listexamappview.cpp

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/*
 ============================================================================
 Name		: ListExamAppView.cpp
 Author	  : hou maoqing
 Copyright   : Copyright (c) Hou maoqing 2008
 Description : Application view implementation
 ============================================================================
 */

// INCLUDE FILES
#include <coemain.h>
#include <badesca.h>  // CDesCArray
#include <coecntrl.h> // CCoeControl
#include <eiklbo.h>   // MEikListBoxObserver
#include <akniconarray.h> // CAknIcon
#include <aknlists.h> // CAknSingleStyleListBox
#include <barsread.h> // TResource Reader
#include <e32def.h> // STATIC_CAST
#include <eikclbd.h> // CColumnListBoxData
#include <ListExamIcon.mbg>
#include <ListExam_0xE82FFBEE.rsg>
#include "ListExamAppView.h"

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

// -----------------------------------------------------------------------------
// CListExamAppView::NewL()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CListExamAppView* CListExamAppView::NewL(const TRect& aRect)
	{
	CListExamAppView* self = CListExamAppView::NewLC(aRect);
	CleanupStack::Pop(self);
	return self;
	}

// -----------------------------------------------------------------------------
// CListExamAppView::NewLC()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CListExamAppView* CListExamAppView::NewLC(const TRect& aRect)
	{
	CListExamAppView* self = new ( ELeave ) CListExamAppView;
	CleanupStack::PushL(self);
	self->ConstructL(aRect);
	return self;
	}

// -----------------------------------------------------------------------------
// CListExamAppView::ConstructL()
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void CListExamAppView::ConstructL(const TRect& aRect)
	{
	// Create a window for this application view
	CreateWindowL();
	
	CreateListL();
	LoadListIconsL();
	LoadListItemsL();

	// Set the windows size
	SetRect(aRect);

	// Activate the window, which makes it ready to be drawn
	ActivateL();
	}

// -----------------------------------------------------------------------------
// CListExamAppView::CListExamAppView()
// C++ default constructor can NOT contain any code, that might leave.
// -----------------------------------------------------------------------------
//
CListExamAppView::CListExamAppView()
	{
	// No implementation required
	}

// -----------------------------------------------------------------------------
// CListExamAppView::~CListExamAppView()
// Destructor.
// -----------------------------------------------------------------------------
//
CListExamAppView::~CListExamAppView()
	{
	delete iMainItemsListBox;
	}

// -----------------------------------------------------------------------------
// CListExamAppView::Draw()
// Draws the display.
// -----------------------------------------------------------------------------
//
void CListExamAppView::Draw(const TRect& /*aRect*/) const
	{
	// Get the standard graphics context
	CWindowGc& gc = SystemGc();

	// Gets the control's extent
	TRect drawRect(Rect());

	// Clears the screen
	gc.Clear(drawRect);

	}

// -----------------------------------------------------------------------------
// CListExamAppView::SizeChanged()
// Called by framework when the view size is changed.
// -----------------------------------------------------------------------------
//
void CListExamAppView::SizeChanged()
	{
	TRect rect=Rect();
	iMainItemsListBox->SetExtent (rect.iTl, rect.Size());
	}

TInt CListExamAppView::CountComponentControls() const
    {
    return 1; // return nbr of controls inside this container
    }

CCoeControl* CListExamAppView::ComponentControl( TInt aIndex ) const
    {
    switch (aIndex)
		{
		case 0:
			return iMainItemsListBox;
		default:
			return NULL;
		}
    }

TKeyResponse CListExamAppView::OfferKeyEventL( 
            const TKeyEvent& aKeyEvent, TEventCode aType )
    {
    if (iMainItemsListBox)
    		return iMainItemsListBox->OfferKeyEventL (aKeyEvent, aType);
	else
		return EKeyWasNotConsumed;
    }

void CListExamAppView::CreateListL()
	{
	// 创建列表实例
	iMainItemsListBox = new (ELeave) CAknSingleGraphicStyleListBox;
	iMainItemsListBox->SetContainerWindowL(*this);
	
	// 从资源构造列表
	TResourceReader reader;
	CEikonEnv::Static()->CreateResourceReaderLC(reader, R_LISTBOX_EXAM);
	iMainItemsListBox->ConstructFromResourceL(reader);
	CleanupStack::PopAndDestroy(); // reader
	
	// 给列表创建滚动条
	iMainItemsListBox->CreateScrollBarFrameL();
	iMainItemsListBox->ScrollBarFrame()->SetScrollBarVisibilityL(
		CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);
	}

void CListExamAppView::LoadListIconsL()
	{
	// Get the name of the file containing the icons
	TFileName fnIconFileName;
	fnIconFileName.Append(_L("\\resource\\apps\\ListExamIcon.mbm"));
	
	// Create an array of icons, reading them from the file
	CArrayPtr<CGulIcon>* icons = new(ELeave) CAknIconArray(2);
	CleanupStack::PushL(icons);
	icons->AppendL(iEikonEnv->CreateIconL(fnIconFileName, EMbmListexamiconIcon1, EMbmListexamiconIcon1_mask));
	icons->AppendL(iEikonEnv->CreateIconL(fnIconFileName, EMbmListexamiconIcon2, EMbmListexamiconIcon2_mask));
	CleanupStack::Pop(icons);
	
	iMainItemsListBox->ItemDrawer()->ColumnData()->SetIconArray(icons); // passing ownership of icons

	}

void CListExamAppView::LoadListItemsL()
	{
	CTextListBoxModel* model = iMainItemsListBox->Model();  // not taking ownership
	model->SetOwnershipType (ELbmOwnsItemArray);
	CDesCArray* mainItemsArray = STATIC_CAST(CDesCArray*, model->ItemTextArray());
	
	//装入列表项
	TBuf<32> bufItem;
	
	bufItem.Append(_L("0\tFirst Item"));
	mainItemsArray->AppendL (bufItem);
	
	bufItem.Zero();
	bufItem.Append(_L("1\tSecond Item"));
	mainItemsArray->AppendL (bufItem);
	}

void CListExamAppView::HandleListBoxEventL(CEikListBox* /*aListBox*/, TListBoxEvent aListBoxEvent)
	{
	
	// if the Select Key has been pressed
	if ((aListBoxEvent == MEikListBoxObserver::EEventEnterKeyPressed) ||
		(aListBoxEvent == MEikListBoxObserver::EEventItemClicked))
		{
			
		}
	}

void CListExamAppView::AddListitemL()
	{
	if (iMainItemsListBox)
		{
		CTextListBoxModel* model = iMainItemsListBox->Model();
		CDesCArray* itemArray = STATIC_CAST(CDesCArray*, model->ItemTextArray());
		
		TInt nCurItem = iMainItemsListBox->CurrentItemIndex();
		
		TBuf<32> bufItem;
		bufItem.Append(_L("1\tthird Item"));
		itemArray->AppendL (bufItem);
		
		iMainItemsListBox->HandleItemAdditionL();
		}
	}

void CListExamAppView::DeleteSelectedL()
	{
	if (iMainItemsListBox)
		{
		CTextListBoxModel* model = iMainItemsListBox->Model();
		
		if (model->NumberOfItems() > 0)
			{
			CDesCArray* itemArray = STATIC_CAST(CDesCArray*, model->ItemTextArray());
			
			TInt nCurItem = iMainItemsListBox->CurrentItemIndex();
			itemArray->Delete(nCurItem);
			
			AknListBoxUtils::HandleItemRemovalAndPositionHighlightL(
					iMainItemsListBox,nCurItem,ETrue);
			}
		}
	}
// End of File