From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 dom/base/nsInProcessTabChildGlobal.cpp | 354 +++++++++++++++++++++++++++++++++
 1 file changed, 354 insertions(+)
 create mode 100644 dom/base/nsInProcessTabChildGlobal.cpp

(limited to 'dom/base/nsInProcessTabChildGlobal.cpp')

diff --git a/dom/base/nsInProcessTabChildGlobal.cpp b/dom/base/nsInProcessTabChildGlobal.cpp
new file mode 100644
index 000000000..10ccf4aec
--- /dev/null
+++ b/dom/base/nsInProcessTabChildGlobal.cpp
@@ -0,0 +1,354 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "nsInProcessTabChildGlobal.h"
+#include "nsContentUtils.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsComponentManagerUtils.h"
+#include "nsScriptLoader.h"
+#include "nsFrameLoader.h"
+#include "xpcpublic.h"
+#include "nsIMozBrowserFrame.h"
+#include "nsDOMClassInfoID.h"
+#include "mozilla/EventDispatcher.h"
+#include "mozilla/dom/SameProcessMessageQueue.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::dom::ipc;
+
+bool
+nsInProcessTabChildGlobal::DoSendBlockingMessage(JSContext* aCx,
+                                                 const nsAString& aMessage,
+                                                 StructuredCloneData& aData,
+                                                 JS::Handle<JSObject *> aCpows,
+                                                 nsIPrincipal* aPrincipal,
+                                                 nsTArray<StructuredCloneData>* aRetVal,
+                                                 bool aIsSync)
+{
+  SameProcessMessageQueue* queue = SameProcessMessageQueue::Get();
+  queue->Flush();
+
+  if (mChromeMessageManager) {
+    SameProcessCpowHolder cpows(JS::RootingContext::get(aCx), aCpows);
+    RefPtr<nsFrameMessageManager> mm = mChromeMessageManager;
+    nsCOMPtr<nsIFrameLoader> fl = GetFrameLoader();
+    mm->ReceiveMessage(mOwner, fl, aMessage, true, &aData, &cpows, aPrincipal,
+                       aRetVal);
+  }
+  return true;
+}
+
+class nsAsyncMessageToParent : public nsSameProcessAsyncMessageBase,
+                               public SameProcessMessageQueue::Runnable
+{
+public:
+  nsAsyncMessageToParent(JS::RootingContext* aRootingCx,
+                         JS::Handle<JSObject*> aCpows,
+                         nsInProcessTabChildGlobal* aTabChild)
+    : nsSameProcessAsyncMessageBase(aRootingCx, aCpows)
+    , mTabChild(aTabChild)
+  { }
+
+  virtual nsresult HandleMessage() override
+  {
+    nsCOMPtr<nsIFrameLoader> fl = mTabChild->GetFrameLoader();
+    ReceiveMessage(mTabChild->mOwner, fl, mTabChild->mChromeMessageManager);
+    return NS_OK;
+  }
+  RefPtr<nsInProcessTabChildGlobal> mTabChild;
+};
+
+nsresult
+nsInProcessTabChildGlobal::DoSendAsyncMessage(JSContext* aCx,
+                                              const nsAString& aMessage,
+                                              StructuredCloneData& aData,
+                                              JS::Handle<JSObject *> aCpows,
+                                              nsIPrincipal* aPrincipal)
+{
+  SameProcessMessageQueue* queue = SameProcessMessageQueue::Get();
+  JS::RootingContext* rcx = JS::RootingContext::get(aCx);
+  RefPtr<nsAsyncMessageToParent> ev =
+    new nsAsyncMessageToParent(rcx, aCpows, this);
+
+  nsresult rv = ev->Init(aMessage, aData, aPrincipal);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  queue->Push(ev);
+  return NS_OK;
+}
+
+nsInProcessTabChildGlobal::nsInProcessTabChildGlobal(nsIDocShell* aShell,
+                                                     nsIContent* aOwner,
+                                                     nsFrameMessageManager* aChrome)
+: mDocShell(aShell), mInitialized(false), mLoadingScript(false),
+  mPreventEventsEscaping(false),
+  mOwner(aOwner), mChromeMessageManager(aChrome)
+{
+  SetIsNotDOMBinding();
+  mozilla::HoldJSObjects(this);
+
+  // If owner corresponds to an <iframe mozbrowser> or <iframe mozapp>, we'll
+  // have to tweak our PreHandleEvent implementation.
+  nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(mOwner);
+  if (browserFrame) {
+    mIsBrowserOrAppFrame = browserFrame->GetReallyIsBrowserOrApp();
+  }
+  else {
+    mIsBrowserOrAppFrame = false;
+  }
+}
+
+nsInProcessTabChildGlobal::~nsInProcessTabChildGlobal()
+{
+  mAnonymousGlobalScopes.Clear();
+  mozilla::DropJSObjects(this);
+}
+
+// This method isn't automatically forwarded safely because it's notxpcom, so
+// the IDL binding doesn't know what value to return.
+NS_IMETHODIMP_(bool)
+nsInProcessTabChildGlobal::MarkForCC()
+{
+  MarkScopesForCC();
+  return mMessageManager ? mMessageManager->MarkForCC() : false;
+}
+
+nsresult
+nsInProcessTabChildGlobal::Init()
+{
+#ifdef DEBUG
+  nsresult rv =
+#endif
+  InitTabChildGlobal();
+  NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
+                       "Couldn't initialize nsInProcessTabChildGlobal");
+  mMessageManager = new nsFrameMessageManager(this,
+                                              nullptr,
+                                              dom::ipc::MM_CHILD);
+  return NS_OK;
+}
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(nsInProcessTabChildGlobal)
+
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsInProcessTabChildGlobal,
+                                                  DOMEventTargetHelper)
+   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMessageManager)
+   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
+   tmp->TraverseHostObjectURIs(cb);
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(nsInProcessTabChildGlobal,
+                                               DOMEventTargetHelper)
+  tmp->nsMessageManagerScriptExecutor::Trace(aCallbacks, aClosure);
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsInProcessTabChildGlobal,
+                                                DOMEventTargetHelper)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mMessageManager)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mAnonymousGlobalScopes)
+   tmp->UnlinkHostObjectURIs();
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(nsInProcessTabChildGlobal)
+  NS_INTERFACE_MAP_ENTRY(nsIMessageListenerManager)
+  NS_INTERFACE_MAP_ENTRY(nsIMessageSender)
+  NS_INTERFACE_MAP_ENTRY(nsISyncMessageSender)
+  NS_INTERFACE_MAP_ENTRY(nsIContentFrameMessageManager)
+  NS_INTERFACE_MAP_ENTRY(nsIInProcessContentFrameMessageManager)
+  NS_INTERFACE_MAP_ENTRY(nsIScriptObjectPrincipal)
+  NS_INTERFACE_MAP_ENTRY(nsIGlobalObject)
+  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+  NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(ContentFrameMessageManager)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+NS_IMPL_ADDREF_INHERITED(nsInProcessTabChildGlobal, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(nsInProcessTabChildGlobal, DOMEventTargetHelper)
+
+void
+nsInProcessTabChildGlobal::CacheFrameLoader(nsIFrameLoader* aFrameLoader)
+{
+  mFrameLoader = aFrameLoader;
+}
+
+NS_IMETHODIMP
+nsInProcessTabChildGlobal::GetContent(mozIDOMWindowProxy** aContent)
+{
+  *aContent = nullptr;
+  if (!mDocShell) {
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsPIDOMWindowOuter> window = mDocShell->GetWindow();
+  window.forget(aContent);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsInProcessTabChildGlobal::GetDocShell(nsIDocShell** aDocShell)
+{
+  NS_IF_ADDREF(*aDocShell = mDocShell);
+  return NS_OK;
+}
+
+void
+nsInProcessTabChildGlobal::FireUnloadEvent()
+{
+  // We're called from nsDocument::MaybeInitializeFinalizeFrameLoaders, so it
+  // should be safe to run script.
+  MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
+
+  // Don't let the unload event propagate to chrome event handlers.
+  mPreventEventsEscaping = true;
+  DOMEventTargetHelper::DispatchTrustedEvent(NS_LITERAL_STRING("unload"));
+
+  // Allow events fired during docshell destruction (pagehide, unload) to
+  // propagate to the <browser> element since chrome code depends on this.
+  mPreventEventsEscaping = false;
+}
+
+void
+nsInProcessTabChildGlobal::DisconnectEventListeners()
+{
+  if (mDocShell) {
+    if (nsCOMPtr<nsPIDOMWindowOuter> win = mDocShell->GetWindow()) {
+      MOZ_ASSERT(win->IsOuterWindow());
+      win->SetChromeEventHandler(win->GetChromeEventHandler());
+    }
+  }
+  if (mListenerManager) {
+    mListenerManager->Disconnect();
+  }
+
+  mDocShell = nullptr;
+}
+
+void
+nsInProcessTabChildGlobal::Disconnect()
+{
+  mChromeMessageManager = nullptr;
+  mOwner = nullptr;
+  if (mMessageManager) {
+    static_cast<nsFrameMessageManager*>(mMessageManager.get())->Disconnect();
+    mMessageManager = nullptr;
+  }
+}
+
+NS_IMETHODIMP_(nsIContent *)
+nsInProcessTabChildGlobal::GetOwnerContent()
+{
+  return mOwner;
+}
+
+nsresult
+nsInProcessTabChildGlobal::PreHandleEvent(EventChainPreVisitor& aVisitor)
+{
+  aVisitor.mForceContentDispatch = true;
+  aVisitor.mCanHandle = true;
+
+#ifdef DEBUG
+  if (mOwner) {
+    nsCOMPtr<nsIFrameLoaderOwner> owner = do_QueryInterface(mOwner);
+    RefPtr<nsFrameLoader> fl = owner->GetFrameLoader();
+    if (fl) {
+      NS_ASSERTION(this == fl->GetTabChildGlobalAsEventTarget(),
+                   "Wrong event target!");
+      NS_ASSERTION(fl->mMessageManager == mChromeMessageManager,
+                   "Wrong message manager!");
+    }
+  }
+#endif
+
+  if (mPreventEventsEscaping) {
+    aVisitor.mParentTarget = nullptr;
+    return NS_OK;
+  }
+
+  if (mIsBrowserOrAppFrame &&
+      (!mOwner || !nsContentUtils::IsInChromeDocshell(mOwner->OwnerDoc()))) {
+    if (mOwner) {
+      if (nsPIDOMWindowInner* innerWindow = mOwner->OwnerDoc()->GetInnerWindow()) {
+        aVisitor.mParentTarget = innerWindow->GetParentTarget();
+      }
+    }
+  } else {
+    aVisitor.mParentTarget = mOwner;
+  }
+
+  return NS_OK;
+}
+
+nsresult
+nsInProcessTabChildGlobal::InitTabChildGlobal()
+{
+  // If you change this, please change GetCompartmentName() in XPCJSContext.cpp
+  // accordingly.
+  nsAutoCString id;
+  id.AssignLiteral("inProcessTabChildGlobal");
+  nsIURI* uri = mOwner->OwnerDoc()->GetDocumentURI();
+  if (uri) {
+    nsAutoCString u;
+    nsresult rv = uri->GetSpec(u);
+    NS_ENSURE_SUCCESS(rv, rv);
+    id.AppendLiteral("?ownedBy=");
+    id.Append(u);
+  }
+  nsISupports* scopeSupports = NS_ISUPPORTS_CAST(EventTarget*, this);
+  NS_ENSURE_STATE(InitChildGlobalInternal(scopeSupports, id));
+  return NS_OK;
+}
+
+class nsAsyncScriptLoad : public Runnable
+{
+public:
+    nsAsyncScriptLoad(nsInProcessTabChildGlobal* aTabChild, const nsAString& aURL,
+                      bool aRunInGlobalScope)
+      : mTabChild(aTabChild), mURL(aURL), mRunInGlobalScope(aRunInGlobalScope) {}
+
+  NS_IMETHOD Run() override
+  {
+    mTabChild->LoadFrameScript(mURL, mRunInGlobalScope);
+    return NS_OK;
+  }
+  RefPtr<nsInProcessTabChildGlobal> mTabChild;
+  nsString mURL;
+  bool mRunInGlobalScope;
+};
+
+void
+nsInProcessTabChildGlobal::LoadFrameScript(const nsAString& aURL, bool aRunInGlobalScope)
+{
+  if (!nsContentUtils::IsSafeToRunScript()) {
+    nsContentUtils::AddScriptRunner(new nsAsyncScriptLoad(this, aURL, aRunInGlobalScope));
+    return;
+  }
+  if (!mInitialized) {
+    mInitialized = true;
+    Init();
+  }
+  bool tmp = mLoadingScript;
+  mLoadingScript = true;
+  LoadScriptInternal(aURL, aRunInGlobalScope);
+  mLoadingScript = tmp;
+}
+
+already_AddRefed<nsIFrameLoader>
+nsInProcessTabChildGlobal::GetFrameLoader()
+{
+  nsCOMPtr<nsIFrameLoaderOwner> owner = do_QueryInterface(mOwner);
+  nsCOMPtr<nsIFrameLoader> fl = owner ? owner->GetFrameLoader() : nullptr;
+  if (!fl) {
+    fl = mFrameLoader;
+  }
+  return fl.forget();
+}
-- 
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