--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/collectionframework/thumbnailcreator/inc/glxtnfilteravailabletask.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,109 @@
+/*
+* Copyright (c) 2008-2009 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:    Task used for thumbnail availability filter.
+*
+*/
+
+
+
+
+/**
+ * @internal reviewed 30/07/2007 by Simon Brooks
+ */
+
+#ifndef C_GLXTNFILTERAVAILABLETASK_H
+#define C_GLXTNFILTERAVAILABLETASK_H
+
+#include "glxtntask.h"
+
+// Forward declarations
+class CGlxtnFileInfo;
+
+/**
+ * Task to filter a list of media item IDs to include only those which don't
+ * have a high quality thumbnail of a given size.
+ *
+ * @author Dan Rhodes
+ * @ingroup glx_thumbnail_creator
+ */
+NONSHARABLE_CLASS(CGlxtnFilterAvailableTask) : public CGlxtnClientTask
+    {
+public:
+    /**
+    * Two-phased constructor.
+    * @param aItemArray Array of item IDs, from which those with thumbnails
+    *                   should be removed.
+    * @param aSize Size of thumbnail required.
+    * @param aClient Client initiating the request.
+    */
+	static CGlxtnFilterAvailableTask* NewL(
+            	    const TArray<TGlxMediaId>& aItemArray, const TSize& aSize,
+            	    MGlxtnThumbnailCreatorClient& aClient);
+    /**
+    * Destructor.
+    */
+    ~CGlxtnFilterAvailableTask();
+
+protected:  // From CGlxtnTask
+
+    TBool DoStartL(TRequestStatus& aStatus);
+	void DoCancel();
+	TBool DoRunL(TRequestStatus& aStatus);
+    TBool DoRunError(TInt aError);
+
+private:
+    /**
+    * C++ default constructor.
+    * @param aSize Size of thumbnail required.
+    * @param aClient Client initiating the request.
+    */
+    CGlxtnFilterAvailableTask(const TSize& aSize,
+                                MGlxtnThumbnailCreatorClient& aClient);
+    /**
+    * Symbian 2nd phase constructor.
+    * @param aItemArray Array of item IDs, from which those with thumbnails
+    *                   should be removed.
+    */
+	void ConstructL(const TArray<TGlxMediaId>& aItemArray);
+
+    /**
+    * Start asynchronous request for file information for an item.
+    * @param aStatus Request status for the asynchronous operation.
+    */
+    TBool GetFileInfoL(TRequestStatus& aStatus);
+    /**
+    * Start asynchronous check for thumbnail in persistent storage.
+    * @param aStatus Request status for the asynchronous operation.
+    */
+    TBool CheckIdL(TRequestStatus& aStatus);
+
+private:
+    enum TFilterState
+        {
+        EStateFetchingUri, EStateChecking
+        };
+
+    /** Size of thumbnail for which to check */
+    TSize iSize;
+    /** Array of media IDs from which those with thumbnails are removed */
+    RArray<TGlxMediaId> iIdArray;
+    /** Current task state */
+    TFilterState iState;
+    /** Current index in Id array */
+    TInt iIndex;
+    /** File info for current item */
+    CGlxtnFileInfo* iFileInfo;
+    };
+
+#endif  // C_GLXTNFILTERAVAILABLETASK_H