/*

* 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: MpMainWindow implementation.

*

*/

#include <hbapplication.h>

#include <hbview.h>

#include <mpxviewpluginqt.h>

#include <xqpluginloader.h>

#include <xqplugininfo.h>

#include <xqserviceutil.h>

#include <xqsharablefile.h>

#include <QTranslator>

#include <QLocale>

#include "mpmainwindow.h"

#include "mpviewbase.h"

#include "musicservices.h"

#include "mpengine.h"

#include "mptrace.h"

/*!

   \class MpMainWindow

   \brief The MpMainWindow class provides Main Window functionalities.

   MpMainWindow handles activation of views

*/

/*!

    Constructs the main winsdow.

 */

MpMainWindow::MpMainWindow()

    : MpxViewFramework(),

      mCollectionViewPlugin(0),

      mPlaybackViewPlugin(0),

      mSettingsViewPlugin(0),

      mDetailsViewPlugin(0),

      mCurrentViewPlugin(0),

      mVerticalViewType( CollectionView ),

      mMusicServices(0)

{

    TX_LOG

}

/*!

 Destructs the main window.

 */

MpMainWindow::~MpMainWindow()

{

    TX_ENTRY

    if(mMusicServices){

        delete mMusicServices;

    }

    if (mCollectionViewPlugin) {

        mCollectionViewPlugin->destroyView();

        delete mCollectionViewPlugin;

    }

    if (mPlaybackViewPlugin) {

        mPlaybackViewPlugin->destroyView();

        delete mPlaybackViewPlugin;

    }

    if (mSettingsViewPlugin) {

        mSettingsViewPlugin->destroyView();

        delete mSettingsViewPlugin;

    }

    if (mDetailsViewPlugin) {

        mDetailsViewPlugin->destroyView();

        delete mDetailsViewPlugin;

    }

    MpEngine::instance()->close();

    TX_EXIT

}

/*!

Initialize and activate the collection view

 */

void MpMainWindow::initialize()

{

    TX_ENTRY

    //Load musicplayer translator

    QTranslator translator;

    QString lang = QLocale::system().name();

    QString path = QString("z:/resource/qt/translations/");

    bool translatorLoaded = false;

    translatorLoaded = translator.load(path + "musicplayer_" + lang);

    TX_LOG_ARGS("Loading musicplayer translator ok=" << translatorLoaded);

    if ( translatorLoaded ) {

        qApp->installTranslator( &translator );

    }

#ifdef _DEBUG

    QList<XQPluginInfo> impls;

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

    TX_LOG_ARGS("Available plugins:");

    for ( int i = 0; i < impls.size(); i++ ) {

        TX_LOG_ARGS("Plugin " << i << ": " << impls[i].uid() << ", " << impls[i].dllName() );

    }

#endif // _DEBUG

    if ( XQServiceUtil::isService() ) {

        // Music Service mode

        // Set the Collection View and Playback View to fetcher mode

        mMusicServices = new MusicServices();

        int err = connect(mMusicServices, SIGNAL(serviceActive( TUid )), this, SLOT(initializeServiceView( TUid )));

        TX_LOG_ARGS("connection error: " << err);

        XQServiceUtil::toBackground( false );

    }

    MpEngine *engine = MpEngine::instance();

    if ( !mMusicServices ) {

        engine->initialize(MpCommon::DefaultView);

        loadView(CollectionView);

        activateView(CollectionView);

        connect(this, SIGNAL( orientationChanged( Qt::Orientation ) ), SLOT( switchView( Qt::Orientation ) ) );

        engine->checkForSystemEvents();

        loadView( PlaybackView );

    }

    setOrientation(Qt::Vertical, true);//This sould prevent media wall activation.

    TX_EXIT

}

/*!

 Slot to be called to handle the \a commandCode.

 */

void MpMainWindow::handleCommand( int commandCode )

{

    TX_ENTRY_ARGS("commandCode=" << commandCode );

    switch ( commandCode ) {

        case MpCommon::Exit:

            if ( mCurrentViewPlugin ) {

                disconnectView();

            }

            qApp->quit();

            break;

        case MpCommon::ActivateCollectionView:

            activateView(CollectionView);

            break;

        case MpCommon::ActivatePlaybackView:

            activateView(PlaybackView);

            break;

        case MpCommon::ActivateSettingsView:

            activateView(SettingsView);

            break;

        case MpCommon::ActivateDetailsView:

            activateView(DetailsView);

            break;

    }

    TX_EXIT

}

/*!

 Slot to be called to switch view based on \a orientation.

 */

void MpMainWindow::switchView( Qt::Orientation orientation )

{

        if (orientation == Qt::Vertical) {

            activateView( mVerticalViewType );   

        }

}

/*!

 Activate the \a viewType view.

 */

void MpMainWindow::activateView(MpMainWindow::ViewType viewType)

{

    TX_ENTRY_ARGS("viewType=" << viewType );

    bool doTransition = true;

    Hb::ViewSwitchFlags  transitionFlags = Hb::ViewSwitchDefault;

    if ( mCurrentViewPlugin ) {     

        disconnectView();

        mCurrentViewPlugin->deactivateView();

        if ( viewType  == CollectionView && mCurrentViewPlugin == mPlaybackViewPlugin ||

                  viewType  == PlaybackView && mCurrentViewPlugin == mDetailsViewPlugin ||

                  viewType  == PlaybackView && mCurrentViewPlugin == mSettingsViewPlugin ) {

            transitionFlags |= Hb::ViewSwitchUseBackAnim;

        }

        mCurrentViewPlugin = 0;

    }

    // loadView will not reload the view if is already loaded.

    mCurrentViewPlugin = loadView( viewType );

    Q_ASSERT( mCurrentViewPlugin );

    if ( mCurrentViewPlugin ) {

        mVerticalViewType = viewType;

        addView( reinterpret_cast<HbView*>( mCurrentViewPlugin->getView() ) );

        setCurrentView( reinterpret_cast<HbView*>( mCurrentViewPlugin->getView() ) , doTransition , transitionFlags);

        mCurrentViewPlugin->activateView();

        connectView();

    }

    TX_EXIT

}

/*!

 Connect the signals to the current active view.

 */

void MpMainWindow::connectView()

{

    TX_ENTRY

	QObject::connect(mCurrentViewPlugin,

					 SIGNAL(command(int)),

					 this,

					 SLOT(handleCommand(int)));

    TX_EXIT

}

/*!

 Disonnect the signals from the current active view.

 */

void MpMainWindow::disconnectView()

{

    TX_ENTRY

	QObject::disconnect(mCurrentViewPlugin,

					 SIGNAL(command(int)),

					 this,

					 SLOT(handleCommand(int)));

    TX_EXIT

}

/*!

 Slot to be called when Library has changed.

 */

void MpMainWindow::handleLibraryUpdated()

{

    TX_ENTRY

    // If library changed while playing back, always return to AllSongs collection view.

    if ( mPlaybackViewPlugin &&

         mCurrentViewPlugin == mPlaybackViewPlugin &&

         mCollectionViewPlugin ) {

        activateView( CollectionView );

        MpViewBase* collectionView = reinterpret_cast<MpViewBase*>(mCollectionViewPlugin->getView());

        collectionView->setDefaultView();

    }

    TX_EXIT

}

/*!

 Reimp.

 */

void MpMainWindow::initializeServiceView( TUid hostUid ){

    MpEngine *engine = MpEngine::instance();

    switch (mMusicServices->currentService()) {

    case MusicServices::EUriFetcher:

        {

            engine->initialize( MpCommon::FetchView, hostUid );

            loadView( CollectionView, MpCommon::FetchView );

            MpViewBase* collectionView = reinterpret_cast<MpViewBase*>(mCollectionViewPlugin->getView());

            connect(collectionView, SIGNAL(songSelected(QString)), mMusicServices, SLOT(itemSelected(QString)));

            activateView( CollectionView );           

            loadView(PlaybackView, MpCommon::FetchView );

            MpViewBase* playbackView = reinterpret_cast<MpViewBase*>(mPlaybackViewPlugin->getView());

            connect(playbackView, SIGNAL(songSelected(QString)), mMusicServices, SLOT(itemSelected(QString)));

            engine->checkForSystemEvents();

            break;

        }

    case MusicServices::EPlayback:

        {

            engine->initialize( MpCommon::EmbeddedView, hostUid );

            loadView(PlaybackView, MpCommon::EmbeddedView );   

            MpViewBase* playbackView = reinterpret_cast<MpViewBase*>(mPlaybackViewPlugin->getView());

            connect(mMusicServices, SIGNAL(playReady(QString)), engine, SLOT(playEmbedded(QString)));

            connect(mMusicServices, SIGNAL(playReady(const XQSharableFile&)), engine, SLOT(playEmbedded(const XQSharableFile&)));

            connect(playbackView, SIGNAL(songSelected(QString)), mMusicServices, SLOT(itemSelected(QString)));

            activateView( PlaybackView );

            break;

        }

        default:

        Q_ASSERT_X(false, "MpMainWindow::initializeServiceView", "undefined service");

        break;

    }

}

/*!

  loads a view if type \a  type, return the view plugin, if view is already loaded it will not reload the view.

 */

MpxViewPlugin* MpMainWindow::loadView( ViewType type, MpCommon::MpViewMode viewMode )

{

    MpxViewPlugin** plugin = 0;

    long int pluginUid = 0;    

    switch (type) { 

    case CollectionView:

        pluginUid = MpCommon::KCollectionViewUid;

        plugin = &mCollectionViewPlugin;

        break;

    case PlaybackView:

        pluginUid = MpCommon::KPlaybackViewUid;

        plugin = &mPlaybackViewPlugin;

        break;

    case SettingsView:

        pluginUid = MpCommon::KSettingsViewUid;

        plugin = &mSettingsViewPlugin;

        break;

    case DetailsView:

        pluginUid = MpCommon::KDetailsViewUid;

        plugin = &mDetailsViewPlugin;

        break;

    default:

        Q_ASSERT_X(false, "MpMainWindow::loadView", "undefined view type");

        break;

    }

    Q_ASSERT( plugin && pluginUid);

    if ( plugin && !(*plugin) ) {

        //plugin was not loded before, loding plugin.

        XQPluginLoader pluginLoader( pluginUid );

        QObject* pluginInstance = pluginLoader.instance();

        (*plugin) = qobject_cast<MpxViewPlugin*>( pluginInstance )->viewPlugin();

        Q_ASSERT( *plugin );

        if ( *plugin ) {

            (*plugin)->createView();

            MpViewBase* view = reinterpret_cast<MpViewBase*>( (*plugin)->getView() );

            view->setTitle( mMusicServices ? mMusicServices->contextTitle() : hbTrId("txt_mus_title_music"));

            view->setViewMode( viewMode );

        }

    }

    Q_ASSERT( plugin ? *plugin : 0 );

    return plugin ? *plugin : 0;

}