/*

* Copyright (c) 2002-2008 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:  CCFIfClause class implementation.

*

*/

// INCLUDE FILES

#include "cfifclause.h"

#include "cfscriptaction.h"

#include "cfbasicoptrace.h"

#include <gmxmlnode.h>

// CONSTANTS

_LIT( KScriptIfName16,        "if"        );

_LIT( KScriptActionsName16,   "actions"   );

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

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

// CCFIfClause::CCFIfClause

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

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

//

CCFIfClause::CCFIfClause( MCFOperationServices& aServices,

    CCFOperationNode* aParent )

    :   CCFClauseNode( aServices, aParent )

    {

    FUNC_LOG;

    }

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

// CCFIfClause::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CCFIfClause::ConstructL()

    {

    FUNC_LOG;

    }

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

// CCFIfClause::NewL

// Two-phased constructor.

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

//

CCFIfClause* CCFIfClause::NewL( MCFOperationServices& aServices,

    CCFOperationNode* aParent )

    {

    FUNC_LOG;

    CCFIfClause* self = NewLC( aServices, aParent );

    CleanupStack::Pop( self );

    return self;

    }

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

// CCFIfClause::NewLC

// Two-phased constructor.

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

//

CCFIfClause* CCFIfClause::NewLC( MCFOperationServices& aServices,

    CCFOperationNode* aParent )

    {

    FUNC_LOG;

    CCFIfClause* self = new( ELeave ) CCFIfClause( aServices, aParent );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CCFIfClause::ParseL

// Construction with parsing from a DOM node.

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

//

CCFIfClause* CCFIfClause::ParseL( MCFOperationServices& aServices,

    CCFOperationNode* aParent,

    CMDXMLNode& aNode )

    {

    FUNC_LOG;

    if ( aNode.NodeName().CompareF( KScriptIfName16 ) != 0 )

        {

        return NULL; // Cannot create if clause from the given node.

        }

    CCFIfClause* self = NewLC( aServices, aParent );    // CLEANUP<< self

    // Parse children.

    TBool unsupportedNode( EFalse );

    TBool actionsParsed( EFalse );

    CMDXMLNode* child = aNode.FirstChild();

    while ( child )

        {

        if ( child->NodeType() == CMDXMLNode::EElementNode )

            {

            if ( child->NodeName().CompareF( KScriptActionsName16 ) == 0 )

                {

                if ( actionsParsed )

                    {

                    INFO( "CCFIfClause::ParseL - Redefinition not allowed, actions already parsed" );

                    unsupportedNode = ETrue;

                    break;

                    }

                self->ParseActionsL( *child, self->iActions );

                actionsParsed = ETrue;

                }

            else

                {

                if ( self->iChild )

                    {

                    TPtrC nodeName( child->NodeName() );

                    INFO_1( "CCFIfClause::ParseL - One child operation is allowed. [%S] is not supported",

                            &nodeName );

                    unsupportedNode = ETrue; // Already parsed the child.

                    break;

                    }

                CCFOperationNode* op = self->iServices.ParseL( self, *child );

                if ( op )

                    {

                    self->iChild = op;

                    }

                else

                    {

                    TPtrC nodeName( child->NodeName() );

                    INFO_1( "CCFIfClause::ParseL - Unsupported node [%S]",

                            &nodeName );

                    unsupportedNode = ETrue;

                    break;

                    }

                }

            }

        else if ( child->NodeType() != CMDXMLNode::ECommentNode )

            {

            TPtrC nodeName( child->NodeName() );

            INFO_1( "CCFIfClause::ParseL - Unsupported node [%S]",

                    &nodeName );

            unsupportedNode = ETrue;

            break;

            }

        child = child->NextSibling();

        }

    CleanupStack::Pop( self );                          // CLEANUP>> self

    if ( !self->iChild || unsupportedNode )

        {

        INFO( "CCFIfClause::ParseL - No child operation defined or unsupported node" );

        delete self; // Discard unsupported if clause.

        self = NULL;

        }

    CREATE_DOM_INFO( self, aNode );

    return self;

    }

// Destructor

CCFIfClause::~CCFIfClause()

    {

    FUNC_LOG;

    delete iChild;

    iActions.ResetAndDestroy();

    }

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

// CCFIfClause::FireActionsL

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

//

void CCFIfClause::FireActionsL()

    {

    FUNC_LOG;

    ACTION_INFO_2( "Firing [%d] IF-actions for script ID=[%d]",

            iActions.Count(),

            iServices.ScriptId() );

    for ( TInt i = 0; i < iActions.Count(); ++i )

        {

        iActions[ i ]->ActL();

        }

    }

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

// CCFIfClause::ActivateL

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

//

void CCFIfClause::ActivateL()

    {

    FUNC_LOG;

    if ( iChild )

        {

        iChild->ActivateL();

        }

    }

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

// CCFIfClause::Deactivate

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

//

void CCFIfClause::Deactivate()

    {

    FUNC_LOG;

    if ( iChild )

        {

        iChild->Deactivate();

        }

    }

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

// CCFIfClause::CheckSecurity

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

//

TInt CCFIfClause::CheckSecurity()

    {

    FUNC_LOG;

    TInt err( KErrNone );

    // Check security for context subscriptions.

    if ( iChild )

        {

        err = iChild->CheckSecurity();

        if ( err != KErrNone )

            {

            ERROR( err, "CCFIfClause::CheckSecurity - Context read security check failed!" );

            return err;

            }

        }

    // Check security for actions.

    for ( TInt i = 0; i < iActions.Count(); ++i )

        {

        TSecurityPolicy securityPolicy;

        TInt err = iActions[ i ]->GetSecurityPolicy( securityPolicy );

        if ( err != KErrNone )

            {

            ERROR( err, "CCFIfClause::CheckSecurity - Getting action security policy failed!" );

            return err;

            }

        err = iServices.CheckScriptOwnerAccess( securityPolicy );

        if ( err != KErrNone )

            {

            ERROR( err, "CCFIfClause::CheckSecurity - Checking action security policy failed!" );

            return err;

            }

        }

    return KErrNone;

    }

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

// CCFIfClause::Evaluate

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

//

void CCFIfClause::Evaluate()

    {

    FUNC_LOG;

    DOM_INFO( "CCFIfClause::Evaluate" );

    if ( iChild )

        {

        // If clause has a root condition.

        TCFConditionValue newValue = iChild->Value();

        if ( newValue != Value() )

            {

            INFO_1( "CCFIfClause::Evaluate - Value changed to (-1=undefined, 0=false, 1=true): %d", newValue );

            iValue = newValue;

            if ( iParent )

                {

                iParent->Evaluate();

                }

            }

        else

            {

            INFO_1( "CCFIfClause::Evaluate - Value still (-1=undefined, 0=false, 1=true): %d", newValue );

            }

        }

    }

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

// CCFIfClause::Cleanup

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

//

void CCFIfClause::Cleanup()

    {

    FUNC_LOG;

    if ( iChild )

        {

        iChild->Cleanup();

        }

    }