BansheeEngine/SBansheeEditor/Include/BsMenuItemManager.h

//********************************** Banshee Engine (www.banshee3d.com) **************************************************//
//**************** Copyright (c) 2016 Marko Pintera ([email protected]). All rights reserved. **********************//
#pragma once

#include "BsScriptEditorPrerequisites.h"
#include "BsModule.h"

namespace BansheeEngine
{
	/**
	 * @brief	Tracks main menu items that are registered in managed code using the MenuItem
	 *			attribute.
	 */
	class BS_SCR_BED_EXPORT MenuItemManager : public Module<MenuItemManager>
	{
	public:
		MenuItemManager(ScriptAssemblyManager& scriptObjectManager);
		~MenuItemManager();

	private:
		/**
		 * @brief	Removes all managed menu items from the main menu.
		 */
		void clearMenuItems();

		/**
		 * @brief	Reloads all assembly types and attempts to find uses of MenuItem. Old
		 *			menu items are cleared and new are added.
		 */
		void reloadAssemblyData();

		/**
		 * @brief	Parse the provided method and detect whether it has a MenuItem attribute.
		 *			If it has extract needed data from it.
		 *
		 * @param	method		Managed method to parse.
		 * @param	path		Output path defined in the MenuItem attribute.
		 * @param	shortcut	Shortcut key defined in the MenuItem attribute.
		 * @param	priority	Menu item priority defined in the MenuItem attribute.
		 * @param	separator	Should the separator be inserted before the menu item.
		 *
		 * @return	True if the method has a MenuItem attribute. If false is returned output parameters
		 *			from this method are undefined.
		 */
		bool parseMenuItemMethod(MonoMethod* method, WString& path, ShortcutKey& shortcut, INT32& priority, bool& separator) const;

		/**
		 * @brief	Triggered when one of the managed menu items is clicked. 
		 *
		 * @param	method	Managed method that the MenuItem is referencing.
		 */
		static void menuItemCallback(MonoMethod* method);

		ScriptAssemblyManager& mScriptObjectManager;
		HEvent mDomainLoadedConn;

		MonoClass* mMenuItemAttribute;
		MonoField* mPathField;
		MonoField* mShortcutField;
		MonoField* mPriorityField;
		MonoField* mSeparatorField;

		Vector<GUIMenuItem*> mMenuItems;
	};
}