gecko-dev/htmlparser/public/nsIContentSink.h

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/* -*- 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
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*
* 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):
*
*
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* 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"),
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#ifndef nsIContentSink_h___
#define nsIContentSink_h___
/**
* MODULE NOTES:
* @update gess 4/1/98
*
* This pure virtual interface is used as the "glue" that connects the parsing
* process to the content model construction process.
*
* The icontentsink interface is a very lightweight wrapper that represents the
* content-sink model building process. There is another one that you may care
* about more, which is the IHTMLContentSink interface. (See that file for details).
*/
#include "nsISupports.h"
#include "nsString.h"
class nsIParser;
#define NS_ICONTENT_SINK_IID \
{ 0xa6cf9052, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
// The base value for the content ID counter.
// Values greater than or equal to this base value are used
// by each of the content sinks to assign unique values
// to the content objects created by them.
#define NS_CONTENT_ID_COUNTER_BASE 10000
class nsIContentSink : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ICONTENT_SINK_IID)
/**
* This method gets called when the parser begins the process
* of building the content model via the content sink.
*
* @update 5/7/98 gess
*/
NS_IMETHOD WillBuildModel(void)=0;
/**
* This method gets called when the parser concludes the process
* of building the content model via the content sink.
*
* @param aQualityLevel describes how well formed the doc was.
* 0=GOOD; 1=FAIR; 2=POOR;
* @update 5/7/98 gess
*/
NS_IMETHOD DidBuildModel(PRInt32 aQualityLevel)=0;
/**
* This method gets called when the parser gets i/o blocked,
* and wants to notify the sink that it may be a while before
* more data is available.
*
* @update 5/7/98 gess
*/
NS_IMETHOD WillInterrupt(void)=0;
/**
* This method gets called when the parser i/o gets unblocked,
* and we're about to start dumping content again to the sink.
*
* @update 5/7/98 gess
*/
NS_IMETHOD WillResume(void)=0;
/**
* This method gets called by the parser so that the content
* sink can retain a reference to the parser. The expectation
* is that the content sink will drop the reference when it
* gets the DidBuildModel notification i.e. when parsing is done.
*/
NS_IMETHOD SetParser(nsIParser* aParser)=0;
/**
* Flush all pending notifications so that the content model
* is in sync with the state of the sink.
*/
NS_IMETHOD FlushPendingNotifications()=0;
/**
* Set the document character set. This should be passed on to the
* document itself.
*/
NS_IMETHOD SetDocumentCharset(nsAString& aCharset)=0;
};
#endif /* nsIContentSink_h___ */