mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 08:35:26 +00:00
34 lines
1.3 KiB
C++
34 lines
1.3 KiB
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 nsIReflowCallback_h___
|
|
#define nsIReflowCallback_h___
|
|
|
|
/**
|
|
* Reflow callback interface.
|
|
* These are not refcounted. Objects must be removed from the presshell
|
|
* callback list before they die.
|
|
* Protocol: objects will either get a ReflowFinished() call when a reflow
|
|
* has finished or a ReflowCallbackCanceled() call if the shell is destroyed,
|
|
* whichever happens first. If the object is explicitly removed from the shell
|
|
* (using nsIPresShell::CancelReflowCallback()) before that occurs then neither
|
|
* of the callback methods are called.
|
|
*/
|
|
class nsIReflowCallback {
|
|
public:
|
|
/**
|
|
* The presshell calls this when reflow has finished. Return true if
|
|
* you need a Flush_Layout to happen after this.
|
|
*/
|
|
virtual bool ReflowFinished() = 0;
|
|
/**
|
|
* The presshell calls this on outstanding callback requests in its
|
|
* Destroy() method. The shell removes the request after calling
|
|
* ReflowCallbackCanceled().
|
|
*/
|
|
virtual void ReflowCallbackCanceled() = 0;
|
|
};
|
|
|
|
#endif /* nsIReflowCallback_h___ */
|