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https://gitlab.winehq.org/wine/wine-gecko.git
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67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsIGlobalObject_h__
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#define nsIGlobalObject_h__
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#include "nsISupports.h"
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#include "js/TypeDecls.h"
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#define NS_IGLOBALOBJECT_IID \
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{ 0xe2538ded, 0x13ef, 0x4f4d, \
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{ 0x94, 0x6b, 0x65, 0xd3, 0x33, 0xb4, 0xf0, 0x3c } }
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class nsIPrincipal;
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class nsIGlobalObject : public nsISupports
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{
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bool mIsDying;
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protected:
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nsIGlobalObject()
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: mIsDying(false)
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{}
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_IGLOBALOBJECT_IID)
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/**
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* This check is added to deal with Promise microtask queues. On the main
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* thread, we do not impose restrictions about when script stops running or
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* when runnables can no longer be dispatched to the main thread. This means
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* it is possible for a Promise chain to keep resolving an infinite chain of
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* promises, preventing the browser from shutting down. See Bug 1058695. To
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* prevent this, the nsGlobalWindow subclass sets this flag when it is
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* closed. The Promise implementation checks this and prohibits new runnables
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* from being dispatched.
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*
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* We pair this with checks during processing the promise microtask queue
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* that pops up the slow script dialog when the Promise queue is preventing
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* a window from going away.
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*/
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bool
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IsDying() const
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{
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return mIsDying;
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}
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virtual JSObject* GetGlobalJSObject() = 0;
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// This method is not meant to be overridden.
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nsIPrincipal* PrincipalOrNull();
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protected:
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void
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StartDying()
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{
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mIsDying = true;
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}
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsIGlobalObject,
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NS_IGLOBALOBJECT_IID)
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#endif // nsIGlobalObject_h__
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