diff -r b183ec05bd8c -r 19bba8228ff0 devicediagnosticsfw/diagframework/inc/diagengineobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devicediagnosticsfw/diagframework/inc/diagengineobserver.h	Wed Sep 01 12:27:42 2010 +0100
@@ -0,0 +1,149 @@
+/*
+* 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:  Observer interface to use with CDiagEngine
+*
+*/
+
+
+#ifndef DIAGENGINEOBSERVER_H
+#define DIAGENGINEOBSERVER_H
+
+
+// SYSTEM INCLUDES
+#include <e32def.h>                 // TUint
+#include <DiagCommonDialog.h>       // TDiagCommonDialog
+#include <DiagAppCommand.h>         // TDiagAppCommand
+
+// FORWARD DECLARATION
+class CDiagResultsDatabaseItem;
+class CAknDialog;
+
+/**
+*  Diagnostics Framework Engine Observer
+*
+*  This interface is called by CDiagEngine to notify its client
+*  of progress of requests made to engine.
+*
+* @since S60 v5.0
+*/
+class MDiagEngineObserver
+    {
+public: // Public Data types
+    enum TSuspendReason
+        {
+        ESuspendByClient = 0,
+        ESuspendByPhoneCall
+        };
+
+    enum TResumeReason
+        {
+        EResumedByClient = 0,
+        EAutoResumedByCallHangup
+        };
+
+public: // Public interface
+
+    /**
+    * Notify client of test execution begin. Clients can get testplan using
+    * CDiagEngine::ExecutionPlanL. 
+    */
+    virtual void TestExecutionBeginL() = 0;
+
+    /**
+    * Notify client of test execution progress.
+    *
+    * @param aCurrentItemStep       - Progress in current entry.
+    * @param aCurrentItemTotalSteps - Total steps to execute in current entry.
+    */
+    virtual void TestExecutionProgressL( TUint aCurrentItemStep,
+                                         TUint aCurrentItemTotalSteps ) = 0;
+
+    /**
+    * Notify client of execution completion of one plug-in.
+    *   This can be either test plug-in or suite plug-in.
+    *
+    * @param aError  - KErrNone - Success.
+    *   KErrNoMemory - Out of memory.
+    *   KErrCancel   - Cancelled due to ExecutionStopL()
+    *
+    * @param aResult - Result of the test. Ownership is transferred here. 
+    *  Client must deallocate aResult to avoid memory leak. aResult is Null 
+    *  if the plug-in being executed is a suite pre/post method.
+    */
+    virtual void TestExecutionPluginExecutedL( TInt aError,
+                                               CDiagResultsDatabaseItem* aResult ) = 0;
+
+    /**
+    * Notify client of execution suspend.
+    *
+    * @param aSuspendReason - Why execution is suspended.
+    */
+    virtual void TestExecutionSuspendedL( TSuspendReason aSuspendReason ) = 0;
+
+    /**
+    * Notify client of execution resume.
+    *
+    * @param aResumeReason - Why execution is being resumed
+    */
+    virtual void TestExecutionResumedL( TResumeReason aResumeReason ) = 0;
+
+    /**
+    * Notify client of engine stopping.
+    *
+    * This indicates that engine execution has stopped. There will not be any
+    * further messages from engine. This could be called because all
+    * tests are completed, or an unrecoverable error occured during execution.
+    *
+    * Note that if cancel is called during plan creation or if plan creation
+    * fails, TestExecutionStoppedL() may be called withing first calling
+    * TestExecutionBeginL(). 
+    *
+    * @param aError - Reason for engine stopping. 
+    *   a) KErrNone - All tests are successfully completed.
+    *   b) KErrCancel - ExecutionStopL is called with ECancelAll. 
+    *       Test session cannot be resumed later.
+    *   c) KErrArgument - Parameters passed to engine are invalid.
+    *   d) Others - Other critical that could not be recovered occured during
+    *       test execution.  Test may be resumed later in this case.
+    */
+    virtual void TestExecutionCompletedL( TInt aError ) = 0;
+
+    /**
+    * Create a common Dialog.
+    * Application should create an instance of requested dialog.
+    * For available dialog types, @see DiagCommonDialog.h
+    * 
+    * @param aDialogType - Type of dialog to create.
+    * @param aData - Initialization parameter. Ownership is passed to engine.
+    * @return a pointer to newly created dialog. Ownership is passed to caller.
+    */
+    virtual CAknDialog* CreateCommonDialogLC( TDiagCommonDialog aDialogType,
+                                              TAny* aInitData ) = 0;
+
+    /**
+    * Execute a command from plug-in. Parameters are identical to 
+    * MDiagEngineCommon::ExecuteAppCommandL(). 
+    * @see MDiagEngineCommon::ExecuteAppCommandL()
+    * @see TDiagAppCommand
+    */
+    virtual void ExecuteAppCommandL( TDiagAppCommand aCommand, 
+                                     TAny* aParam1,
+                                     TAny* aParam2 ) = 0;
+    };
+
+
+#endif // DIAGENGINEOBSERVER_H
+
+// End of File
+