--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpengine/src/mpmpxisolatedcollectionhelper.cpp	Mon May 03 12:29:20 2010 +0300
@@ -0,0 +1,169 @@
+/*
+* 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: isolated collection helper.
+*
+*/
+
+
+#include <mpxcollectionhelperfactory.h>
+#include <mpxcollectionuihelper.h>
+#include <mpxcollectionopenutility.h>
+
+#include "mpmpxisolatedcollectionhelper.h"
+#include "mpxlog.h"
+
+
+
+const TInt KIncrementalDelayNone = 0;
+const TInt KIncrementalDelayHalfSecond = 1000000;
+const TInt KIncrementalFetchBlockSize = 20;
+const TInt KIncrementalNullOffset = 0;
+
+
+/*!
+    \class CMpMpxIsolatedCollectionHelper
+    \brief Helper class to open an isolated collection.
+
+    This is a helper class to open an insolated collection.
+*/
+
+/*!
+ \internal
+ Two-phased constructor.
+ */
+CMpMpxIsolatedCollectionHelper* CMpMpxIsolatedCollectionHelper::NewL( 
+        MMpMpxIsolatedCollectionHelperObserver* aObserver )
+    {
+    CMpMpxIsolatedCollectionHelper* self = NewLC( aObserver );
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+/*!
+ \internal
+ Two-phased constructor.
+ */
+CMpMpxIsolatedCollectionHelper* CMpMpxIsolatedCollectionHelper::NewLC( 
+        MMpMpxIsolatedCollectionHelperObserver* aObserver )
+    {
+    CMpMpxIsolatedCollectionHelper* self =
+            new ( ELeave ) CMpMpxIsolatedCollectionHelper( aObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    return self;
+    }
+
+/*!
+ \internal
+ Destructor
+ */
+CMpMpxIsolatedCollectionHelper::~CMpMpxIsolatedCollectionHelper()
+    {
+    delete iIncrementalOpenUtil;
+    }
+    
+
+/*!
+ \internal
+ Opens an isolated collection with the /a path.
+ */
+void CMpMpxIsolatedCollectionHelper::OpenCollectionL( CMPXCollectionPath& aPath )
+    {
+    //Using incremental open to open the collection.
+    
+    // Cancel any reads
+    iIncrementalOpenUtil->Stop();
+
+    // Start the read
+    iFirstIncrementalOpen = ETrue;
+    RArray<TMPXAttribute> attrs;
+    CleanupClosePushL( attrs );
+    TArray<TMPXAttribute> ary = attrs.Array();
+    iIncrementalOpenUtil->SetDelay( KIncrementalDelayNone );
+    iIncrementalOpenUtil->StartL( aPath, ary, KIncrementalFetchBlockSize,
+                                  KIncrementalNullOffset, CMPXCollectionOpenUtility::EFetchNormal );
+    iIncrementalOpenUtil->SetDelay( KIncrementalDelayHalfSecond );
+    CleanupStack::PopAndDestroy( &attrs );
+    }
+
+/*!
+ \internal
+ c++ Contructor
+ */
+CMpMpxIsolatedCollectionHelper::CMpMpxIsolatedCollectionHelper( MMpMpxIsolatedCollectionHelperObserver* aObserver )
+    : iObserver( aObserver ),
+      iIncrementalOpenUtil( 0 ),
+      iFirstIncrementalOpen( EFalse )
+    {
+    }
+
+/*!
+ \internal
+ Leaving constructor
+ */
+void CMpMpxIsolatedCollectionHelper::ConstructL()
+    {
+    iIncrementalOpenUtil = CMPXCollectionOpenUtility::NewL( this, KMcModeIsolated );
+
+    }
+
+
+/*!
+ \internal
+ reimp
+ */
+void CMpMpxIsolatedCollectionHelper::HandleOpenL( 
+    const CMPXMedia& aEntries,
+    TInt /*aIndex*/,
+    TBool /*aComplete*/,
+    TInt aError )
+    {
+    if ( iFirstIncrementalOpen )
+        {
+        iObserver->HandleIsolatedOpenL( aEntries, aError );
+        iFirstIncrementalOpen = EFalse;
+        }
+    }
+
+/*!
+ \internal
+  reimp
+ */
+void CMpMpxIsolatedCollectionHelper::HandleOpenL( 
+    const CMPXCollectionPlaylist& /*aPlaylist*/,
+    TInt /*aError*/ )
+    {
+    }
+
+/*!
+ \internal
+  reimp
+ */
+void CMpMpxIsolatedCollectionHelper::HandleCollectionMessage( 
+    CMPXMessage* /*aMsg*/,
+    TInt /*aErr*/ )
+    {
+    }
+
+/*!
+ \internal
+  reimp
+ */
+void CMpMpxIsolatedCollectionHelper::HandleCollectionMediaL( 
+    const CMPXMedia& /*aMedia*/,
+    TInt /*aError*/ )
+    {
+    }
+    
+//EOF