/*

* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Widget Implementation

*

*/

//  Include Files  

#include <alf/alfenv.h>

#include <alf/alfwidgetenvextension.h>

// Class headers

#include "mulcoverflowwidget.h"    

// Mul Headers 

#include "imulmodelaccessor.h"

#include "mulassert.h"

#include "mullog.h" //for logs

#include <mul/imulsliderwidget.h>

// Local Headers

#include "mulbaseelement.h"

#include "mulcoverflowcontrol.h"

namespace Alf

    {

// ---------------------------------------------------------------------------

// MulCoverFlowWidget

// ---------------------------------------------------------------------------

//

MulCoverFlowWidget::MulCoverFlowWidget(  CAlfEnv& aEnv, 

                                   const char* aWidgetId, IAlfContainerWidget& aContainerWidget):AlfWidget(aWidgetId,aContainerWidget,aEnv)

    {

    mMulModelAccessor = NULL;

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::MulCoverFlowWidget");

    mWidgetPropertyFlag  = 0; //Initialization

    //Create default control 

    mCoverflowControl = new (EMM) MulCoverFlowControl( aEnv );

    setControl( mCoverflowControl,true );

    // create Base element

    mBaseElement = new (EMM) MulBaseElement( *mCoverflowControl, KBase );

    mTakesModelOwnership = false;

    }

// ---------------------------------------------------------------------------

// ~MulCoverFlowWidget

// ---------------------------------------------------------------------------

//

MulCoverFlowWidget::~MulCoverFlowWidget()

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::~MulCoverFlowWidget");

    // Control will be destroyed in the Widget deletion sequence. In that sequence 

	// Control's owner widget will be set to NULL. So,We cannot access the widget in

	// the Coverflow control's destructor. So,This will be the right place to remove the

	// model Observer.

	if( control() && model())

	    {

	    ((IMulModelAccessor*)model())->RemoveModelObserver(static_cast<MulCoverFlowControl*>( control()));

	    }

	if (mMulModelAccessor && mTakesModelOwnership)

		{

		delete mMulModelAccessor;

		}

	IAlfWidgetFactory& widgetFactory = AlfWidgetEnvExtension::widgetFactory(*(CAlfEnv::Static()));

	IAlfWidget* sliderWidget = widgetFactory.findWidget( KNameSliderWidget );

	if(control())    

	    {

		(static_cast<MulCoverFlowControl*>(control()))->DestroySlider();   

	    }   

    if(sliderWidget)

    	{

    	widgetFactory.destroyWidget(sliderWidget);

    	}      	

    }

// ---------------------------------------------------------------------------

// parent

// ---------------------------------------------------------------------------

//

IAlfContainerWidget* MulCoverFlowWidget::parent() const

	{

	return AlfWidget::parent (); //return container widget

	}

// ---------------------------------------------------------------------------

// control

// ---------------------------------------------------------------------------

//

CAlfWidgetControl* MulCoverFlowWidget::control() const

    {

    //Call the base class method

    return AlfWidget::control();

    }

// ---------------------------------------------------------------------------

// setControl

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::setControl( CAlfWidgetControl* aControl,bool aDeletePreviousControl  )

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::setControl");

    AlfWidget::setControl( aControl,aDeletePreviousControl );

    }

// ---------------------------------------------------------------------------

// model

// ---------------------------------------------------------------------------

//

IAlfModel* MulCoverFlowWidget::model()

    {

    return mMulModelAccessor;

    }

// ---------------------------------------------------------------------------

// setModel

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::setModel( IAlfModel* /*aModel*/ , bool /*aTakeOwnership*/ )

    {

    }

// ---------------------------------------------------------------------------

// widgetName

// ---------------------------------------------------------------------------

//

const char* MulCoverFlowWidget::widgetName() const

    {

    return AlfWidget::widgetName();

    }

// ---------------------------------------------------------------------------

// SetBackground

// ---------------------------------------------------------------------------

// 

void MulCoverFlowWidget::SetBackground(const TRgb& aColor)

	{

	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetBackground");

	mBaseElement->SetBackground( aColor );		

	}

// ---------------------------------------------------------------------------

// SetBackground

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetBackground(const TAknsItemID& aItemID) 

	{

	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetBackground");

	mBaseElement->SetBackground( aItemID );

	}

// ---------------------------------------------------------------------------

// SetFlags

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetFlags( unsigned int aAnyFlag )

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetFlags");

    mWidgetPropertyFlag |= aAnyFlag;

    // When the IMulMultiItemWidget::EMulWidgetFlagFastScroll flag is modified we should

    // set the enable holding flag to gesture helper to recieve the hold events.

    if(aAnyFlag == IMulMultiItemWidget::EMulWidgetFlagFastScroll)

	    {

	    mCoverflowControl->SetHoldingEnabled(); 	

	    }

	else if(aAnyFlag == IMulMultiItemWidget::EMulWidgetDoubleTap)

		{

		mCoverflowControl->SetDoubleTapEnabled(true); 	

		}

    }

// ---------------------------------------------------------------------------

// ClearFlags

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::ClearFlags( unsigned int aAnyFlag )

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::ClearFlags");

    mWidgetPropertyFlag &= ~aAnyFlag;

    if(aAnyFlag == IMulMultiItemWidget::EMulWidgetDoubleTap)

		{

		mCoverflowControl->SetDoubleTapEnabled(false); 	

		}

	else if(aAnyFlag == IMulMultiItemWidget::EMulWidgetFlagFastScroll)

	    {

	    mCoverflowControl->SetHoldingEnabled(); 	

	    }

    }

// ---------------------------------------------------------------------------

// IsFlagSet

// ---------------------------------------------------------------------------

//

bool MulCoverFlowWidget::IsFlagSet( TMulWidgetPropertiesFlag aAnyFlag ) const

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::IsFlagSet");

    return (mWidgetPropertyFlag & aAnyFlag);

    }

// ---------------------------------------------------------------------------

// GetFlags

// ---------------------------------------------------------------------------

//

unsigned int MulCoverFlowWidget::GetFlags() const

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::GetFlags");    

    return mWidgetPropertyFlag;

    }

// ---------------------------------------------------------------------------

// SetRect

// ---------------------------------------------------------------------------

//    

void MulCoverFlowWidget::SetRect( int /*aLeftMargin*/, int /*aTopmargin*/, int /*aHeight*/,

                                  int /*aWidth*/, int /*aTransitionTime*/ )

    {

    //@todo need to be removed once its removed from imulwidget.

    }

// ---------------------------------------------------------------------------

// ShowWidget

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::ShowWidget( bool aShow, int aTransitionTime ) 

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::ShowWidget");

    mBaseElement->ShowWidget( aShow,aTransitionTime );

    // Reset the flag . Event handling gets disabled once the flag is reset to false.

    mCoverflowControl->ResetShowWidgetFlag( aShow );

    }

// ---------------------------------------------------------------------------

// SetModel

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetModel( IMulModelAccessor* aAccessor, bool aFlag )

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetModel");

    //remove from observing change from old model

	if ( mMulModelAccessor != aAccessor )

        {

        if (mMulModelAccessor && control())

            {

            ((IMulModelAccessor*)model())->RemoveModelObserver(static_cast<MulCoverFlowControl*>( control()));

            }

        // Release the old model.

        if (mTakesModelOwnership)

            {

            delete mMulModelAccessor;

            }

        // Set the new model.

        mMulModelAccessor = aAccessor;

        mTakesModelOwnership=aFlag;        

        }

	else // just copy the ownership flag 

        { 

        if (mMulModelAccessor != NULL)

            {

            mTakesModelOwnership=aFlag;

            }

        }

    IMulSliderWidget* sliderWidget = static_cast<IMulSliderWidget*>(mCoverflowControl->GetSliderWidget());

    // cancel all previous commands (like marquee and bounce)

	mCoverflowControl->Env().CancelCustomCommands(mCoverflowControl);

    if( aAccessor )

    	{

    	mMulModelAccessor = aAccessor;

        MUL_LOG_INFO("MUL::MulCoverFlowWidget::SetModel()::SetVisibleWindow "); 

        aAccessor->AddModelObserver(mCoverflowControl);

		// Notify the control regarding model change.

		mCoverflowControl->ModelChanged(aAccessor);

        if( aAccessor->CurrentItemCount() <= 0 )

        	{

        	if(sliderWidget)

	    		{

	    		mBaseElement->ShowSlider(false);	

	    		}		

        	}

    	}

    else // For Null Model case

    	{

    	mCoverflowControl->RecycleVisuals();

    	mBaseElement->ShowEmptyText( true );

    	if( sliderWidget )

    		{

    		mBaseElement->ShowSlider(false);		

    		}

    	}

    }

// ---------------------------------------------------------------------------

// GetIconSize

// ---------------------------------------------------------------------------

//	

void MulCoverFlowWidget::GetIconSize( mulwidget::TLogicalTemplate aTemplateId, 

		    mulvisualitem::TVisualAttribute aAttribute, int& aHeight, int& aWidth)

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::GetIconSize");

    if((aAttribute == mulvisualitem::KMulIcon1) || 

            (aAttribute == mulvisualitem::KMulIndicator2))

        {

        mBaseElement->GetIconSize(aTemplateId,aAttribute,aHeight,aWidth);

        }

    else

        {

        __MUL_ASSERT( false,KInvalidArgument);

        }

    }

// ---------------------------------------------------------------------------

// GetIconSize

// ---------------------------------------------------------------------------

//	

void MulCoverFlowWidget::GetIconSize(mulvisualitem::TVisualAttribute aAttribute, 

        int& aHeight, int& aWidth)

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::GetIconSize");

	__MUL_ASSERT( mMulModelAccessor != 0,KTemplateNotFound);

	if((aAttribute == mulvisualitem::KMulIcon1) || 

	        (aAttribute == mulvisualitem::KMulIndicator2))

	    {

	    mBaseElement->GetIconSize(mMulModelAccessor->Template(),aAttribute,

	            aHeight,aWidth);

	    }

	else

	    {

	    __MUL_ASSERT( false,KInvalidArgument);

	    }

    }

 // ---------------------------------------------------------------------------

 // makeInterface

 // ---------------------------------------------------------------------------

 //

IAlfInterfaceBase* MulCoverFlowWidget::makeInterface( const IfId& /*aType*/ )

    {

    return static_cast<IMulCoverFlowWidget*>( this );

    }

// ---------------------------------------------------------------------------

// setChildFocus

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::setChildFocus( bool /*aFocus*/ )

    {

	// pure virtual function of base Class.

	// not usefull for this widget

    }

void MulCoverFlowWidget::setPresentation(const char* /*aFilePath*/)

	{

	// pure virtual function of base Class.

	// not usefull for this widget

	}

// ---------------------------------------------------------------------------

// AddEventHandler

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::AddEventHandler( IAlfWidgetEventHandler& aObserver )

	{

	control()->addEventHandler( &aObserver );

	}

// ---------------------------------------------------------------------------

// RemoveEventHandler

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::RemoveEventHandler( IAlfWidgetEventHandler& aObserver )

	{

	control()->removeEventHandler( aObserver );

	}

// ---------------------------------------------------------------------------

// ContainerLayout 

// ---------------------------------------------------------------------------

//

const CAlfLayout& MulCoverFlowWidget::ContainerLayout()

	{

	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::ContainerLayout");

	CAlfLayout* layout=(CAlfLayout*)mBaseElement->findVisual(0);

	return *layout;

	} 	

// ---------------------------------------------------------------------------

// SetEmptyText

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetEmptyText( const UString& aDefaultText)

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetEmptyText");

    mBaseElement->SetEmptyText(aDefaultText);

    }

// ---------------------------------------------------------------------------

// SetMarkMode 

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetMarkMode(bool /*aFlag*/)

	{

    // Marking mode is not supported by coverflow widget.

	}

// ---------------------------------------------------------------------------

// IsMarkMode 

// ---------------------------------------------------------------------------

//		

bool MulCoverFlowWidget::IsMarkMode()const 

	{

	// Marking mode is not supported by coverflow widget.

	return false;

	}

// ---------------------------------------------------------------------------

// SetReorderMode 

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetReorderMode(TMulReOrderMode /*aReorderMode*/)

	{

	// reorder mode is not supported by coverflow widget.	

	}

// ---------------------------------------------------------------------------

// IsReorderMode 

// ---------------------------------------------------------------------------

//		

bool MulCoverFlowWidget::IsReorderModeOn() const

	{

	// reorder mode is not supported by coverflow widget.	

	return false;

	}

// ---------------------------------------------------------------------------

// SetOverlay 

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetOverlay(TMulAttributeDataType /*aType*/, const UString& /*aAttribute*/, 

	const UString& /*aFormat*/)

	{

	// No implementation .

	}

// ---------------------------------------------------------------------------

// SetAnimationTime 

// ---------------------------------------------------------------------------

//	

void MulCoverFlowWidget::SetAnimationTime( TMulVisualEffect aVisualEffect, int aTransitionTime ) 

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetAnimationTime");

    // EHighlightTransition is used to set coverflow step scroll animation time.

     if( aVisualEffect == EHighlightTransition )

        {

        mBaseElement->SetScrollAnimationTime(aTransitionTime);

        }

    }

// ---------------------------------------------------------------------------

// SetUIOnOFF

// ---------------------------------------------------------------------------

//    

void MulCoverFlowWidget::SetUIMode(bool UIOn, int aTransition )

    {

    MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetUIMode");

    mBaseElement->UIOnOffMode( UIOn,aTransition );    

    }

// ---------------------------------------------------------------------------

// SetVisualColor 

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetVisualColor( TMulVisualType aVisualType , const TRgb& aColor )

	{

	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetVisualColor");

    switch(aVisualType)

        {

        case EItemBackgroundBrush:

            {

            mBaseElement->SetItemBrush(aColor); 

            }

        break;

        case ECoverflowCounterVisual:

            {

            mBaseElement->SetTextColor(ECounterVisual,aColor);    

            }

        break;

        case ETextVisual:

            {

            mBaseElement->SetTextColor(ETilteDetailTextVisual,aColor);    

            }

        break;

        default:

        break;  	        

        }

	}

// ---------------------------------------------------------------------------

// SetDefaultImage 

// ---------------------------------------------------------------------------

//

void MulCoverFlowWidget::SetDefaultImage(int aTextureId)

	{

	MUL_LOG_ENTRY_EXIT("aakash::MulCoverFlowWidget::SetDefaultImage");

	mCoverflowControl->SetDefaultImage(aTextureId);