landmarksui/engine/src/CLmkDbEventListener.cpp
branchRCL_3
changeset 17 1fc85118c3ae
parent 16 8173571d354e
child 18 870918037e16
--- 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