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147 lines
4.9 KiB
C++
147 lines
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Henri Sivonen <hsivonen@iki.fi>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsIContentSink_h___
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#define nsIContentSink_h___
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/**
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* MODULE NOTES:
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* @update gess 4/1/98
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*
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* This pure virtual interface is used as the "glue" that connects the parsing
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* process to the content model construction process.
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*
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* The icontentsink interface is a very lightweight wrapper that represents the
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* content-sink model building process. There is another one that you may care
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* about more, which is the IHTMLContentSink interface. (See that file for details).
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*/
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#include "nsISupports.h"
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#include "nsStringGlue.h"
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#include "mozFlushType.h"
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class nsIParser;
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#define NS_ICONTENT_SINK_IID \
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{ 0xcfa3643b, 0xee60, 0x4bf0, \
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{ 0xbc, 0x83, 0x49, 0x95, 0xdb, 0xbc, 0xda, 0x75 } }
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class nsIContentSink : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICONTENT_SINK_IID)
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/**
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* This method is called by the parser when it is entered from
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* the event loop. The content sink wants to know how long the
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* parser has been active since we last processed events on the
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* main event loop and this call calibrates that measurement.
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*/
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NS_IMETHOD WillParse(void)=0;
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/**
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* This method gets called when the parser begins the process
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* of building the content model via the content sink.
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*
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* @update 5/7/98 gess
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*/
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NS_IMETHOD WillBuildModel(void)=0;
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/**
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* This method gets called when the parser concludes the process
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* of building the content model via the content sink.
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*
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* @update 5/7/98 gess
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*/
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NS_IMETHOD DidBuildModel()=0;
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/**
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* Thie method gets caller right before DidBuildModel is called.
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* If false
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*/
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virtual PRBool ReadyToCallDidBuildModel() { return PR_TRUE; };
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/**
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* This method gets called when the parser gets i/o blocked,
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* and wants to notify the sink that it may be a while before
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* more data is available.
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*
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* @update 5/7/98 gess
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*/
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NS_IMETHOD WillInterrupt(void)=0;
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/**
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* This method gets called when the parser i/o gets unblocked,
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* and we're about to start dumping content again to the sink.
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*
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* @update 5/7/98 gess
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*/
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NS_IMETHOD WillResume(void)=0;
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/**
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* This method gets called by the parser so that the content
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* sink can retain a reference to the parser. The expectation
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* is that the content sink will drop the reference when it
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* gets the DidBuildModel notification i.e. when parsing is done.
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*/
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NS_IMETHOD SetParser(nsIParser* aParser)=0;
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/**
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* Flush content so that the content model is in sync with the state
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* of the sink.
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*
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* @param aType the type of flush to perform
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*/
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virtual void FlushPendingNotifications(mozFlushType aType)=0;
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/**
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* Set the document character set. This should be passed on to the
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* document itself.
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*/
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NS_IMETHOD SetDocumentCharset(nsACString& aCharset)=0;
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/**
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* Returns the target object (often a document object) into which
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* the content built by this content sink is being added, if any
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* (IOW, may return null).
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*/
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virtual nsISupports *GetTarget()=0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsIContentSink, NS_ICONTENT_SINK_IID)
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#endif /* nsIContentSink_h___ */
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