diff -r 61bc0f252b2b -r bac7acad7cb3 camerauis/cameraapp/generic/inc/cameracontroller/camcameracontrolleractive.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/camerauis/cameraapp/generic/inc/cameracontroller/camcameracontrolleractive.h	Wed Sep 01 12:30:54 2010 +0100
@@ -0,0 +1,143 @@
+/*
+* 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:  CCamCameraControllerActive class declaration.
+*                This class presents an active object used to call back 
+*                CCamCameraController methods. This is done to keep clients
+*                not blocked when issuing a request or sequence of requests.
+*                
+*
+*/
+
+
+#ifndef CAM_CAMERACONTROLLERACTIVE_H
+#define CAM_CAMERACONTROLLERACTIVE_H
+
+// ===========================================================================
+// Included headers
+
+#include <e32base.h>
+
+
+// ===========================================================================
+// Forward declarations
+
+class CCamCameraController;
+
+
+// ===========================================================================
+// Classes
+
+/**
+* Camera controller active object.
+*
+* Used to assist on asynchronising CCamCameraController requests.
+*
+*/
+class CCamCameraControllerActive : public CActive
+  {
+  // =========================================================================
+  // Methods
+ 
+  // -------------------------------------------------------------------------
+  // Constructor(s) and destructor
+  public:
+
+    /**
+    * Static 2 phase constructor.
+    * @param aController Camera controller, which callbacks will be called.
+    * @param aPriority   This active object's priority.
+    */
+    static CCamCameraControllerActive* NewL( CCamCameraController& aController, TInt aPriority );
+    
+    /**
+    * Destructor.
+    */
+    virtual ~CCamCameraControllerActive();
+
+  private:
+  
+    /**
+    * Standard Symbian 2nd phase constructor.
+    */
+    void ConstructL();
+    
+    /**
+    * Standard C++ constructor.
+    */
+    CCamCameraControllerActive( CCamCameraController& aController, 
+                                TInt                  aPriority   );
+
+  // -------------------------------------------------------------------------
+  // from CActive
+  protected:
+  
+    /**
+    * Reacts to CActive::Cancel, if this AO was active.
+    * @see See CActive for more info.
+    */
+  	virtual void DoCancel();
+
+    /**
+    * Calls CCamCameraController::ProcessNextRequestL. If leave occurs there,
+    * RunError will be called by CActiveScheduler. Checks the return value of
+    * CCamCameraController::ProcessNextRequestL and if it is not zero, sets this
+    * AO ready for new iteration.
+    * @see See CActive for more info.
+    */
+  	virtual void RunL();
+
+    /**
+    * Called if a leave occurs in RunL.
+    * @param aError Leave code from RunL.
+    * @return Always KErrNone.
+    * @see See CActive for more info.
+    */
+  	virtual TInt RunError( TInt aError );
+
+  // -------------------------------------------------------------------------
+  // New methods.
+  public:
+
+    /**
+    * Sets this Active Object to ActiveScheduler's queue.
+    * RunL calls back CCamCameraController::ProcessNextRequestL.
+    * If the return value is not zero, this AO will be scheduled to run again.
+    * Otherwise new call to IssueRequest is needed.
+    * If leave occurs in RunL, RunError calls CCameraController::EndSequence.
+    */
+    void IssueRequest();
+
+  private:
+
+    /**
+    * Stop the sequence handling on error.
+    * Calls CCameraController::EndSequence.
+    */
+    void HandleError( TInt aStatus );
+
+  // =========================================================================
+  // Data
+  private: 
+
+    /**
+    * Camera controller, which callbacks will be called.
+    */
+    CCamCameraController& iController;
+    
+  // =========================================================================
+  };
+  
+#endif // CAM_CAMERACONTROLLERACTIVE_H
+
+// end of file