/*

* Copyright (c) 2008-2009 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:    SortOrder command handler

*

*/

#include "glxcommandhandlersortorder.h"

#include <data_caging_path_literals.hrh>

#include <glxcommandhandlers.hrh>

#include <glxpanic.h>

#include <glxtracer.h>

#include <glxlog.h>

#include <centralrepository.h>		// For CRepository

#include <mglxmedialist.h>			// For MGlxMediaList

#include <glxsettingsmodel.h>		// For cenrep setting 

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

// Two-phased constructor.

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

//

EXPORT_C CGlxCommandHandlerSortOrder* CGlxCommandHandlerSortOrder::NewL(

        					MGlxMediaListProvider* aMediaListProvider,

							const TUint32 aCRKey)

    {

    CGlxCommandHandlerSortOrder* self = new ( ELeave )

    	CGlxCommandHandlerSortOrder(aMediaListProvider, aCRKey);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CGlxCommandHandlerSortOrder::CGlxCommandHandlerSortOrder(

							MGlxMediaListProvider* aMediaListProvider,

							const TUint32 aCRKey)

    : CGlxMediaListCommandHandler(aMediaListProvider), iKey(aCRKey)

    {

    // Do nothing

    }

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

// Symbian 2nd phase constructor can leave.

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

//

void CGlxCommandHandlerSortOrder::ConstructL()

    {

    TRACER("CGlxCommandHandlerSortOrder::ConstructL");

    // Add supported commands

    GLX_LOG_INFO("CGlxCommandHandlerSortOrder::ConstructL::Add alphabetical sort order command handler");

   	TCommandInfo info( EGlxCmdSortByAlphabetical );

    info.iMinSelectionLength = 1;

    info.iMaxSelectionLength = KMaxTInt;

   	AddCommandL(info);

   	GLX_LOG_INFO("CGlxCommandHandlerSortOrder::ConstructL::Add frequency sort order command handler");

   	TCommandInfo info2( EGlxCmdSortByCount );

    info2.iMinSelectionLength = 1;

    info2.iMaxSelectionLength = KMaxTInt;

   	AddCommandL(info2);

	}

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

// Destructor

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

//

EXPORT_C CGlxCommandHandlerSortOrder::~CGlxCommandHandlerSortOrder()

    {

    // Do nothing

    }

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

// DoExecute - the relevant action for the command id

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

//

TBool CGlxCommandHandlerSortOrder::DoExecuteL(TInt aCommandId,

													MGlxMediaList& aList)

	{

    TRACER("CGlxCommandHandlerSortOrder::DoExecuteL");

    __ASSERT_DEBUG( NULL != &aList, Panic(EGlxPanicIllegalArgument) );

	GLX_LOG_INFO1("CGlxCommandHandlerSortOrder::DoExecuteL::Command Id (%d)",aCommandId);

	TGlxFilterSortOrder newSortOrder = EGlxFilterSortOrderNotUsed;

	TGlxFilterSortDirection newSortDirection = EGlxFilterSortDirectionNotUsed;

    TBool handledCommand = EFalse;

	switch (aCommandId)

		{

        case EGlxCmdSortByAlphabetical:

            {

  			GLX_LOG_INFO("CGlxCommandHandlerSortOrder::DoExecuteL::Sort Alphabetically");

       		newSortOrder = EGlxFilterSortOrderAlphabetical;

       		newSortDirection = EGlxFilterSortDirectionAscending;

       		handledCommand = ETrue;

            break;

            }

        case EGlxCmdSortByCount:

            {

  			GLX_LOG_INFO("CGlxCommandHandlerSortOrder::DoExecuteL::Sort by count");

       		newSortOrder = EGlxFilterSortOrderItemCount;

       		newSortDirection = EGlxFilterSortDirectionDescending;	        		

       		handledCommand = ETrue;

            break;

            }            

        default:

        	{

        	break;

        	}

		}

	// Check if the existing and the new sort order are different, the change the filter in MediaList

	if( newSortOrder != EGlxFilterSortOrderNotUsed )

		{

		GLX_LOG_INFO("CGlxCommandHandlerSortOrder::DoExecuteL::Create a new sort order");

		TGlxFilterProperties filterProperties;

    	filterProperties.iSortOrder = newSortOrder;

    	filterProperties.iSortDirection = newSortDirection;

    	CMPXFilter* newFilter = TGlxFilterFactory::CreateCombinedFilterL(filterProperties, 

    	                                                                    aList.Filter());

    	CleanupStack::PushL(newFilter);

    	aList.SetFilterL(newFilter);

    	// Update central repository with new sort order

    	CGlxSettingsModel::SetValueL(iKey,newSortOrder);

    	CleanupStack::PopAndDestroy(newFilter);

		}

	return handledCommand;

	}

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

// DoIsDisabled

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

//	

TBool CGlxCommandHandlerSortOrder::DoIsDisabled(TInt aCommandId, 

													MGlxMediaList& aList) const

	{

    TRACER("CGlxCommandHandlerSortOrder::DoIsDisabled");

    __ASSERT_DEBUG( NULL != &aList, Panic(EGlxPanicIllegalArgument) );

	// Get the existing filter & try to find out what is the current sort order

	GLX_LOG_INFO("CGlxCommandHandlerSortOrder::DoIsDisabled::Get the existing filter");

    TGlxFilterSortOrder currentSortOrder = CurrentSortOrder(aList);		

	GLX_LOG_INFO1("CGlxCommandHandlerSortOrder::DoIsDisabled::Command Id (%d)",aCommandId);

	TBool disabled = EFalse;

	TInt count(aList.Count());

    switch( aCommandId)

    	{

        case EGlxCmdSortByAlphabetical:

            {

            GLX_LOG_INFO("CGlxCommandHandlerSortOrder::DoIsDisabled::Sort Alphabetically");

            // If the filter is already Alphabetical sort then hide the menu

            if( count )

            	{

            	disabled = ( currentSortOrder == EGlxFilterSortOrderAlphabetical);

            	}

            else

            	{

            	disabled = ETrue; // Menu options should appear only if the list count is non-zero

            	}

            break;

            }

        case EGlxCmdSortByCount:

            {

    		GLX_LOG_INFO("CGlxCommandHandlerSortOrder::DoIsDisabled::Sort by count");

    		// If the filter is already Frequency sort then hide the menu

            if( count )

            	{

            	disabled = ( currentSortOrder == EGlxFilterSortOrderItemCount);

            	}

            else

            	{

            	disabled = ETrue; // Menu options should appear only if the list count is non-zero            	

            	}

            break;

            }            

        default:

        	{

        	break;

        	}

		}

	return disabled;

	}

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

// GetSortOrder

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

//

TGlxFilterSortOrder	CGlxCommandHandlerSortOrder::CurrentSortOrder(MGlxMediaList& aList) const

    {

    TRACER("CGlxCommandHandlerSortOrder::CurrentSortOrder");

    __ASSERT_DEBUG( NULL != &aList, Panic(EGlxPanicIllegalArgument) );

    TGlxFilterSortOrder currentSortOrder = EGlxFilterSortOrderNotUsed;

	CMPXFilter* filter = aList.Filter();

	if ( filter )

		{

		GLX_LOG_INFO("CGlxCommandHandlerSortOrder::DoIsDisabled::Find the existing sort order");

        currentSortOrder = filter->ValueTObjectL<TGlxFilterSortOrder>(KGlxFilterGeneralSortType);

		}

	return currentSortOrder;

    }

//End of file