author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 00:16:03 +0200 | |
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/* |
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: LandmarksUi Content File - This class listens to the changes in the Central Repository |
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* for specific keys and notifies the observer. |
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* |
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*/ |
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#ifndef __CLMKCENTRALREPOSITORY_H__ |
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#define __CLMKCENTRALREPOSITORY_H__ |
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// System Includes |
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#include <e32base.h> |
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// User Includes |
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#include "mlmkcentralrepositoryobserver.h" |
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// Forward Declarations |
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class CRepository; |
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// Constant Declarations |
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// Class Definition |
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/** |
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* This class listens to the change in value of specified key, in the central repository. |
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* When there is any change, it notifies to the observer. |
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* This class can also be used, without notification, just to get key values from |
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* central repository. |
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* To make it start listening on a specific key value change, create an instance of |
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* this class using the argumented NewL/NewLC functions. |
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* A request can only be cancelled, when the object of this class |
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* is deleted. |
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*/ |
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NONSHARABLE_CLASS( CLmkCentralRepository ) : public CActive |
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{ |
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public: |
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/** |
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* Creates new central repository listener |
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* |
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* @return CLmkCentralRepository* Pointer to self |
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*/ |
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static CLmkCentralRepository* NewL(); |
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/** |
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* Creates new central repository listener |
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* Leaves the object on the Clean up stack |
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* |
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* @return CLmkCentralRepository* Pointer to self |
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*/ |
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static CLmkCentralRepository* NewLC(); |
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/** |
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* Creates new central repository listener |
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* |
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* @param aKey Key, on which change is being listened. |
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* @param aObserver Observer, which will be called when |
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* there is any change in the specified key |
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* value. |
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* @return CLmkCentralRepository* Pointer to self |
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*/ |
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static CLmkCentralRepository* NewL( TUint32 aKey , |
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MLmkCentralRepositoryObserver* aObserver); |
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/** |
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* Creates new central repository listener |
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* Leaves the object on the Clean up stack |
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* |
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* @param aKey Key, on which change is being listened. |
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* @param aObserver Observer, which will be called when |
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* there is any change in the specified key |
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* value. |
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* @return CLmkCentralRepository* Pointer to self |
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*/ |
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static CLmkCentralRepository* NewLC( TUint32 aKey , |
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MLmkCentralRepositoryObserver* aObserver); |
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/** |
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* Destructor |
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*/ |
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~CLmkCentralRepository (); |
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public: |
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/** |
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* Start notification from the Central repository server for any changes in the |
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* in the specified key value. |
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* |
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* @panic Panics with code KLmkPanicNullMember, when no observer |
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* is set. |
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* Panics with code KLmkKeyNotSet, when no key is set. |
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* |
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* @return TInt KErrNone if successful, KErrAlreadyExists if there is already |
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* a notification from this CRepository on this setting, or an |
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* error from IPC or server side resource allocation failure. |
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*/ |
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TInt StartNotification(); |
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|
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/** |
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* Gets the value for the specified key, from central repository. |
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* @param aKey Key for which, value is being fetched. |
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* @param[out]aValue Fetched value from central repository. |
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*/ |
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TInt GetKeyValue(TUint32 aKey, TInt& aValue); |
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|
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protected: |
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/** |
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* Inherited from CActive |
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*/ |
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void RunL(); |
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|
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/** |
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* Inherited from CActive |
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*/ |
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void DoCancel(); |
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|
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private: |
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/** |
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* Constructor |
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*/ |
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CLmkCentralRepository( TUint32 aKey , |
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MLmkCentralRepositoryObserver* aObserver); |
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|
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/** |
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* Second Phase Constructor |
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*/ |
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void ConstructL(); |
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/** |
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* Second Phase Constructor |
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*/ |
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void Construct2L(); |
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|
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|
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private: |
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|
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/** |
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* Key, which is being observed for any change, in its value. |
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*/ |
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const TUint32 iKey; |
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/** |
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* Reference to the Settings observer |
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*/ |
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MLmkCentralRepositoryObserver* iObserver; |
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|
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/** |
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* Reference to the Central repository object |
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* |
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* Owns |
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*/ |
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CRepository* iRepository; |
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}; |
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|
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|
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#endif //__CLMKCENTRALREPOSITORY_H__ |