--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/extras/about/inc/AboutResourceLoader.h	Tue Sep 14 21:21:28 2010 +0300
@@ -0,0 +1,146 @@
+/*
+* Copyright (c) 2010 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: Resource loader for About in order to asynchronous load resource.
+*
+*/
+
+#ifndef ABOUTRESOURCELOADER_H
+#define ABOUTRESOURCELOADER_H
+
+#include <e32base.h>    // For CActive
+#include <barsread.h>    // For TResourceReader
+#include "about.hrh"    // For TAboutItemType;
+
+// Class declaration
+class CEikonEnv;
+class MResourceLoaderObserver;
+class RConeResourceLoader;
+class CAboutResource;
+
+/*
+ * The resource loader for about application.
+ * Resource loader load the resource items asynchronously.
+ */
+class CAboutResourceLoader : public CActive
+    {
+public:
+    // Cancel and destroy
+    ~CAboutResourceLoader();
+
+    // Two-phased constructor.
+    static CAboutResourceLoader* NewL( CEikonEnv* aEikonEnv,
+                            MResourceLoaderObserver* aObserver );
+
+    // Two-phased constructor.
+    static CAboutResourceLoader* NewLC( CEikonEnv* aEikonEnv, 
+                            MResourceLoaderObserver* aObserver );
+
+private:
+    // C++ constructor
+    CAboutResourceLoader( CEikonEnv* aEikonEnv, 
+                    MResourceLoaderObserver* aObserver );
+
+    // Second-phase constructor
+    void ConstructL();
+
+private: //From CActive
+    void RunL();
+    void DoCancel();
+    TInt RunError( TInt aError );
+    
+private:
+    /*
+     * Activate itself.
+     */
+    void Activate();
+    
+public:
+    
+    /*
+     * Start the loader. 
+     * Note: The resource id must be set before this method called,
+     * otherwise, leave with KErrGeneral.
+     */
+    void StartL();
+    
+    /**
+     * Set the id of the resource to be loaded.
+     * @Param aResourceId the id of the resource to be loaded.
+     * @aLoaded Indicate the resource file has been loaded or not.
+     * If the resource file is not load yet, the resource path must
+     * pass to loader.
+     * @aResourcePath the path of the resource file which the resouce stored in.
+     */
+    void SetResourceId( const TInt aResourceId, 
+        const TBool aLoaded, const TDesC& aResourcePath );
+    
+    /**
+     * Get the currentlly resource Id from the loader
+     * @Return The current resource Id 
+     */
+    TInt CurrentResourceId();
+    
+    /*
+     * Get the loaded items array.
+     * @Return The loaded items array.
+     */
+    RPointerArray<CAboutResource>* LoadedResourceItems() const;
+    
+    /*
+     * Delete the loaded items. 
+     */
+    void ReleaseLoadedItems();
+    
+    /*
+     * Return the count of the item in the resource.
+     */
+    TInt ItemCount() const;
+
+private:
+    // Ref: Environment.
+    CEikonEnv* iEnv;
+    
+    // The id of the resource which the stings stored in.
+    TInt iResourceId;
+    
+    // The flag indicates the resource file has been loaded or not.
+    TBool iLoaded;
+    
+    // The path of resource file
+    TFileName iResourcePath;
+    
+    // Ref: Observer
+    MResourceLoaderObserver* iObserver;
+    
+    // Iterator.
+    TInt iItemIterator;
+    
+    // Owned: the buffer for the resource.
+    HBufC8* iResourceBuffer;
+    
+    // Reader.
+    TResourceReader iReader;
+    
+    // The count of the items in the resource.
+    TInt iItemCount;
+    
+    // Owned: Resource file loader.
+    RConeResourceLoader* iLoader;
+    
+    // Owned: the array store the loaded items.
+    RPointerArray<CAboutResource>* iLoadedItem;
+
+    };
+
+#endif // ABOUTRESOURCELOADER_H