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965f006a70
This flips the direction in which the BrowserBridge actor is generally created such that it is generally created in the parent and sent down to a child process. This is done by making the decision about what kind of switch to perform in the parent, and sending messages down to child processes async to orchestrate these process changes. Process launching is changed to use an async `MozPromise`-returning API in this patch, though the actual process launching still occurs synchronously. A future patch will enable performing async process launching through the NewOrUsedBrowserProcess mechanism. I know of at least a few timing issues which exist with the new logic, especially around the state of the BrowsingContext during the process transition. I decided to not try to fix all of these issues in this patch, as many are complex and will require changing how we manage the lifecycle of BrowsingContext substantially. I do, however, think that the new logic is more reliable and has fewer timing issues than the previous logic. Differential Revision: https://phabricator.services.mozilla.com/D47310 --HG-- extra : moz-landing-system : lando
114 lines
3.8 KiB
C++
114 lines
3.8 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_BrowserBridgeParent_h
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#define mozilla_dom_BrowserBridgeParent_h
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#include "mozilla/dom/PBrowserBridgeParent.h"
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#include "mozilla/Tuple.h"
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#include "mozilla/dom/ipc/IdType.h"
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namespace mozilla {
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namespace a11y {
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class DocAccessibleParent;
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}
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namespace dom {
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class BrowserParent;
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/**
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* BrowserBridgeParent implements the parent actor part of the PBrowserBridge
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* protocol. See PBrowserBridge for more information.
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*/
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class BrowserBridgeParent : public PBrowserBridgeParent {
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public:
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NS_INLINE_DECL_REFCOUNTING(BrowserBridgeParent, final);
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BrowserBridgeParent();
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// Initialize this actor after performing startup.
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nsresult Init(const nsString& aPresentationURL, const nsString& aRemoteType,
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const WindowGlobalInit& aWindowInit, uint32_t aChromeFlags,
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TabId aTabId);
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nsresult InitWithProcess(ContentParent* aContentParent,
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const nsString& aPresentationURL,
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const WindowGlobalInit& aWindowInit,
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uint32_t aChromeFlags, TabId aTabId);
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BrowserParent* GetBrowserParent() { return mBrowserParent; }
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CanonicalBrowsingContext* GetBrowsingContext();
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// Get our manager actor.
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BrowserParent* Manager();
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#if defined(ACCESSIBILITY)
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/**
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* Get the accessible for this iframe's embedder OuterDocAccessible.
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* This returns the actor for the containing document and the unique id of
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* the embedder accessible within that document.
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*/
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Tuple<a11y::DocAccessibleParent*, uint64_t> GetEmbedderAccessible() {
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return Tuple<a11y::DocAccessibleParent*, uint64_t>(mEmbedderAccessibleDoc,
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mEmbedderAccessibleID);
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}
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#endif // defined(ACCESSIBILITY)
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// Tear down this BrowserBridgeParent.
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void Destroy();
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protected:
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friend class PBrowserBridgeParent;
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mozilla::ipc::IPCResult RecvShow(const ScreenIntSize& aSize,
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const bool& aParentIsActive,
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const nsSizeMode& aSizeMode);
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mozilla::ipc::IPCResult RecvLoadURL(const nsCString& aUrl);
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mozilla::ipc::IPCResult RecvResumeLoad(uint64_t aPendingSwitchID);
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mozilla::ipc::IPCResult RecvUpdateDimensions(
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const DimensionInfo& aDimensions);
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mozilla::ipc::IPCResult RecvUpdateEffects(const EffectsInfo& aEffects);
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mozilla::ipc::IPCResult RecvRenderLayers(const bool& aEnabled,
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const LayersObserverEpoch& aEpoch);
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mozilla::ipc::IPCResult RecvNavigateByKey(const bool& aForward,
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const bool& aForDocumentNavigation);
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mozilla::ipc::IPCResult RecvDispatchSynthesizedMouseEvent(
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const WidgetMouseEvent& aEvent);
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mozilla::ipc::IPCResult RecvSkipBrowsingContextDetach();
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mozilla::ipc::IPCResult RecvActivate();
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mozilla::ipc::IPCResult RecvDeactivate(const bool& aWindowLowering);
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mozilla::ipc::IPCResult RecvSetIsUnderHiddenEmbedderElement(
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const bool& aIsUnderHiddenEmbedderElement);
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mozilla::ipc::IPCResult RecvSetEmbedderAccessible(PDocAccessibleParent* aDoc,
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uint64_t aID);
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void ActorDestroy(ActorDestroyReason aWhy) override;
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private:
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~BrowserBridgeParent();
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RefPtr<BrowserParent> mBrowserParent;
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#if defined(ACCESSIBILITY)
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RefPtr<a11y::DocAccessibleParent> mEmbedderAccessibleDoc;
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uint64_t mEmbedderAccessibleID = 0;
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#endif // defined(ACCESSIBILITY)
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};
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} // namespace dom
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} // namespace mozilla
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#endif // !defined(mozilla_dom_BrowserBridgeParent_h)
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