mulwidgets/alfscrollbarwidget/src/alfscrollbarwidget.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:56:02 +0200
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/*
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* Copyright (c) 2007, 2008 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:  Implementation for scrollbar widget.
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 *
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*/
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// Alfred Client includes
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#include <alf/alfenv.h>
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// Widget Model includes
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#include "alf/alfelement.h"
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#include <alf/alfexception.h>
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// Widget Includes
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#include <alf/ialfscrollbardefaultbaseelement.h>
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#include <alf/alfscrollbarproductids.h>
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// Internal includes
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#include "alfscrollbardefaultbaseelement.h"
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#include "alfscrollbarwidget.h"
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#include "alfscrollbarmodel.h"
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#include "alfscrollbarcontrol.h"
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#include <alf/alfwidgetenvextension.h>
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using namespace alfscrollbarwidget;
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using Alf::CommonWidgetEvent;
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namespace Alf
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    {
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// ---------------------------------------------------------------------------
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//  Creator Method.
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// ---------------------------------------------------------------------------
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//        
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AlfScrollBarWidget* AlfScrollBarWidget :: create(
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    CAlfEnv& aEnv, 
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    IAlfContainerWidget& aContainer,
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    const char* aWidgetId, 
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    DuiNode *aNode, 
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    const char *aFilePath, 
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    AlfCustomInitDataBase* aCustomData)
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    {
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    return (new( EMM ) AlfScrollBarWidget(aEnv, 
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        aContainer, aWidgetId, aNode, aFilePath, aCustomData));
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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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AlfScrollBarWidget::~AlfScrollBarWidget()
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    {
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    if(mScrollModel)
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        {
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        delete mScrollModel;
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        }
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    else 
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        {
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        }
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    }
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// ---------------------------------------------------------------------------
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// From class IAlfWidget.
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// Getter for the parent container. The ownership not passed.
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// ---------------------------------------------------------------------------
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//
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IAlfContainerWidget* AlfScrollBarWidget::parent() const
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    {
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    return mWidget->parent();
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    }
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// From class MAlfInterfaceBase.
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// ---------------------------------------------------------------------------
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// Getter for interfaces provided by the scrollbar widget.
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// ---------------------------------------------------------------------------
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//
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IAlfInterfaceBase* AlfScrollBarWidget :: makeInterface(const IfId& aType)
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    {
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    UString param ( aType.mImplementationId );
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    if (param == IAlfScrollBarWidget::type().mImplementationId)
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        {
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        return static_cast<IAlfScrollBarWidget*>(this);
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        }
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    else if (param == IAlfWidget::type().mImplementationId)
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        {
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        return static_cast<IAlfWidget*>(this);
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        }
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    else
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        {
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        //do nothing
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        }
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    return mWidget->makeInterface(aType);
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    }
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// From class IAlfWidget.
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// ---------------------------------------------------------------------------
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// Getter for the control. The ownership is not passed.
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// ---------------------------------------------------------------------------
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//
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CAlfWidgetControl* AlfScrollBarWidget :: control() const
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    {
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    return mWidget->control();
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    }
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// ---------------------------------------------------------------------------
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// Setter for the control. The control is owned by the Alfred environment.
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// ---------------------------------------------------------------------------
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//    
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void AlfScrollBarWidget :: setControl( 
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    CAlfWidgetControl* aControl, bool /*aDeletePreviousControl*/ )
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    {
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    mScrollControl = aControl;
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    mWidget->setControl(aControl);
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    }
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// ---------------------------------------------------------------------------
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// Getter for the model. The ownership is not passed.
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// ---------------------------------------------------------------------------
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//
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IAlfModel* AlfScrollBarWidget :: model()
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    {    
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    return mScrollModel;
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    }
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// ---------------------------------------------------------------------------
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// Setter for the model. Ownership is passed and the old model is released.
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// ---------------------------------------------------------------------------
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//
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void AlfScrollBarWidget :: setModel( IAlfModel* aModel, bool /*aTakeOwnerShip*/)
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    {
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    IAlfElement* baseelement = control()->findElement ("BaseElement");
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    if(baseelement)
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    	{
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    IAlfScrollBarBaseElementInternal* elementInternal = 
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            static_cast<IAlfScrollBarBaseElementInternal*> (
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    baseelement->makeInterface(
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                    IAlfScrollBarBaseElementInternal::type()));
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    if(aModel==NULL)
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        {
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        if(elementInternal)
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        	{
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        	elementInternal->destroyVisualization();
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        	}
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        delete mScrollModel;
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        mScrollModel = NULL;
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        }
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    else
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        {
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        if(mScrollModel)
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            {
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            delete mScrollModel;
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            mScrollModel = NULL;
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            mScrollModel = static_cast<IAlfScrollBarModel*>( aModel->makeInterface(
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                IAlfScrollBarModel::type()));
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            AlfScrollBarModel* scrollBarModel = (AlfScrollBarModel*)mScrollModel;
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            // Store the widget pointer in model
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            scrollBarModel->storeWidget(this);
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            if(mScrollModel && elementInternal)
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                {
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                elementInternal->initializeScrollModel();
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                elementInternal->updateVisualization();
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                }
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            }
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        else
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            {
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            mScrollModel =static_cast<IAlfScrollBarModel*>( aModel->makeInterface(
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                IAlfScrollBarModel::type()));
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            AlfScrollBarModel* scrollBarModel = (AlfScrollBarModel*)mScrollModel;
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            scrollBarModel->storeWidget(this);
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            if(mScrollModel && elementInternal)
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                {
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                elementInternal->createVisualization();
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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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// Get the name of the widget instance.
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// ---------------------------------------------------------------------------
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//
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const char* AlfScrollBarWidget :: widgetName() const
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    {
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    return mWidget->widgetName();
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    } 
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// ---------------------------------------------------------------------------
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// Sets/Releases the Focus from child widget of container.
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// ---------------------------------------------------------------------------
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//
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void AlfScrollBarWidget :: setChildFocus(bool /*aFocus*/)
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    {
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    }
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//---------------------------------------------------------------------------
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// Creates the presentation for the widget from XML. Destroys any existing
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// presentation.
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//---------------------------------------------------------------------------
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//    
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void AlfScrollBarWidget :: setPresentation(const char* /*aFilePath*/)
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    {
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    } 
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// ---------------------------------------------------------------------------
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//  C++ default constructor.
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// ---------------------------------------------------------------------------
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//
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AlfScrollBarWidget :: AlfScrollBarWidget(
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    CAlfEnv& aEnv, IAlfContainerWidget& aContainer,
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    const char* aWidgetId, DuiNode * /*aNode*/, 
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    const char * /*aFilePath*/,
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    AlfCustomInitDataBase* /*aCustomData*/)
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    { 
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    mScrollModel = NULL;
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    mWidget.reset(new(EMM) AlfWidget(aWidgetId,aContainer,aEnv));
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    // Default Imperative Construction
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    constructDefault(aEnv);
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    }
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// ---------------------------------------------------------------------------
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// Constructs default Visualization for widget.
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// ---------------------------------------------------------------------------
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//
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void AlfScrollBarWidget :: constructDefault(CAlfEnv& aEnv)
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    {
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    const char* mBaseElementLoadId=KScrollBarDefaultBaseElement; 
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    // Create Control
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    CAlfWidgetControl* ctrl = constructDefaultControl(aEnv);
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    setControl(ctrl);
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    // Create Element
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    IAlfWidgetFactory& widgetFactory = AlfWidgetEnvExtension::widgetFactory(control()->Env());
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    widgetFactory.createElement<IAlfElement>(mBaseElementLoadId, 
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					         	             baseElementName(),
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					         	             *control());    
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    }
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// ---------------------------------------------------------------------------
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//  Construct and returns Scrollbar Control.
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// ---------------------------------------------------------------------------
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//
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CAlfWidgetControl *AlfScrollBarWidget :: constructDefaultControl(CAlfEnv& aEnv)
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    {
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    return(new(EMM) AlfScrollBarControl(aEnv) );
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    }    
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// ---------------------------------------------------------------------------
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//  Enables tactile feedback based on the flag state
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// ---------------------------------------------------------------------------
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//
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void AlfScrollBarWidget ::enableTactile(bool aFlag)
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	{
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	AlfScrollBarControl* scrollControl = (AlfScrollBarControl*)control();
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	scrollControl->EnableTactileFeedback(aFlag);
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	}
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// ---------------------------------------------------------------------------
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//  Getter for tactile feedback state
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// ---------------------------------------------------------------------------
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//               
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bool AlfScrollBarWidget ::IsTactileEnabled()
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	{
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	AlfScrollBarControl* scrollControl = (AlfScrollBarControl*)control();
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	return scrollControl->IsTactileFeedbackEnabled();
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	}  
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    }//End of Alf
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