/*

* 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:  The parser for the OOM configuration file.

*

*/

#ifndef OOMCONFIGPARSER_H_

#define OOMCONFIGPARSER_H_

#include <xml/contenthandler.h>

using namespace Xml;

class COomConfig;

class COomRunPluginConfig;

/**

 *  Parser for the Oom Monitor configuration file

 *

 *  @lib oommonitor.lib

 *  @since S60 v5.0

 */

NONSHARABLE_CLASS(COomConfigParser) : public CBase, public MContentHandler 

    {

public:

    COomConfigParser(COomConfig& aConfig, RFs& aFs);

    void ParseL();

    // From MContent handler

    virtual void OnStartDocumentL(const RDocumentParameters& aDocParam, TInt aErrorCode);

    virtual void OnEndDocumentL(TInt aErrorCode);

    virtual void OnStartElementL(const RTagInfo& aElement, const RAttributeArray& aAttributes, 

                                 TInt aErrorCode);

    virtual void OnEndElementL(const RTagInfo& aElement, TInt aErrorCode);

    virtual void OnContentL(const TDesC8& aBytes, TInt aErrorCode);

    virtual void OnStartPrefixMappingL(const RString& aPrefix, const RString& aUri, 

                                       TInt aErrorCode);

    virtual void OnEndPrefixMappingL(const RString& aPrefix, TInt aErrorCode);

    virtual void OnIgnorableWhiteSpaceL(const TDesC8& aBytes, TInt aErrorCode);

    virtual void OnSkippedEntityL(const RString& aName, TInt aErrorCode);

    virtual void OnProcessingInstructionL(const TDesC8& aTarget, const TDesC8& aData, 

                                          TInt aErrorCode);

    virtual void OnError(TInt aErrorCode);

    virtual TAny* GetExtendedInterface(const TInt32 aUid);

private:

    void ConfigError(TInt aError);

    void StartElementL(const TDesC8& aLocalName, 

                          const RAttributeArray& aAttributes);

    void SetGlobalSettings(const RAttributeArray& aAttributes);

    void SetForceCheckConfigL(const RAttributeArray& aAttributes);

    void SetAppConfigL(const RAttributeArray& aAttributes);

    void SetCloseAppConfigL(const RAttributeArray& aAttributes);

    void SetAppCloseIdlePriorityConfigL(const RAttributeArray& aAttributes);

    void SetForegroundAppPriorityL(const RAttributeArray& aAttributes);

    void SetSystemPluginConfigL(const RAttributeArray& aAttributes);

    void SetAppPluginConfigL(const RAttributeArray& aAttributes);

    void SetPluginIdlePriorityL(const RAttributeArray& aAttributes);

    void SetPluginForegroundAppPriorityL(const RAttributeArray& aAttributes);

    TInt GetValueFromAttributeList(const RAttributeArray& aAttributes, const TDesC8& aName, TPtrC8& aValue);

    TInt GetValueFromHexAttributeList(const RAttributeArray& aAttributes, const TDesC8& aName, TUint& aValue);

    TInt GetValueFromDecimalAttributeList(const RAttributeArray& aAttributes, const TDesC8& aName, TUint& aValue);

    TInt GetValueFromDecimalAttributeList(const RAttributeArray& aAttributes, const TDesC8& aName, TInt& aValue);

    TInt GetValueFromBooleanAttributeList(const RAttributeArray& aAttributes, const TDesC8& aName, TBool& aValue);

    void SetPluginSyncMode(const RAttributeArray& aAttributes, COomRunPluginConfig& aRunPluginConfig);

    enum TOomParsingState

        {

        EOomParsingStateNone,

        EOomParsingStateRoot,

        EOomParsingStateGlobalSettings,

        EOomParsingStateAppSettings,

        EOomParsingStateAppCloseSettings,

        EOomParsingStateSystemPluginSettings,

        EOomParsingStateAppPluginSettings

        };    

    // Check that the current state is as expected

    // If not then the specified config error is generated

    void CheckState(TOomParsingState aExpectedState, TInt aError);

    // Check that the current state is as expected

    // If not then the specified config error is generated

    // This version checks to ensure that the current state matches either of the passed in states

    void CheckState(TOomParsingState aExpectedState1, TOomParsingState aExpectedState2, TInt aError);

    COomConfig& iConfig;

    RFs& iFs;

    void ChangeState(TOomParsingState aState);    

    TOomParsingState iState;

    TUint iParentUid;

    TUint iParentTargetApp;

    };

#endif /*OOMCONFIGPARSER_H_*/