/*

* 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:  Class declaration for CDiagEngine

*

*/

#ifndef DIAGENGINE_H

#define DIAGENGINE_H

// system includes

#include <e32base.h>                // CBase

// user includes.

#include <DiagEngineCommon.h>       // MDiagEngineCommon

// Forward declarations

class MDiagEngineObserver;

class RDiagResultsDatabase;

class CDiagPluginPool;

class CDiagEngineImpl;

/**

*  Diagnostics Framework Engine 

*

*  This class is used by the client to execute tests and load plug-ins.

*

*  @since S60 v5.0

*/

NONSHARABLE_CLASS( CDiagEngine ) : public CBase,

                                   public MDiagEngineCommon

    {

public:

    /**

    * Two-phased constructors. 

    *

    * @param aViewAppUi    View App Ui that is using this engine.

    * @param aObserver     Engine observer.

    * @param aDbSession    Session to RDiagResultDatabase to create record.

    * @param aPluginPool   Initialized plug-in pool that holds plug-ins.

    * @param aDisableDependency    if ETrue, plug-ins should execute

    *                      event if dependencies are not met.

    * @param aExecutionBatch array of plug-ins to execute.

    * @return New instance of CDiagEngine*.

    */

    IMPORT_C static CDiagEngine* NewL( CAknViewAppUi&          aViewAppUi, 

                                       MDiagEngineObserver&    aObserver,

                                       RDiagResultsDatabase&   aDbSession,

                                       CDiagPluginPool&        aPluginPool,

                                       TBool                   aDisableDependency,

                                       const RArray< TUid >&   aExecutionBatch );

    /**

    * Two-phased constructors. This is identical to NewL, except that it will 

    * keep newl instance in clean up stack.

    *

    * @param aViewAppUi    View App Ui that is using this engine.

    * @param aObserver     Engine observer.

    * @param aDbSession    Session to RDiagResultDatabase to create record.

    * @param aPluginPool   Initialized plug-in pool that holds plug-ins.

    * @param aDisableDependency    if ETrue, plug-ins should execute

    *                      event if dependencies are not met.

    * @param aExecutionBatch array of plug-ins to execute.

    * @return New instance of CDiagEngine*.

    */

    IMPORT_C static CDiagEngine* NewLC( CAknViewAppUi&          aViewAppUi, 

                                        MDiagEngineObserver&    aObserver,

                                        RDiagResultsDatabase&   aDbSession,

                                        CDiagPluginPool&        aPluginPool,

                                        TBool                   aDisableDependency,

                                        const RArray< TUid >&   aExecutionBatch );

    /**

    * Two-phased constructors. 

    *

    * @param aViewAppUi    View App Ui that is using this engine.

    * @param aObserver     Engine observer.

    * @param aDbSession    Session to RDiagResultDatabase to create record.

    * @param aPluginPool   Initialized plug-in pool that holds plug-ins.

    * @param aIncompleteRecordUid - Uid to the record to resume.

    *   

    * @return New instance of CDiagEngine*.

    */

    IMPORT_C static CDiagEngine* NewL( CAknViewAppUi&          aViewAppUi, 

                                       MDiagEngineObserver&    aObserver,

                                       RDiagResultsDatabase&   aDbSession,

                                       CDiagPluginPool&        aPluginPool,

                                       TUid                    aIncompleteRecordUid );

    /**

    * Two-phased constructors. This is identical to NewL, except that it will 

    * keep newl instance in clean up stack.

    *

    * @param aViewAppUi    View App Ui that is using this engine.

    * @param aObserver     Engine observer.

    * @param aDbSession    Session to RDiagResultDatabase to create record.

    * @param aPluginPool   Initialized plug-in pool that holds plug-ins.

    * @param aIncompleteRecordUid - Uid to the record to resume.

    *

    * @return New instance of CDiagEngine*.

    */

    IMPORT_C static CDiagEngine* NewLC( CAknViewAppUi&          aViewAppUi, 

                                        MDiagEngineObserver&    aObserver,

                                        RDiagResultsDatabase&   aDbSession,

                                        CDiagPluginPool&        aPluginPool,

                                        TUid                    aIncompleteRecordUid );

    /**

    * Destructor.

    */

    virtual ~CDiagEngine();

    /**

    * Execute tests. This is a asynchronous method. 

    * First, execution plan is sent via MDiagEngineObserver::TestExecutionBeginL(). 

    * Then, during the execution, MDiagEngineObserver::TestExecutionProgressL() 

    * may be called multiple times to notify execution progress.  

    * When execution is completed, 

    * MDiagEngineObserver::TestExecutionCompletedL() is called.

    */

    IMPORT_C void ExecuteL();

    /**

    * Set custom execution parameter.

    *

    * @param aCustomParams - Custom data. Owership is not transefrred

    *   so, the client must delete it once test is completed.

    *   Desipte it being a pointer, ownership cannot be transferred 

    *   because engine does not know the type of pointer. 

    */

    IMPORT_C void SetCustomParam( TAny* aCustomParams );

    /**

    * Suspend execution.  This can be used to suspend test execution.

    * If currently executing test is suspendable, it will be suspended and resumed.

    * Otherwise, it will be stopped. When CDiagEngine::ResumeL is called, 

    * the stopped test will be restarted from the beginning. Already executed

    * tests are not affected. 

    * 

    * After engine is suspended, MDiagEngineObserver::TestExecutionSuspendedL() is called.

    *

    */

    IMPORT_C void SuspendL();

    /**

    * Resume suspended execution. This function can be used to resume 

    * previously suspended execution. If execution was suspended on a test

    * that cannot be suspended, the test will restart. Previously executed tests

    * will not be re-run. Also, dependent tests will not be re-run.  If 

    * the suspended test fails to resume (e.g. leaves), it will be marked as

    * failure.

    *

    * After engine is resumed, MDiagEngineObserver::TestExecutionResumedL() is called.

    */

    IMPORT_C void ResumeL();

    // ADO & Platformization Changes

    ///@@@KSR: changes for Codescanner error val = High

    //IMPORT_C TBool GetPluginDependency();

    IMPORT_C TBool GetPluginDependencyL();

public: // from MDiagEngineCommon

    /**

    * Returns current execution plan.

    * @see MDiagEngineCommon::ExecutionPlanL

    */

    virtual const MDiagPluginExecPlan& ExecutionPlanL() const;

    /**

    * Stop current execution of tests.

    * @see MDiagEngineCommon::ExecutionStopL

    */

    virtual void ExecutionStopL( TCancelMode aCancelMode );

    /**

    * Resets test execution watchdog timer.

    * @see MDiagEngineCommon::ResetWatchdog

    */

    virtual void ResetWatchdog();

    /**

    * Resets test execution watchdog timer.

    * @see MDiagEngineCommon::ResetWatchdog

    */

    virtual void ResetWatchdog( TDiagEngineWatchdogTypes aWatchdogType );

    /**

    * Resets test execution watchdog timer.

    * @see MDiagEngineCommon::ResetWatchdog

    */

    virtual void ResetWatchdog( TTimeIntervalMicroSeconds32 aExpectedTimeToComplete );

    /**

    * Get App Ui reference that launched Diagnostics Engine.

    * @see MDiagEngineCommon::ViewAppUi

    */

    virtual CAknViewAppUi& ViewAppUi();

    /**

    * Get App Ui reference that launched Diagnostics Engine.

    * @see MDiagEngineCommon::ViewAppUi

    */

    virtual const CAknViewAppUi& ViewAppUi() const;

    /**

    * Get Database Subsession for record open for writing.

    * @see MDiagEngineCommon::DbRecord

    */

    virtual RDiagResultsDatabaseRecord& DbRecord();

    /**

    * Get Database Subsession for record open for writing.

    * @see MDiagEngineCommon::DbRecord

    */

    virtual const RDiagResultsDatabaseRecord& DbRecord() const;

    /**

    * Get reference to Plugin Pool

    * @see MDiagEngineCommon::PluginPool

    */

    virtual CDiagPluginPool& PluginPool();

    /**

    * Get reference to Plugin Pool

    * @see MDiagEngineCommon::PluginPool

    */

    virtual const CDiagPluginPool& PluginPool() const;

    /**

    * Add a text to configuraiton list option. 

    * @see MDiagEngineCommon::AddToConfigListL

    */

    virtual void AddToConfigListL( TConfigListType aListType, const TDesC& aText );

    /**

    * Remove a text from configuration list.

    * @see MDiagEngineCommon::RemoveFromConfigListL

    */

    virtual void RemoveFromConfigListL( TConfigListType aListType, const TDesC& aText );

    /**

    * Create a common dialog.

    * @see MDiagEngineCommon::CreateCommonDialogL

    */

    virtual CAknDialog* CreateCommonDialogLC( TDiagCommonDialog aDialogType,

                                              TAny* aInitData );

    /**

    * Stop watchdog activity temporarily.

    * @see MDiagEngineCommon::StopWatchdogTemporarily

    */

    virtual void StopWatchdogTemporarily();

    /**

    * Check if current engine is being executed with dependency disabled.

    *  @see MDiagEngineCommon::IsDependencyDisabled

    */

    virtual TBool IsDependencyDisabled() const;

    /**

    * Get custom param

    *  @see MDiagEngineCommon::CustomParam

    */

    virtual TAny* CustomParam() const;

    /**

    * Execute an application command. 

    *   @see MDiagEngineCommon::ExecuteAppCommandL

    */

    virtual void ExecuteAppCommandL( TDiagAppCommand aCommand, 

                                     TAny* aParam1,

                                     TAny* aParam2 );

private:    // private data

    CDiagEngineImpl* iEngineImpl;

    };

#endif // DIAGENGINE_H

// End of File