зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
2.8 KiB
C++
67 строки
2.8 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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* Original Author: David Hyatt (hyatt@netscape.com)
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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 nsIReflowCallback_h___
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#define nsIReflowCallback_h___
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/**
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* Reflow callback interface.
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* These are not refcounted. Objects must be removed from the presshell
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* callback list before they die.
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* Protocol: objects will either get a ReflowFinished() call when a reflow
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* has finished or a ReflowCallbackCanceled() call if the shell is destroyed,
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* whichever happens first. If the object is explicitly removed from the shell
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* (using nsIPresShell::CancelReflowCallback()) before that occurs then neither
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* of the callback methods are called.
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*/
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class nsIReflowCallback {
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public:
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/**
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* The presshell calls this when reflow has finished. Return PR_TRUE if
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* you need a Flush_Layout to happen after this.
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*/
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virtual PRBool ReflowFinished() = 0;
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/**
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* The presshell calls this on outstanding callback requests in its
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* Destroy() method. The shell removes the request after calling
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* ReflowCallbackCanceled().
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*/
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virtual void ReflowCallbackCanceled() = 0;
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};
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#endif /* nsIReflowCallback_h___ */
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