author | William Roberts <williamr@symbian.org> |
Tue, 16 Mar 2010 16:12:26 +0000 | |
branch | Symbian2 |
changeset 2 | 2fe1408b6811 |
parent 0 | 061f57f2323e |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.symbianfoundation.org/legal/licencesv10.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: Property listener callback interface |
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* |
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*/ |
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#ifndef SENSRVPROPERTYLISTENER_H |
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#define SENSRVPROPERTYLISTENER_H |
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#include <e32base.h> |
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#include <sensrvtypes.h> |
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#include <sensrvproperty.h> |
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#include <sensrvchannel.h> |
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// CLASS DECLARATIONS |
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/** |
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* Property listener callback interface to indicate when a property has changed or when |
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* clients access to setting properties has changed. |
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* |
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* This class is for use with the CSensrvChannel::SetPropertyListenerL() method. Clients wishing |
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* to use property listening must inherit from this class and provide a reference to an instance |
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* of it in CSensrvChannel::SetPropertyListenerL(). |
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* |
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* @see CSensrvChannel::SetPropertyListenerL() |
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* @lib sensrvclient.lib |
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* @since S60 5.0 |
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*/ |
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class MSensrvPropertyListener |
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{ |
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public: |
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/** |
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* Callback implemented by a client so that they can be notified when the value of a |
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* property has changed. The client that set the property will not be notified. |
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* |
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* Clients providing an implementation for this callback must ensure that the operation does |
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* not leave. If a leave does occur then the behaviour is undefined. |
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* |
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* @since S60 5.0 |
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* @param aChannel Channel associated with the listener |
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* @param aChangedProperty The property that has changed |
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*/ |
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virtual void PropertyChanged( CSensrvChannel& aChannel, |
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const TSensrvProperty& aChangedProperty ) = 0; |
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|
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/** |
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* Callback implemented by a client so that they can be notified when property listening |
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* has failed. If the error is fatal the channel will be closed, the sensor server session |
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* has been terminated and the channel object is no longer useable. If the error is minor, |
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* some property changes have potentially been missed, however listening is still active. |
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* |
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* Clients providing an implementation for this callback must ensure that the operation does |
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* not leave. If a leave does occur then the behaviour is undefined. |
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* |
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* @since S60 5.0 |
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* @param aChannel Channel associated with the listener |
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* @param aError The error severity |
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*/ |
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virtual void PropertyError( CSensrvChannel& aChannel, |
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TSensrvErrorSeverity aError ) = 0; |
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/** |
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* Callback implemented by a client so that they can be notified when the clients access for |
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* setting properties has changed. |
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* |
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* Clients providing an implementation for this callback must ensure that the operation does |
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* not leave. If a leave does occur then the behaviour is undefined. |
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* |
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* @since S60 5.0 |
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* @param aIndication Indication of the clients access for setting of properties |
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*/ |
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virtual void SetPropertySuccessIndicationChanged( |
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TSetPropertySuccessIndicator aIndication ) = 0; |
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/** |
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* Callback to future proof this API so that additional callbacks can be added in the future |
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* without breaking binary compatibility. |
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* |
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* @param aInterfaceUid Identifier for the interface to be retrieved |
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* @param aInterface A reference to a pointer for the specified interface. Implementation sets |
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* aInterface to a valid pointer if the M-class identified by aInterfaceUid is supported, otherwise |
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* it is set to NULL on exit. |
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* |
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* @since S60 5.0 |
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* @leave One of the system-wide error codes |
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*/ |
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virtual void GetPropertyListenerInterfaceL( TUid aInterfaceUid, TAny*& aInterface ) = 0; |
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}; |
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#endif //SENSRVPROPERTYLISTENER_H |
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// End of File |