internetemailcontainer.cpp

手机开发

/*
* ============================================================================
*  Name	 : CInternetEmailContainer from InternetEmailContainer.h
*  Part of  : InternetEmail
*  Created  : 25.10.2005 by Forum Nokia
*  Implementation notes:
*	  Container which is the view for our model.
*	  Basically holds Array for custom listbox which
*	  is used to hold list of email message headers.
*	  Implements  both MEikListBoxObserver to handle listbox events
*	  and MDesCArray to handle item addition etc. events. So this
*	  class itself is the array for the listbox it handles.
*
*	 Initial content was generated by S60 AppWizard.
*  Version  : 1.1
*  Copyright: Nokia Corporation 2004
* ============================================================================
*/

// INCLUDE FILES
#include "InternetEmailContainer.h"

#include <eiklabel.h>  // for example label control
#include <aknutils.h>  // for Fonts.
#include <aknlists.h>  // for listbox
#include <barsread.h>  // for resource reader
#include <avkon.hrh>

#include "Internetemail.hrh"
#include "InternetEmailEngine.h"
#include <Internetemail.rsg>


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

// -------------------------------------------------------
// CInternetEmailContainer::ConstructL(const TRect& aRect)
//  EPOC two phased constructor
// -------------------------------------------------------
//
void CInternetEmailContainer::ConstructL(const TRect& aRect, CInternetEmailAppUi* aParent )
	{
	iParent=aParent;
	CreateWindowL();

	iListBox = new (ELeave) CAknDoubleStyleListBox;
	iListBox->SetContainerWindowL(*this);
	iListBox->ConstructL(this, EAknListBoxSelectionList);

	iListBox->Model()->SetItemTextArray(this); //we make ourself to be the array
	iListBox->Model()->SetOwnershipType(ELbmDoesNotOwnItemArray); //thus lb doesnt control our deletion

	iListBox->SetListBoxObserver( this );
	iListBox->CreateScrollBarFrameL(ETrue); //we set automatic scrollbar
	iListBox->ScrollBarFrame()->SetScrollBarVisibilityL(
		CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto );

	iListBox->SetRect( aRect );
	iListBox->ActivateL();

	// set window size
	SetRect(aRect);

	// activate window
	ActivateL();
	}

// ---------------------------------------------------
// CInternetEmailContainer::~CInternetEmailContainer()
// ---------------------------------------------------
//
CInternetEmailContainer::~CInternetEmailContainer()
	{
	delete iListBox;
	}


// --------------------------------------------------
// CInternetEmailContainer::SizeChanged()
//  Called by framework when the view size is changed
// --------------------------------------------------
//
void CInternetEmailContainer::SizeChanged()
	{
	iListBox->SetRect( Rect() );
	}

// -------------------------------------------------------
// CInternetEmailContainer::CountComponentControls() const
// -------------------------------------------------------
//
TInt CInternetEmailContainer::CountComponentControls() const
	{
	return 1;
	}

// ------------------------------------------------------------
// CInternetEmailContainer::ComponentControl(TInt aIndex) const
// ------------------------------------------------------------
//
CCoeControl* CInternetEmailContainer::ComponentControl(TInt aIndex) const
	{
	switch ( aIndex )
		{
		case 0:
			return iListBox;
		default:
			return NULL;
		}
	}

// -------------------------------------------------------
// CInternetEmailContainer::Draw(const TRect& aRect) const
// -------------------------------------------------------
//
void CInternetEmailContainer::Draw(const TRect& aRect) const
	{
	CWindowGc& gc = SystemGc();
	gc.SetPenStyle(CGraphicsContext::ENullPen);
	gc.SetBrushColor(KRgbGray);
	gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
	gc.DrawRect(aRect);
	}

// ------------------------------------------------------
// TKeyResponse CInternetEmailContainer::OfferKeyEventL(
//		const TKeyEvent& aKeyEvent, TEventCode aType)
//  This function is used to pick subset of keyevents for
//  our custom handler.
// ------------------------------------------------------
//
TKeyResponse CInternetEmailContainer::OfferKeyEventL(
	const TKeyEvent& aKeyEvent, TEventCode aType)
	{
	if ( aType != EEventKey )
		{
		return EKeyWasNotConsumed;
		}

	switch ( aKeyEvent.iCode )
		{
		// Up & Down & enter arrow key's event transfer to list box
		case EKeyOK:
		case EKeyUpArrow:
		case EKeyDownArrow:
			if ( iListBox )
				{
				return iListBox->OfferKeyEventL( aKeyEvent, aType );
				}
			break;

		default:
			break;
		}

	return EKeyWasNotConsumed;
	}

// -----------------------------------------------
// CInternetEmailContainer::HandleControlEventL(
//	 CCoeControl* aControl,TCoeEvent aEventType)
// -----------------------------------------------
//
void CInternetEmailContainer::HandleControlEventL(
	CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
	{
	// TODO: Add your control event handler code here
	}


// ------------------------------------------------
// CInternetEmailContainer::HandleListBoxEventL(
//	CEikListBox* aListBox,TListBoxEvent aEventType)
//  Custom event handler.
// ------------------------------------------------
//
void CInternetEmailContainer::HandleListBoxEventL(
	CEikListBox* aListBox,TListBoxEvent aEventType)
	{
	if(aListBox==iListBox &&
	( aEventType==MEikListBoxObserver::EEventEnterKeyPressed ||
	  aEventType == MEikListBoxObserver::EEventItemClicked ))
		{
		OpenEmailL(); // opens selected entry using generic framework
		}
	}

// ----------------------------------------------------
// void CInternetEmailContainer::OpenEmailL()
//  function to call engine interface method
// ----------------------------------------------------
//
void CInternetEmailContainer::OpenEmailL()
	{
	TInt currentItem=iListBox->CurrentItemIndex();
	if(currentItem>=0 && currentItem<iParent->Model()->RemoteEmailCount())
		{
		iParent->Model()->RemoteOpenEmailL(currentItem);
		}
	}

// ---------------------------------------------------------------
// void CInternetEmailContainer::EntryToListbox(TInt aIndex) const
//  Gets header message entry header information from model
//	if model is suddenly cancelled traps and draws blanco.
// ---------------------------------------------------------------
//
void CInternetEmailContainer::EntryToListbox(TInt aIndex) const
	{
	TPtrC from;
	TPtrC subject;

	TRAPD(error,from.Set(iParent->Model()->RemoteEmailSenderL(aIndex)));
	if(error == KErrNone)
		{
		TRAP(error,subject.Set(iParent->Model()->RemoteEmailTextL(aIndex)));
		if(error == KErrNone)
			{
			iText.Format(_L("\t%S\t%S"),&subject,&from);
			}
		else
			{
			iText.Zero();
			}
		}
	else
		{
		iText.Zero();
		}
	}

// ------------------------------------------------------------
// TInt CInternetEmailContainer::MdcaCount() const
//  From MDesCArray. Handles counting of array items from model
// ------------------------------------------------------------
//
TInt CInternetEmailContainer::MdcaCount() const
	{
	return iParent->Model()->RemoteEmailCount();
	}

// -----------------------------------------------------------
// TPtrC CInternetEmailContainer::MdcaPoint(TInt aIndex) const
//  From MDesCArray. Handles the insertion of needed text from
//	model to pointed member of array.
// -----------------------------------------------------------
//
TPtrC CInternetEmailContainer::MdcaPoint(TInt aIndex) const
	{
	EntryToListbox(aIndex);
	return iText;
	}

// -------------------------------------------------
// void CInternetEmailContainer::MailCountChange()
//  Public funtion called from engine observer
//  callback handlers when model changes are
//  occurring.
// -------------------------------------------------
//
void CInternetEmailContainer::MailCountChange()
	{
	iListBox->HandleItemAdditionL();

	//a trick to set default selection when model changes from N to 1
	TInt currentItem = iListBox->CurrentItemIndex();
	if(currentItem>=0 && currentItem<iParent->Model()->RemoteEmailCount())
		{
		if( iListBox->ScrollBarFrame() )
			{
			iListBox->ScrollBarFrame()->MoveVertThumbTo( currentItem );
			}
		}
	}


// End of File