mirror of
https://github.com/mozilla/gecko-dev.git
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8ed0cb2ea7
Differential Revision: https://phabricator.services.mozilla.com/D50574 --HG-- extra : rebase_source : 0381ae4297820f92caa5a77f588c9372093c8315 extra : source : ebb01f79e94a182e4886c4af5b0f27f5b7a41c4e extra : histedit_source : 4010d5a26f2fad681984e76718112d657d2e5fa1
128 lines
3.5 KiB
C++
128 lines
3.5 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_SHEntryChild_h
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#define mozilla_dom_SHEntryChild_h
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#include "mozilla/dom/PSHEntryChild.h"
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#include "mozilla/dom/MaybeNewPSHEntry.h"
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#include "nsContentUtils.h"
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#include "nsExpirationTracker.h"
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#include "nsIBFCacheEntry.h"
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#include "nsISHEntry.h"
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#include "nsRect.h"
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#include "nsSHEntryShared.h"
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#include "nsStubMutationObserver.h"
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class nsDocShellEditorData;
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class nsIContentViewer;
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class nsILayoutHistoryState;
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class nsIMutableArray;
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namespace mozilla {
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namespace dom {
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class SHistoryChild;
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/**
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* Implementation of the shared state for session history entries in the child
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* process.
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*/
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class SHEntryChildShared final : public nsIBFCacheEntry,
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public nsStubMutationObserver,
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public SHEntrySharedChildState {
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public:
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static void Init();
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static SHEntryChildShared* GetOrCreate(SHistoryChild* aSHistory,
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uint64_t aSharedID);
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static void Remove(uint64_t aSharedID);
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static uint64_t CreateSharedID() {
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return nsContentUtils::GenerateProcessSpecificId(++sNextSharedID);
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}
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static void EvictContentViewers(
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const nsTArray<uint64_t>& aToEvictSharedStateIDs);
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void NotifyListenersContentViewerEvicted(uint32_t aNumEvicted = 1);
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NS_DECL_ISUPPORTS
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NS_DECL_NSIBFCACHEENTRY
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// The nsIMutationObserver bits we actually care about.
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NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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nsExpirationState* GetExpirationState() { return &mExpirationState; }
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uint64_t GetID() { return mID; }
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private:
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static uint64_t sNextSharedID;
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SHEntryChildShared(SHistoryChild* aSHistory, uint64_t aID);
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~SHEntryChildShared();
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friend class SHEntryChild;
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already_AddRefed<SHEntryChildShared> Duplicate();
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void RemoveFromExpirationTracker();
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void SyncPresentationState();
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void DropPresentationState();
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nsresult SetContentViewer(nsIContentViewer* aViewer);
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uint64_t mID;
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RefPtr<SHistoryChild> mSHistory;
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};
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/**
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* Session history entry actor for the child process.
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*/
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class SHEntryChild final : public PSHEntryChild,
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public nsISHEntry,
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public CrossProcessSHEntry {
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friend class PSHEntryChild;
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using PSHEntryChild::CrossProcessSHEntry;
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public:
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explicit SHEntryChild(const SHEntryChild* aClone)
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: mShared(aClone->mShared.get()), mIPCActorDeleted(false) {}
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SHEntryChild(SHistoryChild* aSHistory, uint64_t aSharedID)
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: mShared(SHEntryChildShared::GetOrCreate(aSHistory, aSharedID)),
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mIPCActorDeleted(false) {}
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NS_DECL_ISUPPORTS
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NS_DECL_NSISHENTRY
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void EvictContentViewer();
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protected:
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void ActorDestroy(ActorDestroyReason aWhy) override {
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mIPCActorDeleted = true;
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}
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private:
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~SHEntryChild() = default;
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RefPtr<SHEntryChildShared> mShared;
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bool mIPCActorDeleted;
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};
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inline SHEntryChild* CrossProcessSHEntry::ToSHEntryChild() {
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MOZ_ASSERT(XRE_IsContentProcess(), "Wrong side!");
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return static_cast<SHEntryChild*>(this);
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}
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_SHEntryChild_h */
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