1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Communicator client code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Original Author: David Hyatt (hyatt@netscape.com)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
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32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
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36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 : #ifndef nsIReflowCallback_h___
39 : #define nsIReflowCallback_h___
40 :
41 : /**
42 : * Reflow callback interface.
43 : * These are not refcounted. Objects must be removed from the presshell
44 : * callback list before they die.
45 : * Protocol: objects will either get a ReflowFinished() call when a reflow
46 : * has finished or a ReflowCallbackCanceled() call if the shell is destroyed,
47 : * whichever happens first. If the object is explicitly removed from the shell
48 : * (using nsIPresShell::CancelReflowCallback()) before that occurs then neither
49 : * of the callback methods are called.
50 : */
51 0 : class nsIReflowCallback {
52 : public:
53 : /**
54 : * The presshell calls this when reflow has finished. Return true if
55 : * you need a Flush_Layout to happen after this.
56 : */
57 : virtual bool ReflowFinished() = 0;
58 : /**
59 : * The presshell calls this on outstanding callback requests in its
60 : * Destroy() method. The shell removes the request after calling
61 : * ReflowCallbackCanceled().
62 : */
63 : virtual void ReflowCallbackCanceled() = 0;
64 : };
65 :
66 : #endif /* nsIReflowCallback_h___ */
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