mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 21:55:31 +00:00
283 lines
9.1 KiB
C++
283 lines
9.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.1 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla Communicator client code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the NPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the NPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
#ifndef nsIHTMLContentSink_h___
|
|
#define nsIHTMLContentSink_h___
|
|
|
|
/**
|
|
* MODULE NOTES:
|
|
* @update gess 4/1/98
|
|
*
|
|
* This file declares the concrete HTMLContentSink class.
|
|
* This class is used during the parsing process as the
|
|
* primary interface between the parser and the content
|
|
* model.
|
|
*
|
|
* After the tokenizer completes, the parser iterates over
|
|
* the known token list. As the parser identifies valid
|
|
* elements, it calls the contentsink interface to notify
|
|
* the content model that a new node or child node is being
|
|
* created and added to the content model.
|
|
*
|
|
* The HTMLContentSink interface assumes 4 underlying
|
|
* containers: HTML, HEAD, BODY and FRAMESET. Before
|
|
* accessing any these, the parser will call the appropriate
|
|
* OpennsIHTMLContentSink method: OpenHTML,OpenHead,OpenBody,OpenFrameSet;
|
|
* likewise, the ClosensIHTMLContentSink version will be called when the
|
|
* parser is done with a given section.
|
|
*
|
|
* IMPORTANT: The parser may Open each container more than
|
|
* once! This is due to the irregular nature of HTML files.
|
|
* For example, it is possible to encounter plain text at
|
|
* the start of an HTML document (that preceeds the HTML tag).
|
|
* Such text is treated as if it were part of the body.
|
|
* In such cases, the parser will Open the body, pass the text-
|
|
* node in and then Close the body. The body will likely be
|
|
* re-Opened later when the actual <BODY> tag has been seen.
|
|
*
|
|
* Containers within the body are Opened and Closed
|
|
* using the OpenContainer(...) and CloseContainer(...) calls.
|
|
* It is assumed that the document or contentSink is
|
|
* maintaining its state to manage where new content should
|
|
* be added to the underlying document.
|
|
*
|
|
* NOTE: OpenHTML() and OpenBody() may get called multiple times
|
|
* in the same document. That's fine, and it doesn't mean
|
|
* that we have multiple bodies or HTML's.
|
|
*
|
|
* NOTE: I haven't figured out how sub-documents (non-frames)
|
|
* are going to be handled. Stay tuned.
|
|
*/
|
|
#include "nsIParserNode.h"
|
|
#include "nsIContentSink.h"
|
|
|
|
#define NS_IHTML_CONTENT_SINK_IID \
|
|
{ 0xa6cf9051, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
|
|
|
|
|
|
#ifdef XP_MAC
|
|
#define MAX_REFLOW_DEPTH 75 //setting to 75 to prevent layout from crashing on mac. Bug 55095.
|
|
#else
|
|
#define MAX_REFLOW_DEPTH 200 //windows and linux (etc) can do much deeper structures.
|
|
#endif
|
|
|
|
|
|
class nsIHTMLContentSink : public nsIContentSink {
|
|
public:
|
|
|
|
static const nsIID& GetIID() { static nsIID iid = NS_IHTML_CONTENT_SINK_IID; return iid; }
|
|
|
|
/**
|
|
* This method gets called by the parser when it encounters
|
|
* a title tag and wants to set the document title in the sink.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsString reference to new title value
|
|
*/
|
|
NS_IMETHOD SetTitle(const nsString& aValue)=0;
|
|
|
|
/**
|
|
* This method is used to open the outer HTML container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD OpenHTML(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to close the outer HTML container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD CloseHTML(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to open the only HEAD container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD OpenHead(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to close the only HEAD container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD CloseHead(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to open the main BODY container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD OpenBody(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to close the main BODY container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD CloseBody(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to open a new FORM container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD OpenForm(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to close the outer FORM container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD CloseForm(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to open a new MAP container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD OpenMap(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to close the MAP container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD CloseMap(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to open the FRAMESET container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD OpenFrameset(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method is used to close the FRAMESET container.
|
|
*
|
|
* @update 4/1/98 gess
|
|
* @param nsIParserNode reference to parser node interface
|
|
*/
|
|
NS_IMETHOD CloseFrameset(const nsIParserNode& aNode)=0;
|
|
|
|
/**
|
|
* This method tells the sink whether or not it is
|
|
* encoding an HTML fragment or the whole document.
|
|
* By default, the entire document is encoded.
|
|
*
|
|
* @update 03/14/99 gpk
|
|
* @param aFlag set to true if only encoding a fragment
|
|
*/
|
|
|
|
NS_IMETHOD DoFragment(PRBool aFlag)=0;
|
|
|
|
/**
|
|
* This gets called when handling illegal contents, especially
|
|
* in dealing with tables. This method creates a new context.
|
|
*
|
|
* @update 04/04/99 harishd
|
|
* @param aPosition - The position from where the new context begins.
|
|
*/
|
|
NS_IMETHOD BeginContext(PRInt32 aPosition)=0;
|
|
|
|
/**
|
|
* This method terminates any new context that got created by
|
|
* BeginContext and switches back to the main context.
|
|
*
|
|
* @update 04/04/99 harishd
|
|
* @param aPosition - Validates the end of a context.
|
|
*/
|
|
NS_IMETHOD EndContext(PRInt32 aPosition)=0;
|
|
|
|
/**
|
|
* Use this method to retrieve pref. for the tag.
|
|
*
|
|
* @update 04/11/01 harishd
|
|
* @param aTag - Check pref. for this tag.
|
|
*/
|
|
NS_IMETHOD GetPref(PRInt32 aTag,PRBool& aPref)=0;
|
|
|
|
/**
|
|
* This method is called when parser is about to begin
|
|
* synchronously processing a chunk of tokens.
|
|
*/
|
|
NS_IMETHOD WillProcessTokens(void)=0;
|
|
|
|
/**
|
|
* This method is called when parser has
|
|
* completed processing a chunk of tokens. The processing of the
|
|
* tokens may be interrupted by returning NS_ERROR_HTMLPARSER_INTERRUPTED from
|
|
* DidProcessAToken.
|
|
*/
|
|
NS_IMETHOD DidProcessTokens()=0;
|
|
|
|
/**
|
|
* This method is called when parser is about to
|
|
* process a single token
|
|
*/
|
|
NS_IMETHOD WillProcessAToken(void)=0;
|
|
|
|
/**
|
|
* This method is called when parser has completed
|
|
* the processing for a single token.
|
|
* @return NS_OK if processing should not be interrupted
|
|
* NS_ERROR_HTMLPARSER_INTERRUPTED if the parsing should be interrupted
|
|
*/
|
|
NS_IMETHOD DidProcessAToken(void)=0;
|
|
|
|
};
|
|
|
|
#ifdef NS_DEBUG
|
|
|
|
extern nsresult NS_NewHTMLNullSink(nsIContentSink** aInstancePtrResult);
|
|
|
|
#endif
|
|
|
|
#endif /* nsIHTMLContentSink_h___ */
|