/*

* 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 <hbapplication.h>

#include <hbactivitymanager.h>

#include "videoplayerengine.h"

#include "videoactivitystate.h"

#include "mpxvideoplaybackwrapper.h"

#include "videoservices.h"

#include "mpxvideo_debug.h"

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

// QVideoPlayerEngine()

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

//

QVideoPlayerEngine::QVideoPlayerEngine( bool isService )

    : mIsService( isService )

    , mEmbedded( false )

    , mDelayedLoadDone( false )

    , mIsPlayService( 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();

		delete mCollectionViewPlugin;

		mCollectionViewPlugin = 0;

    }

    if ( mPlaybackViewPlugin ) 

    {

        mPlaybackViewPlugin->destroyView();

		delete mPlaybackViewPlugin;

		mPlaybackViewPlugin = 0;

    }

    if ( mFileDetailsViewPlugin ) 

    {

        mFileDetailsViewPlugin->destroyView();

		delete mFileDetailsViewPlugin;

		mFileDetailsViewPlugin = 0;

    }

    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 ) ) );

    }

    QList<XQPluginInfo> impls;

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

    if ( mIsService )

    {

        if(!mVideoServices)

        {

            mVideoServices = VideoServices::instance(this);

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

        }

        if ( isPlayServiceInvoked() )

        {

            createPlaybackView(); 

        }

        else

        {

            loadPluginAndCreateView( MpxHbVideoCommon::CollectionView );  

            // Browse service will activate view once the category to be opened is informed from highway

            // since the category is not known at this point, we do not activate view for it here

            if(!(XQServiceUtil::interfaceName().contains("IVideoBrowse")))

            {

                activateView( MpxHbVideoCommon::CollectionView );   

            }

        }

    }

    else

    {

        // check latest plugin type from activity manager data and create + activate it 

        // CollectionView (default) and playbackview are the ones that are accepted

        MpxHbVideoCommon::MpxHbVideoViewType viewType = MpxHbVideoCommon::CollectionView;

        {

            viewType = MpxHbVideoCommon::MpxHbVideoViewType(typeGotten);

        }

    }

}

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

// 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()"));

    createMissingViews();

    mDelayedLoadDone = true;

}

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

// createPlaybackView()

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

//

void QVideoPlayerEngine::createPlaybackView()

{

    mPlaybackWrapper->lateInit();

    if ( ! mPlaybackViewPlugin )

    {

       loadPluginAndCreateView( MpxHbVideoCommon::PlaybackView );

    }

}

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

// createMissingViews()

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

//

void QVideoPlayerEngine::createMissingViews()

{

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

    //

    // delayed initialization of some uiengine member variables

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

    //

    createPlaybackView();

    if(!mFileDetailsViewPlugin)

    {

        loadPluginAndCreateView( MpxHbVideoCommon::VideoDetailsView );

    }

    if(!mCollectionViewPlugin)

    {

        loadPluginAndCreateView( MpxHbVideoCommon::CollectionView );

    }

}

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

// 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;

    }

    switch ( viewType )

    {

        case MpxHbVideoCommon::CollectionView:

        {

            if ( shouldExit() )

            {

                qApp->quit();

                XQServiceUtil::toBackground( false );             

            }

            else if ( shouldActivateCollectionView()  )

            {

                if ( ! mCollectionViewPlugin )

                {

                    loadPluginAndCreateView( MpxHbVideoCommon::CollectionView );

                }            

                mCurrentViewPlugin = mCollectionViewPlugin;

                setCurrentView();                    

            }

            break;    

        }

        case MpxHbVideoCommon::PlaybackView:

        {

            if ( ! mPlaybackViewPlugin )

            {

                loadPluginAndCreateView( MpxHbVideoCommon::PlaybackView );

            }

            mCurrentViewPlugin = mPlaybackViewPlugin;

            setCurrentView();     

            break;    

        }

        case MpxHbVideoCommon::VideoDetailsView:

        {

            if ( ! mFileDetailsViewPlugin )

            {

                loadPluginAndCreateView( MpxHbVideoCommon::VideoDetailsView );  

            }

            mCurrentViewPlugin = mFileDetailsViewPlugin;

            setCurrentView();       

            break;    

        }        

    }    

}

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

// 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()"));

    if(!mIsService)

    {

        VideoActivityState &localActivity(VideoActivityState::instance());

        QVariant data = QVariant();

        HbActivityManager *actManager = qobject_cast<HbApplication*>(qApp)->activityManager();

        //

        // get and save recent view type: either playback or collection view plugins are currently used.

        // activity will not be saved from the details plugin

        //

        int viewType = MpxHbVideoCommon::CollectionView;

        if(mCurrentViewPlugin == mPlaybackViewPlugin)

        {

        }

        // save data to activity manager

        actManager->addActivity(ACTIVITY_VIDEOPLAYER_MAINVIEW, 

                                localActivity.getActivityData(),

                                QVariantHash());                

    }