--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imagehandlingutilities/thumbnailmanager/thumbnailserver/inc/thumbnailtask.h	Tue Jan 26 15:18:05 2010 +0200
@@ -0,0 +1,210 @@
+/*
+* Copyright (c) 2006-2007 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:  Base class for thumbnail server tasks
+ *
+*/
+
+
+#ifndef THUMBNAILTASK_H
+#define THUMBNAILTASK_H
+
+#include "thumbnailmanager.h"    // TThumbnailRequestId
+#include "thumbnailmanagerconstants.h" // TThumbnailServerRequestId
+
+
+class CThumbnailTaskProcessor;
+class CThumbnailServerSession;
+
+/**
+ *  Base class for thumbnail server tasks.
+ *
+ *  @since S60 v5.0
+ */
+class CThumbnailTask: public CActive
+    {
+public:
+    /**
+     * Task state.
+     * @since S60 v5.0
+     */
+    enum TTaskState
+        {
+        /**
+         * This task is waiting to be run.
+         */
+        EIdle, 
+
+        /**
+         * This task is currently running.
+         */
+        ERunning, 
+
+        /**
+         * This task has completed and can be destroyed.
+         */
+        EComplete
+    };
+
+public:
+
+    /**
+     * C++ default constructor
+     *
+     * @since S60 v5.0
+     * @param aProcessor Processor object for running tasks.
+     * @param aPriority Priority of the task.
+     * @return New CThumbnailTask instance.
+     */
+    CThumbnailTask( CThumbnailTaskProcessor& aProcessor, TInt aPriority );
+
+    /**
+     * Destructor
+     *
+     * @since S60 v5.0
+     */
+    virtual ~CThumbnailTask();
+
+public:
+
+    /**
+     * Returns priority of task.
+     *
+     * @since S60 v5.0
+     * @return Priority of the task.
+     */
+    TInt Priority()const;
+
+    /**
+     * Returns state of task.
+     *
+     * @since S60 v5.0
+     * @return State.
+     */
+    TTaskState State()const;
+
+    /**
+     * SetMessageData
+     *
+     * @since S60 v5.0
+     * @param aRequestId Request ID.
+     * @param aMessage Message.
+     */
+    virtual void SetMessageData( const TThumbnailServerRequestId& aRequestId,
+        const RMessage2& aMessage );
+    
+    /**
+     * SetMessageData if message is not needed to complete
+     *
+     * @since S60 v5.0
+     * @param aRequestId Request ID.
+     */
+     virtual void SetMessageData( const TThumbnailServerRequestId& aRequestId );
+
+    /**
+     * Resets message data.
+     *
+     * @since S60 v5.0
+     */
+    virtual void ResetMessageData();
+
+    /**
+     * Cancels message.
+     *
+     * @since S60 v5.0
+     */
+    virtual void CancelMessage();
+
+    /**
+     * Returns ID of specific task.
+     *
+     * @since S60 v5.0
+     * @return Request ID.
+     */
+    virtual TThumbnailServerRequestId RequestId()const;
+
+    /**
+     * Changes priority of the task.
+     *
+     * @since S60 v5.0
+     * @param aNewPriority New priority.
+     */
+    virtual void ChangeTaskPriority( TInt aNewPriority );
+
+    /**
+     * StartL
+     *
+     * @since S60 v5.0
+     */
+    virtual void StartL();
+
+    /**
+     * Implements cancellation of an outstanding request.
+     *
+     * @since S60 v5.0
+     */
+    virtual void DoCancel();    
+    
+    /**
+     * StartError
+     *
+     * @since S60 v5.0
+     * @param aError Error code.
+     */
+    virtual void StartError( TInt aError );
+
+    /**
+     * Complete
+     *
+     * @since S60 v5.0
+     * @param aReason Status code.
+     */
+    virtual void Complete( TInt aReason );
+    
+    /**
+     * Continue without deleting task
+     *
+     * @since S60 v5.0
+     */
+    virtual void Continue();
+
+protected:
+    // data
+
+    /**
+     * Processor.
+     */
+    CThumbnailTaskProcessor& iProcessor;
+
+    /**
+     * Priority of the task.
+     */
+    TInt iPriority;
+
+    /**
+     * State of the task.
+     */
+    TTaskState iState;
+
+    /**
+     * Id of the request.
+     */
+    TThumbnailServerRequestId iRequestId;
+
+    /**
+     * Message.
+     */
+    RMessage2 iMessage;
+};
+
+#endif // THUMBNAILTASK_H