/*

* 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:  cvimpstuimenuextension.cpp

 *

*/

// INCLUDE FILES

#include <eikenv.h>

#include <coeaui.h>

#include <coemain.h>

#include <barsread.h>

#include <eikmenup.h>

#include "cvimpstuimenuextension.h"

#include "ccommandinfo.h"

#include "servicetabmenucommandinfo.hrh"

// ================= MEMBER FUNCTIONS =======================

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

// CVIMPSTUIMenuExtension::CVIMPSTUIMenuExtension

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

// 

CVIMPSTUIMenuExtension::CVIMPSTUIMenuExtension( )

: iNewCommands( EServiceTabMenuExtensionFirstFreeCommand )

    {

    }

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

// CVIMPSTUIMenuExtension::ConstructL

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

// 

void CVIMPSTUIMenuExtension::ConstructL()

    {   

    LoadPluginL( ); 

    }

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

// CVIMPSTUIMenuExtension::NewL

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

// 

CVIMPSTUIMenuExtension* CVIMPSTUIMenuExtension::NewL( )

    { 

    CVIMPSTUIMenuExtension* self = NewLC(  );

    CleanupStack::Pop(self);

    return self;

    }

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

// CVIMPSTUIMenuExtension::NewLC

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

// 

CVIMPSTUIMenuExtension* CVIMPSTUIMenuExtension::NewLC()

    {

    CVIMPSTUIMenuExtension* self =

        new (ELeave) CVIMPSTUIMenuExtension(  );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CVIMPSTUIMenuExtension::~CVIMPSTUIMenuExtension

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

// 

CVIMPSTUIMenuExtension::~CVIMPSTUIMenuExtension()

    {   

    iCommandIdMap.ResetAndDestroy();

    //iCommandIdMap.Close();

    // Reset and destroy the contents of the owned arrays,

    // this will delete the plugins.

    iPlugins.ResetAndDestroy();

    //iPlugins.Close();

    iAIWCommandMap.ResetAndDestroy();

    // Close the ECOM interface

    REComSession::FinalClose();

    }

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

// CVIMPSTUIMenuExtension::LoadPluginL

// Loads all plugins

// (other items were commented in a header).

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

//

void CVIMPSTUIMenuExtension::LoadPluginL( )

    {

    // plugininfo array, Owned

    RImplInfoPtrArray pluginInfo;

    iPlugins.ResetAndDestroy();

    REComSession::ListImplementationsL( KMenuCustomisationInterfaceUid,pluginInfo );

    TInt pluginCount = pluginInfo.Count();

    for ( TInt pluginIndex(0); pluginIndex < pluginCount; ++pluginIndex )

        {

        TUid pluginUid = pluginInfo[pluginIndex]->ImplementationUid();

        // Creates the plugin and transfers ownership of the services

        // object to the plugin.

        CMenuExtension* plugin = NULL;

        TRAPD(error, plugin = CMenuExtension::CreateImplementationL( pluginUid ));

        if(KErrNone != error)

            {

            // handle the error here.

            }

        else

            {

            //if its here its sure that plugin is not null;

            CleanupStack::PushL( plugin);

            //map the plugin commands to servicetab commands,

            //assings the command maintained in the commandpool,

            //for more details see 

            MapCommandL(*plugin,pluginUid.iUid);

            //add the plugin to the array

            CPluginInfo* newPlugin = new ( ELeave ) CVIMPSTUIMenuExtension::CPluginInfo( plugin, pluginUid);    

            CleanupStack::PushL( newPlugin );

            iPlugins.AppendL( newPlugin );

            CleanupStack::Pop( newPlugin );

            CleanupStack::Pop( plugin );

           }

        }

    pluginInfo.ResetAndDestroy();

    pluginInfo.Close();

    }

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

// CVIMPSTUIMenuExtension::OfferMenuPaneToPluginsL

// Generates the list of active plugins

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

//

void CVIMPSTUIMenuExtension::OfferMenuPaneToPlugins(TInt aPreviousId, CEikMenuPane& aMenuPane,TUint aServiceId)

    {

    iMenuPane = &aMenuPane;

    // Get the number of  plugins

    const TInt count = iPlugins.Count();

    // Loop though all the command handlers, If DynInitMenuPaneL leaves for one plugin, a plugin

    // error message will be displayed and the loop will continue with

    // the next command handler. If none of the plugins leave, there will

    // be only one TRAP used.

    for ( TInt index = 0; index < count; ++index )

        {

        //trap is required if one plugin leaves then it should continue with other plugins.

        TRAPD(error,iPlugins[index]->Plugin().DynInitMenuPaneL( aPreviousId,

                                                             aMenuPane,aServiceId,*this ));

        if(KErrNone != error)

            {

            //display the appropriate error note for leaving;

            }

        }

    }

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

// CVIMPSTUIMenuExtension::OfferHandleCommandToPluginsL

// Generates the list of active plugins

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

//

TBool CVIMPSTUIMenuExtension::OfferHandleCommandToPlugins(TInt aCommandId)

    {

     //Get the number of plugins loaded

     const TInt count = iPlugins.Count();

     TBool retval = EFalse;

     // Loop though all the command handlers, 

     // If HandleCommandL leaves for one plugin, a plugin

     // error message will be displayed and the loop will continue with

     // the next plugin. If none of the plugins leave, there will

     // be only one TRAP used.

     for ( TInt index = 0; index < count; ++index )

         {

         TRAPD( error,retval = iPlugins[index]->Plugin().HandleCommandL( aCommandId ));

         if ( KErrNone != error )

             {

             // Report a problem with plugin.

             }

         }

     return retval;

    }

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

// CVIMPSTUIMenuExtension::CPluginInfo::CPluginInfo(

// C++ constructor

// (other items were commented in a header).

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

//

CVIMPSTUIMenuExtension::CPluginInfo::CPluginInfo( 

                                    CMenuExtension* aPlugin,

                                    TUid aPluginUid )

    : iPlugin( aPlugin ),

      iPluginUid( aPluginUid )

    {

    }

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

// CVIMPSTUIMenuExtension::CPluginInfo::~CPluginInfo(

// C++ destructor

// (other items were commented in a header).

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

//

CVIMPSTUIMenuExtension::CPluginInfo::~CPluginInfo() 

    {

     delete iPlugin;

    }

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

// CVIMPSTUIMenuExtension::CPluginInfo::Plugin

// returns a reference to the plugin

// (other items were commented in a header).

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

//

CMenuExtension& CVIMPSTUIMenuExtension::CPluginInfo::Plugin()

    {

     return *iPlugin;

    }

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

// CVIMPSTUIMenuExtension::MapCommandL

// (other items were commented in a header).

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

// 

void CVIMPSTUIMenuExtension::MapCommandL( CMenuExtension& aMenuExtension, TInt32  aPluginId )

    { 

    TInt res = aMenuExtension.CommandInfoResource();

    if( res != KErrNotFound )

        {

        TResourceReader reader;

        CCoeEnv::Static()->CreateResourceReaderLC( reader, res );

        TInt resCount = reader.ReadInt16();

        for( TInt j = 0; j < resCount; j++ )

            {

            CCommandInfo* commandInfo = NULL;

            commandInfo = CCommandInfo::NewLC( reader,

                                                aPluginId,

                                                iNewCommands );

            User::LeaveIfError( iCommandIdMap.Append( commandInfo ) );

            CleanupStack::Pop(); // commandInfo

            }

        CleanupStack::PopAndDestroy(); // reader                        

        aMenuExtension.RegisterCommandMapper( *this );

        }

    }

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

// CVIMPSTUIMenuExtension::GetNewCommand

// from MComandMapper

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

//

TInt CVIMPSTUIMenuExtension::GetOldCommand( TInt32 aPluginId, TInt aNewCommand,

                                    TInt& aOldCommand ) const

    {

    TInt mapCount = iCommandIdMap.Count();

    TInt err( KErrNotFound );

    //TODO:: optimize searching.

    for( TInt i = 0; i < mapCount && err; i++ )

        {

        CCommandInfo* info = iCommandIdMap[i];

        if( info->PliginId() == aPluginId && info->NewCommandId() == aNewCommand )

            {

            aOldCommand = info->OldCommandId();

            err = KErrNone;

            break;

            }

        }  

    return err;

    }

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

// CVIMPSTUIMenuExtension::GetNewCommand

// from MComandMapper

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

//

TInt CVIMPSTUIMenuExtension::GetNewCommand( TInt32 aPluginId, TInt aOldCommand,

                                    TInt& aNewCommand ) const

    {

    TInt mapCount = iCommandIdMap.Count();

    TInt err( KErrNotFound );

    //TODO:: optimize searching.

    for( TInt i = 0; i < mapCount && err; i++ )

        {

        CCommandInfo* info = iCommandIdMap[i];

        if( info->PliginId() == aPluginId && info->OldCommandId() == aOldCommand )

            {

            aNewCommand = info->NewCommandId();

            err = KErrNone;

            break;

            }

        }   

    return err; 

    }

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

// CVIMPSTUIMenuExtension::AddToAIWCommandMap

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

//

void CVIMPSTUIMenuExtension::AddToAIWCommandMap(TInt aOriginalCommand, TInt aNewCommand)

    {

    TAIWCommandMapTableItem *item = new TAIWCommandMapTableItem();

    item->iOriginalCmd = aOriginalCommand;

    item->iNewCmd = aNewCommand;

    iAIWCommandMap.Append(item);

    }

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

// CVIMPSTUIMenuExtension::GetNewAIWCommand

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

//

TInt CVIMPSTUIMenuExtension::GetNewAIWCommand(TInt aOriginalCommand)

    {

    TInt count = iAIWCommandMap.Count();

    for( TInt i=0 ; i<count ; i++ )

        {

        if(iAIWCommandMap[i]->iOriginalCmd == aOriginalCommand)

            {

            return iAIWCommandMap[i]->iNewCmd;

            }

        }

    return KErrNotFound;

    }

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

// CVIMPSTUIMenuExtension::ResetAIWCommandMap

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

//

void CVIMPSTUIMenuExtension::ResetAIWCommandMap()

    {

    iAIWCommandMap.ResetAndDestroy();

    }

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

// CVIMPSTUIMenuExtension::SetAIWItemDimmed

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

//

void CVIMPSTUIMenuExtension::SetAIWItemDimmed(TInt aCommand, TBool aHide)

    {

    TInt cmd = GetNewAIWCommand(aCommand);

    if(cmd != KErrNotFound)

        iMenuPane->SetItemDimmed(cmd,aHide);

    }

// End of file