diff -r 000000000000 -r 2e3d3ce01487 contextframework/cfw/src/basicoperationsplugin/cfandoperation.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/contextframework/cfw/src/basicoperationsplugin/cfandoperation.cpp Tue Feb 02 10:12:00 2010 +0200 @@ -0,0 +1,271 @@ +/* +* 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: Class that defines logical AND operation in an XML tree. +* +*/ + + + +// INCLUDES +#include "cfandoperation.h" +#include "cfbasicoptrace.h" + +#include + +// CONSTANTS +_LIT( KScriptAndName, "and" ); + +// ============================ MEMBER FUNCTIONS =============================== + +// ----------------------------------------------------------------------------- +// CCFAndOperation::CCFAndOperation +// C++ default constructor can NOT contain any code, that might leave. +// ----------------------------------------------------------------------------- +// +CCFAndOperation::CCFAndOperation( MCFOperationServices& aServices, + CCFOperationNode* aParent ) + : CCFOperationNode( aServices, aParent ) + { + FUNC_LOG; + } + +// ----------------------------------------------------------------------------- +// CCFAndOperation::ConstructL +// Symbian 2nd phase constructor can leave. +// ----------------------------------------------------------------------------- +// +void CCFAndOperation::ConstructL() + { + FUNC_LOG; + } + +// ----------------------------------------------------------------------------- +// CCFAndOperation::NewL +// Two-phased constructor. +// ----------------------------------------------------------------------------- +// +CCFAndOperation* CCFAndOperation::NewL( MCFOperationServices& aServices, + CCFOperationNode* aParent ) + { + FUNC_LOG; + + CCFAndOperation* self = NewLC( aServices, aParent ); + CleanupStack::Pop( self ); + return self; + } + +// ----------------------------------------------------------------------------- +// CCFAndOperation::NewLC +// Two-phased constructor that leaves object to the cleanup stack. +// ----------------------------------------------------------------------------- +// +CCFAndOperation* CCFAndOperation::NewLC( MCFOperationServices& aServices, + CCFOperationNode* aParent ) + { + FUNC_LOG; + + CCFAndOperation* self = new( ELeave ) CCFAndOperation( aServices, aParent ); + CleanupStack::PushL( self ); + self->ConstructL(); + return self; + } + +// ----------------------------------------------------------------------------- +// CCFAndOperation::ParseL +// Construction with parsing from a DOM node. +// ----------------------------------------------------------------------------- +// +CCFAndOperation* CCFAndOperation::ParseL( MCFOperationServices& aServices, + CCFOperationNode* aParent, + CMDXMLNode& aNode ) + { + FUNC_LOG; + + if ( aNode.NodeName().CompareF( KScriptAndName ) != 0 ) + { + return NULL; // Cannot create and operation from the given node. + } + + CCFAndOperation* self = NewLC( aServices, aParent ); // CLEANUP<< self + + TBool unsupportedNode( EFalse ); + CMDXMLNode* child = aNode.FirstChild(); + while ( child ) + { + if ( child->NodeType() == CMDXMLNode::EElementNode ) + { + CCFOperationNode* op = self->iServices.ParseL( self, *child ); + if ( op ) + { + self->iChildren.AppendL( op ); + } + else + { + unsupportedNode = ETrue; + break; + } + } + else if ( child->NodeType() != CMDXMLNode::ECommentNode ) + { + unsupportedNode = ETrue; + break; + } + child = child->NextSibling(); + } + + CleanupStack::Pop( self ); // CLEANUP<< self + if ( unsupportedNode || !self->iChildren.Count() ) + { + delete self; // Discard unsupported and operation. + self = NULL; + + if ( unsupportedNode ) + { + TPtrC nodeName( child->NodeName() ); + INFO_1( "CCFAndOperation::ParseL - Unsupported node [%S]", + &nodeName ); + } + else + { + INFO( "CCFAndOperation::ParseL - No children" ); + } + } + + CREATE_DOM_INFO( self, aNode ); + + return self; + } + + +// Destructor +CCFAndOperation::~CCFAndOperation() + { + FUNC_LOG; + + iChildren.ResetAndDestroy(); + } + + +// --------------------------------------------------------------------------- +// CCFAndOperation::ActivateL +// --------------------------------------------------------------------------- +// +void CCFAndOperation::ActivateL() + { + FUNC_LOG; + + for ( TInt i = 0; i < iChildren.Count(); ++i ) + { + iChildren[ i ]->ActivateL(); + } + } + +// --------------------------------------------------------------------------- +// CCFAndOperation::Deactivate +// --------------------------------------------------------------------------- +// +void CCFAndOperation::Deactivate() + { + FUNC_LOG; + + for ( TInt i = 0; i < iChildren.Count(); ++i ) + { + iChildren[ i ]->Deactivate(); + } + } + +// --------------------------------------------------------------------------- +// CCFAndOperation::CheckSecurity +// --------------------------------------------------------------------------- +// +TInt CCFAndOperation::CheckSecurity() + { + FUNC_LOG; + + for ( TInt i = 0; i < iChildren.Count(); ++i ) + { + TInt err = iChildren[ i ]->CheckSecurity(); + if ( err != KErrNone ) + { + return err; + } + } + + return KErrNone; + } + +// ----------------------------------------------------------------------------- +// CCFAndOperation::Evaluate +// ----------------------------------------------------------------------------- +// +void CCFAndOperation::Evaluate() + { + FUNC_LOG; + + DOM_INFO( "CCFAndOperation::Evaluate" ); + + // get the value of the condition + TCFConditionValue newValue = Value(); + TBool branchUndefined = EFalse; + + // iterate through all the children + for ( TInt i = 0; i < iChildren.Count(); ++i ) + { + // get the child's value + newValue = iChildren[ i ]->Value(); + if ( !newValue ) + { + break; + } + else if ( newValue == ECFConditionUndefined ) + { + branchUndefined = ETrue; + } + } + + if ( branchUndefined && newValue == ECFConditionTrue ) + { + newValue = ECFConditionUndefined; + } + + if ( newValue != Value() ) + { + INFO_1( "CCFAndOperation::Evaluate - Value changed to (-1=undefined, 0=false, 1=true): %d", newValue ); + + iValue = newValue; + if ( iParent ) + { + // Recursion here; hopefully tree not deep + iParent->Evaluate(); + } + } + else + { + INFO_1( "CCFAndOperation::Evaluate - Value still (-1=undefined, 0=false, 1=true): %d", newValue ); + } + } + +// ----------------------------------------------------------------------------- +// CCFAndOperation::Cleanup +// ----------------------------------------------------------------------------- +// +void CCFAndOperation::Cleanup() + { + FUNC_LOG; + + for ( TInt i = 0; i < iChildren.Count(); ++i ) + { + iChildren[ i ]->Cleanup(); + } + }