/***************************************************************************
*   Copyright (C) 2009 by Joris Guisson                                   *
*   joris.guisson@gmail.com                                               *
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
*   This program 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 General Public License for more details.                          *
*                                                                         *
*   You should have received a copy of the GNU General Public License     *
*   along with this program; if not, write to the                         *
*   Free Software Foundation, Inc.,                                       *
*   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
***************************************************************************/

#ifndef KT_CENTRALWIDGET_H
#define KT_CENTRALWIDGET_H

#include <QStackedWidget>
#include <QActionGroup>
#include <KAction>
#include <KSharedConfig>
#include <ktcore_export.h>


namespace kt 
{
	class Activity;
	
	/**
	 * The CentralWidget holds the widget stack. 
	 */
	class KTCORE_EXPORT CentralWidget : public QStackedWidget
	{
		Q_OBJECT
	public:
		CentralWidget(QWidget* parent);
		virtual ~CentralWidget();
		
		/// Add an Activity
		KAction* addActivity(Activity* act);
		
		/// Remove an Activity (doesn't delete it)
		void removeActivity(Activity* act);
		
		/// Set the current activity
		void setCurrentActivity(Activity* act);
		
		/// Get the current activity
		Activity* currentActivity();
		
		/// Load the state of the widget
		void loadState(KSharedConfigPtr cfg);
		
		/// Save the state of the widget
		void saveState(KSharedConfigPtr cfg);
		
		/// Get the list of actions to switch between activities
		QList<QAction*> activitySwitchingActions();
		
	private slots:
		void switchActivity(QAction* action);
		
	signals:
		/// Emitted when the current Activity needs to be changed
		void changeActivity(Activity* act);
		
	private:
		QActionGroup* activity_switching_group;
	};

}

#endif // KT_CENTRALWIDGET_H
