The Tor Browser / file comparison
comparison: layout/base/nsIReflowCallback.h
layout/base/nsIReflowCallback.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 #ifndef nsIReflowCallback_h___ | |
| 6 #define nsIReflowCallback_h___ | |
| 7 | |
| 8 /** | |
| 9 * Reflow callback interface. | |
| 10 * These are not refcounted. Objects must be removed from the presshell | |
| 11 * callback list before they die. | |
| 12 * Protocol: objects will either get a ReflowFinished() call when a reflow | |
| 13 * has finished or a ReflowCallbackCanceled() call if the shell is destroyed, | |
| 14 * whichever happens first. If the object is explicitly removed from the shell | |
| 15 * (using nsIPresShell::CancelReflowCallback()) before that occurs then neither | |
| 16 * of the callback methods are called. | |
| 17 */ | |
| 18 class nsIReflowCallback { | |
| 19 public: | |
| 20 /** | |
| 21 * The presshell calls this when reflow has finished. Return true if | |
| 22 * you need a Flush_Layout to happen after this. | |
| 23 */ | |
| 24 virtual bool ReflowFinished() = 0; | |
| 25 /** | |
| 26 * The presshell calls this on outstanding callback requests in its | |
| 27 * Destroy() method. The shell removes the request after calling | |
| 28 * ReflowCallbackCanceled(). | |
| 29 */ | |
| 30 virtual void ReflowCallbackCanceled() = 0; | |
| 31 }; | |
| 32 | |
| 33 #endif /* nsIReflowCallback_h___ */ |
