--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/phoneengine/PhoneCntFinder/inc/Misc/CPhCntThumbnailLoaderImpl.h Wed Sep 01 12:30:10 2010 +0100
@@ -0,0 +1,265 @@
+/*
+* Copyright (c) 2002 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: Concrete interface for loading thumbail images.
+*
+*/
+
+
+#ifndef CPHCNTTHUMBNAILLOADERIMPL_H
+#define CPHCNTTHUMBNAILLOADERIMPL_H
+
+// INCLUDES
+#include "cphcntthumbnailloader.h"
+#include "mphcntthumbnailloader.h"
+
+// FORWARD DECLARATIONS
+class MPhoneCntPbkOwner;
+class MPhCntThumbnailLoaderObserver;
+class CPbkContactItem;
+class CPbkThumbnailManager;
+class MPbkThumbnailOperation;
+class CPhCntContactId;
+
+// CLASS DECLARATION
+
+/**
+* It loads thumbail images.
+*
+* Note that it is considered that loading of thumbnail images is not critical.
+* Thus, if something fails during loading procedure, then we ignore the whole
+* thumbnail.
+*
+* However, observer will be informed of both success and failure.
+*
+* @lib PhoneCntFinder
+* @since 1.0
+*/
+NONSHARABLE_CLASS( CPhCntThumbnailLoaderImpl )
+ : public CPhCntThumbnailLoader,
+ private MPhCntLoaderObserver
+ {
+ public: // Constructors and destructor
+
+ /**
+ * Two-phased constructor.
+ */
+ static CPhCntThumbnailLoaderImpl* NewL(
+ MPhCntThumbnailLoaderObserver& aObserver,
+ MPhoneCntPbkOwner& aPbkOwner,
+ MPhCntThumbnailLoader& aLoader );
+
+ /**
+ * Destructor.
+ */
+ ~CPhCntThumbnailLoaderImpl();
+
+ public: // Functions from base classes
+
+ /**
+ * From CPhCntThumbnailLoader
+ */
+ TInt Load( TThumbnailId& aId, const CPhCntContactId& aContactId );
+
+ /**
+ * From CPhCntThumbnailLoader
+ */
+ void Cancel( TThumbnailId aId );
+
+ /**
+ * Indication that loading has been made.
+ *
+ * @since S60 v3.0
+ * @param Pointer of bitmap loaded, ownership is given to caller.
+ * May be null if error occured during loading.
+ * @param aError Error code of loading.
+ */
+ void LoadingCompleted( CFbsBitmap* aBitmap, TInt aError );
+
+ private:
+
+ /**
+ * It contains necessary information to load a thumbnail.
+ */
+ struct TThumbnailInfo
+ {
+ // It contains index.
+ TThumbnailId iId;
+
+ // Identifies the contact, which thumbnail is going to be loaded.
+ CPhCntContactId* iContactId;
+ };
+
+ /**
+ * It enumerates all states.
+ */
+ enum TState
+ {
+ ELoadFromContact,
+ EProcessResult
+ };
+
+ /**
+ * C++ constructor.
+ */
+ CPhCntThumbnailLoaderImpl(
+ MPhCntThumbnailLoaderObserver& aObserver,
+ MPhoneCntPbkOwner& aPbkOwner,
+ MPhCntThumbnailLoader& aLoader );
+
+ /**
+ * Symbian OS constructor.
+ */
+ void ConstructL( MPhoneCntPbkOwner& aPbkOwner );
+
+ /**
+ * Attempts to start loading of thumbnail.
+ */
+ void AttemptLoadL(
+ TThumbnailId aId,
+ const CPhCntContactId& aContactId );
+
+ /**
+ * Starts loading next thumbnail.
+ */
+ void StartLoadL();
+
+ /**
+ * Cancels loading.
+ */
+ void CancelLoad();
+
+ /**
+ * Processes the result.
+ */
+ void ProcessResultL();
+
+ /**
+ * Finds position in array by thumbnail id.
+ *
+ * @param aId id.
+ * @return position or KErrNotFound if not found.
+ */
+ TInt FindById( TThumbnailId aId );
+
+ /**
+ * Starts loading. If it failed, then simply inform
+ * observer about failure.
+ */
+ void DoStartLoad();
+
+ /**
+ * Handles start.
+ */
+ void HandleStartL();
+
+ /**
+ * Handles start; calls HandleStartL in trap harnness.
+ */
+ void HandleStart();
+
+ /**
+ * Starts bridge.
+ */
+ void Start( TState aState );
+
+ /**
+ * Idle callback.
+ */
+ static TInt DoStart( TAny* aAny );
+
+ /**
+ * It gives thumbnail to the observer.
+ *
+ * Ownership of the bitmap is transferred to the client.
+ *
+ * @param aResult error code.
+ * @param aBitmap bitmap or NULL if no bitmap loaded.
+ */
+ void Notify(
+ TThumbnailId aId,
+ TInt aResult,
+ CFbsBitmap* aBitmap );
+
+ /**
+ * Clears all pbk stuff.
+ */
+ void ClearPbk( TBool aMore = ETrue );
+
+ /**
+ * Compares ids of two structure.
+ *
+ * @return ETrue iff aFirst.iId == aSecond.iId.
+ */
+ static TBool CompareIds(
+ const TThumbnailInfo& aFirst,
+ const TThumbnailInfo& aSecond );
+
+ /**
+ * It is enumeration of all panic reasons.
+ */
+ enum TPanicReason
+ {
+ EPanicInvariant,
+ EPanicInvalidState
+ };
+
+ /**
+ * Panics.
+ *
+ * @param aReason reason for panic.
+ */
+ static void Panic( TPanicReason aReason );
+
+ void ClearThumbnailArray();
+
+ void RemoveThumbnailArrayEntry( TInt aIndex );
+
+ private: // Data
+
+ /**
+ * It is type for array of thumbnail info.
+ */
+ typedef RArray< TThumbnailInfo > RThumbnailArray;
+
+ // Ref: Observer.
+ MPhCntThumbnailLoaderObserver& iObserver;
+
+ // Owned: array of thumbnails to load.
+ RThumbnailArray iArray;
+
+ // Owned: active bridge
+ CIdle* iBridge;
+
+ // INFORMATION OF LOADING..
+
+ // Current state.
+ TState iState;
+
+ // Currently loading. System is loading iff iCurrent != KNullId.
+ TThumbnailId iCurrent;
+
+ // Current bitmap.
+ CFbsBitmap* iBitmap;
+
+ /**
+ * Thumbnail loader.
+ * Own.
+ */
+ MPhCntThumbnailLoader* iLoader;
+
+ };
+
+#endif // CPHCNTTHUMBNAILLOADERIMPL_H
+
+// End of File