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/*
* Copyright (c) 2001-2009 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:
*
*/
#include "ccontactvieweventqueue.h"
namespace {
// LOCAL CONSTANTS
enum TPanicCode
{
EPanicPreCond_HandleContactViewEvent = 1,
EPanicEventQueueFull
};
// LOCAL FUNCTIONS
void Panic(TPanicCode aReason)
{
_LIT(KPanicText, "CContactViewEventQueue");
User::Panic(KPanicText,aReason);
}
void ResetEvent(TContactViewEvent& aEvent)
{
aEvent.iEventType = TContactViewEvent::TEventType(-1);
aEvent.iInt = -1;
aEvent.iContactId = KNullContactId;
}
}
// ================= MEMBER FUNCTIONS =======================
CContactViewEventQueue* CContactViewEventQueue::NewL
(CContactViewBase* aView, TInt aMaxQueueSize)
{
CContactViewEventQueue* self = new(ELeave) CContactViewEventQueue;
CleanupStack::PushL(self);
self->ConstructL(aView,aMaxQueueSize);
CleanupStack::Pop(self);
return self;
}
CContactViewEventQueue::~CContactViewEventQueue()
{
CTimer::Cancel();
if (iView)
{
iView->Close(*this);
}
}
TBool CContactViewEventQueue::ListenForEvent(TTimeIntervalSeconds aTimeOut, TContactViewEvent& aEvent)
{
ResetEvent(aEvent);
CTimer::Cancel();
if (iQueue.IsEmpty())
{
CTimer::After(aTimeOut.Int() * 1000000);
// wait for event or for the timer to expire
CActiveScheduler::Start();
}
if (!iQueue.IsEmpty())
{
aEvent = iQueue.Head();
iQueue.PopHead();
return ETrue;
}
else
{
return EFalse;
}
}
void CContactViewEventQueue::RunL()
{
// Timer expired
CActiveScheduler::Stop();
}
void CContactViewEventQueue::HandleContactViewEvent
(const CContactViewBase& aView, const TContactViewEvent& aEvent)
{
__ASSERT_ALWAYS(!iView || iView == &aView, Panic(EPanicPreCond_HandleContactViewEvent));
TBool eventPushed = iQueue.Push(aEvent);
__ASSERT_ALWAYS(eventPushed,Panic(EPanicEventQueueFull));
// If we receive item removed event, it is a signal for the this
// view observer to stop observing.
// The observer could have been for example a memory entry representation
// and the memory entry has now been deleted -> the observer must close and exit.
if(iCloseOnItemRemoved && (aEvent.iEventType == TContactViewEvent::EItemRemoved))
{
iView->Close(*this);
}
if (IsActive())
{
CTimer::Cancel();
CActiveScheduler::Stop();
}
}
CContactViewEventQueue::CContactViewEventQueue()
: CTimer(CActive::EPriorityStandard)
{
}
void CContactViewEventQueue::ConstructL
(CContactViewBase* aView, TInt aMaxQueueSize)
{
iCloseOnItemRemoved = EFalse;
CTimer::ConstructL();
iQueue.ConstructL(aMaxQueueSize);
CActiveScheduler::Add(this);
if (aView)
{
aView->OpenL(*this);
iView = aView;
}
}
// End of File
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