shoppinglistappview.cpp

Symbian 的购物程序 shoppinglist-vc

/*  Copyright (c) 2004, Nokia. All rights reserved */

// INCLUDE FILES
#include <coemain.h>

#include "ShoppingListAppView.h"
#include "ShoppingListDocument.h"
#include "ShoppingItem.h"
#include "ShoppingList.pan"

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

// ---------------------------------------------------------
// CShoppingListAppView::NewL()
// ---------------------------------------------------------
//
CShoppingListAppView* CShoppingListAppView::NewL( const TRect& aRect, 
                                                 CShoppingListDocument* aDocument )
    {
    CShoppingListAppView* self = CShoppingListAppView::NewLC( aRect, aDocument );
    CleanupStack::Pop( self );
    return self;
    }

// ---------------------------------------------------------
// CShoppingListAppView::NewLC()
// ---------------------------------------------------------
//
CShoppingListAppView* CShoppingListAppView::NewLC( const TRect& aRect, 
                                                  CShoppingListDocument* aDocument )
    {
    CShoppingListAppView* self = new ( ELeave ) CShoppingListAppView( aDocument );
    CleanupStack::PushL( self );
    self->ConstructL( aRect );
    return self;
    }

// ---------------------------------------------------------
// CShoppingListAppView::CShoppingListAppView()
// Constructor
// ---------------------------------------------------------
//
CShoppingListAppView::CShoppingListAppView( CShoppingListDocument* aDocument ) 
: iDocument( aDocument )
    {
    // No implementation needed
    }

// ---------------------------------------------------------
// CShoppingListAppView::~CShoppingListAppView()
// Destructor
// ---------------------------------------------------------
//
CShoppingListAppView::~CShoppingListAppView()
    {
    delete iListBox;
    iListBox = NULL;

    if( iListBoxRows )
        {
        iListBoxRows->Reset();
        }
    delete iListBoxRows;
    iListBoxRows= NULL;
    }

// ---------------------------------------------------------
// CShoppingListAppView::ConstructL()
// 2nd phase constructor.
// ---------------------------------------------------------
//
void CShoppingListAppView::ConstructL( const TRect& aRect )
    {
    CreateWindowL();

    SetRect( aRect );
    
    iListBox = new ( ELeave ) CAknSingleStyleListBox;
    iListBox->ConstructL( this, 0 );
    iListBox->SetContainerWindowL( *this );
    iListBox->SetRect( aRect.Size() );

    iListBoxRows = new ( ELeave ) CDesCArrayFlat( KGranularityOfArray );
    iListBox->Model()->SetItemTextArray( iListBoxRows );
    iListBox->Model()->SetOwnershipType( ELbmDoesNotOwnItemArray );

    iListBox->ActivateL();
    iListBox->CreateScrollBarFrameL( ETrue );
    iListBox->ScrollBarFrame()
          ->SetScrollBarVisibilityL( CEikScrollBarFrame::EOn, CEikScrollBarFrame::EAuto );

    ActivateL();
    MakeVisible( ETrue );
    }

// ---------------------------------------------------------
// CShoppingListAppView::UpdateL()
// ---------------------------------------------------------
//
void CShoppingListAppView::UpdateL()
    {

    iListBoxRows->Reset();
    if( iDocument->ItemCount() > 0 )
        {
        for( TInt i = 0; i < iDocument->ItemCount(); ++i )
            {
            CShoppingItem* item = iDocument->Item( i );
            
            HBufC* row;
            if( item->Flags() & CShoppingItem::EMarked ) 
                {
                row = PrependLC( KMark(), *( item->Name() ) );
                }
            else
                {
                row = PrependLC( KTab(), *( item->Name() ) );
                }
            iListBoxRows->AppendL( row->Des() );
            CleanupStack::PopAndDestroy( row );
            }
                
        iListBox->HandleItemAdditionL();
        }
    else
        {
        iListBox->HandleItemRemovalL();
        }
    }

// ---------------------------------------------------------
// CShoppingListAppView::PrependLC()
// ---------------------------------------------------------
//
HBufC* CShoppingListAppView::PrependLC( const TDesC& aString1, TDesC& aString2 )
    {
    HBufC* result = HBufC::NewMaxLC( aString1.Length() + aString2.Length() );
    TPtr resultDes = result->Des();
    resultDes = aString1;
    resultDes.Append( aString2 );
    return result;
    }

// ---------------------------------------------------------
// CShoppingListAppView::CurrentItemIndex()
// ---------------------------------------------------------
//
TInt CShoppingListAppView::CurrentItemIndex() const
    {
    return iListBox->CurrentItemIndex();
    }

// ---------------------------------------------------------
// CShoppingListAppView::SetCurrentItemIndex()
// ---------------------------------------------------------
//
void CShoppingListAppView::SetCurrentItemIndex( TInt aIndex )
    {
    iListBox->SetCurrentItemIndex( aIndex );
    }

// ---------------------------------------------------------
// CShoppingListAppView::Draw()
// ---------------------------------------------------------
//
void CShoppingListAppView::Draw( const TRect& /*aRect*/ ) const
    {
    CWindowGc& gc = SystemGc();
    TRect rect = Rect();
    gc.Clear( rect );
    }

// ---------------------------------------------------------
// CShoppingListAppView::CountComponentControls()
// ---------------------------------------------------------
//
TInt CShoppingListAppView::CountComponentControls() const
    {
    return 1; // Only have one Component
    }

// ---------------------------------------------------------
// CShoppingListAppView::ComponentControl()
// ---------------------------------------------------------
//
CCoeControl* CShoppingListAppView::ComponentControl( TInt aIndex ) const
    {
    if( aIndex > 0 )
        {
        Panic( EShoppingListView );
        }
    return iListBox;
    }

// ---------------------------------------------------------
// CShoppingListAppView::OfferKeyEventL()
// ---------------------------------------------------------
//
TKeyResponse CShoppingListAppView::OfferKeyEventL( const TKeyEvent& aKeyEvent, 
                                                  TEventCode aType )
    {
    return iListBox->OfferKeyEventL( aKeyEvent, aType );
    }

// End of File