1 /** @file

     2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies  this distribution, and is available 

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Declares the CUpnpAllowedValueRangeContentHandler class

    15  *

    16 */

    17 

    18 

    19 #ifndef __UPNPALLOWEDVALUERANGECONTENTHANDLER_H__

    20 #define __UPNPALLOWEDVALUERANGECONTENTHANDLER_H__

    21 

    22 #include <babitflags.h>

    23 #include "upnpcontenthandler.h"

    24 

    25 class CUpnpStateVariable;

    26 

    27 using namespace Xml;

    28 

    29 /**

    30  *  This class handles allowedvaluerange subtree of service descriptions

    31  *  It extends CUpnpContentHandler class, thus it is subsequent 

    32  *  implementation of MContentHandler interface. It is designed to be 

    33  *  used by upnp controler that delegates to it events from xml sax parser   

    34  *

    35  *  @since Series60 2.6

    36  */

    37 NONSHARABLE_CLASS( CUpnpAllowedValueRangeContentHandler ) : 

    38     public CUpnpContentHandler

    39     {

    40 protected:

    41     enum TState

    42         {

    43         EInitial,

    44         EMinimum,

    45         EMaximum,

    46         EStep

    47         };

    48 

    49 public:

    50 

    51     /**

    52      * Two-phased constructor

    53      * @since Series60 3.2 

    54      * @return instance of CUpnpAllowedValueRangeContentHandler class

    55      */

    56     static CUpnpAllowedValueRangeContentHandler* NewL(

    57             CUpnpContentHandlersController& aController, 

    58             CUpnpStateVariable& aResultAction );

    59 

    60     /**

    61      * Two-phased constructor. Leaves the object on CleanupStack

    62      * @since Series60 3.2 

    63      * @return instance of CUpnpAllowedValueRangeContentHandler class

    64      */

    65     static CUpnpAllowedValueRangeContentHandler* NewLC(

    66             CUpnpContentHandlersController& aController, 

    67             CUpnpStateVariable& aResultAction );

    68 

    69     /**

    70      * Destructor of CUpnpAllowedValueRangeContentHandler class

    71      * @since Series60 3.2     

    72      */

    73     virtual ~CUpnpAllowedValueRangeContentHandler();

    74 

    75 public: // from MContentHandler

    76 

    77     /**

    78      * This method is a callback to indicate an element has been parsed.

    79      * @param				aElement is a handle to the element's details.

    80      * @param				aAttributes contains the attributes for the element.

    81      */

    82     virtual void OnStartElementL( const RTagInfo& aElement, 

    83         const RAttributeArray& aAttributes );

    84 

    85     /**

    86      * This method is a callback to indicate the end of the element has been reached.

    87      * @param              aElement is a handle to the element's details.

    88      */

    89     virtual void OnEndElementL( const RTagInfo& aElement );

    90 

    91     /**

    92      * This method is a callback that sends the content of the element.

    93      * @param              aBytes is the raw content data for the element in one chunk

    94      */

    95     virtual void OnContentL( const TDesC8& aBytes );

    96 

    97 protected:

    98 

    99     /**

   100      * Default C++ constructor 

   101      * @since Series60 3.2     

   102      */

   103     CUpnpAllowedValueRangeContentHandler( CUpnpContentHandlersController& aController,

   104             CUpnpStateVariable& aResultAction );

   105 

   106 private:

   107     CUpnpStateVariable& iResultStateVariable;

   108     TState iCurrentState;

   109     TBitFlags8 iFoundTags;

   110 

   111     };

   112 

   113 #endif //__UPNPALLOWEDVALUERANGECONTENTHANDLER_H__