author Andreas Farre <farre@mozilla.com>
Tue, 30 Apr 2019 08:45:41 +0000
changeset 530717 6faa9ec592f5a0fa1a7bca868f8e7eab6c37a346
parent 517333 1c6224158f64ae4291133faa56f538413092ff98
child 530873 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
Bug 1547219 - Add helper for iterating ContentParents in BCG. r=nika Differential Revision: https://phabricator.services.mozilla.com/D29152

/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
/* 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 nsAppShellSingleton_h__
#define nsAppShellSingleton_h__

 * This file is designed to be included into the file that provides the
 * nsIModule implementation for a particular widget toolkit.
 * The following functions are defined:
 *   nsAppShellInit
 *   nsAppShellShutdown
 *   nsAppShellConstructor
 * The nsAppShellInit function is designed to be used as a module constructor.
 * If you already have a module constructor, then call nsAppShellInit from your
 * module constructor.
 * The nsAppShellShutdown function is designed to be used as a module
 * destructor.  If you already have a module destructor, then call
 * nsAppShellShutdown from your module destructor.
 * The nsAppShellConstructor function is designed to be used as a factory
 * method for the nsAppShell class.

#include "nsXULAppAPI.h"

static nsIAppShell *sAppShell;

static nsresult nsAppShellInit() {
  NS_ASSERTION(!sAppShell, "already initialized");

  sAppShell = new nsAppShell();
  if (!sAppShell) return NS_ERROR_OUT_OF_MEMORY;

  nsresult rv;
  rv = static_cast<nsAppShell *>(sAppShell)->Init();
  if (NS_FAILED(rv)) {
    return rv;

  return NS_OK;

static void nsAppShellShutdown() { NS_RELEASE(sAppShell); }

nsresult nsAppShellConstructor(nsISupports *outer, const nsIID &iid,
                               void **result) {

  return sAppShell->QueryInterface(iid, result);

#endif  // nsAppShellSingleton_h__