;

		if (MenuTitle == 'Back') {

			listitem.className = 'exitOrBackBtn';

			anchor.setAttribute('href', 'javascript:NOKIA.emulator.child.menu.triggerEvent(' + index + ');');

		}

		else 

			anchor.setAttribute('href', 'javascript:NOKIA.emulator.child.menu.triggerEvent(' + index + ');');

		listitem.appendChild(anchor);

		return (listitem);

	}

	menu.create_exitMenuItem = function() 

	{

	    var listitem = document.createElement('li');

		listitem.className = 'exitOrBackBtn';

	    var anchor = document.createElement('a');

		anchor.id = 'subMenuItem_EXIT';

		anchor.innerHTML = 'Exit';

		anchor.setAttribute('href', 'javascript:NOKIA.emulator.child.menu.exit();');

		listitem.setAttribute('onClick', 'javascript:NOKIA.emulator.child.menu.exit();');

	    listitem.appendChild(anchor);

		return (listitem);

	}

	menu.triggeRSK = function()

	{

		try {

			if (window.menu) {

				if (childToParent_Reference.$('softKeysPane').style.display != 'none') {

					if (window.menu.onRightSoftKeySelect != null) {

						window.menu.onRightSoftKeySelect();

						window.menu.cancel();

					}

					else {

						window.menu.cancel();

					}

				}

			}

		}catch(e)

		{

			alert(e);

		}

	}

	menu.triggeLSK = function()

	{

		if(window.menu)

		{

			window.menu.show();

			if(typeof(window.menu.onShow) == 'function')

			{

				if(window.menu.onShow)

				{

					window.menu.onShow();

				}

			}

		}

	}

	//	make TRUE menu.js script loaded

	window.parent.NOKIA.scriptsLoaded.menu = true;

}