#ifndef adwaitasplitterproxy_h

#define adwaitasplitterproxy_h

/*************************************************************************

 * Copyright (C) 2014 by Hugo Pereira Da Costa <hugo.pereira@free.fr>    *

 *                                                                       *

 * 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 .        *

 *************************************************************************/

#include "adwaita.h"

#include "adwaitaaddeventfilter.h"

#include <QEvent>

#include <QHoverEvent>

#include <QMainWindow>

#include <QMap>

#include <QMouseEvent>

#include <QSplitterHandle>

#include <QWidget>

namespace Adwaita

{

    class SplitterProxy;

    //* factory

    class SplitterFactory: public QObject

    {

        Q_OBJECT

        public:

        //* constructor

        explicit SplitterFactory( QObject* parent ):

            QObject( parent ),

            _enabled( false )

            {}

        //* destructor

        virtual ~SplitterFactory( void )

        {}

        //* enabled state

        void setEnabled( bool );

        //* register widget

        bool registerWidget( QWidget* );

        //* unregister widget

        void unregisterWidget( QWidget* );

        private:

        //* enabled state

        bool _enabled;

        //* needed to block ChildAdded events when creating proxy

        AddEventFilter _addEventFilter;

        //* pointer to SplitterProxy

        using SplitterProxyPointer = WeakPointer<SplitterProxy>;

        //* registered widgets

        using WidgetMap = QMap<QWidget*, SplitterProxyPointer >;

        WidgetMap _widgets;

    };

    //* splitter 'proxy' widget, with extended hit area

    class SplitterProxy : public QWidget

    {

        Q_OBJECT

        public:

        //* constructor

        explicit SplitterProxy( QWidget*, bool = false );

        //* destructor

        virtual ~SplitterProxy( void );

        //* event filter

        virtual bool eventFilter( QObject*, QEvent* );

        //* enable state

        void setEnabled( bool );

        //* enable state

        bool enabled( void ) const

        { return _enabled; }

        protected:

        //* event handler

        virtual bool event( QEvent* );

        protected:

        //* reset 'true' splitter widget

        void clearSplitter( void );

        //* keep track of 'true' splitter widget

        void setSplitter( QWidget* );

        private:

        //* enabled state

        bool _enabled;

        //* splitter object

        WeakPointer<QWidget> _splitter;

        //* hook

        QPoint _hook;

        //* timer id

        int _timerId;

    };

}

#endif