/*

* Copyright (c) 2007 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:  CFsTreeControl is a HUI control that handles UI events for

*                tree list.

*

*/

//////TOOLKIT INCLUDES

// <cmail> SF

#include "emailtrace.h"

#include <alf/alfevent.h>

// </cmail>

// <cmail> Needed for pointer events. "Base class modifications for using touch"

#include <alf/alfdisplay.h>

#include <alf/alfroster.h>

// </cmail>

//////PROJECT INCLUDES

//<cmail> removed __FS_ALFRED_SUPPORT flag

//#include <fsconfig.h>

//</cmail> removed __FS_ALFRED_SUPPORT flag

#include "fstreecontrol.h"

#include "fstreevisualizer.h"

// ======== MEMBER FUNCTIONS ========

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

// Two-phased constructor.

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

//

EXPORT_C CFsTreeControl* CFsTreeControl::NewL( CAlfEnv& aEnv, 

                                               CFsTree& aTree, 

                                               MFsTreeVisualizer& aVisualizer )

    {

    FUNC_LOG;

    CFsTreeControl* self = new( ELeave ) CFsTreeControl( //aEnv, 

                                                         aTree, 

                                                         aVisualizer );

    CleanupStack::PushL( self );

    self->ConstructL( aEnv );

    CleanupStack::Pop( self );

    return self;

    }

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

// C++ destructor.

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

//

CFsTreeControl::~CFsTreeControl() 

    {

    FUNC_LOG;

    }

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

// From class CHuiControl.

// Called when an input event is being offered to the control.

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

//

EXPORT_C TBool CFsTreeControl::OfferEventL(const TAlfEvent& aEvent)

  {

  FUNC_LOG;

  TBool eventHandled = EFalse;

  //Handle pointer events

  if ( aEvent.IsPointerEvent() )

      {

      if (aEvent.PointerEvent().iType == TPointerEvent::EButton1Down)

          {

          SetDragEvents(ETrue);

          }

      if (aEvent.PointerEvent().iType == TPointerEvent::EButton1Up)

          {

          SetDragEvents(EFalse);

          }

      eventHandled = iTreeVisualizer.HandlePointerEventL( aEvent );

      }

  else if( iFocused && aEvent.IsKeyEvent() && aEvent.Code() == EEventKey)

      {

      eventHandled = iTreeVisualizer.HandleKeyEventL( aEvent );

      }    

  return eventHandled;

  }

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

// Sets focus state of list component

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

void CFsTreeControl::SetFocused( const TBool aFocused )

    {

    FUNC_LOG;

    iFocused = aFocused;

    }

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

// Returns state of the focus

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

TBool CFsTreeControl::IsFocused() const

    {

    FUNC_LOG;

    return iFocused;

    }

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

//  

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

//

void CFsTreeControl::VisualPrepareDrawFailed(CAlfVisual& /*aVisual*/,

                                             TInt /*aErrorCode*/)

    {

    FUNC_LOG;

    }

// <cmail> "Base class modifications for using touch"

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

//  C++ constructor.

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

//

CFsTreeControl::CFsTreeControl( /*CAlfEnv& aEnv,*/ CFsTree& aTree, MFsTreeVisualizer& aVisualizer )

    : //CHuiControl( aEnv ),

      iTree(aTree),

      iTreeVisualizer( aVisualizer ),

	  iFocused( ETrue ),

	  iGetExtraPointerEvents(EFalse)

    {

    FUNC_LOG;

    }

// </cmail>

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

//  Second phase constructor.

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

//

void CFsTreeControl::ConstructL( CAlfEnv& aEnv )

    {

    FUNC_LOG;

    CAlfControl::ConstructL( aEnv );

    }

// <cmail>

void CFsTreeControl::NotifyControlVisibility( TBool  aIsVisible, CAlfDisplay& /*aDisplay*/ )

    {

    iTreeVisualizer.NotifyControlVisibilityChange(aIsVisible);

    if (!aIsVisible)

        {

        SetDragEvents(EFalse);

        }

    }

void CFsTreeControl::SetDragEvents(TBool aEnable)

    {

    //Add & remove extra touch events. 

    if (Display())

        {

        if(aEnable && !iGetExtraPointerEvents)

            {

            Display()->Roster().AddPointerEventObserver(EAlfPointerEventReportDrag, *this);

            Display()->Roster().AddPointerEventObserver(EAlfPointerEventReportLongTap, *this);

            Display()->Roster().AddPointerEventObserver(EAlfPointerEventReportUnhandled, *this);

            //aDisplay.Roster().DisableLongTapEventsWhenDragging(*this);

            iGetExtraPointerEvents = ETrue;

            }

        else if(!aEnable && iGetExtraPointerEvents )

            {

            Display()->Roster().RemovePointerEventObserver(EAlfPointerEventReportDrag, *this);

            Display()->Roster().RemovePointerEventObserver(EAlfPointerEventReportLongTap, *this);

            Display()->Roster().RemovePointerEventObserver(EAlfPointerEventReportUnhandled, *this);

            iGetExtraPointerEvents = EFalse;

            }

        }

    }

// </cmail>