diff -r 26a1709b9fec -r 14979e23cb5e mpviewplugins/mpcollectionviewplugin/src/mpcollectioncontainerfactory.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpviewplugins/mpcollectionviewplugin/src/mpcollectioncontainerfactory.cpp	Tue Aug 31 15:12:29 2010 +0300
@@ -0,0 +1,156 @@
+/*
+* 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: Music Player collection container factory.
+*
+*/
+
+#include <hbdocumentloader.h>
+
+#include "mpcollectioncontainerfactory.h"
+#include "mpcollectionview.h"
+#include "mpcollectioncontainer.h"
+#include "mpcollectioncontainerallsongs.h"
+#include "mpcollectioncontainerartists.h"
+#include "mpcollectioncontaineralbums.h"
+#include "mpcollectioncontainerplaylists.h"
+#include "mptrace.h"
+
+/*!
+    \class MpCollectionContainerFactory
+    \brief Music Player collection container factory.
+
+    Collection container factory is responsible for creating different
+    collection containers according to the current context. It is also
+    responsible for making decisions whether to create a new container
+    or reuse the existing container depending on the context transition.
+
+    \sa MpCollectionContainer
+*/
+
+/*!
+ Constructs the collection container factory.
+ */
+MpCollectionContainerFactory::MpCollectionContainerFactory( MpCollectionView *view, HbDocumentLoader *loader, QObject *parent )
+    : QObject(parent),
+      mView(view),
+      mCurrentContainer(0),
+      mCurrentContext(ECollectionContextUnknown),
+      mDocumentLoader(loader)
+{
+    TX_LOG
+}
+
+/*!
+ Destructs the collection container factory.
+ */
+MpCollectionContainerFactory::~MpCollectionContainerFactory()
+{
+    TX_LOG
+}
+
+/*!
+ Creates a container for the given \a context.
+ */
+MpCollectionContainer *MpCollectionContainerFactory::createContainer(
+    TCollectionContext context )
+{
+    TX_ENTRY_ARGS("context=" << context);
+
+    switch ( context ) {
+    case ECollectionContextAllSongs:
+        deleteCurrentContainer();
+        mCurrentContainer = new MpCollectionContainerAllSongs(mDocumentLoader);
+        mCurrentContainer->initialize();
+        connect( mCurrentContainer, SIGNAL(itemActivated(int)), mView, SLOT(openIndex(int)) );
+        connect( mCurrentContainer, SIGNAL(itemLongPressed(int, QPointF)), mView, SLOT(openContextMenu(int, QPointF)) );
+        connect( mCurrentContainer, SIGNAL(shuffleEnabled(bool)), mView, SLOT(setShuffleAction(bool)) );
+        break;
+    case ECollectionContextArtists:
+        if ( ( mCurrentContext != ECollectionContextArtistAlbums )
+               && ( mCurrentContext != ECollectionContextArtistAlbumsTBone)
+               && ( mCurrentContext != ECollectionContextArtistAllSongs) )
+            {
+            deleteCurrentContainer();
+            mCurrentContainer = new MpCollectionContainerArtists(mDocumentLoader);
+            mCurrentContainer->initialize();
+            connect( mCurrentContainer, SIGNAL(itemActivated(int)), mView, SLOT(openIndex(int)) );
+            connect( mCurrentContainer, SIGNAL(itemLongPressed(int, QPointF)), mView, SLOT(openContextMenu(int, QPointF)) );
+            connect( mCurrentContainer, SIGNAL(findAlbumSongs(int)), mView, SLOT(findAlbumSongs(int)) );
+            connect( mCurrentContainer, SIGNAL(playAlbumSongs(int, int)), mView, SLOT(playAlbumSongs(int, int)) );
+            connect( mCurrentContainer, SIGNAL(shuffleEnabled(bool)), mView, SLOT(setShuffleAction(bool)) );
+        }
+        break;
+    case ECollectionContextAlbums:
+        if ( mCurrentContext != ECollectionContextAlbumsTBone ) {
+            deleteCurrentContainer();
+            mCurrentContainer = new MpCollectionContainerAlbums(mDocumentLoader);
+            mCurrentContainer->initialize();
+            connect( mCurrentContainer, SIGNAL(itemActivated(int)), mView, SLOT(openIndex(int)) );
+            connect( mCurrentContainer, SIGNAL(itemLongPressed(int, QPointF)), mView, SLOT(openContextMenu(int, QPointF)) );
+            connect( mCurrentContainer, SIGNAL(findAlbumSongs(int)), mView, SLOT(findAlbumSongs(int)) );
+            connect( mCurrentContainer, SIGNAL(playAlbumSongs(int, int)), mView, SLOT(playAlbumSongs(int, int)) );
+            connect( mCurrentContainer, SIGNAL(shuffleEnabled(bool)), mView, SLOT(setShuffleAction(bool)) );
+        }
+        break;
+    case ECollectionContextPlaylists:
+        if ( mCurrentContext != ECollectionContextPlaylistSongs ) {
+            deleteCurrentContainer();
+            mCurrentContainer = new MpCollectionContainerPlaylists(mDocumentLoader);
+            mCurrentContainer->initialize();
+            connect( mCurrentContainer, SIGNAL(itemActivated(int)), mView, SLOT(openIndex(int)) );
+            connect( mCurrentContainer, SIGNAL(itemLongPressed(int, QPointF)), mView, SLOT(openContextMenu(int, QPointF)) );
+            connect( mCurrentContainer, SIGNAL(shuffleEnabled(bool)), mView, SLOT(setShuffleAction(bool)) );
+        }
+        break;
+    case ECollectionContextArtistAlbums:
+    case ECollectionContextArtistAlbumsTBone:
+    case ECollectionContextArtistAllSongs:
+    case ECollectionContextAlbumsTBone:
+    case ECollectionContextPlaylistSongs:
+        // For this contexts, reuse the same container.
+        break;
+    }
+    TX_EXIT
+    mCurrentContext = context;
+    return mCurrentContainer;
+}
+
+/*!
+ \internal
+ */
+void MpCollectionContainerFactory::deleteCurrentContainer()
+{
+    TX_ENTRY_ARGS("mCurrentContext=" << mCurrentContext);
+    switch ( mCurrentContext ) {
+    case ECollectionContextAllSongs:
+        delete static_cast<MpCollectionContainerAllSongs *>(mCurrentContainer);
+        break;
+    case ECollectionContextArtists:
+    case ECollectionContextArtistAlbums:
+    case ECollectionContextArtistAlbumsTBone:
+    case ECollectionContextArtistAllSongs:
+        delete static_cast<MpCollectionContainerArtists *>(mCurrentContainer);
+        break;
+    case ECollectionContextAlbums:
+    case ECollectionContextAlbumsTBone:
+        delete static_cast<MpCollectionContainerAlbums *>(mCurrentContainer);
+        break;
+    case ECollectionContextPlaylists:
+    case ECollectionContextPlaylistSongs:
+        delete static_cast<MpCollectionContainerPlaylists *>(mCurrentContainer);
+        break;
+    }
+    TX_EXIT
+}
+