/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Implementation of VideoPlayerEngine

*

*/

#include <QApplication>

#include <hbinstance.h>

#include <xqpluginloader.h>

#include <xqplugininfo.h>

#include <xqserviceutil.h>

#include <hbview.h>

#include "videoplayerengine.h"

#include "mpxvideoplaybackwrapper.h"

#include "videoservices.h"

#include "mpxvideo_debug.h"

// -------------------------------------------------------------------------------------------------

// QVideoPlayerEngine()

// -------------------------------------------------------------------------------------------------

//

QVideoPlayerEngine::QVideoPlayerEngine( bool isService )

    : mIsService( isService )

    , mEmbedded( false )

    , mDelayedLoadDone( false )

    , mCurrentViewPlugin( 0 )

    , mPlaybackViewPlugin( 0 )

    , mCollectionViewPlugin( 0 )

    , mFileDetailsViewPlugin( 0 )

    , mPlaybackWrapper( 0 )

    , mVideoServices( 0 )

{

    MPX_DEBUG(_L("QVideoPlayerEngine::QVideoPlayerEngine()"));

}

// -------------------------------------------------------------------------------------------------

// ~QVideoPlayerEngine()

// -------------------------------------------------------------------------------------------------

//

QVideoPlayerEngine::~QVideoPlayerEngine()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::~QVideoPlayerEngine()"));

    if ( mVideoServices )

    {

    	mVideoServices->decreaseReferenceCount();

    	mVideoServices = 0;

    }

    if ( mCollectionViewPlugin ) 

    {

        mCollectionViewPlugin->destroyView();

    }

    if ( mPlaybackViewPlugin ) 

    {

        mPlaybackViewPlugin->destroyView();

    }

    if ( mFileDetailsViewPlugin ) 

    {

        mFileDetailsViewPlugin->destroyView();

    }

    delete mPlaybackWrapper;

    // disconnect all signals 

    disconnect();

}

// -------------------------------------------------------------------------------------------------

// initialize()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::initialize()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::initialize()"));	

    //

    // Clean up QVideoPlayerEngine when qApp try to quit

    //

    connect( qApp, SIGNAL( aboutToQuit() ), this, SLOT( handleQuit() ) );

    //

    // Create playback wrapper

    //

    if ( !mPlaybackWrapper )

    {

        mPlaybackWrapper = new QMpxVideoPlaybackWrapper();

        connect( mPlaybackWrapper,

                 SIGNAL( handlePlaybackView( int ) ),

                 this,

                 SLOT( handleCommand( int ) ) );

    }

    //

    // Get VideoServices instance

    //

    if ( mIsService && ! mVideoServices )

    {

        mVideoServices = VideoServices::instance(this);

        connect( mVideoServices, SIGNAL(activated(int)), this, SLOT(handleCommand(int)));

    }

    QList<XQPluginInfo> impls;

    XQPluginLoader::listImplementations("org.nokia.mmdt.MpxViewPlugin/1.0", impls);

    {

        createPlayAndDetailsViews(); 

    }

    else

    }

}

// -------------------------------------------------------------------------------------------------

// handleCommand()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::handleCommand( int commandCode )

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::handleCommand()"),

                   _L("commandCode = %d"), commandCode );

    switch ( commandCode )

    {

        case MpxHbVideoCommon::ActivateCollectionView:

        {

            if ( mCurrentViewPlugin != mCollectionViewPlugin )

            { 

                activateView( MpxHbVideoCommon::CollectionView );

            }

            break;

        }

        case MpxHbVideoCommon::ActivatePlaybackView:

        {

            if ( mCurrentViewPlugin != mPlaybackViewPlugin )

            {                

                activateView( MpxHbVideoCommon::PlaybackView );                

            }

            break;

        }

        case MpxHbVideoCommon::ActivateVideoDetailsView:

        {

            if ( mCurrentViewPlugin != mFileDetailsViewPlugin )

            {

                activateView( MpxHbVideoCommon::VideoDetailsView );                

            }

            break;

        }

        case MpxHbVideoCommon::DoDelayedLoad:

        {

            if ( ! mDelayedLoadDone )

            {

                doDelayedLoad();

            }

            break;

        }

        default:

        {

            break;

        }

    }    

}

// -------------------------------------------------------------------------------------------------

// doDelayedLoad()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::doDelayedLoad()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::doDelayedLoad()"));

    createPlayAndDetailsViews();

    mDelayedLoadDone = true;

}

// -------------------------------------------------------------------------------------------------

// createPlayAndDetailsViews()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::createPlayAndDetailsViews()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::createPlayAndDetailsViews()"));

    //

    // delayed initialization of some uiengine member variables

    // to help application startup time & improve playback start time

    //

    mPlaybackWrapper->lateInit();

    if ( ! mPlaybackViewPlugin )

    {

        loadPluginAndCreateView( MpxHbVideoCommon::PlaybackView );

    }

    {

        loadPluginAndCreateView( MpxHbVideoCommon::VideoDetailsView );

    }

}

// -------------------------------------------------------------------------------------------------

// activateView()

// activate view based on view type.

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::activateView( MpxHbVideoCommon::MpxHbVideoViewType viewType )

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::activateView() "),

                   _L("viewType = %d"), viewType );

    disconnectView();

    if ( mCurrentViewPlugin )

    {

        mCurrentViewPlugin->deactivateView();

        mCurrentViewPlugin = NULL;

    }

    if ( viewType == MpxHbVideoCommon::CollectionView && mCollectionViewPlugin  ) 

    {

        if ( mIsService &&  

             ( mVideoServices->currentService() == VideoServices::EPlayback ||

               mVideoServices->currentService() == VideoServices::EView || 

               mVideoServices->currentService() == VideoServices::EUriFetcher ) )

        {

            if ( mVideoServices->currentService() == VideoServices::EUriFetcher )

            {

                if ( ! mVideoServices->mFetchSelected )    

                {

                    // 

                    // view is in 'fetch' service but 'attach' operation has not been selected,

                    // therefore, go back to collection view

                    //

                    mCurrentViewPlugin = mCollectionViewPlugin;

                    setCurrentView();                    

                }

            }

            else

            {

                qApp->quit();

                XQServiceUtil::toBackground( false );

            }

        }

        else

        {

            mCurrentViewPlugin = mCollectionViewPlugin;

            setCurrentView();

        }

    }

    else if ( viewType == MpxHbVideoCommon::PlaybackView ) 

    {

        if ( ! mPlaybackViewPlugin )

    	{

            loadPluginAndCreateView( MpxHbVideoCommon::PlaybackView );

        }

        mCurrentViewPlugin = mPlaybackViewPlugin;

        setCurrentView();

    }

    else if ( viewType == MpxHbVideoCommon::VideoDetailsView ) 

    {

        if ( ! mFileDetailsViewPlugin )

    	{

            loadPluginAndCreateView( MpxHbVideoCommon::VideoDetailsView );	

    	}

        mCurrentViewPlugin = mFileDetailsViewPlugin;

        setCurrentView();

    }

}

// -------------------------------------------------------------------------------------------------

// loadPluginAndCreateView()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::loadPluginAndCreateView( MpxHbVideoCommon::MpxHbVideoViewType viewType )

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::loadPluginAndCreateView() "), 

                   _L("viewType = %d"), viewType );

    int viewTypeUid( 0 );

    if ( viewType == MpxHbVideoCommon::CollectionView ) 

    {

        viewTypeUid = MpxHbVideoCommon::KMpxVideoPluginDllCollectionUid;

    }

    else if ( viewType == MpxHbVideoCommon::PlaybackView ) 

    {

        viewTypeUid = MpxHbVideoCommon::KMpxVideoPluginDllPlaybackUid;

    }

    else if ( viewType == MpxHbVideoCommon::VideoDetailsView )

    {

        viewTypeUid = MpxHbVideoCommon::KMpxVideoPluginDllFileDetailsUid;

    }

    if ( viewTypeUid )

    {

        // 

        // load corresponding plug-in

        //

        XQPluginLoader pluginLoader( viewTypeUid );

        QObject* instance = pluginLoader.instance();

        if ( instance )

        {

            MpxViewPlugin *currentViewPlugin = NULL;

            if ( viewType == MpxHbVideoCommon::CollectionView ) 

            {

                mCollectionViewPlugin = qobject_cast<MpxViewPlugin*>( instance )->viewPlugin();

                currentViewPlugin = mCollectionViewPlugin;

            }

            else if ( viewType == MpxHbVideoCommon::PlaybackView )

            {

                mPlaybackViewPlugin = qobject_cast<MpxViewPlugin*>( instance )->viewPlugin();

                currentViewPlugin = mPlaybackViewPlugin;

            }

            else if ( viewType == MpxHbVideoCommon::VideoDetailsView )

            {

                mFileDetailsViewPlugin = qobject_cast<MpxViewPlugin*>( instance )->viewPlugin();

                currentViewPlugin = mFileDetailsViewPlugin;

            }

            else

            {

                MPX_DEBUG(_L("QVideoPlayerEngine::loadPluginAndCreateView() : plugin not FOUND ! "));                

            }

            //

            // create corresponding view

            //

            if ( currentViewPlugin ) 

            {

                QGraphicsWidget *view = currentViewPlugin->getView();

                if ( ! view )

                {

                    MPX_DEBUG(_L("QVideoPlayerEngine::loadPluginAndCreateView() : create view "));

                    currentViewPlugin->createView();

                    hbInstance->allMainWindows().value(0)->addView( currentViewPlugin->getView() );

                }

                else

                {

                    MPX_DEBUG(_L("QVideoPlayerEngine::loadPluginAndCreateView() : view has already been created! "));                    

                }

            }

            else

            {

                MPX_DEBUG(_L("QVideoPlayerEngine::loadPluginAndCreateView() : currentViewPlugin is NULL ! "));                    

            }            

        }

    }

}

// -------------------------------------------------------------------------------------------------

// connectView()

// connect application to view by setting up the signals and slots.

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::connectView()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::connectView()"));

    connect( mCurrentViewPlugin,

             SIGNAL( command( int ) ),

             this,

             SLOT( handleCommand( int ) ) );

}

// -------------------------------------------------------------------------------------------------

// disconnectView()

// connect application to view by setting up the signals and slots.

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::disconnectView()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::disconnectView()"));

    if ( mCurrentViewPlugin )

    {

        disconnect( mCurrentViewPlugin,

                    SIGNAL( command( int ) ),

                    this,

                    SLOT( handleCommand( int ) ) );   

    }

}

// -------------------------------------------------------------------------------------------------

// handleQuit()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::handleQuit()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::handleQuit()"));

    delete this;

}

// -------------------------------------------------------------------------------------------------

// playMedia()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::playMedia( QString filePath )

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::playMedia()"),

                   _L("filePath = %s"), filePath.data() );  

    mPlaybackWrapper->playMedia( filePath );

}

// -------------------------------------------------------------------------------------------------

// playMedia()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::playMedia( RFile file )

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::playMedia( RFile )")); 

    mPlaybackWrapper->playMedia( file );    

}

// -------------------------------------------------------------------------------------------------

// setEmbedded()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::setEmbedded()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::setEmbedded()")); 

    mEmbedded = true;

}

// -------------------------------------------------------------------------------------------------

// setCurrentView()

// -------------------------------------------------------------------------------------------------

//

void QVideoPlayerEngine::setCurrentView()

{

    MPX_ENTER_EXIT(_L("QVideoPlayerEngine::setCurrentView()")); 

    if ( mCurrentViewPlugin )

    {

        //

        // set current view

        //

        hbInstance->allMainWindows().value(0)->setCurrentView( 

		                            qobject_cast<HbView*>( mCurrentViewPlugin->getView() ), false );

        //

        // connect view

        //

        connectView();

        // 

        // activate view

        //

        mCurrentViewPlugin->activateView();

    }

}