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Add the origin ContentParent to a CanonicalBrowsingContext's group when a CanonicalBrowsingContext is created from IPC. With this it is possible to keep track of all child processes associated with a BrowsingContextGroup. Differential Revision: https://phabricator.services.mozilla.com/D19004 --HG-- extra : moz-landing-system : lando
80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 mozilla_dom_BrowsingContextGroup_h
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#define mozilla_dom_BrowsingContextGroup_h
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#include "mozilla/dom/BrowsingContext.h"
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/StaticPtr.h"
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#include "nsHashKeys.h"
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#include "nsTArray.h"
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#include "nsTHashtable.h"
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#include "nsWrapperCache.h"
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namespace mozilla {
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namespace dom {
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class BrowsingContext;
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// A BrowsingContextGroup represents the Unit of Related Browsing Contexts in
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// the standard. This object currently serves roughly the same purpose as the
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// TabGroup class which already exists, and at some point will likely merge with
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// it.
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//
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// A BrowsingContext may not hold references to other BrowsingContext objects
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// which are not in the same BrowsingContextGroup.
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class BrowsingContextGroup final : public nsWrapperCache {
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public:
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(BrowsingContextGroup)
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(BrowsingContextGroup)
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typedef nsTHashtable<nsRefPtrHashKey<ContentParent>> ContentParents;
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// Interact with the list of BrowsingContexts.
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bool Contains(BrowsingContext* aContext);
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void Register(BrowsingContext* aContext);
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void Unregister(BrowsingContext* aContext);
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// Interact with the list of ContentParents
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void Subscribe(ContentParent* aOriginProcess);
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void Unsubscribe(ContentParent* aOriginProcess);
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ContentParents::Iterator ContentParentsIter() { return mSubscribers.Iter(); }
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// Get a reference to the list of toplevel contexts in this
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// BrowsingContextGroup.
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BrowsingContext::Children& Toplevels() { return mToplevels; }
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void GetToplevels(BrowsingContext::Children& aToplevels) {
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aToplevels.AppendElements(mToplevels);
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}
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nsISupports* GetParentObject() const;
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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BrowsingContextGroup() = default;
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private:
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friend class CanonicalBrowsingContext;
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~BrowsingContextGroup();
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// A BrowsingContextGroup contains a series of BrowsingContext objects. They
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// are addressed using a hashtable to avoid linear lookup when adding or
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// removing elements from the set.
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nsTHashtable<nsRefPtrHashKey<BrowsingContext>> mContexts;
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// The set of toplevel browsing contexts in the current BrowsingContextGroup.
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BrowsingContext::Children mToplevels;
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ContentParents mSubscribers;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // !defined(mozilla_dom_BrowsingContextGroup_h)
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