diff -r 09b1ac925e3f -r 03674e5abf46 securitydialogs/lockapp/src/lockappobserverlist.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/securitydialogs/lockapp/src/lockappobserverlist.cpp	Wed Sep 01 12:19:59 2010 +0100
@@ -0,0 +1,126 @@
+/*
+* Copyright (c) 2007 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:  Lock App internal state control
+ *
+*/
+
+
+#include "lockappstatecontrol.h"
+#include "lockappstatepublisher.h"
+#include "lockappkeyguardcontrol.h"
+#include "lockapputils.h"
+#include "lockappecsdetector.h"
+
+const TInt KLockAppObserverListGranularity = 4;
+
+// ---------------------------------------------------------------------------
+// Standard C++ constructor
+// ---------------------------------------------------------------------------
+CLockAppObserverList::CLockAppObserverList( )
+    {
+    // no implementation required
+    }
+
+// ---------------------------------------------------------------------------
+// Destroys the observer list and all existing observers.
+// ---------------------------------------------------------------------------
+CLockAppObserverList::~CLockAppObserverList( )
+    {
+    if ( iObserverList )
+        {
+        TInt count = iObserverList->Count( );
+        for (TInt index=0; index<count; index++ )
+            {
+            delete (*iObserverList)[index];
+            }
+        iObserverList->Reset( );
+        delete iObserverList;
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Adds lock state observer to the observer list.
+// ---------------------------------------------------------------------------
+void CLockAppObserverList::AddObserverL( MLockAppStateObserver* aObserver )
+    {
+    if ( aObserver )
+        {
+        TBool found(EFalse);
+        // check that the observer has not been added before
+        TInt count = iObserverList->Count( );
+        for ( TInt index=0; index<count; index++ )
+            {
+            if ( ((*iObserverList)[index]) == aObserver )
+                {
+                found = ETrue;
+                }
+            }
+        if ( !found )
+            {
+            iObserverList->AppendL( aObserver );
+            }
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Removes lock state observer from the observer list.
+// ---------------------------------------------------------------------------
+void CLockAppObserverList::RemoveObserver( MLockAppStateObserver* aObserver )
+    {
+    if ( aObserver )
+        {
+        TInt count = iObserverList->Count( );
+        for ( TInt index=0; index<count; index++ )
+            {
+            if ( ((*iObserverList)[index]) == aObserver )
+                {
+                iObserverList->Remove( index );
+                return;
+                }
+            }
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Constructs the observer list.
+// ---------------------------------------------------------------------------
+void CLockAppObserverList::BaseConstructL( )
+    {
+    // create observer list
+    iObserverList = new (ELeave) RPointerArray<MLockAppStateObserver>(KLockAppObserverListGranularity);
+    }
+
+// ---------------------------------------------------------------------------
+// Not implemented, meant for derived classes
+// ---------------------------------------------------------------------------
+void CLockAppObserverList::HandleLockStatusChangedL( TLockStatus /*aLockStatus*/)
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// Informs observers that the lock state has changed.
+// ---------------------------------------------------------------------------
+void CLockAppObserverList::PostStatusChangeL( TLockStatus aStatusChange )
+    {
+    // first inform the main control
+    HandleLockStatusChangedL( aStatusChange );
+
+    // for child observers
+    TInt count = iObserverList->Count( );
+    for ( TInt index=count-1; index>=0; index-- )
+        {
+        //TRAP_IGNORE
+        ((*iObserverList)[index])->HandleLockStatusChangedL( aStatusChange );
+        }
+    }