--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/commonui/src/glxzoomstatepublisher.cpp	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,130 @@
+/*
+* Copyright (c) 2008-2009 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:    Utility class for publishing the zoom state
+*
+*/
+
+
+
+
+// Class header
+#include "glxzoomstatepublisher.h"
+
+// External includes
+#include <bldvariant.hrh> // for feature flag
+#include <cfclient.h>
+#include <cflistener.h>
+
+// Internal includes
+#include <glxlog.h>
+
+/**
+ * @internal reviewed 5/02/2007 by Alex Birkett
+ */
+ 
+// -----------------------------------------------------------------------------
+// NGlxZoomStatePublisher
+// -----------------------------------------------------------------------------
+namespace NGlxZoomStatePublisher
+    {
+#ifdef GLX_PUBLISH_ZOOMING_STATE
+    // local constants
+    _LIT( KGlxContextSource, "Application" );
+    _LIT( KGlxContextType, "Photos.Zoom" );
+    _LIT_SECURITY_POLICY_PASS( KGlxContextSec );
+
+    _LIT( KGlxContextValueEnabled, "Enabled" );
+    _LIT( KGlxContextValueDisabled, "Disabled" );
+
+    /**
+     * Implementation of MCFListener, needed
+     * since CCFClient takes a reference
+     */
+    class TemporaryListener : public MCFListener
+        {
+        private: // From MCFListener
+            /// @ref MCFListener
+            void ContextIndicationL(
+                const CCFContextIndication& /*aChangedContext*/ )
+                {
+                // nothing to do
+                }
+            /// @ref MCFListener
+            void ActionIndicationL(
+                const CCFActionIndication& /*aActionToExecute*/ )
+                {
+                // nothing to do
+                }
+            /// @ref MCFListener
+            void HandleContextFrameworkError(
+                TCFError /*aError*/,
+                const TDesC& /*aSource*/,
+                const TDesC& /*aType*/ )
+                {
+                // nothing to do
+                }
+            /// @ref MCFListener
+            TAny* Extension( const TUid& /*aExtensionUid*/ ) const
+                {
+                // nothing to do
+                return NULL;
+                }
+        };
+
+// -----------------------------------------------------------------------------
+// PublishStateL
+// -----------------------------------------------------------------------------
+EXPORT_C void PublishStateL( TBool aEnabled )
+    {
+    TRACER( "NGlxZoomStatePublisher::PublishStateL" );
+    // publish zooming state if the feature is enabled
+    TemporaryListener templistener;
+    // create client and keep it on the cleanupstack
+    CCFClient* client = CCFClient::NewLC( templistener );
+    // define the context
+    TInt err = client->DefineContext( 
+        KGlxContextSource, KGlxContextType, KGlxContextSec );
+    // if either success or context already there
+    if( ( err == KErrNone )||
+        ( err == KErrAlreadyExists ) )
+        {
+        // create context object and keep it on the cleanupstack
+        CCFContextObject* context = CCFContextObject::NewLC();
+        // set source and type
+        context->SetSourceL( KGlxContextSource );
+        context->SetTypeL( KGlxContextType );
+        // default zoom state is disabled
+        context->SetValueL( KGlxContextValueDisabled );
+        if( aEnabled )
+            {
+            // enable zoom state
+            context->SetValueL( KGlxContextValueEnabled );
+            }
+        // publish, cant really deal with the error so just ignore it
+        (void)client->PublishContext( *context );
+        CleanupStack::PopAndDestroy( context );
+        }
+    // release client
+    CleanupStack::PopAndDestroy( client );
+    } // PublishStateL
+#else
+// -----------------------------------------------------------------------------
+// PublishStateL
+// -----------------------------------------------------------------------------
+EXPORT_C void PublishStateL( TBool /*aEnabled*/ )
+    {
+    }
+#endif
+    } // namespace
+