cmultiparthello.cpp

symbian活动对象的例子

// CMultiPartHello.cpp
//
// Copyright (c) 2002 Symbian Ltd.  All rights reserved.

#include "cmultiparthello.h"

#include <eikenv.h>
#include <activehello.rsg>

#include "cactivehelloappview.h"

CMultiPartHello* CMultiPartHello::NewL(CActiveHelloAppView* aAppView)
	{
	CMultiPartHello* self = new (ELeave) CMultiPartHello();
	CleanupStack::PushL(self);
	self->ConstructL(aAppView);
	CleanupStack::Pop(self);
	return self;
	}

CMultiPartHello::~CMultiPartHello()
	{
	Cancel();

	iTimer.Close();
	}

CMultiPartHello::CMultiPartHello()
: CActive(0)
	{
	CActiveScheduler::Add(this);
	}

void CMultiPartHello::ConstructL(CActiveHelloAppView* aAppView)
	{
	iAppView=aAppView;
	User::LeaveIfError(iTimer.CreateLocal());

	iEnv = CEikonEnv::Static();
	}

void CMultiPartHello::CompleteSelf()
	{
	TRequestStatus* pStat = &iStatus;
	User::RequestComplete(pStat, KErrNone);
	SetActive();
	}

void CMultiPartHello::Start(TTimeIntervalMicroSeconds32 aDelay)
	{
	_LIT(KMultiPartHelloPanic, "CMultiPartHello");
	__ASSERT_ALWAYS( iState == EIdle, User::Panic(KMultiPartHelloPanic, 1));

	iDelay = aDelay;
	iState = EShowHello;
	CompleteSelf();
	}

void CMultiPartHello::ShowText(TBool aShowText)
	{
	iAppView->iShowText=aShowText;
	iAppView->DrawNow();
	}

void CMultiPartHello::RunL()
	{
	THelloState nextState = iState;
	switch( iState )
		{
	case EShowHello:
		{
		ShowText(ETrue);

		// issue request
		iTimer.After(iStatus, iDelay);
		SetActive();

		nextState = EHideHello;
		} break;
	case EHideHello:
		{
		ShowText(EFalse);

		CompleteSelf();
		nextState = EShowInfoHello;
		} break;
	case EShowInfoHello:
		{
		iEnv->InfoMsg(R_ACTIVEHELLO_TEXT_HELLO);

		CompleteSelf();
		nextState = EWaitState;
		} break;
	case EWaitState:
		{
		// issue request
		iTimer.After(iStatus, iDelay);
		SetActive();

		nextState = EShowHello;
		} break;
	default:
		break;
		}
	iState = nextState;
	}

void CMultiPartHello::DoCancel()
	{
	switch( iState )
		{
	case EHideHello:
	case EShowHello:
		{
		iTimer.Cancel();
		} break;
	default:
		break;
		}
	ShowText(ETrue);
	iState = EIdle;
	}