author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 25 May 2010 12:29:32 +0300 | |
branch | RCL_3 |
changeset 25 | 137ebc85284b |
parent 0 | f72a12da539e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007 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: Application UI class |
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* Version : %version: 2 % << Don't touch! Updated by Synergy at check-out. |
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*/ |
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#ifndef HNITEMFOCUSHANDLER_H |
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#define HNITEMFOCUSHANDLER_H |
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|
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#include <e32base.h> |
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#include <e32std.h> |
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|
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class CHnSuiteModel; |
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/** |
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* Class representing the focus item to be queued. |
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* |
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* @lib hnpresentationmodel |
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* @since S60 5.0 |
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* @ingroup group_hnpresentationmodel |
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*/ |
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class TFocusQueueItem |
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{ |
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public: |
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/** |
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* Constructor. Sets the trigger time on construction. |
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* |
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* @since S60 v5.0 |
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* @param aItemId Index of the item in the suite model. |
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*/ |
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TFocusQueueItem( TInt aItemId, TInt aEventId ); |
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|
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/** |
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* Fetches the focus item trigger time. |
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* |
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* @since S60 v5.0 |
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* @return Time when the event was triggered. |
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*/ |
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TTime TriggerTime(); |
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|
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/** |
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* Fetches the focus/unfocus item id. |
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* |
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* @since S60 v5.0 |
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* @return Suite model item id of the focused/unfocused item. |
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*/ |
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TInt ItemId(); |
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/** |
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* Fetches the focus/unfocus item id. |
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* |
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* @since S60 v5.0 |
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* @return Suite model item id of the focused/unfocused item. |
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*/ |
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TInt EventId(); |
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/** |
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* Compares queued items by triggered time. |
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* |
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* @since S60 v5.0 |
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* @param aItem1 First item to compare. |
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* @param aItem2 Second item to compare. |
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* @return 1 if aItem1 was triggered earlier than aItem2. |
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* -1 if aItem1 was triggered later than aItem2. |
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* 0 if aItem1 was triggered at the same time as aItem2. |
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*/ |
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static TInt CompareByTriggerTime( const TFocusQueueItem& aItem1, |
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const TFocusQueueItem& aItem2 ); |
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/** |
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* Compares queued items by triggered time. |
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* |
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* @since S60 v5.0 |
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* @param aItem1 First item to compare. |
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* @param aItem2 Second item to compare. |
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* @return ETrue if aItem1 is equal to aItem2 regarding the item id. |
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* EFalse if aItem1 is not equal to aItem2 regarding the item id. |
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*/ |
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static TBool CompareByItemId( const TFocusQueueItem& aItem1, |
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const TFocusQueueItem& aItem2 ); |
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private: |
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/** |
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* Item id. |
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* Own. |
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*/ |
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TInt iItemId; |
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/** |
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* Trigger time. |
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* Own. |
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*/ |
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TTime iTriggerTime; |
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/** |
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* Event type. |
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*/ |
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TInt iEventId; |
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}; |
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/** |
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* Item focus handler class. |
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* |
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* This is an active object which handles focus/unfocus event triggering. |
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* This class causes focus/unfocus events to be run without performance impact |
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* on the UI. The focus/unfocus events are queued. If incoming events logically |
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* cancel the queued events, the appropriate events are removed from the queue. |
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* |
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* @lib hnpresentationmodel |
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* @since S60 5.0 |
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* @ingroup group_hnpresentationmodel |
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*/ |
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NONSHARABLE_CLASS( CHnItemFocusHandler ) : public CActive |
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{ |
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public: |
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/** |
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* Virtual Destructor. |
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* |
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* @since S60 5.0 |
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*/ |
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~CHnItemFocusHandler(); |
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/** |
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* Two-phased constructor. |
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* |
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* @since S60 5.0 |
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* @param aSuiteModel The suite model for which focus events are handled. |
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*/ |
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static CHnItemFocusHandler* NewL( CHnSuiteModel* aSuiteModel ); |
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/** |
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* Two-phased constructor. |
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* |
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* @since S60 5.0 |
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* @param aSuiteModel The suite model for which focus events are handled. |
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*/ |
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static CHnItemFocusHandler* NewLC( CHnSuiteModel* aSuiteModel ); |
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public: |
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/** |
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* Called to initiate item focus action handling. |
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* |
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* @since S60 v5.0 |
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* @param aEventId The type of event. Can be KIdFocusGain or KIdFocusLost. Otherwise focus actions are not triggered. |
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* @param aItemId Index of the item in the suite model. |
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*/ |
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void SetFocusL( TInt aEventId, TBool aItemId ); |
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private: |
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/** |
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* C++ default constructor. |
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* |
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* @since S60 v5.0 |
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*/ |
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CHnItemFocusHandler(); |
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|
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/** |
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* Second-phase constructor. |
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* |
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* @since S60 v5.0 |
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* @param aSuiteModel The suite model for which focus events are handled. |
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*/ |
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void ConstructL( CHnSuiteModel* aSuiteModel ); |
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|
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private: |
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/** |
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* Handles completion. In fact the request is completed immediately after activating the object. |
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* This method calls focus/unfocus action events. |
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* |
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* @since S60 v5.0 |
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*/ |
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void RunL(); |
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|
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/** |
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* Run when request is cancelled. |
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*/ |
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void DoCancel(); |
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/** |
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* Overriden to handle leaves from RunL(). Default implementation causes |
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* the active scheduler to panic. |
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* |
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* @since S60 v5.0 |
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* @param aError The Error code. |
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* @return Id The eroor code. |
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*/ |
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TInt RunError(TInt aError); |
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/** |
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* Removes duplicated items. E.g. if a request to focus an item has been triggered |
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* when there is still a request to unfocus that item pending in the queue. Then the unfocus |
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* event will be removed from the queue and the event and only the focus event is triggered. |
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* |
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* @since S60 v5.0 |
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* @param aFocusItem The item to be compared. |
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* @param aEventId focus or unfocus event. |
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*/ |
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void RemoveDuplicatedItem( const TFocusQueueItem& aFocusItem ); |
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private: |
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/** |
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* The suite model for which focus events are handled. |
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* Not own. |
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*/ |
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CHnSuiteModel* iSuiteModel; |
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/** |
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* Focus Queue. |
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* Own. |
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*/ |
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RArray<TFocusQueueItem> iFocusQueue; |
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}; |
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#endif // HNITEMFOCUSHANDLER_H |