videoconnutility/connutility/inc/vcxconnutilsubscriber.h
branchRCL_3
changeset 23 13a33d82ad98
parent 0 822a42b6c3f1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoconnutility/connutility/inc/vcxconnutilsubscriber.h	Wed Sep 01 12:20:37 2010 +0100
@@ -0,0 +1,138 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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:    Class to handle subscribtions from PS*
+*/
+
+
+
+
+#ifndef __VCX_CONNUTILSUBSCRI_H
+#define __VCX_CONNUTILSUBSCRI_H
+
+#include <e32base.h>	
+#include <e32property.h>
+
+class MConnUtilPubsubObserver;
+
+/**
+* This class defines operations listening modifications for the
+* property defined.
+* Notifies changes throught MConnUtilPubsubObserver interface. 
+*
+*/ 
+NONSHARABLE_CLASS ( CVcxConnUtilSubscriber ) : public CActive
+    {
+
+    public: // constuct / destruct
+    
+        /**
+         * Construction.
+         * 
+         * @param aUid      category for the property
+         * @param aKey      key id for the property
+         * @param aType     type of the key (at the moment only int is supported)
+         * @param aObserver pointer to observer to who to notify about changes
+         * 
+         * @return The newly constructed CVcxConnUtilPubSub
+         */
+        static CVcxConnUtilSubscriber* NewL( const TUid aUid, 
+                                             const TUint32 aKey,
+                                             RProperty::TType aType,
+                                             MConnUtilPubsubObserver* aObserver );
+        
+        /**
+         * Destructor.
+         *
+         */
+        virtual ~CVcxConnUtilSubscriber();
+        
+        /**
+         * Returns a reference to property this 
+         * subscriber listens to.
+         * 
+         * @return RProperty
+         */
+        RProperty& Property();
+              
+        /**
+         * Start subscribing if not already started
+         */
+        void Start();
+        
+        
+    private:  // constuct
+        
+        /**
+         * Constructor
+         *
+         */
+        CVcxConnUtilSubscriber( const TUid aUid, 
+                                const TUint32 aKey, 
+                                RProperty::TType aType,
+                                MConnUtilPubsubObserver* aObserver );
+        
+        /**
+         * Symbian 2nd phase construction
+         *   
+         */
+        void ConstructL();
+     
+    private: // from CActive
+        
+        /**
+         * From CActive. Calles when value subscribed to changes 
+         * 
+         */  
+        void RunL();
+        
+        /**
+         * From CActive. Cancels subscribtion
+         * 
+         */
+        void DoCancel();
+        
+    private:
+        
+        /**
+         * ETrue if object is initialized and subscribtion starts
+         */
+        TBool                    iInitialized;
+        
+        /**
+         * Property to subscribe
+         */
+        RProperty                iProperty;
+        
+        /**
+         * Category uid for the property
+         */
+        const TUid               iUid;
+        
+        /**
+         * Key id for the property
+         */
+        const TUint32            iKey;
+        
+        /**
+         * type of the property
+         */
+        RProperty::TType         iKeyType;
+                
+        /**
+         * Observer
+         */
+        MConnUtilPubsubObserver* iObserver; 
+    };      
+
+#endif // __VCX_CONNUTILSUBSCRI_H