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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsIHTMLContentSink_h___
#define nsIHTMLContentSink_h___
/**
* This interface is OBSOLETE and in the process of being REMOVED.
* Do NOT implement!
*
* 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 precedes 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 "nsIContentSink.h"
#include "nsHTMLTags.h"
#define NS_IHTML_CONTENT_SINK_IID \
{ \
0xefc5af86, 0x5cfd, 0x4918, { \
0x9d, 0xd3, 0x5f, 0x7a, 0xb2, 0x88, 0xb2, 0x68 \
} \
}
/**
* This interface is OBSOLETE and in the process of being REMOVED.
* Do NOT implement!
*/
class nsIHTMLContentSink : public nsIContentSink {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IHTML_CONTENT_SINK_IID)
enum ElementType { eHTML, eBody };
/**
* This method is used to open a generic container in the sink.
*
* @update 4/1/98 gess
*/
NS_IMETHOD OpenContainer(ElementType aNodeType) = 0;
/**
* This method gets called by the parser when a close
* container tag has been consumed and needs to be closed.
*
* @param aTag - The tag to be closed.
*/
NS_IMETHOD CloseContainer(ElementType aTag) = 0;
/**
* This method returns true if there are more than one
* pending style sheets, false otherwise.
*/
virtual bool WaitForPendingSheets() = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIHTMLContentSink, NS_IHTML_CONTENT_SINK_IID)
#endif /* nsIHTMLContentSink_h___ */
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