The Tor Browser: layout/base/nsIReflowCallback.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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___

     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 };

    33 #endif /* nsIReflowCallback_h___ */

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