/*
* 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:
*  Version     : %version: MM_76 % << Don't touch! Updated by Synergy at check-out.
*  Version     : %version: MM_76 % << Don't touch! Updated by Synergy at check-out.
*
*/


#include "mmgridcontainer.h"
#include "mmgridmodel.h"
#include "mmlistboxmodel.h"
#include "mmmarqueeadapter.h"
#include <AknsLayeredBackgroundControlContext.h>
#include <AknsListBoxBackgroundControlContext.h>
#include <layoutmetadata.cdl.h>
#include "hnsuitemodel.h"
#include "mmgrid.h"
#include "mmwidgetsconstants.h"
#include "hnglobals.h"
#include "mmpostevaluationprocessor.h"
#include "mmlistboxitemdrawer.h"
#include "mmdraweranimator.h"

// -----------------------------------------------------------------------------
// CMmGridContainer::NewLC()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CMmGridContainer* CMmGridContainer::NewLC( const TRect& aRect,
        MObjectProvider* aObjectProvider, CMmTemplateLibrary* aLibrary )
    {
    CMmGridContainer* self = new( ELeave ) CMmGridContainer();
    CleanupStack::PushL( self );
    self->ConstructL( aRect, aObjectProvider, aLibrary );
    return self;
    }

// -----------------------------------------------------------------------------
// CMmGridContainer::NewL()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CMmGridContainer* CMmGridContainer::NewL( const TRect& aRect,
        MObjectProvider* aObjectProvider, CMmTemplateLibrary* aLibrary )
    {
    CMmGridContainer* self = NewLC( aRect, aObjectProvider, aLibrary);
    CleanupStack::Pop( self );
    return self;
    }

// -----------------------------------------------------------------------------
// CMmGridContainer::CMmGridContainer()
// C++ default constructor
// -----------------------------------------------------------------------------
//
CMmGridContainer::CMmGridContainer()
    {
    }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
CAknGrid* CMmGridContainer::Grid()
    {
    return iGrid;
    }
// -----------------------------------------------------------------------------
// CMmGridContainer::~CMmGridContainer()
// Destructor
// -----------------------------------------------------------------------------
//
CMmGridContainer::~CMmGridContainer()
    {
    delete iGrid;
    }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
THnSuiteWidgetType CMmGridContainer::WidgetType()
  {
  return EGridWidget;
  }
// -----------------------------------------------------------------------------
// CMmGridContainer::ConstructL()
// 2nd phase constructor
// -----------------------------------------------------------------------------
//
void CMmGridContainer::ConstructL( const TRect& aRect, MObjectProvider* aObjectProvider,
        CMmTemplateLibrary* aTemplateLibrary )
    {
    CMmWidgetContainer::ConstructL();

    SetMopParent( aObjectProvider );
    CreateWindowL(); // Creates window.
    iWidget = CreateGridL(aTemplateLibrary);
    iWidget->SetListBoxObserver( this );
    SetRect( aRect ); // Sets rectangle of frame.
    ActivateL(); // Activates window. ( Ready to draw )
    SetupDrawer();
    SetHighlightVisibilityL( !AknLayoutUtils::PenEnabled() );
    iPostProcessor = CMmPostEvaluationProcessor::NewL( *iDrawer );
    }

// -----------------------------------------------------------------------------
// CMmGridContainer::CreateGridL()
// Constructs listbox from resource, creates scroll bar and sets empty
// list background text.
// -----------------------------------------------------------------------------
//
CMmGrid* CMmGridContainer::CreateGridL( CMmTemplateLibrary* aTemplateLibrary )
    {
    iGrid = CMmGrid::NewL( this,
        EAknListBoxSelectionList | EAknListBoxLoopScrolling | EAknListBoxDisableHighlight , aTemplateLibrary );
    iGrid->SetContainerWindowL( *this );
    iGrid->CreateScrollBarFrameL( ETrue );
    iGrid->SetPrimaryScrollingType(
          CAknGridView::EScrollFollowsItemsAndLoops );
    iGrid->SetSecondaryScrollingType(
          CAknGridView::EScrollFollowsGrid );
    iGrid->ScrollBarFrame()->SetScrollBarVisibilityL(
        CEikScrollBarFrame::EAuto, CEikScrollBarFrame::EAuto );
    iGrid->ScrollBarFrame()->DrawBackground( EFalse, EFalse );
    return iGrid;
    }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
void CMmGridContainer::SizeChanged()
    {
    CMmWidgetContainer::SizeChanged();
    if ( iGrid )
      {
//    	iGrid->SetRect( Rect() );
        iGrid->SetupLayout();
        }
    }
// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
void CMmGridContainer::SetEditModeL( TBool aIsEditMode )
    {
  if (aIsEditMode && !AknLayoutUtils::PenEnabled() )
    {
    iGrid->SetPrimaryScrollingType(
        CAknGridView::EScrollStops );
    iGrid->SetSecondaryScrollingType(
        CAknGridView::EScrollStops );
        }
    else
      {
      iGrid->SetPrimaryScrollingType(
                CAknGridView::EScrollFollowsItemsAndLoops );
      iGrid->SetSecondaryScrollingType(
                CAknGridView::EScrollFollowsGrid );

      }

  // In EditMode we allow Avkon to redraw scrollbar background
  // to prevent scrollbar flicking.
  // When edit mode is disabled, this redrawing causes performance problems
  // (and disabling it does not produce erroneous side-effects).
  if( aIsEditMode )
    {
      iGrid->ScrollBarFrame()->DrawBackground( EFalse, ETrue );
    }
  else
    {
      iGrid->ScrollBarFrame()->DrawBackground( EFalse, EFalse );
    }

    CMmWidgetContainer::SetEditModeL( aIsEditMode );
    }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
EXPORT_C void CMmGridContainer::SetEmptyTextL(const TDesC& aText)
    {
    iGrid->SetEmptyGridTextL( aText );
    }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
EXPORT_C void CMmGridContainer::SetDefaultHighlightL(  TBool aRedraw )
    {
    TInt defaultHighlight( 0 );
    SetManualHighlightL( defaultHighlight + DefaultHighlightOffset(), aRedraw );
    }

// -----------------------------------------------------------------------------
//
//
// -----------------------------------------------------------------------------
//
TInt CMmGridContainer::DefaultHighlightOffset()
  {
  TInt topVisibleItemIndex = iGrid->View()->TopItemIndex();
  TInt hiddenPixels = -iGrid->View()->ItemOffsetInPixels();

  if ( iGrid->View()->ItemIsPartiallyVisible( topVisibleItemIndex )
    && hiddenPixels > iGrid->View()->ItemSize().iHeight / 2 )
    {
    topVisibleItemIndex += ColumnsInCurrentView();
    }

  return topVisibleItemIndex;
  }

// -----------------------------------------------------------------------------
//
//
// -----------------------------------------------------------------------------
//
CMmListBoxModel* CMmGridContainer::GetMmModel()
    {
    return iGrid->MmModel()->MmListBoxModel();
    }

// -----------------------------------------------------------------------------
//
//
// -----------------------------------------------------------------------------
//
void CMmGridContainer::SetItemDrawerAndViewBgContext(
    CAknsBasicBackgroundControlContext * aBgContext )
  {
  iGrid->SetItemDrawerAndViewBgContext (aBgContext);
  }

// -----------------------------------------------------------------------------
//
//
// -----------------------------------------------------------------------------
//
void CMmGridContainer::SetupWidgetLayoutL()
  {
  User::LeaveIfNull( iGrid );
  iGrid->SetupLayout();
  }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
void CMmGridContainer::SetSuiteModelL( CHnSuiteModel* aModel )
    {
    CMmWidgetContainer::SetSuiteModelL( aModel );
    }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
void CMmGridContainer::SetHighlightVisibilityL( TBool aVisible )
    {
    CMmWidgetContainer::SetHighlightVisibilityL( aVisible );
    }

// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
void CMmGridContainer::HandleItemAdditionL()
  {
  iGrid->HandleItemAdditionL();
  }


// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
void CMmGridContainer::HandleItemRemovalL()
  {

  GetMmModel()->HandleSuiteEventL( ESuiteItemsRemoved, GetMmModel()->GetSuiteModel() );
  ValidateWidgetCurrentItemIndex();
  iDrawer->RemoveFloatingItems();
  if( IsEditMode() )
    {
    iDrawer->GetAnimator()->SetNextRedrawToWholeScreen();
    }

  CacheWidgetPosition();
  iGrid->View()->SetDisableRedraw( ETrue ); //prevention scroll view
  iGrid->HandleItemRemovalL();
  iGrid->View()->SetDisableRedraw( EFalse );
  RestoreWidgetPosition();
  CacheWidgetPosition();

  if ( iCurrentHighlight != iGrid->CurrentItemIndex() )
    {
    iCurrentHighlight = iGrid->CurrentItemIndex();
    if( !iCurrentHighlight && !iGrid->Model()->NumberOfItems() )
      {
      iCurrentHighlight = KErrNotFound ;
      }
    CHnSuiteModel* suiteModel = GetSuiteModelL();
    if ( suiteModel )
        {
        suiteModel->SetSuiteHighlightL( iCurrentHighlight );
        }
    }
  static_cast<CMmListBoxItemDrawer*>( iGrid->ItemDrawer() )->TrimCacheSize(
            GetMmModel()->NumberOfItems() );
  }

// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
TInt CMmGridContainer::ColumnsInCurrentView()
  {
  CAknGridView* view ( (CAknGridView*) iGrid->View() );
  return view->NumberOfColsInView();
  }
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
TInt CMmGridContainer::RowsInCurrentView()
    {
    CAknGridView* view ( (CAknGridView*) iGrid->View() );
    return view->NumberOfRowsInView();
    }

// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
void CMmGridContainer::DrawView()
    {
    iGrid->DrawView();
    }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
void CMmGridContainer::SetVerticalItemOffset( TInt aOffset )
  {
  iGrid->SetVerticalItemOffset( aOffset );
  }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
TInt CMmGridContainer::VerticalItemOffset() const
  {
  return iGrid->VerticalItemOffset();
  }

//----------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
void CMmGridContainer::UpdateViewScrollBarThumbs()
  {
  iGrid->UpdateScrollBarThumbs();
  }

// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
//
TBool CMmGridContainer::ItemIsVisible( TInt aItemIndex ) const
    {
    CListBoxView* v = iGrid->View();
    TRect itemRect( v->ItemPos( aItemIndex ), v->ItemSize( aItemIndex ) );
    TRect viewRect = v->ViewRect();
    TBool isVisible = EFalse;
    if ( itemRect.Intersects( viewRect ) )
        {
        TRect intersection = itemRect;
        intersection.Intersection( viewRect );
        isVisible = intersection.Height() > 1 && intersection.Width() > 1;
        }
    return isVisible;
    }

// End of File