/*

* Copyright (c) 2007-2008 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:  

*

*/

#include "hnmdmenuitem.h"

#include "hnglobals.h"

#include "hnconvutils.h"

#include "hnstringhandler.h"

#include "hnconditioninterface.h"

#include "hnmdeventmappingelement.h"

#include "hnmdevent.h"

#include "hnmenuitemmodel.h"

#include "hnconditionfactory.h"

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

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

// 

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

//

void CHnMdMenuItem::AppendChildItemL( CHnMdMenuItem* aMenuItem )

    {

    iChildren.AppendL( aMenuItem );

    }

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

// 

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

//

void CHnMdMenuItem::EvaluateL( CHnMenuItemModel* aMenuModel,

        const CLiwGenericParamList& aQueriesResultsList, TInt aPos )

    {

    for ( TInt i( 0 ); i < iChildren.Count(); i++ )

      {

      CHnMdMenuItem* mdMenu = iChildren[ i ];

      if ( mdMenu->IsValidL( aQueriesResultsList, aPos ) )

          {

          CHnMenuItemModel* menu = CHnMenuItemModel::NewL( mdMenu->NameL() );

          mdMenu->EvaluateL( menu, aQueriesResultsList, aPos );

          aMenuModel->AppendChildMenuL( menu );

          }

      }

    aMenuModel->SetCommand( iEvent );

    aMenuModel->SetPosition( iPosition );

    aMenuModel->SetItemSpecific( iSpecific );

    }

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

// ConstructL takes as an argument an item xml element. It iterates through 

// item elements in order to find menuitems.

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

//

void CHnMdMenuItem::CreatePropertiesL( TXmlEngElement aElement,

                                 THnMdCommonPointers* /* aCmnPtrs */ )

    {

    iSpecific = !aElement.Name().Compare( KMenuItemSpecificElementName8 );

    // name

    HBufC* name = HnConvUtils::Str8ToStrLC(

            aElement.AttributeValueL( KName8 ) );

    iName.Assign(name);

    CleanupStack::Pop( name );

    // position

    TPtrC8 pos = aElement.AttributeValueL( KPositionAttrName8 );

    TLex8 lexPosition ( pos );

    User::LeaveIfError( lexPosition.Val( iPosition ) );

    // event

    if( aElement.AttributeValueL( KEventAttrName8 ).Length() && 

                                            !aElement.HasChildNodes() )

        { // there might not be the event attribute - submenues

        TPtrC8 event = aElement.AttributeValueL( KEventAttrName8 );

        TLex8 lex( event );

        User::LeaveIfError( lex.Val( iEvent ) );

        }

    // condition

    if( aElement.AttributeValueL( KMenuConditionAttrName8 ).Length() )

        {

        iCondition = HnConditionFactory::NewL(  

          aElement.AttributeNodeL( KMenuConditionAttrName8 ) );

        }

    }

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

// 

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

//

void CHnMdMenuItem::CreateChildrenL( TXmlEngElement aElement,

                                        THnMdCommonPointers* aCmnPtrs )

    { 

    RXmlEngNodeList< TXmlEngElement > children;

    CleanupClosePushL( children );

    aElement.GetChildElements( children );

    TInt count = children.Count();

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

        {

        TXmlEngElement child = children.Next();

        if ( !child.Name().Compare( KMenuItemElementName8 ) 

        		|| !child.Name().Compare( KMenuItemSpecificElementName8 ) )

            {

            AppendChildItemL( CHnMdMenuItem::NewL( child, aCmnPtrs ) );

            }

        }

    CleanupStack::PopAndDestroy( &children );

    }

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

// ConstructL takes as an argument an item xml element. It iterates through 

// item elements in order to find menuitems.

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

//

void CHnMdMenuItem::ConstructL( TXmlEngElement aElement,

                                THnMdCommonPointers* aCmnPtrs )

    {

    if ( !aElement.Name().Compare( KMenuItemElementName8 )

    		|| !aElement.Name().Compare( KMenuItemSpecificElementName8 ) )

        { // this is an ordinary menu item

        CreatePropertiesL( aElement, aCmnPtrs );

        CreateChildrenL( aElement, aCmnPtrs ); // in case there are subitems

        }

    else

        { // this is the root level

        CreateChildrenL( aElement, aCmnPtrs );

        }

    }

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

// 

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

//

CHnMdMenuItem* CHnMdMenuItem::NewL( TXmlEngElement aElement,

        THnMdCommonPointers* aCmnPtrs )

    {

    CHnMdMenuItem* self = CHnMdMenuItem::NewLC( aElement, aCmnPtrs );

    CleanupStack::Pop( self );

    return self;

    }

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

// 

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

//

CHnMdMenuItem* CHnMdMenuItem::NewLC( TXmlEngElement aElement, 

        THnMdCommonPointers* aCmnPtrs )

    {

    CHnMdMenuItem* self = new( ELeave ) CHnMdMenuItem;

    CleanupStack::PushL( self );

    self->ConstructL( aElement, aCmnPtrs );

    return self;

    }

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

// 

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

//

CHnMdMenuItem::CHnMdMenuItem()

    {

    }

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

// 

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

//

CHnMdMenuItem::~CHnMdMenuItem()

    {

    iName.Close();

    iChildren.ResetAndDestroy();

    iNameValueCache.Close();

    delete iCondition;

    }

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

// 

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

//

const TDesC& CHnMdMenuItem::NameL() 

    {

    iNameValueCache.Close();

    HnStringHandler::LocaliseL( iNameValueCache, iName, NULL /*common params*/);

    return iNameValueCache;

    }

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

// 

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

//

TBool CHnMdMenuItem::IsValidL( const CLiwGenericParamList& aQueryResults, 

        TInt aPos )    

    {

    TBool ret( EFalse );

    if( !iCondition || iCondition->ResultL( aQueryResults, aPos ) )

        {

        ret = ETrue;

        }

    return ret;

    }