upnp/upnpstack/serviceframework/inc/upnpiconcontenthandler.h
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     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 CUpnpIconContentHandler class
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 #ifndef __UPNPICONCONTENTHANDLER_H__
       
    21 #define __UPNPICONCONTENTHANDLER_H__
       
    22 
       
    23 #include <babitflags.h>
       
    24 
       
    25 #include "upnpcontenthandler.h"
       
    26 
       
    27 class CUpnpIcon;
       
    28 
       
    29 using namespace Xml;
       
    30 
       
    31 /**
       
    32 *  This class handles icon subtree of service descriptions
       
    33 *  It extends CUpnpContentHandler class, thus it is subsequent implementation of MContentHandler interface
       
    34 *  It is designed to be used by upnp controler that delegates to it events from xml sax parser   
       
    35 *
       
    36 *  @since Series60 2.6
       
    37 */
       
    38 NONSHARABLE_CLASS( CUpnpIconContentHandler ) : public CUpnpContentHandler
       
    39 {
       
    40 protected: 
       
    41     enum TState
       
    42         { 
       
    43         EInitial,
       
    44         EMimeType, 
       
    45         EWidth, 
       
    46         EHeight,
       
    47         EDepth,
       
    48         EUrl
       
    49         };
       
    50         
       
    51 public:
       
    52     
       
    53     /**
       
    54     * Two-phased constructor
       
    55     * @since Series60 3.2 
       
    56     * @return instance of CUpnpIconContentHandler class
       
    57     */	
       
    58     static CUpnpIconContentHandler* NewL(
       
    59             CUpnpContentHandlersController& aController, CUpnpIcon& aResultIcon );
       
    60     
       
    61     /**
       
    62     * Two-phased constructor. Leaves the object on CleanupStack
       
    63     * @since Series60 3.2 
       
    64     * @return instance of CUpnpIconContentHandler class
       
    65     */	
       
    66     static CUpnpIconContentHandler* NewLC( 
       
    67             CUpnpContentHandlersController& aController, CUpnpIcon& aResultIcon );
       
    68     
       
    69     /**
       
    70     * Destructor of CUpnpIconContentHandler class
       
    71     * @since Series60 3.2     
       
    72     */	
       
    73     virtual ~CUpnpIconContentHandler();
       
    74     
       
    75 public:	// from CUpnpContentHandler
       
    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 	CUpnpIconContentHandler( CUpnpContentHandlersController& aController, 
       
   104 	        CUpnpIcon& aResultIcon );
       
   105 	
       
   106 	/**
       
   107 	* Parses and returns int value stored in descriptor, or leaves with KErrArgument
       
   108 	* if parsing failes.
       
   109 	* @param              aToParse descriptor to parse
       
   110     * @return             parsed value as int
       
   111 	*/
       
   112 	TInt ParseIntL( const TDesC8& aToParse );
       
   113 	
       
   114 private:
       
   115     CUpnpIcon& iResultIcon;
       
   116     TState iCurrentState;
       
   117     TBitFlags8 iFoundTags;
       
   118     
       
   119 };
       
   120 
       
   121 #endif //__UPNPICONCONTENTHANDLER_H__