idlehomescreen/widgetmanager/src/wmwidgetloaderao.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 00:04:13 +0200
changeset 5 c743ef5928ba
parent 2 08c6ee43b396
child 9 f966699dea19
permissions -rw-r--r--
Revision: 201003 Kit: 201005
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/*
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* Copyright (c) 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:
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* Active object to load widgets into list
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*
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*/
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// INCLUDE FILES
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#include "wmcommon.h"
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#include "wmplugin.h"
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#include "wmresourceloader.h"
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#include "wmpersistentwidgetorder.h"
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#include "wmlistbox.h"
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#include "wmwidgetloaderao.h"
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#include "wminstaller.h"
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#include <hscontentcontroller.h> // content control api
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#include <hscontentinfoarray.h> // content control api
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#include <widgetregistryclient.h> // widget reqistry
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#include <avkon.rsg> // avkon resources
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#include <barsread.h> // TResourceReader
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// ---------------------------------------------------------------------------
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// CWmWidgetLoaderAo::NewL
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// ---------------------------------------------------------------------------
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//
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CWmWidgetLoaderAo* CWmWidgetLoaderAo::NewL(
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        CWmPlugin& aWmPlugin,
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        CWmListBox& aTargetList )
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    {
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    CWmWidgetLoaderAo* self = new (ELeave) CWmWidgetLoaderAo(
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            aWmPlugin, aTargetList );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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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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// CWmWidgetLoaderAo::NewL
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// ---------------------------------------------------------------------------
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//
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CWmWidgetLoaderAo::CWmWidgetLoaderAo(
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        CWmPlugin& aWmPlugin,
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        CWmListBox& aTargetList )
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    : CAsyncOneShot( EPriorityStandard )
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    , iWmPlugin( aWmPlugin )
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    , iWidgetsList( aTargetList )
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    {
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    iWidgetRegistry = NULL;
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    iWidgetOrder = NULL;
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    }
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// ---------------------------------------------------------------------------
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// CWmWidgetLoaderAo::ConstructL
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// ---------------------------------------------------------------------------
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//
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void CWmWidgetLoaderAo::ConstructL()
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    {
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    }
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// ---------------------------------------------------------------------------
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// CWmWidgetLoaderAo::~CWmWidgetLoaderAo
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// ---------------------------------------------------------------------------
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//
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CWmWidgetLoaderAo::~CWmWidgetLoaderAo()
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    {
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    // cancel ongoing operation
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    Cancel();
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    // cleanup run data
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    Cleanup();
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    }
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// ---------------------------------------------------------------------------
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// CWmWidgetLoaderAo::StartLoading
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// ---------------------------------------------------------------------------
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//
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void CWmWidgetLoaderAo::StartLoading()
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    {
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    if ( IsActive() )
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        {
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        // cancel ongoing process
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        Cancel();
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        }
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    Call();
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    }
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// ---------------------------------------------------------------------------
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// CWmWidgetLoaderAo::RunL
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// ---------------------------------------------------------------------------
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//
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void CWmWidgetLoaderAo::RunL()
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    {
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    DoLoadWidgetsL();
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    Cleanup();
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    }
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// ---------------------------------------------------------------------------
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// CWmWidgetLoaderAo::RunError
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// ---------------------------------------------------------------------------
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//
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TInt CWmWidgetLoaderAo::RunError( TInt /*aError*/ )
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    {
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    Cleanup();
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    return KErrNone;
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    }
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// ---------------------------------------------------------
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// CWmWidgetLoaderAo::DoLoadWidgetsL
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// ---------------------------------------------------------
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//
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void CWmWidgetLoaderAo::DoLoadWidgetsL()
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    {
5
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    // Check if unistallation is ongoing for for some widget
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	// iUninstallUid is null no uninstallation is ongoing
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    iUninstallUid = iWmPlugin.WmInstaller().UninstallUid();
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2
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    // 1. load the widgets array
1
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    MHsContentController& controller = iWmPlugin.ContentController();    
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    CHsContentInfoArray* contentInfoArray = CHsContentInfoArray::NewL();
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    CleanupStack::PushL( contentInfoArray );
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    controller.WidgetListL( *contentInfoArray );
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2
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    // 2. load the widget order
1
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    iWidgetOrder = CWmPersistentWidgetOrder::NewL( iWmPlugin.FileServer() );
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    TRAPD( loadError, iWidgetOrder->LoadL() );
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2
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    // 3. prepare the widget data list
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    for( TInt i=0; i<iWidgetsList.WidgetDataCount(); ++i )
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        {
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        iWidgetsList.WidgetData(i).SetPersistentWidgetOrder( iWidgetOrder );
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        iWidgetsList.WidgetData(i).SetValid( EFalse );
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        }
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1
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    // 4. loop through the content array and compare it against the existing
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    // widget data.
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    TInt widgetsAdded = 0;
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    TInt widgetsChanged = 0;
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    while( contentInfoArray->Array().Count() > 0 )
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        {
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        CHsContentInfo* contentInfo = contentInfoArray->Array()[0];
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        contentInfoArray->Array().Remove( 0 );
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        // check if this widget exists.
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        // if it does, keep the existing one
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        // if it does not, add it
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        CWmWidgetData* existingData = FindWidgetData( *contentInfo );
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        if ( existingData )
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            {
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            // update existing widget data
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            existingData->SetValid( ETrue );
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            if ( existingData->ReplaceContentInfoL( contentInfo ) )
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                {
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                ++widgetsChanged;
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                }
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            }
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        else
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            {
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            // add a new widget data
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            AddWidgetDataL( contentInfo );
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            ++widgetsAdded;
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            }
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        }
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    // 5: finally, remove all UI widgets that during the loading process were
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    // NOT marked as VALID. those widgets do not exist anymore.
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    TInt widgetsRemoved = 0;
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    for( TInt i=0; i<iWidgetsList.WidgetDataCount(); i++ )
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        {
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        if( !iWidgetsList.WidgetData(i).IsValid() )
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            {
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            iWidgetsList.RemoveWidgetData( i );
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            ++widgetsRemoved;
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            }
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        }
2
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    // update listbox
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    if ( widgetsAdded > 0 )
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        {
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        iWidgetsList.HandleItemAdditionL();
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        }
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    if ( widgetsRemoved > 0 || widgetsAdded > 0 ||
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        widgetsChanged > 0 )
1
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        {
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        iWidgetsList.DrawDeferred();
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        }
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    // 6: cleanup
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    CleanupStack::PopAndDestroy( contentInfoArray );
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    // 7. check list empty condition
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    if ( iWidgetsList.WidgetDataCount() == 0 )
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        {
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        TResourceReader rr;
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        CEikonEnv::Static()->CreateResourceReaderLC(
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                rr, R_AVKON_LISTBOX_DEFAULT_EMPTY_TEXT );
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        TPtrC empty= rr.ReadTPtrC();
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        iWidgetsList.View()->SetListEmptyTextL( empty );
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        CleanupStack::PopAndDestroy();
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        iWidgetsList.DrawDeferred();
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        }
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    // 8. store list order if necessary
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    if ( loadError != KErrNone || widgetsAdded > 0 || widgetsRemoved > 0 )
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        {
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        iWidgetOrder->StoreL( iWidgetsList.WidgetDataArray() );
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        }
2
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   222
1
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    }
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// ---------------------------------------------------------
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// CWmWidgetLoaderAo::FindWidgetDataL
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// ---------------------------------------------------------
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//
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CWmWidgetData* CWmWidgetLoaderAo::FindWidgetData(
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        CHsContentInfo& aContentInfo )
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    {
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    CWmWidgetData* data = NULL;
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    for( TInt i=0; i<iWidgetsList.WidgetDataCount() && !data; ++i )
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        {
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        if ( iWidgetsList.WidgetData(i).EqualsTo( aContentInfo ) )
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            {
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            data = &iWidgetsList.WidgetData(i);
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            }
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        }
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    return data;
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    }
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// ---------------------------------------------------------
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// CWmWidgetLoaderAo::AddWidgetDataL
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// ---------------------------------------------------------
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//
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void CWmWidgetLoaderAo::AddWidgetDataL(
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        CHsContentInfo* aContentInfo )
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    {
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    CleanupStack::PushL( aContentInfo );
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    if ( !iWidgetRegistry )
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        {
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        iWidgetRegistry = new (ELeave) RWidgetRegistryClientSession();
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        User::LeaveIfError( iWidgetRegistry->Connect() );
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        }
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    CleanupStack::Pop( aContentInfo );
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    CWmWidgetData* widgetData = CWmWidgetData::NewLC( 
2
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            iWidgetsList.LogoSize(),
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            iWmPlugin.ResourceLoader(),
1
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            aContentInfo, iWidgetRegistry );
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    widgetData->SetPersistentWidgetOrder( iWidgetOrder );
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    widgetData->SetValid( ETrue );
2
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    iWidgetsList.AddWidgetDataL( widgetData, EFalse );
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    if ( iUninstallUid != KNullUid 
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            && iUninstallUid == widgetData->PublisherUid() )
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        {
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        widgetData->VisualizeUninstallL();
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        }
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1
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    CleanupStack::Pop( widgetData );
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    }
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// ---------------------------------------------------------------------------
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// CWmWidgetLoaderAo::Cleanup
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// ---------------------------------------------------------------------------
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//
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void CWmWidgetLoaderAo::Cleanup()
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    {
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    // disconnect widget registry
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    if ( iWidgetRegistry )
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        {
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        iWidgetRegistry->Disconnect();
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        iWidgetRegistry->Close();
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        delete iWidgetRegistry;
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        iWidgetRegistry = NULL;
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        }
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2
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    // delete widget order and references to it
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    for( TInt i=0; i<iWidgetsList.WidgetDataCount(); ++i )
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        {
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        iWidgetsList.WidgetData(i).SetPersistentWidgetOrder( NULL );
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        }
1
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    delete iWidgetOrder;
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    iWidgetOrder = NULL;
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    }
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// end of file
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