--- a/landmarksui/engine/src/CLmkDbEventListener.cpp Thu Aug 19 09:48:36 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,193 +0,0 @@
-/*
-* Copyright (c) 2002 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: LandmarksUi Content File -
-*
-*/
-
-
-
-
-// INCLUDE FILES
-#include "CLmkDbEventListener.h"
-#include "MLmkDbObserver.h"
-#include <EPos_CPosLandmarkDatabase.h>
-#include <lmkerrors.h>
-
-
-// CONSTANTS
-/// Unnamed namespace for local definitions
-namespace {
-
-const TInt KLmkEventObserversGranularity( 5 );
-
-#if defined(_DEBUG)
-_LIT( KPanicMsg, "CLmkDbEventListener" );
-void Panic( TPanicCode aReason )
- {
- User::Panic( KPanicMsg, aReason );
- }
-#endif
-} // namespace
-// ============================ MEMBER FUNCTIONS ===============================
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::CLmkDbEventListener
-// C++ constructor can NOT contain any code, that
-// might leave.
-// -----------------------------------------------------------------------------
-//
-CLmkDbEventListener::CLmkDbEventListener()
- : CActive( EPriorityStandard ),
- iObservers( KLmkEventObserversGranularity )
- {
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::ConstructL
-// Symbian 2nd phase constructor can leave.
-// -----------------------------------------------------------------------------
-//
-void CLmkDbEventListener::ConstructL()
- {
- CActiveScheduler::Add( this );
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::NewL
-// Two-phased constructor.
-// -----------------------------------------------------------------------------
-//
-CLmkDbEventListener* CLmkDbEventListener::NewL()
- {
- CLmkDbEventListener* self =
- new ( ELeave ) CLmkDbEventListener();
-
- CleanupStack::PushL( self );
- self->ConstructL();
- CleanupStack::Pop();
-
- return self;
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::~CLmkDbEventListener
-// -----------------------------------------------------------------------------
-//
-CLmkDbEventListener::~CLmkDbEventListener()
- {
- Cancel();
- iObservers.Close();
- delete iDbURI;
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::AddObserverL
-// -----------------------------------------------------------------------------
-//
-void CLmkDbEventListener::AddObserverL(
- MLmkDbObserver& aObserver,
- CPosLandmarkDatabase& aDb )
- {
- HBufC* paramURI = aDb.DatabaseUriLC();
- if ( iDb )
- { // Only one database currently supported
- if ( iDbURI->Compare( *paramURI ) != 0 )
- {
- User::Leave( KErrNotSupported );
- }
- }
-
- TInt index = iObservers.Find( &aObserver );
- if ( index >= 0 )
- {
- User::Leave( KErrAlreadyExists );
- }
-
- User::LeaveIfError( iObservers.Append( &aObserver ) );
- if ( iObservers.Count() == 1 )
- {
- iDb = &aDb;
- StartListening();
- }
-
- // For simplicity we always assign new value to iDbURI although often
- // the content remains the same as it was.
- delete iDbURI;
- iDbURI = paramURI;
- CleanupStack::Pop(); // paramURI, ownership was transferred
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::RemoveObserver
-// -----------------------------------------------------------------------------
-//
-void CLmkDbEventListener::RemoveObserver( MLmkDbObserver& aObserver )
- {
- TInt index = iObservers.Find( &aObserver );
- if ( index >= 0 )
- {
- iObservers.Remove( index );
- }
- if ( iObservers.Count() == 0 )
- {
- Cancel();
- }
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::StartListening
-// -----------------------------------------------------------------------------
-//
-void CLmkDbEventListener::StartListening()
- {
- iEvent.iEventType = EPosLmEventUnknownChanges;
- iEvent.iLandmarkItemId = KPosLmNullItemId;
- __ASSERT_DEBUG( !IsActive(), Panic( KLmkPanicAlreadyActive ) );
- __ASSERT_DEBUG( iDb, Panic( KLmkPanicNullMember ) );
- iDb->NotifyDatabaseEvent( iEvent, iStatus );
- SetActive();
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::RunL
-// -----------------------------------------------------------------------------
-//
-void CLmkDbEventListener::RunL()
- {
- // No need for implementing RunError() as long as RunL() is non-leaving.
- for ( TInt i( 0 ); i < iObservers.Count(); ++i )
- {
- iObservers[i]->HandleDatabaseEvent( iEvent );
- }
- StartListening();
- }
-
-// -----------------------------------------------------------------------------
-// CLmkDbEventListener::DoCancel
-// -----------------------------------------------------------------------------
-//
-void CLmkDbEventListener::DoCancel()
- {
- if ( iDb )
- {
- iDb->CancelNotifyDatabaseEvent();
- // The policy is that when database observation is stopped we
- // release the database association. It may become invalid after that.
- iDb = NULL;
- delete iDbURI;
- iDbURI = NULL;
- }
- }
-
-// End of File