camerauis/cameraapp/generic/src/CamContextAwareSettingPage.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 16:18:56 +0200
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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:  Setting page for CAknEnumeratedItems.*
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*/
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// INCLUDE FILES
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#include <AknSettingItemList.h>
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#include "CamContextAwareSettingPage.h"
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#include "CamAppController.h"
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#include "CamAppUiBase.h"
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#include "camlogging.h"
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// CONSTANTS
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// ============================ MEMBER FUNCTIONS ===============================
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// ---------------------------------------------------------------------------
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// CCamContextAwareSettingPage::CCamContextAwareSettingPage
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// C++ constructor
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// ---------------------------------------------------------------------------
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//
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CCamContextAwareSettingPage::CCamContextAwareSettingPage( 
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    const TDesC* aSettingText, 
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    TInt aSettingNumber, 
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    TInt aControlType,
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    TInt aEditorResourceId, 
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    TInt aSettingPageResourceId, 
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    MAknQueryValue& aQueryValue,
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    CAknEnumeratedTextPopupSettingItem& aParent,
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    CCamAppController& aController )
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    : CAknPopupSettingPage( aSettingText, aSettingNumber, aControlType,
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    aEditorResourceId, aSettingPageResourceId, aQueryValue ), 
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    iParent( aParent ), iController( aController )
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    {
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    }
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/**
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* Destructor
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*/
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CCamContextAwareSettingPage::~CCamContextAwareSettingPage()
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  {
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  PRINT( _L("Camera => ~CCamContextAwareSettingPage") );
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  if ( iTimer )
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    {
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    iTimer->Cancel();
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    delete iTimer;
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    }
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	TRAP_IGNORE( iController.CancelPreviewChangesL() );
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  PRINT( _L("Camera <= ~CCamContextAwareSettingPage") );
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  }
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// ---------------------------------------------------------------------------
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// CCamContextAwareSettingPage::ConstructL
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// Construct the setting page
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// ---------------------------------------------------------------------------
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//
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void CCamContextAwareSettingPage::ConstructL()
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	{
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    CAknPopupSettingPage::ConstructL();
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    // create the timer used for callbacks
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    iTimer = CPeriodic::NewL( CActive::EPriorityStandard );
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	}
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// ---------------------------------------------------------------------------
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// CCamContextAwareSettingPage::PostDisplayCheckL
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// Pushes the navicounter onto the navipane, and then calls the base class
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// PostDisplayCheckL()
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// ---------------------------------------------------------------------------
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//
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TBool CCamContextAwareSettingPage::PostDisplayCheckL()
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    {
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    // This appears to be the best place to push the navicounter,
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    // so that it overwrites the navipane created by the 
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    // CAknSettinPage::ExecuteLD()
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    CCamAppUiBase* appUi = (CCamAppUiBase*)iEikonEnv->EikAppUi();
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    appUi->PushNaviPaneCounterL();
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    return CAknPopupSettingPage::PostDisplayCheckL();
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    }
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// ---------------------------------------------------------------------------
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// CCamContextAwareSettingPage::UpdateSettingL
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// Called when the state of the list box changes.
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// ---------------------------------------------------------------------------
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//
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void CCamContextAwareSettingPage::UpdateSettingL()
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    {
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    // Determine whether the currently highlighted list item
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    // is enabled or not, and update the cba.
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    // ...Get the current list item index.
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    TInt currentIndex = ListBoxControl()->View()->CurrentItemIndex();
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    // ...Dertemine the settings model id associated with the current
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    // ...list item.
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    iCurrentVal = iParent.EnumeratedTextArray()->
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        At( currentIndex )->EnumerationValue();
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    // ...Determine whether the settings model value is enabled or disabled.
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    TBool settingValueEnabled = 
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        iController.SettingValueEnabled( iParent.Identifier(), iCurrentVal );
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    // ...Inform the base setting page class, and update the cba
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	SetDataValidity( settingValueEnabled );
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	UpdateCbaL();
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   116
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    // If the list item is enabled update the navi-pane to 
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    // let the user know how this item would affect the available photo
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    // counter.
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    if ( settingValueEnabled )
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        {
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        if ( iTimer->IsActive() )
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            {
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            iTimer->Cancel();
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            }
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        iTimer->Start( 0, 0,  TCallBack( PreviewSettingChange, this ) );
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        }
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    }
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// ---------------------------------------------------------------------------
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// CCamContextAwareSettingPage::ProcessCommandL
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// Processes events from the softkeys.
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// ---------------------------------------------------------------------------
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//
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void CCamContextAwareSettingPage::ProcessCommandL(TInt aCommandId)
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	{
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	HideMenu();
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	// Respond to softkey events
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	switch (aCommandId)
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		{
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		case EAknSoftkeyOk:
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		case EAknSoftkeySelect:  
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			SelectCurrentItemL(); // has non-trivial implementations in listbox type 
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										// controls to put the selection on the current item
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			AttemptExitL( ETrue );
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            iController.CommitPreviewChanges();
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			break;
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		case EAknSoftkeyCancel:
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			AttemptExitL( EFalse );
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            iController.CancelPreviewChangesL();
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			break;
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		default:
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			break;
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		}
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	}
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   157
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// ---------------------------------------------------------------------------
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// CCamContextAwareSettingPage::PreviewSettingChangeL
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// Previews the setting value
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// ---------------------------------------------------------------------------
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//
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TInt CCamContextAwareSettingPage::PreviewSettingChange( TAny* aAny )
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    {
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    CCamContextAwareSettingPage* settingPage = 
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        static_cast<CCamContextAwareSettingPage*>( aAny );
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   167
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   168
    // preview the setting value - will 
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   169
    // update the engine and the navi couner
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    TRAPD( ignore, settingPage->iController.PreviewSettingChangeL( 
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        settingPage->iParent.Identifier(), settingPage->iCurrentVal ) );
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   172
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   173
	if(ignore)
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		{
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		// Lint error removal
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   176
		}
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   177
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    // cancel the timer
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   179
    settingPage->iTimer->Cancel();
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    return KErrNone;
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   182
    }