/*

* 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:  Mail icon off/on handling. Uses parts from previous Bridge

*                 implementation.

*

*/

#include "emailtrace.h"

#include <e32property.h>

#include "fsmailiconhandler.h"

#include "fsnotificationhandlertimer.h"

// Define startup Max retry counter for trying to set icon property

static const TInt KMaxIconRetry = 5;

// Timeout value for retrying to set the icon property again

static const TInt KIconRetryTimeout = 10*1000*1000;

CFSMailIconHandler* CFSMailIconHandler::NewL(

    MFSNotificationHandlerMgr& aOwner )

    {

    FUNC_LOG;

	CFSMailIconHandler* self =

	    new (ELeave) CFSMailIconHandler( aOwner );

	CleanupStack::PushL( self );

	self->ConstructL();

	CleanupStack::Pop( self );

	return self;

    }

CFSMailIconHandler::CFSMailIconHandler(

    MFSNotificationHandlerMgr& aOwner ) :

    CFSNotificationHandlerBase( aOwner ),

    iState( EStarting ),

    iRetryCount( 0 )

    {

    FUNC_LOG;

    }

void CFSMailIconHandler::ConstructL()

    {

    FUNC_LOG;

    CFSNotificationHandlerBase::ConstructL();

    iTimer = CFSNotificationHandlerTimer::NewL( *this );

    // Initialize

    TimerCallBackL( KErrNone );

    }

CFSMailIconHandler::~CFSMailIconHandler()

    {

    FUNC_LOG;

    SetObserving( EFalse );

    delete iTimer;

    iTimer = NULL;

    }

// ---------------------------------------------------------------------------

// At startup this function will try up to KMaxIconRetry times

// to set the inital Icon property. If the property still fails to be set, we will

// assume that the Icon is not supported by the hardware, and we won't continue.

// ---------------------------------------------------------------------------

//

void CFSMailIconHandler::TimerCallBackL( TInt aError )

    {

    FUNC_LOG;

    // Active object request complete handler

	if ( aError == KErrNone )

	    {

        switch ( iState )

            {

            case EStarting:

                {

                TInt ret( KErrNone );

                ret = TestIcon();

    			if ( KErrNone != ret )

        			{

    		 		// Setting Icon Failed

    		 		iRetryCount++;

    		 		if ( iRetryCount > KMaxIconRetry )

        		 		{

    			 		// Give up, assume Email Icon is Not supported

    			 		// Message store will not be observed for changes

    			 		ERROR_1( ret, "CFSMailIconHandler startup failed %d", ret );

    		 			iState = EFailed;

        		 		}

    		 		else

        		 		{

    		 		    // Start a timer to wait 10 seconds

    					iTimer->After( KIconRetryTimeout );

        		 		}

        		    }

    			else 

        			{

        			SetObserving( ETrue );

    				iState = EStarted;

        			}

                break;

                }

            case EStarted:

                {

    			// Unexpected Icon started state

                break;

                }

            default:

                {

                break;

                }

            }

    	}

        else 

    	{

        // Error

    	}

    }

// ---------------------------------------------------------------------------

// HandleEvent is implemented also here because we need to check the

// Home Screen status.

// ---------------------------------------------------------------------------

//

void CFSMailIconHandler::HandleEventL(

    TFSMailEvent aEvent,

    TFSMailMsgId aMailbox,

    TAny* aParam1,

    TAny* aParam2,

    TAny* aParam3 )

    {

    FUNC_LOG;

    // Event is checked also in CFSNotificationHandlerBase::HandleEventL.

    // Implementation could be improved so that there would be no need

    // for doing it twice. Now it must be done here as we don't want

    // to check HS if this would not be a new mail. Also

    // CFSNotificationHandlerBase::HandleEventL needs the check the event

    // because CFSNotificationHandlerBase::HandleEventL is used in some

    // cases alone. (without the kind of prechecking that this function

    // does)

    if ( aEvent == TFSEventNewMail )

        {

        CFSNotificationHandlerBase::HandleEventL( aEvent,

                                                  aMailbox,

                                                  aParam1,

                                                  aParam2,

                                                  aParam3 );        

        }

    }

TInt CFSMailIconHandler::SetProperty( TUid aCategory, TUint aKey, TInt aValue )

    {

    FUNC_LOG;

	RProperty property;

	TInt ret = property.Attach( aCategory, aKey );

	if ( KErrNone == ret )

	    {

   		ret = property.Set( aValue );

	    }

    ERROR_2( ret, "Error %d in setting property %d", ret, aKey )

	property.Close();

    return ret;

    }

TInt CFSMailIconHandler::TestIcon()

    {

    FUNC_LOG;

    RProperty property;

	TInt ret = property.Attach( KPSUidCoreApplicationUIs, 

	    KCoreAppUIsNewEmailStatus );

    // Intention here is just to test the icon by first readin it and then

    // writing the same value back. Notice that it might be possible that 

    // something has turned the icon off in between the reading and writing.

    // If thisproves to be a problem then change this.

	if ( KErrNone == ret )

	    {	    

	    TInt currentValue( 0 );

	    ret = property.Get( currentValue );

	    if ( KErrNone == ret )

	        {

   		    ret = property.Set( currentValue );

	        }

	    }

	property.Close();

    return ret;

    }

void CFSMailIconHandler::TurnNotificationOn()

    {

    FUNC_LOG;

    }

void CFSMailIconHandler::TurnNotificationOff()

    {

    FUNC_LOG;

    }