author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 11 May 2010 16:07:20 +0300 | |
branch | RCL_3 |
changeset 24 | 0fd27995241b |
parent 19 | 04becd199f91 |
child 60 | 6c158198356e |
permissions | -rw-r--r-- |
19
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/* |
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* Copyright (c) 2010 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: THIS FILE IS NOT INCLUDED INTO ECLIPSE CVS DELIVERY |
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* Provides a way to invoke some functionality |
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* which can run in ESWT thread only |
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* |
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*/ |
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|
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|
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#ifndef SWTDCOBSERVER_H |
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#define SWTDCOBSERVER_H |
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|
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// Using MSwtDcEventConsumer |
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#include "swtdceventconsumer.h" |
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// Using RPointerArray |
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#include <e32std.h> |
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// Using RMsgQueue |
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#include <e32msgqueue.h> |
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|
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// Forward declarations |
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class MUiEventConsumer; |
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class CCoeControl; |
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|
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/** |
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* Provides a way to make calls to functions which are able |
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* to run in ESWT thread only and |
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* which may origin in non-ESWT thread (MMAPI for instance). |
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* |
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* The calls are kept in queue and processed serially. |
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* |
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* If the call works with some CCoeControl instance, |
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* ther control must be registered by RegisterControl(). |
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* |
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* Some events may invoke a callback into specified callback interface. |
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* The receiver of this callback must not be deleted if there is |
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* a possibility of having some events, which will call this, in queue. |
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* |
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* The callback receiver can for example implement |
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* its instance deletion via event using this observer, |
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* so this deletion event will be the last one for that receiver. |
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* |
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* @lib eswtdirectcontent.dll |
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* @since S60 v5.2 |
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*/ |
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class CSwtDcObserver : public CActive |
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{ |
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public: |
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/** |
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* Constructor. |
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*/ |
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CSwtDcObserver(); |
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|
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/** |
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* Destructor. |
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*/ |
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~CSwtDcObserver(); |
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|
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|
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/** |
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* Asynchronously sends an event into a consumer. |
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* The call may origin in other than ESWT thread. |
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* |
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* @since S60 5.2 |
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* @param aConsumer Consumer which gets event asynchronously. |
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* @param aType An data indicating event type for consumer. |
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*/ |
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virtual void InvokeDcEvent(MSwtDcEventConsumer& aConsumer, TInt aType); |
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|
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/** |
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* Invokes aConsumer->MdcDSAResourcesCallback from ESWT thread. |
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* The call may origin in other than ESWT thread. |
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* |
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* @since S60 5.2 |
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* @param aControl Control used to get DSA resources from. |
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* @param aConsumer Consumer of the callback. The instance |
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* must not be deleted before the event processed. |
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*/ |
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void InvokeDSAResourcesCallback( |
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CCoeControl& aControl, |
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MUiEventConsumer& aConsumer); |
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|
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/** |
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* Invokes aConsumer->MdcUICallback( aCallbackId ) from ESWT thread. |
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* The call may origin in other than ESWT thread. |
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* |
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* @since S60 5.2 |
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* @param aConsumer Consumer of the callback. |
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* @param aCallbackId Id which is provided to the callback |
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*/ |
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void InvokeUICallback(MUiEventConsumer& aConsumer, TInt aCallbackId); |
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private: |
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/** CSwtDcObserver event datatype */ |
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enum TDcEventType |
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{ |
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EDcEvent, |
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EDSAResourcesCallbackEvent, |
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EUICallbackEvent |
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}; |
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/** CSwtDcObserver event content datatype */ |
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struct TDcEventData |
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{ |
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TDcEventType iType; |
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void* iConsumer; |
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void* iParam; |
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}; |
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/** |
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* Sends an event into a consumer. |
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* |
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* @since S60 5.2 |
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* @param aConsumer Consumer of the event. |
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* @param aType Type of event given to the invoke method. |
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*/ |
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void DoDcEvent(MSwtDcEventConsumer* aConsumer, TInt aType); |
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/** |
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* Invokes callback aConsumer->MdcDSAResourcesCallback. |
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* |
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* @since S60 5.2 |
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* @param aControl Control used to get DSA resources from. |
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* @param aConsumer Consumer of the callback. |
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*/ |
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void DoInvokeDSAResourcesCallback( |
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CCoeControl* aControl, |
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MUiEventConsumer *aConsumer); |
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|
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/** |
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* Invokes callback aConsumer->MdcUICallback. |
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* |
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* @since S60 5.2 |
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* @param aConsumer Consumer of the callback. |
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* @param aCallbackId Id which is provided to the callback |
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*/ |
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void DoInvokeUICallback( |
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MUiEventConsumer *aConsumer, |
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TInt aCallbackId); |
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// from base class CActive |
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|
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/** |
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* From CActive. |
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* Handles an active object’s request completion event. |
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* Processes the first available event in queue. |
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* |
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* @since S60 5.2 |
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*/ |
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virtual void RunL(); |
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/** |
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* From CActive. |
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* Implements cancellation of an outstanding request. |
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* |
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* @since S60 5.2 |
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*/ |
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virtual void DoCancel(); |
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private: |
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/** |
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* Event queue to store the call requests |
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* Own. |
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*/ |
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RMsgQueue<TDcEventData> iEventQueue; |
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}; |
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#endif // SWTDCOBSERVER_H |