Remove MOZ_B2G leftovers and some dead B2G-only components.

1 files changed, 0 insertions, 562 deletions

diff --git a/dom/inputmethod/HardwareKeyHandler.cpp b/dom/inputmethod/HardwareKeyHandler.cpp
deleted file mode 100644
index 737c30e5b..000000000
--- a/dom/inputmethod/HardwareKeyHandler.cpp
+++ /dev/null
@@ -1,562 +0,0 @@
-/* -*- 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 "HardwareKeyHandler.h"
-#include "mozilla/BasicEvents.h"
-#include "mozilla/ClearOnShutdown.h"
-#include "mozilla/dom/KeyboardEvent.h"
-#include "mozilla/dom/TabParent.h"
-#include "mozilla/EventDispatcher.h"
-#include "mozilla/EventStateManager.h"
-#include "mozilla/TextEvents.h"
-#include "nsDeque.h"
-#include "nsFocusManager.h"
-#include "nsFrameLoader.h"
-#include "nsIContent.h"
-#include "nsIDOMHTMLDocument.h"
-#include "nsIDOMHTMLElement.h"
-#include "nsPIDOMWindow.h"
-#include "nsPresContext.h"
-#include "nsPresShell.h"
-
-namespace mozilla {
-
-using namespace dom;
-
-NS_IMPL_ISUPPORTS(HardwareKeyHandler, nsIHardwareKeyHandler)
-
-StaticRefPtr<HardwareKeyHandler> HardwareKeyHandler::sInstance;
-
-HardwareKeyHandler::HardwareKeyHandler()
-  : mInputMethodAppConnected(false)
-{
-}
-
-HardwareKeyHandler::~HardwareKeyHandler()
-{
-}
-
-NS_IMETHODIMP
-HardwareKeyHandler::OnInputMethodAppConnected()
-{
-  if (NS_WARN_IF(mInputMethodAppConnected)) {
-    return NS_ERROR_UNEXPECTED;
-  }
-
-  mInputMethodAppConnected = true;
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-HardwareKeyHandler::OnInputMethodAppDisconnected()
-{
-  if (NS_WARN_IF(!mInputMethodAppConnected)) {
-    return NS_ERROR_UNEXPECTED;
-  }
-
-  mInputMethodAppConnected = false;
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-HardwareKeyHandler::RegisterListener(nsIHardwareKeyEventListener* aListener)
-{
-  // Make sure the listener is not nullptr and there is no available
-  // hardwareKeyEventListener now
-  if (NS_WARN_IF(!aListener)) {
-    return NS_ERROR_NULL_POINTER;
-  }
-
-  if (NS_WARN_IF(mHardwareKeyEventListener)) {
-    return NS_ERROR_ALREADY_INITIALIZED;
-  }
-
-  mHardwareKeyEventListener = do_GetWeakReference(aListener);
-
-  if (NS_WARN_IF(!mHardwareKeyEventListener)) {
-    return NS_ERROR_NULL_POINTER;
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-HardwareKeyHandler::UnregisterListener()
-{
-  // Clear the HardwareKeyEventListener
-  mHardwareKeyEventListener = nullptr;
-  return NS_OK;
-}
-
-bool
-HardwareKeyHandler::ForwardKeyToInputMethodApp(nsINode* aTarget,
-                                               WidgetKeyboardEvent* aEvent,
-                                               nsEventStatus* aEventStatus)
-{
-  MOZ_ASSERT(aTarget, "No target provided");
-  MOZ_ASSERT(aEvent, "No event provided");
-
-  // No need to forward hardware key event to IME
-  // if key's defaultPrevented is true
-  if (aEvent->mFlags.mDefaultPrevented) {
-    return false;
-  }
-
-  // No need to forward hardware key event to IME if IME is disabled
-  if (!mInputMethodAppConnected) {
-    return false;
-  }
-
-  // No need to forward hardware key event to IME
-  // if this key event is generated by IME itself(from nsITextInputProcessor)
-  if (aEvent->mIsSynthesizedByTIP) {
-    return false;
-  }
-
-  // No need to forward hardware key event to IME
-  // if the key event is handling or already handled
-  if (aEvent->mInputMethodAppState != WidgetKeyboardEvent::eNotHandled) {
-    return false;
-  }
-
-  // No need to forward hardware key event to IME
-  // if there is no nsIHardwareKeyEventListener in use
-  nsCOMPtr<nsIHardwareKeyEventListener>
-    keyHandler(do_QueryReferent(mHardwareKeyEventListener));
-  if (!keyHandler) {
-    return false;
-  }
-
-  // Set the flags to specify the keyboard event is in forwarding phase.
-  aEvent->mInputMethodAppState = WidgetKeyboardEvent::eHandling;
-
-  // For those keypress events coming after their heading keydown's reply
-  // already arrives, they should be dispatched directly instead of
-  // being stored into the event queue. Otherwise, without the heading keydown
-  // in the event queue, the stored keypress will never be withdrawn to be fired.
-  if (aEvent->mMessage == eKeyPress && mEventQueue.IsEmpty()) {
-    DispatchKeyPress(aTarget, *aEvent, *aEventStatus);
-    return true;
-  }
-
-  // Push the key event into queue for reuse when its reply arrives.
-  KeyboardInfo* copiedInfo =
-    new KeyboardInfo(aTarget,
-                     *aEvent,
-                     aEventStatus ? *aEventStatus : nsEventStatus_eIgnore);
-
-  // No need to forward hardware key event to IME if the event queue is full
-  if (!mEventQueue.Push(copiedInfo)) {
-    delete copiedInfo;
-    return false;
-  }
-
-  // We only forward keydown and keyup event to input-method-app
-  // because input-method-app will generate keypress by itself.
-  if (aEvent->mMessage == eKeyPress) {
-    return true;
-  }
-
-  // Create a keyboard event to pass into
-  // nsIHardwareKeyEventListener.onHardwareKey
-  nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
-  nsPresContext* presContext = GetPresContext(aTarget);
-  RefPtr<KeyboardEvent> keyboardEvent =
-    NS_NewDOMKeyboardEvent(eventTarget, presContext, aEvent->AsKeyboardEvent());
-  // Duplicate the internal event data in the heap for the keyboardEvent,
-  // or the internal data from |aEvent| in the stack may be destroyed by others.
-  keyboardEvent->DuplicatePrivateData();
-
-  // Forward the created keyboard event to input-method-app
-  bool isSent = false;
-  keyHandler->OnHardwareKey(keyboardEvent, &isSent);
-
-  // Pop the pending key event if it can't be forwarded
-  if (!isSent) {
-    mEventQueue.RemoveFront();
-  }
-
-  return isSent;
-}
-
-NS_IMETHODIMP
-HardwareKeyHandler::OnHandledByInputMethodApp(const nsAString& aType,
-                                              uint16_t aDefaultPrevented)
-{
-  // We can not handle this reply because the pending events had been already
-  // removed from the forwarding queue before this reply arrives.
-  if (mEventQueue.IsEmpty()) {
-    return NS_OK;
-  }
-
-  RefPtr<KeyboardInfo> keyInfo = mEventQueue.PopFront();
-
-  // Only allow keydown and keyup to call this method
-  if (NS_WARN_IF(aType.EqualsLiteral("keydown") &&
-                 keyInfo->mEvent.mMessage != eKeyDown) ||
-      NS_WARN_IF(aType.EqualsLiteral("keyup") &&
-                 keyInfo->mEvent.mMessage != eKeyUp)) {
-    return NS_ERROR_INVALID_ARG;
-  }
-
-  // The value of defaultPrevented depends on whether or not
-  // the key is consumed by input-method-app
-  SetDefaultPrevented(keyInfo->mEvent, aDefaultPrevented);
-
-  // Set the flag to specify the reply phase
-  keyInfo->mEvent.mInputMethodAppState = WidgetKeyboardEvent::eHandled;
-
-  // Check whether the event is still valid to be fired
-  if (CanDispatchEvent(keyInfo->mTarget, keyInfo->mEvent)) {
-    // If the key's defaultPrevented is true, it means that the
-    // input-method-app has already consumed this key,
-    // so we can dispatch |mozbrowserafterkey*| directly if
-    // preference "dom.beforeAfterKeyboardEvent.enabled" is enabled.
-    if (keyInfo->mEvent.mFlags.mDefaultPrevented) {
-      DispatchAfterKeyEvent(keyInfo->mTarget, keyInfo->mEvent);
-    // Otherwise, it means that input-method-app doesn't handle this key,
-    // so we need to dispatch it to its current event target.
-    } else {
-      DispatchToTargetApp(keyInfo->mTarget,
-                          keyInfo->mEvent,
-                          keyInfo->mStatus);
-    }
-  }
-
-  // No need to do further processing if the event is not keydown
-  if (keyInfo->mEvent.mMessage != eKeyDown) {
-    return NS_OK;
-  }
-
-  // Update the latest keydown data:
-  //   Release the holding reference to the previous keydown's data and
-  //   add a reference count to the current keydown's data.
-  mLatestKeyDownInfo = keyInfo;
-
-  // Handle the pending keypress event once keydown's reply arrives:
-  // It may have many keypress events per keydown on some platforms,
-  // so we use loop to dispatch keypress events.
-  // (But Gonk dispatch only one keypress per keydown)
-  // However, if there is no keypress after this keydown,
-  // then those following keypress will be handled in
-  // ForwardKeyToInputMethodApp directly.
-  for (KeyboardInfo* keypressInfo;
-       !mEventQueue.IsEmpty() &&
-       (keypressInfo = mEventQueue.PeekFront()) &&
-       keypressInfo->mEvent.mMessage == eKeyPress;
-       mEventQueue.RemoveFront()) {
-    DispatchKeyPress(keypressInfo->mTarget,
-                     keypressInfo->mEvent,
-                     keypressInfo->mStatus);
-  }
-
-  return NS_OK;
-}
-
-bool
-HardwareKeyHandler::DispatchKeyPress(nsINode* aTarget,
-                                     WidgetKeyboardEvent& aEvent,
-                                     nsEventStatus& aStatus)
-{
-  MOZ_ASSERT(aTarget, "No target provided");
-  MOZ_ASSERT(aEvent.mMessage == eKeyPress, "Event is not keypress");
-
-  // No need to dispatch keypress to the event target
-  // if the keydown event is consumed by the input-method-app.
-  if (mLatestKeyDownInfo &&
-      mLatestKeyDownInfo->mEvent.mFlags.mDefaultPrevented) {
-    return false;
-  }
-
-  // No need to dispatch keypress to the event target
-  // if the previous keydown event is modifier key's
-  if (mLatestKeyDownInfo &&
-      mLatestKeyDownInfo->mEvent.IsModifierKeyEvent()) {
-    return false;
-  }
-
-  // No need to dispatch keypress to the event target
-  // if it's invalid to be dispatched
-  if (!CanDispatchEvent(aTarget, aEvent)) {
-    return false;
-  }
-
-  // Set the flag to specify the reply phase.
-  aEvent.mInputMethodAppState = WidgetKeyboardEvent::eHandled;
-
-  // Dispatch the pending keypress event
-  bool ret = DispatchToTargetApp(aTarget, aEvent, aStatus);
-
-  // Re-trigger EventStateManager::PostHandleKeyboardEvent for keypress
-  PostHandleKeyboardEvent(aTarget, aEvent, aStatus);
-
-  return ret;
-}
-
-void
-HardwareKeyHandler::DispatchAfterKeyEvent(nsINode* aTarget,
-                                          WidgetKeyboardEvent& aEvent)
-{
-  MOZ_ASSERT(aTarget, "No target provided");
-
-  if (!PresShell::BeforeAfterKeyboardEventEnabled() ||
-      aEvent.mMessage == eKeyPress) {
-    return;
-  }
-
-  nsCOMPtr<nsIPresShell> presShell = GetPresShell(aTarget);
-  if (NS_WARN_IF(presShell)) {
-    presShell->DispatchAfterKeyboardEvent(aTarget,
-                                          aEvent,
-                                          aEvent.mFlags.mDefaultPrevented);
-  }
-}
-
-bool
-HardwareKeyHandler::DispatchToTargetApp(nsINode* aTarget,
-                                        WidgetKeyboardEvent& aEvent,
-                                        nsEventStatus& aStatus)
-{
-  MOZ_ASSERT(aTarget, "No target provided");
-
-  // Get current focused element as the event target
-  nsCOMPtr<nsIContent> currentTarget = GetCurrentTarget();
-  if (NS_WARN_IF(!currentTarget)) {
-    return false;
-  }
-
-  // The event target should be set to the current focused element.
-  // However, it might have security issue if the event is dispatched to
-  // the unexpected application, and it might cause unexpected operation
-  // in the new app.
-  nsCOMPtr<nsPIDOMWindowOuter> originalRootWindow = GetRootWindow(aTarget);
-  nsCOMPtr<nsPIDOMWindowOuter> currentRootWindow = GetRootWindow(currentTarget);
-  if (currentRootWindow != originalRootWindow) {
-    NS_WARNING("The root window is changed during the event is dispatching");
-    return false;
-  }
-
-  // If the current focused element is still in the same app,
-  // then we can use it as the current target to dispatch event.
-  nsCOMPtr<nsIPresShell> presShell = GetPresShell(currentTarget);
-  if (!presShell) {
-    return false;
-  }
-
-  if (!presShell->CanDispatchEvent(&aEvent)) {
-    return false;
-  }
-
-  // In-process case: the event target is in the current process
-  if (!PresShell::IsTargetIframe(currentTarget)) {
-    DispatchToCurrentProcess(presShell, currentTarget, aEvent, aStatus);
-
-    if (presShell->CanDispatchEvent(&aEvent)) {
-      DispatchAfterKeyEvent(aTarget, aEvent);
-    }
-
-    return true;
-  }
-
-  // OOP case: the event target is in the child process
-  return DispatchToCrossProcess(aTarget, aEvent);
-
-  // After the oop target receives the event from TabChild::RecvRealKeyEvent
-  // and return the result through TabChild::SendDispatchAfterKeyboardEvent,
-  // the |mozbrowserafterkey*| will be fired from
-  // TabParent::RecvDispatchAfterKeyboardEvent, so we don't need to dispatch
-  // |mozbrowserafterkey*| by ourselves in this module.
-}
-
-void
-HardwareKeyHandler::DispatchToCurrentProcess(nsIPresShell* presShell,
-                                             nsIContent* aTarget,
-                                             WidgetKeyboardEvent& aEvent,
-                                             nsEventStatus& aStatus)
-{
-  EventDispatcher::Dispatch(aTarget, presShell->GetPresContext(),
-                            &aEvent, nullptr, &aStatus, nullptr);
-}
-
-bool
-HardwareKeyHandler::DispatchToCrossProcess(nsINode* aTarget,
-                                           WidgetKeyboardEvent& aEvent)
-{
-  nsCOMPtr<nsIFrameLoaderOwner> remoteLoaderOwner = do_QueryInterface(aTarget);
-  if (NS_WARN_IF(!remoteLoaderOwner)) {
-    return false;
-  }
-
-  RefPtr<nsFrameLoader> remoteFrameLoader =
-    remoteLoaderOwner->GetFrameLoader();
-  if (NS_WARN_IF(!remoteFrameLoader)) {
-    return false;
-  }
-
-  uint32_t eventMode;
-  remoteFrameLoader->GetEventMode(&eventMode);
-  if (eventMode == nsIFrameLoader::EVENT_MODE_DONT_FORWARD_TO_CHILD) {
-    return false;
-  }
-
-  PBrowserParent* remoteBrowser = remoteFrameLoader->GetRemoteBrowser();
-  TabParent* remote = static_cast<TabParent*>(remoteBrowser);
-  if (NS_WARN_IF(!remote)) {
-    return false;
-  }
-
-  return remote->SendRealKeyEvent(aEvent);
-}
-
-void
-HardwareKeyHandler::PostHandleKeyboardEvent(nsINode* aTarget,
-                                            WidgetKeyboardEvent& aEvent,
-                                            nsEventStatus& aStatus)
-{
-  MOZ_ASSERT(aTarget, "No target provided");
-
-  nsPresContext* presContext = GetPresContext(aTarget);
-
-  RefPtr<mozilla::EventStateManager> esm = presContext->EventStateManager();
-  bool dispatchedToChildProcess = PresShell::IsTargetIframe(aTarget);
-  esm->PostHandleKeyboardEvent(&aEvent, aStatus, dispatchedToChildProcess);
-}
-
-void
-HardwareKeyHandler::SetDefaultPrevented(WidgetKeyboardEvent& aEvent,
-                                        uint16_t aDefaultPrevented) {
-  if (aDefaultPrevented & DEFAULT_PREVENTED) {
-    aEvent.mFlags.mDefaultPrevented = true;
-  }
-
-  if (aDefaultPrevented & DEFAULT_PREVENTED_BY_CHROME) {
-    aEvent.mFlags.mDefaultPreventedByChrome = true;
-  }
-
-  if (aDefaultPrevented & DEFAULT_PREVENTED_BY_CONTENT) {
-    aEvent.mFlags.mDefaultPreventedByContent = true;
-  }
-}
-
-bool
-HardwareKeyHandler::CanDispatchEvent(nsINode* aTarget,
-                                     WidgetKeyboardEvent& aEvent)
-{
-  nsCOMPtr<nsIPresShell> presShell = GetPresShell(aTarget);
-  if (NS_WARN_IF(!presShell)) {
-    return false;
-  }
-  return presShell->CanDispatchEvent(&aEvent);
-}
-
-already_AddRefed<nsPIDOMWindowOuter>
-HardwareKeyHandler::GetRootWindow(nsINode* aNode)
-{
-  // Get nsIPresShell's pointer first
-  nsCOMPtr<nsIPresShell> presShell = GetPresShell(aNode);
-  if (NS_WARN_IF(!presShell)) {
-    return nullptr;
-  }
-  nsCOMPtr<nsPIDOMWindowOuter> rootWindow = presShell->GetRootWindow();
-  return rootWindow.forget();
-}
-
-already_AddRefed<nsIContent>
-HardwareKeyHandler::GetCurrentTarget()
-{
-  nsFocusManager* fm = nsFocusManager::GetFocusManager();
-  if (NS_WARN_IF(!fm)) {
-    return nullptr;
-  }
-
-  nsCOMPtr<mozIDOMWindowProxy> focusedWindow;
-  fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
-  if (NS_WARN_IF(!focusedWindow)) {
-    return nullptr;
-  }
-
-  auto* ourWindow = nsPIDOMWindowOuter::From(focusedWindow);
-
-  nsCOMPtr<nsPIDOMWindowOuter> rootWindow = ourWindow->GetPrivateRoot();
-  if (NS_WARN_IF(!rootWindow)) {
-    return nullptr;
-  }
-
-  nsCOMPtr<nsPIDOMWindowOuter> focusedFrame;
-  nsCOMPtr<nsIContent> focusedContent =
-    fm->GetFocusedDescendant(rootWindow, true, getter_AddRefs(focusedFrame));
-
-  // If there is no focus, then we use document body instead
-  if (NS_WARN_IF(!focusedContent || !focusedContent->GetPrimaryFrame())) {
-    nsIDocument* document = ourWindow->GetExtantDoc();
-    if (NS_WARN_IF(!document)) {
-      return nullptr;
-    }
-
-    focusedContent = document->GetRootElement();
-
-    nsCOMPtr<nsIDOMHTMLDocument> htmlDocument = do_QueryInterface(document);
-    if (htmlDocument) {
-      nsCOMPtr<nsIDOMHTMLElement> body;
-      htmlDocument->GetBody(getter_AddRefs(body));
-      nsCOMPtr<nsIContent> bodyContent = do_QueryInterface(body);
-      if (bodyContent) {
-        focusedContent = bodyContent;
-      }
-    }
-  }
-
-  return focusedContent ? focusedContent.forget() : nullptr;
-}
-
-nsPresContext*
-HardwareKeyHandler::GetPresContext(nsINode* aNode)
-{
-  // Get nsIPresShell's pointer first
-  nsCOMPtr<nsIPresShell> presShell = GetPresShell(aNode);
-  if (NS_WARN_IF(!presShell)) {
-    return nullptr;
-  }
-
-  // then use nsIPresShell to get nsPresContext's pointer
-  return presShell->GetPresContext();
-}
-
-already_AddRefed<nsIPresShell>
-HardwareKeyHandler::GetPresShell(nsINode* aNode)
-{
-  nsIDocument* doc = aNode->OwnerDoc();
-  if (NS_WARN_IF(!doc)) {
-    return nullptr;
-  }
-
-  nsCOMPtr<nsIPresShell> presShell = doc->GetShell();
-  if (NS_WARN_IF(!presShell)) {
-    return nullptr;
-  }
-
-  return presShell.forget();
-}
-
-/* static */
-already_AddRefed<HardwareKeyHandler>
-HardwareKeyHandler::GetInstance()
-{
-  if (!XRE_IsParentProcess()) {
-    return nullptr;
-  }
-
-  if (!sInstance) {
-    sInstance = new HardwareKeyHandler();
-    ClearOnShutdown(&sInstance);
-  }
-
-  RefPtr<HardwareKeyHandler> service = sInstance.get();
-  return service.forget();
-}
-
-} // namespace mozilla