/*!
	@file
	@author		Albert Semenov
	@date		11/2007
*/
/*
	This file is part of MyGUI.

	MyGUI is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	MyGUI 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 Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with MyGUI.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MYGUI_WIDGET_MANAGER_H__
#define __MYGUI_WIDGET_MANAGER_H__

#include "MyGUI_Prerequest.h"
#include "MyGUI_Singleton.h"
#include "MyGUI_IUnlinkWidget.h"
#include "MyGUI_ICroppedRectangle.h"
#include "MyGUI_Widget.h"
#include <set>
#include "MyGUI_BackwardCompatibility.h"

namespace MyGUI
{
	class MYGUI_EXPORT WidgetManager :
		public Singleton<WidgetManager>,
		public MemberObsolete<WidgetManager>
	{
	public:
		WidgetManager();

		void initialise();
		void shutdown();

		Widget* createWidget(WidgetStyle _style, const std::string& _type, const std::string& _skin, const IntCoord& _coord, Widget* _parent, ICroppedRectangle* _cropeedParent, const std::string& _name);

		/** Destroy _widget */
		void destroyWidget(Widget* _widget);
		/** Destroy vector of widgets */
		void destroyWidgets(const VectorWidgetPtr& _widgets);
		/** Destroy Enumerator of widgets */
		void destroyWidgets(EnumeratorWidgetPtr _widgets);

		/** Register unlinker (call unlink if for any destroyed widget)*/
		void registerUnlinker(IUnlinkWidget* _unlink);
		/** Unregister unlinker (call unlink if for any destroyed widget)*/
		void unregisterUnlinker(IUnlinkWidget* _unlink);
		/** Unlink widget */
		void unlinkFromUnlinkers(Widget* _widget);

		/** Check if factory with specified widget type exist */
		bool isFactoryExist(const std::string& _type);

		/*internal:*/
		void _deleteWidget(Widget* _widget);
		void _deleteDelayWidgets();

	private:
		void notifyEventFrameStart(float _time);

	private:
		bool mIsInitialise;

		// список менеджеров для отписки при удалении
		VectorIUnlinkWidget mVectorIUnlinkWidget;

		// список виджетов для удаления
		VectorWidgetPtr mDestroyWidgets;
	};

} // namespace MyGUI

#endif // __MYGUI_WIDGET_MANAGER_H__