//////////////////////////////////////////////////////////////////////////////
// oxygencomboboxdata.cpp
// data container for QComboBox transition
// -------------------
//
// 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 "oxygencomboboxdata.h"
#include "oxygencomboboxdata.moc"

namespace Oxygen
{

    //______________________________________________________
    ComboBoxData::ComboBoxData( QObject* parent, QComboBox* target, int duration ):
        TransitionData( parent, target, duration ),
        target_( target )
    {
        target_.data()->installEventFilter( this );
        connect( target_.data(), SIGNAL( currentIndexChanged( int ) ), SLOT( indexChanged() ) );
    }

    //___________________________________________________________________
    void ComboBoxData::indexChanged( void )
    {

        if( recursiveCheck() ) return;

        if( transition().data()->isAnimated() )
        { transition().data()->endAnimation(); }

        if( initializeAnimation() ) animate();
        else transition().data()->hide();

    }

    //___________________________________________________________________
    bool ComboBoxData::eventFilter( QObject* object, QEvent* event )
    {

        // make sure engine is enabled
        if( !( enabled() && object == target_.data() ) )
        { return TransitionData::eventFilter( object, event ); }

        // make sure that target is not editable
        if( target_.data()->isEditable() )
        { return TransitionData::eventFilter( object, event ); }

        switch( event->type() )
        {
            case QEvent::Paint:
            if( transition().data()->endPixmap().isNull() && !recursiveCheck() )
            { timer_.start( 0, this ); }
            break;

            case QEvent::Resize:
            if( !recursiveCheck() && target_.data()->isVisible() )
            { timer_.start( 0, this ); }
            break;

            default: break;
        }

        return TransitionData::eventFilter( object, event );

    }

    //___________________________________________________________________
    void ComboBoxData::timerEvent( QTimerEvent* event )
    {
        if( event->timerId() == timer_.timerId() )
        {

            timer_.stop();
            if( target_ && !target_.data()->isEditable() )
            {
                setRecursiveCheck( true );
                transition().data()->setEndPixmap( transition().data()->grab( target_.data(), targetRect() ) );
                setRecursiveCheck( false );
            }

        } else return QObject::timerEvent( event );

    }

    //___________________________________________________________________
    bool ComboBoxData::initializeAnimation( void )
    {
        if( !( enabled() && target_ && target_.data()->isVisible() ) ) return false;
        if( target_.data()->isEditable() )
        {
            /*
            do nothing for editable comboboxes because
            lineEditor animations are handled directly
            */
            return false;
        }

        transition().data()->setOpacity(0);
        transition().data()->setGeometry( targetRect() );
        transition().data()->setStartPixmap( transition().data()->currentPixmap() );
        transition().data()->show();
        transition().data()->raise();
        return true;
    }

    //___________________________________________________________________
    bool ComboBoxData::animate( void )
    {

        // check enability
        if( !enabled() ) return false;

        // grab
        setRecursiveCheck( true );
        transition().data()->setEndPixmap( transition().data()->grab( target_.data(), targetRect() ) );
        setRecursiveCheck( false );

        // start animation
        transition().data()->animate();

        return true;

    }

}
