#ifndef oxygenheaderviewdata_h
#define oxygenheaderviewdata_h

//////////////////////////////////////////////////////////////////////////////
// oxygenheaderviewdata.h
// data container for QHeaderView animations
// -------------------
//
// Copyright (c) 2009 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//////////////////////////////////////////////////////////////////////////////

#include "oxygenanimationdata.h"
#include <QtGui/QHeaderView>

namespace Oxygen
{

    //! headerviews
    class HeaderViewData: public AnimationData
    {

        Q_OBJECT

        //! declare opacity property
        Q_PROPERTY( qreal currentOpacity READ currentOpacity WRITE setCurrentOpacity )
        Q_PROPERTY( qreal previousOpacity READ previousOpacity WRITE setPreviousOpacity )

        public:

        //! constructor
        HeaderViewData( QObject* parent, QWidget* target, int duration );

        //! destructor
        virtual ~HeaderViewData( void )
        {}

        //! duration
        void setDuration( int duration )
        {
            currentIndexAnimation().data()->setDuration( duration );
            previousIndexAnimation().data()->setDuration( duration );
        }

        //! update state
        bool updateState( const QPoint&, bool );

        //!@name current index handling
        //@{

        //! current opacity
        virtual qreal currentOpacity( void ) const
        { return current_.opacity_; }

        //! current opacity
        virtual void setCurrentOpacity( qreal value )
        {
            value = digitize( value );
            if( current_.opacity_ == value ) return;
            current_.opacity_ = value;
            setDirty();
        }

        //! current index
        virtual int currentIndex( void ) const
        { return current_.index_; }

        //! current index
        virtual void setCurrentIndex( int index )
        { current_.index_ = index; }

        //! current index animation
        virtual const Animation::Pointer& currentIndexAnimation( void ) const
        { return current_.animation_; }

        //@}

        //!@name previous index handling
        //@{

        //! previous opacity
        virtual qreal previousOpacity( void ) const
        { return previous_.opacity_; }

        //! previous opacity
        virtual void setPreviousOpacity( qreal value )
        {
            value = digitize( value );
            if( previous_.opacity_ == value ) return;
            previous_.opacity_ = value;
            setDirty();
        }

        //! previous index
        virtual int previousIndex( void ) const
        { return previous_.index_; }

        //! previous index
        virtual void setPreviousIndex( int index )
        { previous_.index_ = index; }

        //! previous index Animation
        virtual const Animation::Pointer& previousIndexAnimation( void ) const
        { return previous_.animation_; }

        //@}

        //! return Animation associated to action at given position, if any
        virtual Animation::Pointer animation( const QPoint& position ) const;

        //! return opacity associated to action at given position, if any
        virtual qreal opacity( const QPoint& position ) const;

        protected:

        //! dirty
        inline virtual void setDirty( void ) const;

        private:

        //! container for needed animation data
        class Data
        {
            public:

            //! default constructor
            Data( void ):
                opacity_(0),
                index_(-1)
            {}

            Animation::Pointer animation_;
            qreal opacity_;
            int index_;
        };

        //! current tab animation data (for hover enter animations)
        Data current_;

        //! previous tab animations data (for hover leave animations)
        Data previous_;

    };


    //__________________________________________________________
    void HeaderViewData::setDirty( void ) const
    {
        if( QHeaderView* header = qobject_cast<QHeaderView*>( target().data() ) )
        {
            const int firstIndex( qMin( previousIndex(), currentIndex() ) );
            const int lastIndex( qMax( previousIndex(), currentIndex() ) );
            if( firstIndex >= 0 ) header->headerDataChanged( header->orientation(), firstIndex, lastIndex );
            else if( lastIndex >= 0 ) header->headerDataChanged( header->orientation(), lastIndex, lastIndex );
        }
    }


}

#endif
