/*

* Copyright (c) 2008 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:  ECom plugin install/uninstall/version listener

*

*/

#ifndef C_CHFPATECOMLISTEN_H

#define C_CHFPATECOMLISTEN_H

#include <atext.h>

#include <atextpluginbase.h>

/**

 *  Notification interface class for ECOM plugin interface status changes

 *

 *  @lib HFPatext.lib

 *  @since S60 v5.0

 */

 enum THFPState

    {

    EHFPStateIdle,

    EHFPStateAtCmdHandling,    // ATEXT state for AT command handling

    EHFPStateAtUrcHandling,    // ATEXT state for URC handling

    EHFPStateEcomListening     // ATEXT state for ECOM change listening

    };

NONSHARABLE_CLASS( MHFPAtEcomListen )

    {

public:

    /**

     * Notifies about new plugin installation

     *

     * @since S60 5.0

     * @param aPluginUid UID of installed plugin

     * @return Symbian error code on error, KErrNone otherwise

     */

    virtual TInt NotifyPluginInstallation( TUid& aPluginUid ) = 0;

    /**

     * Notifies about existing plugin uninstallation

     *

     * @since S60 5.0

     * @param aPluginUid UID of uninstalled plugin

     * @return Symbian error code on error, KErrNone otherwise

     */

    virtual TInt NotifyPluginUninstallation( TUid& aPluginUid ) = 0;

    };

/**

 *  Class for ECom plugin install/uninstall/version listener

 *

 *  @lib HFPatext.lib

 *  @since S60 v5.0

 */

NONSHARABLE_CLASS( CHFPAtEcomListen ) : public CActive

    {

public:

    /**

     * Two-phased constructor.

     * @param aAtCmdExt Pointer to AT command extension

     * @param aCallback Callback to mode status change

     * @return Instance of self

     */

	static CHFPAtEcomListen* NewL( RATExt* aAtCmdExt,

                                   MHFPAtEcomListen* aCallback );

    /**

     * Two-phased constructor.

     * @param aAtCmdExt Pointer to AT command extension

     * @param aCallback Callback to mode status change

     * @return Instance of self

     */

    static CHFPAtEcomListen* NewLC( RATExt* aAtCmdExt,

                                    MHFPAtEcomListen* aCallback );

    /**

    * Destructor.

    */

    virtual ~CHFPAtEcomListen();

    /**

     * Resets data to initial values

     *

     * @since S60 5.0

     * @return None

     */

    void ResetData();

    /**

     * Starts waiting for ECom plugin install/uninstall/version status changes

     *

     * @since S60 5.0

     * @return Symbian error code on error, KErrNone otherwise

     */

    TInt IssueRequest();

    /**

     * Stops waiting for Ecom plugin install/uninstall/version status changes

     *

     * @since S60 5.0

     * @return Symbian error code on error, KErrNone otherwise

     */

    TInt Stop();

private:

    CHFPAtEcomListen( RATExt* aAtCmdExt,

                      MHFPAtEcomListen* aCallback );

    void ConstructL();

    /**

     * Initializes this class

     *

     * @since S60 5.0

     * @return None

     */

    void Initialize();

// from base class CActive

    /**

     * From CActive.

     * Gets called when plugin installed, uninstalled or changed

     *

     * @since S60 5.0

     * @return None

     */

    void RunL();

    /**

     * From CActive.

     * Gets called on cancel

     *

     * @since S60 5.0

     * @return None

     */

    void DoCancel();

private:  // data

    /**

     * AT command extension

     * Not own.

     */

    RATExt* iAtCmdExt;

    /**

     * Callback to call when plugin installed, uninstalled or changed

     * Not own.

     */

    MHFPAtEcomListen* iCallback;

    /**

     * Current state of ECom interface listening: active or inactive

     */

    THFPState iEcomListenState;

    /**

     * UID of the installed, uninstalled or changed plugin

     */

    TUid iPluginUid;

    /**

     * Package for plugin UID

     */

    TPckg<TUid> iPluginUidPckg;

    /**

     * Package for ECOM type

     */

    TPckg<TATExtensionEcomType> iEcomTypePckg;

    };

#endif  // C_CHFPATECOMLISTEN_H