author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 15 Mar 2010 12:40:30 +0200 | |
branch | RCL_3 |
changeset 12 | ce1c7ad1f18b |
parent 11 | 71da52165949 |
child 13 | bcb43dc84c44 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 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: Back command handler |
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* |
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*/ |
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#ifndef C_GLXCOMMANDHANDLERBACK_H |
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#define C_GLXCOMMANDHANDLERBACK_H |
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// INCLUDES |
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#include <e32base.h> |
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#include <glxcommandhandler.h> |
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// FORWARD DECLARATION |
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class MGlxMediaListProvider; |
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class MMPXCollectionUtility; |
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class MMPXViewUtility; |
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class CGlxNavigationalState; |
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class CAknAppUi; |
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/** |
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* @class CGlxCommandHandlerBack |
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* |
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* Command handler that either takes you back to the previously |
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* active view or one step back in the UI hierarchy |
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* |
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*/ |
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NONSHARABLE_CLASS (CGlxCommandHandlerBack) |
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: public CGlxCommandHandler |
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{ |
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private: |
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enum TGlxBackCommandId |
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{ |
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EGlxCmdBack, |
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EGlxCmdPreviousView, |
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EGlxCmdContainerPreviousView, |
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}; |
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public: |
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/** |
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* Create Command handler for going back one step within the |
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* UI Hierarchy |
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* |
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* @param aMediaListProvider media list owner |
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*/ |
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IMPORT_C static CGlxCommandHandlerBack* NewBackCommandHandlerL(); |
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/** |
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* Create Command handler for going back one view when the |
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* current view is outside UI Hierarchy |
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* |
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* @param aMediaListProvider media list owner |
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*/ |
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IMPORT_C static CGlxCommandHandlerBack* NewPreviousViewCommandHandlerL( |
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MGlxMediaListProvider* aMediaListProvider = NULL); |
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/** |
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* Create Command handler for checkig whether to go back one view or two view |
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* when the current view is outside UI Hierarchy |
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* |
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* @param aMediaListProvider media list owner |
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* @param aPrevViewId previous view id |
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*/ |
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IMPORT_C static CGlxCommandHandlerBack* NewContainerPreviousViewCommandHandlerL( |
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MGlxMediaListProvider* aMediaListProvider = NULL, |
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TInt aPrevViewId = 0 ); |
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/** Destructor */ |
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IMPORT_C ~CGlxCommandHandlerBack(); |
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private: |
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/** |
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* Two-phase constructor |
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* |
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* @param aCommandId Command id for command handler |
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* @param aMediaListProvider media list owner |
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* @param aPrevViewId previous view id |
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*/ |
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static CGlxCommandHandlerBack* NewL( |
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TInt aCommandId, |
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MGlxMediaListProvider* aMediaListProvider, |
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TInt aPrevViewId ); |
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/** Second phase constructor */ |
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void ConstructL(TBool aIsContainerList); |
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/** Constructor */ |
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CGlxCommandHandlerBack(MGlxMediaListProvider* aMediaListProvider, |
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TInt aPrevViewId ); |
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// This API to be removed after testing with migration is over |
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/** |
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* check if deletion of container need to be checked |
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*/ |
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// TBool CheckContainerDeletion() const; |
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public: // From MGlxCommandHandler |
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/** |
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* Execute the command, if applicable |
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* @param aCommand The command to handle |
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* @return ETrue iff command was handled |
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*/ |
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TBool ExecuteL( TInt aCommandId); |
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/** |
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* Modify a menu before it is displayed. |
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* @param aResourceId The resource ID of the menu |
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* @param aMenuPane The in-memory representation of the menu pane |
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*/ |
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void DynInitMenuPaneL(TInt aResourceId, CEikMenuPane* aMenuPane); |
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/** |
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* Called when the owning view is activated |
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* @param aViewId The ID of the view |
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*/ |
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void DoActivateL(TInt aViewId); |
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/** |
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* Called when the owning view is deactivated |
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*/ |
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void Deactivate(); |
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/** |
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* Offers key events to the command handler |
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* @param aKeyEvent The key event. |
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* @param aType The type of key event: EEventKey, EEventKeyUp or EEventKeyDown |
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* @return Indicates whether or not the key event was used by this control. EKeyWasNotConsumed or EKeyWasConsumed |
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*/ |
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TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType); |
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/** |
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* Perform any actions needed before the options menu is displayed. |
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* The view calling this must first arrange a wait dialog to be displayed, as this operation may take |
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* a long time to complete |
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*/ |
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void PreDynInitMenuPaneL( TInt aResourceId ); |
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/** |
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* See @ref MGlxCommandHandler::GetRequiredAttributesL |
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* No implementation required |
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*/ |
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void GetRequiredAttributesL(RArray< TMPXAttribute >& /*aAttributes*/, |
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TBool /*aFilterUsingSelection*/, |
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TBool /*aFilterUsingCommandId*/, |
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TInt /*aCommandId*/) const {} |
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private: // data |
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/** Provider of media list */ |
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MGlxMediaListProvider* iMediaListProvider; |
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/** Back functionality that command handler need to execute */ |
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TInt iCurrentCommandId; |
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//Previous view id to be checked |
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TInt iPrevViewId; |
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// Navigational state is stored here |
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CGlxNavigationalState* iNavigationalState; |
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/** |
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* Check for the view activation and avoid previous view activation |
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* till the view activation is called on back |
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*/ |
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TBool iIsViewActivated; |
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/// The AppUI. Not owned |
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CAknAppUi* iAppUi; |
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}; |
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#endif // C_GLXCOMMANDHANDLERBACK_H |