/*

* Copyright (c) 2000 - 2001 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#ifndef NW_CSS_PROCESSOR_H

#define NW_CSS_PROCESSOR_H

#include <e32def.h>  // First to avoid NULL redefine warning (no #ifndef NULL).

#include "nw_object_dynamic.h"

#include "nw_hed_documentnode.h"

#include "nw_hed_domhelper.h"

#include "nw_text_ucs2.h"

#include "nw_lmgr_box.h"

#include "nw_hed_iloadrecipient.h"

#include "nw_image_iimageobserver.h"

#include "nw_css_export.h"

#include "nw_image_abstractimage.h"

#include "nwx_osu_file.h"

#include "BrsrStatusCodes.h"

#ifdef __cplusplus

extern "C" {

#endif /* __cplusplus */

/* ------------------------------------------------------------------------- *

   forward declarations

 * ------------------------------------------------------------------------- */

typedef struct NW_CSS_Processor_Class_s NW_CSS_Processor_Class_t;

typedef struct NW_CSS_Processor_s NW_CSS_Processor_t;

typedef

TBrowserStatusCode  

(*NW_CSS_Processor_ApplyCSSCallbk_t)(void* contentHandler, 

                               NW_DOM_ElementNode_t* elementNode,

                               NW_LMgr_Box_t** box);

/* ------------------------------------------------------------------------- *

   method prototypes

 * ------------------------------------------------------------------------- */

/* ------------------------------------------------------------------------- *

   class definition

 * ------------------------------------------------------------------------- */

typedef struct NW_CSS_Processor_ClassPart_s {

  void** unused;

} NW_CSS_Processor_ClassPart_t;

struct NW_CSS_Processor_Class_s {

  NW_Object_Core_ClassPart_t NW_Object_Core;

  NW_Object_Base_ClassPart_t NW_Object_Base;

  NW_Object_Dynamic_ClassPart_t NW_Object_Dynamic;

  NW_CSS_Processor_ClassPart_t NW_CSS_Processor;

};

/* ------------------------------------------------------------------------- *

   object definiton

 * ------------------------------------------------------------------------- */

struct NW_CSS_Processor_s 

{

  NW_Object_Dynamic_t super;

  /* interface implementations */

  NW_HED_ILoadRecipient_t NW_HED_ILoadRecipient;

  NW_Image_IImageObserver_t NW_Image_IImageObserver;

  /* member variables */

  NW_HED_DocumentNode_t* owner;

  void* imageList;

  void* iLoadList;

  NW_CSS_Processor_ApplyCSSCallbk_t applyCSSCallback;

  void* cssHandler;

  NW_ADT_DynamicVector_t* pendingLoads;

  NW_Bool isSavedDeck;

  NW_Bool isHistLoad;

  NW_Bool isReLoad;

  void* ruleList;

};

/* ------------------------------------------------------------------------- *

   convenience macros

 * ------------------------------------------------------------------------- */

#define NW_CSS_Processor_GetClassPart(_object) \

  (NW_Object_GetClassPart (_object, NW_CSS_Processor))

#define NW_CSS_ProcessorOf(_object) \

  (NW_Object_Cast (_object, NW_CSS_Processor))

/* ------------------------------------------------------------------------- *

   global static data

 * ------------------------------------------------------------------------- */

NW_CSS_EXPORT const NW_CSS_Processor_Class_t NW_CSS_Processor_Class;

/* ------------------------------------------------------------------------- *

   public methods

 * ------------------------------------------------------------------------- */

#define NW_CSS_Processor_SetOwner(_object, _owner) \

  ((NW_CSS_ProcessorOf(_object))->owner = (_owner))

#define NW_CSS_Processor_SetApplyCSSCallback(_object, _applyCSSCallback) \

  ((NW_CSS_ProcessorOf(_object))->applyCSSCallback = (_applyCSSCallback))

#define NW_CSS_Processor_GetApplyCSSCallback(_object) \

  ((NW_CSS_ProcessorOf(_object))->applyCSSCallback)

/* ------------------------------------------------------------------------- *

   final methods

 * ------------------------------------------------------------------------- */

/* called by linkElementHandler or PiHandler to load external stylesheet 

  the encoding will be NULL, if there was not charset attribute found

  */

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_Load(NW_CSS_Processor_t* thisObj, 

                      NW_Text_t* url, 

                      NW_Text_t* encoding,

                      NW_Bool isSavedDeck,

                      NW_Bool isHistLoad,

					  NW_Bool isReLoad);

/** Get images according to the CSS image list, mainly used to show image when user setting has

 *  auto image load disabled.

 *  Called by Epoc32ContentHandler_ImageViewer_load.

 */

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_ShowImages(NW_CSS_Processor_t* thisObj);

/* called by NW_XHTML_ElementHandler_ApplyStyles - now */

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_ApplyStyles(NW_CSS_Processor_t* thisObj,

                             NW_DOM_ElementNode_t* elementNode,

                             NW_LMgr_Box_t* box,

                             const NW_Evt_Event_t* event,

                             NW_HED_DomHelper_t* domHelper);

TBrowserStatusCode

NW_CSS_Processor_ResolveURL (NW_CSS_Processor_t* thisObj,

                             NW_Text_t* url,

                             NW_Text_t** retUrl,

                             TInt aBufferIndex);

/* called by NW_CSS_DeclarationListHandle_ApplyStyles */

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_GetImage(NW_CSS_Processor_t* thisObj, 

                          NW_Text_t* url, 

                          NW_LMgr_Box_t* box,

                          NW_LMgr_PropertyName_t propName,

                          NW_Image_AbstractImage_t** image, 

                          TInt aBufferIndex);

/* invoked by styleElementHandler */

TBrowserStatusCode NW_CSS_Processor_ProcessBuffer(NW_CSS_Processor_t* thisObj,

                       NW_Byte* data, NW_Uint32 length, NW_Uint32 encoding, NW_Bool doNotDelete);

TBrowserStatusCode

NW_CSS_Processor_SetImage(NW_CSS_Processor_t* thisObj,

                          NW_Byte* data,

                          NW_Uint32 length,

                          NW_Http_ContentTypeString_t contentTypeString,

                          NW_Text_t* url);

TBrowserStatusCode

NW_CSS_Processor_ProcessLoadRequest(NW_CSS_Processor_t* thisObj, 

                                    NW_Text_t* url,

                                    NW_Uint8 loadType, 

                                    NW_Bool isSavedDeck,

                                    NW_Bool isHistLoad,

									NW_Bool isReLoad,

                                    TInt aCssBufferIndex);

/* invoked after the XHTML document has been displayed */

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_ApplyStyleSheet(NW_CSS_Processor_t* thisObj);

/* invoked after the XHTML contenthandler suspend */

NW_CSS_EXPORT

void

NW_CSS_Processor_Suspend(NW_CSS_Processor_t* thisObj);

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_ApplyStyleAttribute(NW_CSS_Processor_t* thisObj, NW_Text_t* styleVal, NW_LMgr_Box_t* box);

NW_CSS_EXPORT

NW_Uint32

NW_CSS_Processor_GetNumCSSImages(NW_CSS_Processor_t* thisObj);

NW_CSS_EXPORT

NW_Uint32

NW_CSS_Processor_GetNumStyleSheets(NW_CSS_Processor_t* thisObj);

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_ProcessPendingLoads(NW_CSS_Processor_t* thisObj);

NW_CSS_EXPORT

TBrowserStatusCode

NW_CSS_Processor_WriteMultipartSegment(NW_CSS_Processor_t* thisObj, 

                                       NW_Osu_File_t fh,

                                       NW_Uint32 numCSSImages,

                                       NW_Uint32 numStyleSheets);

NW_CSS_EXPORT

void

NW_CSS_Processor_SetDictionary(NW_CSS_Processor_t* thisObj, NW_WBXML_Dictionary_t* dictionary);

#ifdef _BROWSER_ENG_DEBUG

NW_CSS_EXPORT

void NW_CSS_Processor_PrintProperties(NW_LMgr_Box_t* box);

#endif /* _BROWSER_ENG_DEBUG */

/* ------------------------------------------------------------------------- *

  convenience functions

 * ------------------------------------------------------------------------- */

NW_CSS_EXPORT

NW_CSS_Processor_t*

NW_CSS_Processor_New();

/* Based on the displayVal, replaces the box type */

TBrowserStatusCode

NW_CSS_Processor_HandleDisplayVal (NW_LMgr_Box_t** box, NW_LMgr_PropertyValue_t *displayVal);

#ifdef __cplusplus

} // extern "C" {

#endif /* __cplusplus */

#endif /* NW_CSS_PROCESSOR_H */