menufw/menufwui/mmwidgets/src/mmitemsdatacache.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 20:10:36 +0200
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child 4 4d54b72983ae
permissions -rw-r--r--
Revision: 201001 Kit: 201003
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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:
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* Version     : 2 << Don't touch! Updated by Synergy at check-out.
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*
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*/
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#include "mmitemsdatacache.h"
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#include "mmcacheforitem.h"
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const TInt KItemCacheArrGranularity = 20;
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmItemsDataCache* CMmItemsDataCache::NewLC()
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    {
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    CMmItemsDataCache* self = new (ELeave) CMmItemsDataCache();
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    return self;
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmItemsDataCache* CMmItemsDataCache::NewL()
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    {
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    CMmItemsDataCache* self = NewLC();
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    CleanupStack::Pop( self );
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    return self;
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmCacheForItem* CMmItemsDataCache::GetItemCacheL( TInt aItemIndex )
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    {
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    ASSERT( aItemIndex >= 0 );
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    while ( iItemCacheArr.Count() <= aItemIndex )
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        {
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        CMmCacheForItem* cacheForItem = CMmCacheForItem::NewLC( *this );
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        iItemCacheArr.AppendL( cacheForItem );
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        CleanupStack::Pop( cacheForItem );
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        }
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    return iItemCacheArr[aItemIndex];
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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TInt CMmItemsDataCache::GetTemplateIdentifierL( const TDesC8& aTemplateName )
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    {
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    TInt identifier = KErrNotFound;
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    // this looks very primitive, but RPointerArray::FindL just compares pointers
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    // so I guess there is no other way
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    TInt templateCount = iTemplateNames.Count();
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    for ( TInt i = 0; i < templateCount; ++i )
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        {
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        if ( iTemplateNames[i]->Compare( aTemplateName ) == 0 )
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            {
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            identifier = i;
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            break;
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            }
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        }
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    if ( identifier == KErrNotFound )
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        {
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        HBufC8* templateNameCopy = HBufC8::NewLC( aTemplateName.Length() );
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        templateNameCopy->Des().Copy( aTemplateName );
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        iTemplateNames.AppendL( templateNameCopy );
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        CleanupStack::Pop( templateNameCopy );
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        identifier = iTemplateNames.Count() - 1;
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        }
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    return identifier;
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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const TDesC8& CMmItemsDataCache::GetTemplateNameByIdentifier(
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        TInt aTemplateIdentifier ) const
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    {
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    return *( iTemplateNames[aTemplateIdentifier] );
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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void CMmItemsDataCache::Invalidate()
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    {
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    const TInt count = iItemCacheArr.Count();
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    for ( TInt i = 0; i < count; ++i )
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        {
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        iItemCacheArr[i]->SetValid( EFalse );
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        }
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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void CMmItemsDataCache::Trim( TInt aItemCount )
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    {
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    __ASSERT_ALWAYS( aItemCount >= 0, User::Invariant() );
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    for ( TInt i = iItemCacheArr.Count() - 1; i >= aItemCount; --i )
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        {
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        CMmCacheForItem* cache = iItemCacheArr[i];
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        iItemCacheArr.Remove( i );
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        delete cache;
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        }
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmItemsDataCache::~CMmItemsDataCache()
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    {
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    iItemCacheArr.ResetAndDestroy();
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    iItemCacheArr.Close();
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    iTemplateNames.ResetAndDestroy();
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    iTemplateNames.Close();
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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CMmItemsDataCache::CMmItemsDataCache()
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    : iItemCacheArr( KItemCacheArrGranularity )
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    {
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    }
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// -----------------------------------------------------------------------------
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//
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// -----------------------------------------------------------------------------
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//
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void CMmItemsDataCache::ConstructL()
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    {
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    }