Quellcode-Bibliothek nsIHTMLContentSink.h
Sprache: C
/* -*- 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/** * This interface is OBSOLETE and in the process of being REMOVED.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"
/** * This interface is OBSOLETE and in the process of being REMOVED.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.
*/ virtualbool WaitForPendingSheets() = 0;
};
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