photosgallery/viewframework/dataprovider/src/glxbindingset.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:45:44 +0200
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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:    Implemention of bindings required to populate the visual item
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*
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*/
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#include "glxbindingset.h"     // holds the bindings required to populate the visual item
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#include <glxlog.h>            // Logging
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#include <glxtracer.h>
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// ----------------------------------------------------------------------------
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// NewLC
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// ----------------------------------------------------------------------------
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//
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CGlxBindingSet* CGlxBindingSet::NewLC( MGlxBindingObserver& aObserver )
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    {
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    TRACER("CGlxBindingSet::NewLC");
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    CGlxBindingSet* set = new ( ELeave ) CGlxBindingSet( aObserver );
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    CleanupStack::PushL( set );
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    return set;
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    }
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// ----------------------------------------------------------------------------
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// constructor
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// ----------------------------------------------------------------------------
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//
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CGlxBindingSet::CGlxBindingSet( MGlxBindingObserver& aObserver )
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        : iObserver( aObserver )
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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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//
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CGlxBindingSet::~CGlxBindingSet() 
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    {
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    TRACER("CGlxBindingSet::~CGlxBindingSet");
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    iBindings.ResetAndDestroy();
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    }
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// ----------------------------------------------------------------------------
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// AddBindingL
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// ----------------------------------------------------------------------------
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//
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void CGlxBindingSet::AddBindingL( CGlxBinding* aBinding )
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    {
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    TRACER("CGlxBindingSet::AddBindingL");
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    __ASSERT_DEBUG( aBinding, User::Invariant() ); // null binding not accepted
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    iBindings.AppendL( aBinding );
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    //CleanupStack ::Pop( aBinding );
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    aBinding->SetObserver( *this );
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    }
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// ----------------------------------------------------------------------------
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// PopulateT
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// ----------------------------------------------------------------------------
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//
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void CGlxBindingSet::PopulateT( Alf::MulVisualItem& aItem, 
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        const TGlxMedia& aMedia, TBool aIsFocused ) const
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    {
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    TRACER("CGlxBindingSet::PopulateT");
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    const TInt count = iBindings.Count();
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    for ( TInt i = 0; i < count; i++ )
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        {
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        iBindings[i]->PopulateT( aItem, aMedia, aIsFocused );
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        }
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    }
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// ----------------------------------------------------------------------------
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// HasRelevantAttributes
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// ----------------------------------------------------------------------------
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//
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TBool CGlxBindingSet::HasRelevantAttributes( const RArray< TMPXAttribute >& 
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    aAttributes ) const
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    {
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    TRACER("CGlxBindingSet::HasRelevantAttributes");
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    TBool isRelevant = EFalse;
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    TInt count = iBindings.Count();
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    TInt i = -1;
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    while( ++i < count && !isRelevant )
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        {
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        isRelevant = iBindings[i]->HasRelevantAttributes( aAttributes );
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        }
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    GLX_LOG_INFO1("HasRelevantAttributes::isRelevant %d", isRelevant);
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    return isRelevant;
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    }
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// ----------------------------------------------------------------------------
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// HandleFocusChanged
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// ----------------------------------------------------------------------------
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//	
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CGlxBinding::TResponse CGlxBindingSet::HandleFocusChanged( TBool aIsGained) 
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    {
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    TRACER("CGlxBindingSet::HandleFocusChanged");
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    TResponse response = ENoUpdateNeeded;
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    TInt count = iBindings.Count();
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    TInt i = -1;
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    while( ++i < count )
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        {
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        TResponse singleResponse = iBindings[i]->HandleFocusChanged( aIsGained );
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        if ( ENoUpdateNeeded != singleResponse )
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            {
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            response = singleResponse;
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            }
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        }
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    return response;
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    }  
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 // ----------------------------------------------------------------------------
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// HandleItemChanged
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// ----------------------------------------------------------------------------
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//   
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void CGlxBindingSet::HandleItemChangedL(const CMPXCollectionPath& aPath )
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    {
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    TRACER("CGlxBindingSet::HandleItemChangedL");
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    TInt count = iBindings.Count();
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    TInt i = -1;
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    while( ++i < count )
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        {
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         iBindings[i]->HandleItemChangedL(aPath);
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        }
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    }
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// ----------------------------------------------------------------------------
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// HandleBindingChanged
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// ----------------------------------------------------------------------------
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//	
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void CGlxBindingSet::HandleBindingChanged( const CGlxBinding& /*aBinding*/ )
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    {
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    TRACER("CGlxBindingSet::HandleBindingChanged");
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    iObserver.HandleBindingChanged( *this );
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    }
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// ----------------------------------------------------------------------------
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// AddRequirementsL
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// ----------------------------------------------------------------------------
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//	
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void CGlxBindingSet::AddRequirementsL(  CGlxAttributeRequirements& 
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    aAttributeRequirement,TSize aSize )
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    {
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    TRACER("CGlxBindingSet::AddRequirementsL");
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    for(TInt i = 0; i < iBindings.Count(); i++ )
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        {
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        iBindings.operator[](i)->AddRequestL( aAttributeRequirement,aSize);
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        }
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    }
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   161