webengine/wmlengine/src/xhtml/include/nw_xhtml_elementhandler.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 19 Mar 2010 09:52:28 +0200
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permissions -rw-r--r--
Revision: 201006 Kit: 201011
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/*
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* Copyright (c) 2000 - 2001 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*
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*/
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#ifndef NW_XHTML_ELEMENTHANDLER_H
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#define NW_XHTML_ELEMENTHANDLER_H
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#include "nw_object_base.h"
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#include "nw_lmgr_containerbox.h"
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#include "nw_lmgr_activebox.h"
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#include "nw_dom_node.h"
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#include "nw_lmgr_cssproperties.h"
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#include "nw_xhtml_xhtml_1_0_tokens.h"
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#include "BrsrStatusCodes.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/* ------------------------------------------------------------------------- *
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   forward declarations
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 * ------------------------------------------------------------------------- */
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typedef struct NW_XHTML_ElementHandler_Class_s NW_XHTML_ElementHandler_Class_t;
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typedef struct NW_XHTML_ElementHandler_s NW_XHTML_ElementHandler_t;
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typedef struct NW_XHTML_ContentHandler_s NW_XHTML_ContentHandler_t;
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/* ------------------------------------------------------------------------- *
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   method prototypes
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 * ------------------------------------------------------------------------- */
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typedef
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TBrowserStatusCode
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(*NW_XHTML_ElementHandler_Initialize_t) (const NW_XHTML_ElementHandler_t* elementHandler,
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                                         NW_XHTML_ContentHandler_t* contentHandler,
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                                         NW_DOM_ElementNode_t* elementNode);
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typedef
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TBrowserStatusCode
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(*NW_XHTML_ElementHandler_CreateBoxTree_t) (const NW_XHTML_ElementHandler_t* elementHandler,
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                                            NW_XHTML_ContentHandler_t* contentHandler,
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                                            NW_DOM_ElementNode_t* elementNode,
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                                            NW_LMgr_ContainerBox_t* parentBox);
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typedef
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NW_Uint8
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(*NW_XHTML_ElementHandler_ProcessEvent_t) (const NW_XHTML_ElementHandler_t* elementHandler,
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                                           NW_XHTML_ContentHandler_t* contentHandler,
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                                           NW_DOM_ElementNode_t* elementNode,
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                                           NW_LMgr_Box_t* box,
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                                           NW_Evt_Event_t* event);
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/* ------------------------------------------------------------------------- *
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   class definition
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 * ------------------------------------------------------------------------- */
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typedef struct NW_XHTML_ElementHandler_ClassPart_s {
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  NW_XHTML_ElementHandler_Initialize_t initialize;
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  NW_XHTML_ElementHandler_CreateBoxTree_t createBoxTree;
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  NW_XHTML_ElementHandler_ProcessEvent_t processEvent;
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} NW_XHTML_ElementHandler_ClassPart_t;
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struct NW_XHTML_ElementHandler_Class_s {
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  NW_Object_Core_ClassPart_t NW_Object_Core;
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  NW_XHTML_ElementHandler_ClassPart_t NW_XHTML_ElementHandler;
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};
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/* ------------------------------------------------------------------------- *
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   object definiton
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 * ------------------------------------------------------------------------- */
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struct NW_XHTML_ElementHandler_s {
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  NW_Object_Core_t super;
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};
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/* ------------------------------------------------------------------------- *
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   convenience macros
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 * ------------------------------------------------------------------------- */
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#define NW_XHTML_ElementHandler_GetClassPart(_object) \
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  (NW_Object_GetClassPart((_object), NW_XHTML_ElementHandler))
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#define NW_XHTML_ElementHandlerOf(_object) \
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  (NW_Object_Cast (_object, NW_XHTML_ElementHandler))
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/* ------------------------------------------------------------------------- *
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   global static data
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 * ------------------------------------------------------------------------- */
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extern const NW_XHTML_ElementHandler_Class_t NW_XHTML_ElementHandler_Class;
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extern const NW_XHTML_ElementHandler_t NW_XHTML_ElementHandler;
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/* ------------------------------------------------------------------------- *
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   public methods
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 * ------------------------------------------------------------------------- */
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#define NW_XHTML_ElementHandler_Initialize(_elementHandler, _contentHandler, _elementNode) \
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  (NW_XHTML_ElementHandler_GetClassPart (_elementHandler).\
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     initialize ((_elementHandler), (_contentHandler), (_elementNode)))
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#define NW_XHTML_ElementHandler_CreateBoxTree(_elementHandler, _contentHandler, _elementNode, _parentBox) \
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  (NW_XHTML_ElementHandler_GetClassPart (_elementHandler).\
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     createBoxTree ((_elementHandler), (_contentHandler), (_elementNode), \
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                    (_parentBox)))
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#define NW_XHTML_ElementHandler_ProcessEvent(_elementHandler, _contentHandler, _elementNode, _activeBox, _event) \
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  (NW_XHTML_ElementHandler_GetClassPart (_elementHandler).\
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     processEvent ((_elementHandler), (_contentHandler), (_elementNode), \
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                   (_activeBox), (_event)))
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/* ------------------------------------------------------------------------- *
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   final methods
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 * ------------------------------------------------------------------------- */
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TBrowserStatusCode
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NW_XHTML_ElementHandler_ApplyStyles (const NW_XHTML_ElementHandler_t* thisObj,
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                                     NW_XHTML_ContentHandler_t* contentHandler,
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                                     NW_DOM_ElementNode_t* elementNode,
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                                     NW_LMgr_Box_t** box,
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                                     const NW_Evt_Event_t* event);
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TBrowserStatusCode 
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NW_XHTML_ElementHandler_GetAttribute (NW_XHTML_ContentHandler_t *contentHandler,
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                                      NW_DOM_ElementNode_t *elementNode,
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                                      const NW_Uint16 attrToken,
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                                      NW_Ucs2 **attrValue);
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/*
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This should go away when the cXML library gets the ability to cope with
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arbitrary byte orderings.  For now, the UCS-2 has to be fed to cXML in
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network byte order.
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*/
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void
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NW_XHTML_ElementHandler_Ucs2NativeToNetworkByteOrder(NW_Uint32 byteCount,
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                                                       NW_Uint8* pBuf);
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/* ------------------------------------------------------------------------- *
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   convenience method
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 * ------------------------------------------------------------------------- */
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NW_Bool 
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NW_XHTML_ElementHandler_IsBlockLevelTag(NW_Uint16 tagToken);
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/* implementation of the callback function called from CSSHandler*/
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TBrowserStatusCode
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NW_XHTML_ElementHandler_ApplyCSSCallback (void* ch,
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                                          NW_DOM_ElementNode_t* elementNode,
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                                          NW_LMgr_Box_t** box);
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NW_Bool 
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NW_XHTML_ElementHandler_NextSiblingExists (NW_XHTML_ContentHandler_t *contentHandler,
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                                           NW_DOM_ElementNode_t *elementNode,
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                                           NW_Bool controlInitEH);
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NW_Text_t*
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NW_XHTML_ElementHandler_GetSubTreeText(NW_XHTML_ContentHandler_t* aContentHandler, 
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                                       NW_DOM_ElementNode_t* aElementNode);
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#ifdef __cplusplus
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} // extern "C" {
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#endif /* __cplusplus */
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#endif /* NW_XHTML_ELEMENTHANDLER_H */