widget/PuppetWidget.cpp
author Rob Wu <rob@robwu.nl>
Sat, 24 Sep 2016 11:16:32 +0200
changeset 320058 a41f871e2d1b37754bbd1001c36c075511b49342
parent 315512 853d4b8a9fde261131ad00286c010fd299ab4e61
permissions -rw-r--r--
Bug 1299411 - Decouple Port implementation from API r=aswan Decoupled the API from the implementation. From now on it is possible to create Port instances without generating an API. This allows us to internally use Ports to pass around messages with minimal overhead (in the form of unnecessary clones of messages). This will be used by native messaging. This commit has no behavioral change, it is mostly moving around some code and storing the internal message listener in a set. MozReview-Commit-ID: 4h0LNJvTH9R

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
 */
/* 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 "base/basictypes.h"

#include "ClientLayerManager.h"
#include "gfxPlatform.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/Hal.h"
#include "mozilla/IMEStateManager.h"
#include "mozilla/layers/APZChild.h"
#include "mozilla/layers/PLayerTransactionChild.h"
#include "mozilla/Preferences.h"
#include "mozilla/TextComposition.h"
#include "mozilla/TextEvents.h"
#include "mozilla/Unused.h"
#include "PuppetWidget.h"
#include "nsContentUtils.h"
#include "nsIWidgetListener.h"
#include "imgIContainer.h"
#include "nsView.h"

using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::hal;
using namespace mozilla::gfx;
using namespace mozilla::layers;
using namespace mozilla::widget;

static void
InvalidateRegion(nsIWidget* aWidget, const LayoutDeviceIntRegion& aRegion)
{
  for (auto iter = aRegion.RectIter(); !iter.Done(); iter.Next()) {
    aWidget->Invalidate(iter.Get());
  }
}

/*static*/ already_AddRefed<nsIWidget>
nsIWidget::CreatePuppetWidget(TabChild* aTabChild)
{
  MOZ_ASSERT(!aTabChild || nsIWidget::UsePuppetWidgets(),
             "PuppetWidgets not allowed in this configuration");

  nsCOMPtr<nsIWidget> widget = new PuppetWidget(aTabChild);
  return widget.forget();
}

namespace mozilla {
namespace widget {

static bool
IsPopup(const nsWidgetInitData* aInitData)
{
  return aInitData && aInitData->mWindowType == eWindowType_popup;
}

static bool
MightNeedIMEFocus(const nsWidgetInitData* aInitData)
{
  // In the puppet-widget world, popup widgets are just dummies and
  // shouldn't try to mess with IME state.
#ifdef MOZ_CROSS_PROCESS_IME
  return !IsPopup(aInitData);
#else
  return false;
#endif
}

// Arbitrary, fungible.
const size_t PuppetWidget::kMaxDimension = 4000;

NS_IMPL_ISUPPORTS_INHERITED0(PuppetWidget, nsBaseWidget)

PuppetWidget::PuppetWidget(TabChild* aTabChild)
  : mTabChild(aTabChild)
  , mMemoryPressureObserver(nullptr)
  , mDPI(-1)
  , mRounding(-1)
  , mDefaultScale(-1)
  , mCursorHotspotX(0)
  , mCursorHotspotY(0)
  , mNativeKeyCommandsValid(false)
{
  MOZ_COUNT_CTOR(PuppetWidget);

  mSingleLineCommands.SetCapacity(4);
  mMultiLineCommands.SetCapacity(4);
  mRichTextCommands.SetCapacity(4);

  // Setting 'Unknown' means "not yet cached".
  mInputContext.mIMEState.mEnabled = IMEState::UNKNOWN;
}

PuppetWidget::~PuppetWidget()
{
  MOZ_COUNT_DTOR(PuppetWidget);

  Destroy();
}

void
PuppetWidget::InfallibleCreate(nsIWidget* aParent,
                               nsNativeWidget aNativeParent,
                               const LayoutDeviceIntRect& aRect,
                               nsWidgetInitData* aInitData)
{
  MOZ_ASSERT(!aNativeParent, "got a non-Puppet native parent");

  BaseCreate(nullptr, aInitData);

  mBounds = aRect;
  mEnabled = true;
  mVisible = true;

  mDrawTarget = gfxPlatform::GetPlatform()->
    CreateOffscreenContentDrawTarget(IntSize(1, 1), SurfaceFormat::B8G8R8A8);

  mNeedIMEStateInit = MightNeedIMEFocus(aInitData);

  PuppetWidget* parent = static_cast<PuppetWidget*>(aParent);
  if (parent) {
    parent->SetChild(this);
    mLayerManager = parent->GetLayerManager();
  }
  else {
    Resize(mBounds.x, mBounds.y, mBounds.width, mBounds.height, false);
  }
  nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
  if (obs) {
    mMemoryPressureObserver = new MemoryPressureObserver(this);
    obs->AddObserver(mMemoryPressureObserver, "memory-pressure", false);
  }
}

nsresult
PuppetWidget::Create(nsIWidget* aParent,
                     nsNativeWidget aNativeParent,
                     const LayoutDeviceIntRect& aRect,
                     nsWidgetInitData* aInitData)
{
  InfallibleCreate(aParent, aNativeParent, aRect, aInitData);
  return NS_OK;
}

void
PuppetWidget::InitIMEState()
{
  MOZ_ASSERT(mTabChild);
  if (mNeedIMEStateInit) {
    mContentCache.Clear();
    mTabChild->SendUpdateContentCache(mContentCache);
    mIMEPreferenceOfParent = nsIMEUpdatePreference();
    mNeedIMEStateInit = false;
  }
}

already_AddRefed<nsIWidget>
PuppetWidget::CreateChild(const LayoutDeviceIntRect& aRect,
                          nsWidgetInitData* aInitData,
                          bool aForceUseIWidgetParent)
{
  bool isPopup = IsPopup(aInitData);
  nsCOMPtr<nsIWidget> widget = nsIWidget::CreatePuppetWidget(mTabChild);
  return ((widget &&
           NS_SUCCEEDED(widget->Create(isPopup ? nullptr: this, nullptr, aRect,
                                       aInitData))) ?
          widget.forget() : nullptr);
}

void
PuppetWidget::Destroy()
{
  if (mOnDestroyCalled) {
    return;
  }
  mOnDestroyCalled = true;

  Base::OnDestroy();
  Base::Destroy();
  mPaintTask.Revoke();
  if (mMemoryPressureObserver) {
    mMemoryPressureObserver->Remove();
  }
  mMemoryPressureObserver = nullptr;
  mChild = nullptr;
  if (mLayerManager) {
    mLayerManager->Destroy();
  }
  mLayerManager = nullptr;
  mTabChild = nullptr;
}

NS_IMETHODIMP
PuppetWidget::Show(bool aState)
{
  NS_ASSERTION(mEnabled,
               "does it make sense to Show()/Hide() a disabled widget?");

  bool wasVisible = mVisible;
  mVisible = aState;

  if (mChild) {
    mChild->mVisible = aState;
  }

  if (!wasVisible && mVisible) {
    Resize(mBounds.width, mBounds.height, false);
    Invalidate(mBounds);
  }

  return NS_OK;
}

NS_IMETHODIMP
PuppetWidget::Resize(double aWidth,
                     double aHeight,
                     bool   aRepaint)
{
  LayoutDeviceIntRect oldBounds = mBounds;
  mBounds.SizeTo(LayoutDeviceIntSize(NSToIntRound(aWidth),
                                     NSToIntRound(aHeight)));

  if (mChild) {
    return mChild->Resize(aWidth, aHeight, aRepaint);
  }

  // XXX: roc says that |aRepaint| dictates whether or not to
  // invalidate the expanded area
  if (oldBounds.Size() < mBounds.Size() && aRepaint) {
    LayoutDeviceIntRegion dirty(mBounds);
    dirty.Sub(dirty, oldBounds);
    InvalidateRegion(this, dirty);
  }

  // call WindowResized() on both the current listener, and possibly
  // also the previous one if we're in a state where we're drawing that one
  // because the current one is paint suppressed
  if (!oldBounds.IsEqualEdges(mBounds) && mAttachedWidgetListener) {
    if (GetCurrentWidgetListener() &&
        GetCurrentWidgetListener() != mAttachedWidgetListener) {
      GetCurrentWidgetListener()->WindowResized(this, mBounds.width, mBounds.height);
    }
    mAttachedWidgetListener->WindowResized(this, mBounds.width, mBounds.height);
  }

  return NS_OK;
}

nsresult
PuppetWidget::ConfigureChildren(const nsTArray<Configuration>& aConfigurations)
{
  for (uint32_t i = 0; i < aConfigurations.Length(); ++i) {
    const Configuration& configuration = aConfigurations[i];
    PuppetWidget* w = static_cast<PuppetWidget*>(configuration.mChild.get());
    NS_ASSERTION(w->GetParent() == this,
                 "Configured widget is not a child");
    w->SetWindowClipRegion(configuration.mClipRegion, true);
    LayoutDeviceIntRect bounds = w->GetBounds();
    if (bounds.Size() != configuration.mBounds.Size()) {
      w->Resize(configuration.mBounds.x, configuration.mBounds.y,
                configuration.mBounds.width, configuration.mBounds.height,
                true);
    } else if (bounds.TopLeft() != configuration.mBounds.TopLeft()) {
      w->Move(configuration.mBounds.x, configuration.mBounds.y);
    }
    w->SetWindowClipRegion(configuration.mClipRegion, false);
  }
  return NS_OK;
}

NS_IMETHODIMP
PuppetWidget::SetFocus(bool aRaise)
{
  if (aRaise && mTabChild) {
    mTabChild->SendRequestFocus(true);
  }

  return NS_OK;
}

NS_IMETHODIMP
PuppetWidget::Invalidate(const LayoutDeviceIntRect& aRect)
{
#ifdef DEBUG
  debug_DumpInvalidate(stderr, this, &aRect, "PuppetWidget", 0);
#endif

  if (mChild) {
    return mChild->Invalidate(aRect);
  }

  mDirtyRegion.Or(mDirtyRegion, aRect);

  if (!mDirtyRegion.IsEmpty() && !mPaintTask.IsPending()) {
    mPaintTask = new PaintTask(this);
    return NS_DispatchToCurrentThread(mPaintTask.get());
  }

  return NS_OK;
}

void
PuppetWidget::InitEvent(WidgetGUIEvent& event, LayoutDeviceIntPoint* aPoint)
{
  if (nullptr == aPoint) {
    event.mRefPoint = LayoutDeviceIntPoint(0, 0);
  } else {
    // use the point override if provided
    event.mRefPoint = *aPoint;
  }
  event.mTime = PR_Now() / 1000;
}

NS_IMETHODIMP
PuppetWidget::DispatchEvent(WidgetGUIEvent* event, nsEventStatus& aStatus)
{
#ifdef DEBUG
  debug_DumpEvent(stdout, event->mWidget, event, "PuppetWidget", 0);
#endif

  MOZ_ASSERT(!mChild || mChild->mWindowType == eWindowType_popup,
             "Unexpected event dispatch!");

  AutoCacheNativeKeyCommands autoCache(this);
  if (event->mFlags.mIsSynthesizedForTests && !mNativeKeyCommandsValid) {
    WidgetKeyboardEvent* keyEvent = event->AsKeyboardEvent();
    if (keyEvent) {
      mTabChild->RequestNativeKeyBindings(&autoCache, keyEvent);
    }
  }

  if (event->mClass == eCompositionEventClass) {
    // Store the latest native IME context of parent process's widget or
    // TextEventDispatcher if it's in this process.
    WidgetCompositionEvent* compositionEvent = event->AsCompositionEvent();
#ifdef DEBUG
    if (mNativeIMEContext.IsValid() &&
        mNativeIMEContext != compositionEvent->mNativeIMEContext) {
      RefPtr<TextComposition> composition =
        IMEStateManager::GetTextCompositionFor(this);
      MOZ_ASSERT(!composition,
        "When there is composition caused by old native IME context, "
        "composition events caused by different native IME context are not "
        "allowed");
    }
#endif // #ifdef DEBUG
    mNativeIMEContext = compositionEvent->mNativeIMEContext;
  }

  aStatus = nsEventStatus_eIgnore;

  if (GetCurrentWidgetListener()) {
    aStatus = GetCurrentWidgetListener()->HandleEvent(event, mUseAttachedEvents);
  }

  return NS_OK;
}

nsEventStatus
PuppetWidget::DispatchInputEvent(WidgetInputEvent* aEvent)
{
  if (!AsyncPanZoomEnabled()) {
    nsEventStatus status = nsEventStatus_eIgnore;
    DispatchEvent(aEvent, status);
    return status;
  }

  if (!mTabChild) {
    return nsEventStatus_eIgnore;
  }

  switch (aEvent->mClass) {
    case eWheelEventClass:
      Unused <<
        mTabChild->SendDispatchWheelEvent(*aEvent->AsWheelEvent());
      break;
    case eMouseEventClass:
      Unused <<
        mTabChild->SendDispatchMouseEvent(*aEvent->AsMouseEvent());
      break;
    case eKeyboardEventClass:
      Unused <<
        mTabChild->SendDispatchKeyboardEvent(*aEvent->AsKeyboardEvent());
      break;
    default:
      MOZ_ASSERT_UNREACHABLE("unsupported event type");
  }

  return nsEventStatus_eIgnore;
}

nsresult
PuppetWidget::SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout,
                                       int32_t aNativeKeyCode,
                                       uint32_t aModifierFlags,
                                       const nsAString& aCharacters,
                                       const nsAString& aUnmodifiedCharacters,
                                       nsIObserver* aObserver)
{
  AutoObserverNotifier notifier(aObserver, "keyevent");
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendSynthesizeNativeKeyEvent(aNativeKeyboardLayout, aNativeKeyCode,
    aModifierFlags, nsString(aCharacters), nsString(aUnmodifiedCharacters),
    notifier.SaveObserver());
  return NS_OK;
}

nsresult
PuppetWidget::SynthesizeNativeMouseEvent(mozilla::LayoutDeviceIntPoint aPoint,
                                         uint32_t aNativeMessage,
                                         uint32_t aModifierFlags,
                                         nsIObserver* aObserver)
{
  AutoObserverNotifier notifier(aObserver, "mouseevent");
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendSynthesizeNativeMouseEvent(aPoint, aNativeMessage,
    aModifierFlags, notifier.SaveObserver());
  return NS_OK;
}

nsresult
PuppetWidget::SynthesizeNativeMouseMove(mozilla::LayoutDeviceIntPoint aPoint,
                                        nsIObserver* aObserver)
{
  AutoObserverNotifier notifier(aObserver, "mousemove");
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendSynthesizeNativeMouseMove(aPoint, notifier.SaveObserver());
  return NS_OK;
}

nsresult
PuppetWidget::SynthesizeNativeMouseScrollEvent(mozilla::LayoutDeviceIntPoint aPoint,
                                               uint32_t aNativeMessage,
                                               double aDeltaX,
                                               double aDeltaY,
                                               double aDeltaZ,
                                               uint32_t aModifierFlags,
                                               uint32_t aAdditionalFlags,
                                               nsIObserver* aObserver)
{
  AutoObserverNotifier notifier(aObserver, "mousescrollevent");
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendSynthesizeNativeMouseScrollEvent(aPoint, aNativeMessage,
    aDeltaX, aDeltaY, aDeltaZ, aModifierFlags, aAdditionalFlags,
    notifier.SaveObserver());
  return NS_OK;
}

nsresult
PuppetWidget::SynthesizeNativeTouchPoint(uint32_t aPointerId,
                                         TouchPointerState aPointerState,
                                         LayoutDeviceIntPoint aPoint,
                                         double aPointerPressure,
                                         uint32_t aPointerOrientation,
                                         nsIObserver* aObserver)
{
  AutoObserverNotifier notifier(aObserver, "touchpoint");
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendSynthesizeNativeTouchPoint(aPointerId, aPointerState,
    aPoint, aPointerPressure, aPointerOrientation,
    notifier.SaveObserver());
  return NS_OK;
}

nsresult
PuppetWidget::SynthesizeNativeTouchTap(LayoutDeviceIntPoint aPoint,
                                       bool aLongTap,
                                       nsIObserver* aObserver)
{
  AutoObserverNotifier notifier(aObserver, "touchtap");
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendSynthesizeNativeTouchTap(aPoint, aLongTap,
    notifier.SaveObserver());
  return NS_OK;
}

nsresult
PuppetWidget::ClearNativeTouchSequence(nsIObserver* aObserver)
{
  AutoObserverNotifier notifier(aObserver, "cleartouch");
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendClearNativeTouchSequence(notifier.SaveObserver());
  return NS_OK;
}
 
void
PuppetWidget::SetConfirmedTargetAPZC(uint64_t aInputBlockId,
                                     const nsTArray<ScrollableLayerGuid>& aTargets) const
{
  if (mTabChild) {
    mTabChild->SetTargetAPZC(aInputBlockId, aTargets);
  }
}

void
PuppetWidget::UpdateZoomConstraints(const uint32_t& aPresShellId,
                                    const FrameMetrics::ViewID& aViewId,
                                    const Maybe<ZoomConstraints>& aConstraints)
{
  if (mTabChild) {
    mTabChild->DoUpdateZoomConstraints(aPresShellId, aViewId, aConstraints);
  }
}

bool
PuppetWidget::AsyncPanZoomEnabled() const
{
  return mTabChild && mTabChild->AsyncPanZoomEnabled();
}

NS_IMETHODIMP_(bool)
PuppetWidget::ExecuteNativeKeyBinding(NativeKeyBindingsType aType,
                                      const mozilla::WidgetKeyboardEvent& aEvent,
                                      DoCommandCallback aCallback,
                                      void* aCallbackData)
{
  // B2G doesn't have native key bindings.
#ifdef MOZ_WIDGET_GONK
  return false;
#else // #ifdef MOZ_WIDGET_GONK
  MOZ_ASSERT(mNativeKeyCommandsValid);

  const nsTArray<mozilla::CommandInt>* commands = nullptr;
  switch (aType) {
    case nsIWidget::NativeKeyBindingsForSingleLineEditor:
      commands = &mSingleLineCommands;
      break;
    case nsIWidget::NativeKeyBindingsForMultiLineEditor:
      commands = &mMultiLineCommands;
      break;
    case nsIWidget::NativeKeyBindingsForRichTextEditor:
      commands = &mRichTextCommands;
      break;
    default:
      MOZ_CRASH("Invalid type");
      break;
  }

  if (commands->IsEmpty()) {
    return false;
  }

  for (uint32_t i = 0; i < commands->Length(); i++) {
    aCallback(static_cast<mozilla::Command>((*commands)[i]), aCallbackData);
  }
  return true;
#endif
}

LayerManager*
PuppetWidget::GetLayerManager(PLayerTransactionChild* aShadowManager,
                              LayersBackend aBackendHint,
                              LayerManagerPersistence aPersistence)
{
  if (!mLayerManager) {
    mLayerManager = new ClientLayerManager(this);
  }
  ShadowLayerForwarder* lf = mLayerManager->AsShadowForwarder();
  if (!lf->HasShadowManager() && aShadowManager) {
    lf->SetShadowManager(aShadowManager);
  }
  return mLayerManager;
}

LayerManager*
PuppetWidget::RecreateLayerManager(PLayerTransactionChild* aShadowManager)
{
  mLayerManager = new ClientLayerManager(this);
  mLayerManager->AsShadowForwarder()->SetShadowManager(aShadowManager);
  return mLayerManager;
}

nsresult
PuppetWidget::RequestIMEToCommitComposition(bool aCancel)
{
#ifdef MOZ_CROSS_PROCESS_IME
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }

  MOZ_ASSERT(!Destroyed());

  // There must not be composition which is caused by the PuppetWidget instance.
  if (NS_WARN_IF(!mNativeIMEContext.IsValid())) {
    return NS_OK;
  }

  RefPtr<TextComposition> composition =
    IMEStateManager::GetTextCompositionFor(this);
  // This method shouldn't be called when there is no text composition instance.
  if (NS_WARN_IF(!composition)) {
    return NS_OK;
  }

  bool isCommitted = false;
  nsAutoString committedString;
  if (NS_WARN_IF(!mTabChild->SendRequestIMEToCommitComposition(
                               aCancel, &isCommitted, &committedString))) {
    return NS_ERROR_FAILURE;
  }

  // If the composition wasn't committed synchronously, we need to wait async
  // composition events for destroying the TextComposition instance.
  if (!isCommitted) {
    return NS_OK;
  }

  // Dispatch eCompositionCommit event.
  WidgetCompositionEvent compositionCommitEvent(true, eCompositionCommit, this);
  InitEvent(compositionCommitEvent, nullptr);
  compositionCommitEvent.mData = committedString;
  nsEventStatus status = nsEventStatus_eIgnore;
  DispatchEvent(&compositionCommitEvent, status);

  // NOTE: PuppetWidget might be destroyed already.

#endif // #ifdef MOZ_CROSS_PROCESS_IME

  return NS_OK;
}

nsresult
PuppetWidget::NotifyIMEInternal(const IMENotification& aIMENotification)
{
  switch (aIMENotification.mMessage) {
    case REQUEST_TO_COMMIT_COMPOSITION:
      return RequestIMEToCommitComposition(false);
    case REQUEST_TO_CANCEL_COMPOSITION:
      return RequestIMEToCommitComposition(true);
    case NOTIFY_IME_OF_FOCUS:
    case NOTIFY_IME_OF_BLUR:
      return NotifyIMEOfFocusChange(aIMENotification);
    case NOTIFY_IME_OF_SELECTION_CHANGE:
      return NotifyIMEOfSelectionChange(aIMENotification);
    case NOTIFY_IME_OF_TEXT_CHANGE:
      return NotifyIMEOfTextChange(aIMENotification);
    case NOTIFY_IME_OF_COMPOSITION_EVENT_HANDLED:
      return NotifyIMEOfCompositionUpdate(aIMENotification);
    case NOTIFY_IME_OF_MOUSE_BUTTON_EVENT:
      return NotifyIMEOfMouseButtonEvent(aIMENotification);
    case NOTIFY_IME_OF_POSITION_CHANGE:
      return NotifyIMEOfPositionChange(aIMENotification);
    default:
      return NS_ERROR_NOT_IMPLEMENTED;
  }
}

NS_IMETHODIMP
PuppetWidget::StartPluginIME(const mozilla::WidgetKeyboardEvent& aKeyboardEvent,
                             int32_t aPanelX, int32_t aPanelY,
                             nsString& aCommitted)
{
  if (!mTabChild ||
      !mTabChild->SendStartPluginIME(aKeyboardEvent, aPanelX,
                                     aPanelY, &aCommitted)) {
    return NS_ERROR_FAILURE;
  }
  return NS_OK;
}

void
PuppetWidget::SetPluginFocused(bool& aFocused)
{
  if (mTabChild) {
    mTabChild->SendSetPluginFocused(aFocused);
  }
}

void
PuppetWidget::DefaultProcOfPluginEvent(const WidgetPluginEvent& aEvent)
{
  if (!mTabChild) {
    return;
  }
  mTabChild->SendDefaultProcOfPluginEvent(aEvent);
}

NS_IMETHODIMP_(void)
PuppetWidget::SetInputContext(const InputContext& aContext,
                              const InputContextAction& aAction)
{
  mInputContext = aContext;
  // Any widget instances cannot cache IME open state because IME open state
  // can be changed by user but native IME may not notify us of changing the
  // open state on some platforms.
  mInputContext.mIMEState.mOpen = IMEState::OPEN_STATE_NOT_SUPPORTED;

#ifndef MOZ_CROSS_PROCESS_IME
  return;
#endif

  if (!mTabChild) {
    return;
  }
  mTabChild->SendSetInputContext(
    static_cast<int32_t>(aContext.mIMEState.mEnabled),
    static_cast<int32_t>(aContext.mIMEState.mOpen),
    aContext.mHTMLInputType,
    aContext.mHTMLInputInputmode,
    aContext.mActionHint,
    static_cast<int32_t>(aAction.mCause),
    static_cast<int32_t>(aAction.mFocusChange));
}

NS_IMETHODIMP_(InputContext)
PuppetWidget::GetInputContext()
{
#ifndef MOZ_CROSS_PROCESS_IME
  return InputContext();
#endif

  // XXX Currently, we don't support retrieving IME open state from child
  //     process.

  // When this widget caches input context and currently managed by
  // IMEStateManager, the cache is valid.  Only in this case, we can
  // avoid to use synchronous IPC.
  if (mInputContext.mIMEState.mEnabled != IMEState::UNKNOWN &&
      IMEStateManager::GetWidgetForActiveInputContext() == this) {
    return mInputContext;
  }

  NS_WARNING("PuppetWidget::GetInputContext() needs to retrieve it with IPC");

  // Don't cache InputContext here because this process isn't managing IME
  // state of the chrome widget.  So, we cannot modify mInputContext when
  // chrome widget is set to new context.
  InputContext context;
  if (mTabChild) {
    int32_t enabled, open;
    mTabChild->SendGetInputContext(&enabled, &open);
    context.mIMEState.mEnabled = static_cast<IMEState::Enabled>(enabled);
    context.mIMEState.mOpen = static_cast<IMEState::Open>(open);
  }
  return context;
}

NS_IMETHODIMP_(NativeIMEContext)
PuppetWidget::GetNativeIMEContext()
{
  return mNativeIMEContext;
}

nsresult
PuppetWidget::NotifyIMEOfFocusChange(const IMENotification& aIMENotification)
{
#ifndef MOZ_CROSS_PROCESS_IME
  return NS_OK;
#endif

  if (!mTabChild)
    return NS_ERROR_FAILURE;

  bool gotFocus = aIMENotification.mMessage == NOTIFY_IME_OF_FOCUS;
  if (gotFocus) {
    if (mInputContext.mIMEState.mEnabled != IMEState::PLUGIN) {
      // When IME gets focus, we should initalize all information of the
      // content.
      if (NS_WARN_IF(!mContentCache.CacheAll(this, &aIMENotification))) {
        return NS_ERROR_FAILURE;
      }
    } else {
      // However, if a plugin has focus, only the editor rect information is
      // available.
      if (NS_WARN_IF(!mContentCache.CacheEditorRect(this, &aIMENotification))) {
        return NS_ERROR_FAILURE;
      }
    }
  } else {
    // When IME loses focus, we don't need to store anything.
    mContentCache.Clear();
  }

  mIMEPreferenceOfParent = nsIMEUpdatePreference();
  if (!mTabChild->SendNotifyIMEFocus(mContentCache, aIMENotification,
                                     &mIMEPreferenceOfParent)) {
    return NS_ERROR_FAILURE;
  }
  return NS_OK;
}

nsresult
PuppetWidget::NotifyIMEOfCompositionUpdate(
                const IMENotification& aIMENotification)
{
#ifndef MOZ_CROSS_PROCESS_IME
  return NS_OK;
#endif

  NS_ENSURE_TRUE(mTabChild, NS_ERROR_FAILURE);

  if (mInputContext.mIMEState.mEnabled != IMEState::PLUGIN &&
      NS_WARN_IF(!mContentCache.CacheSelection(this, &aIMENotification))) {
    return NS_ERROR_FAILURE;
  }
  mTabChild->SendNotifyIMECompositionUpdate(mContentCache, aIMENotification);
  return NS_OK;
}

nsIMEUpdatePreference
PuppetWidget::GetIMEUpdatePreference()
{
#ifdef MOZ_CROSS_PROCESS_IME
  // e10s requires IME content cache in in the TabParent for handling query
  // content event only with the parent process.  Therefore, this process
  // needs to receive a lot of information from the focused editor to sent
  // the latest content to the parent process.
  if (mInputContext.mIMEState.mEnabled == IMEState::PLUGIN) {
    // But if a plugin has focus, we cannot receive text nor selection change
    // in the plugin.  Therefore, PuppetWidget needs to receive only position
    // change event for updating the editor rect cache.
    return nsIMEUpdatePreference(mIMEPreferenceOfParent.mWantUpdates |
                                 nsIMEUpdatePreference::NOTIFY_POSITION_CHANGE);
  }
  return nsIMEUpdatePreference(mIMEPreferenceOfParent.mWantUpdates |
                               nsIMEUpdatePreference::NOTIFY_TEXT_CHANGE |
                               nsIMEUpdatePreference::NOTIFY_POSITION_CHANGE );
#else
  // B2G doesn't handle IME as widget-level.
  return nsIMEUpdatePreference();
#endif
}

nsresult
PuppetWidget::NotifyIMEOfTextChange(const IMENotification& aIMENotification)
{
  MOZ_ASSERT(aIMENotification.mMessage == NOTIFY_IME_OF_TEXT_CHANGE,
             "Passed wrong notification");

#ifndef MOZ_CROSS_PROCESS_IME
  return NS_OK;
#endif

  if (!mTabChild)
    return NS_ERROR_FAILURE;

  // While a plugin has focus, text change notification shouldn't be available.
  if (NS_WARN_IF(mInputContext.mIMEState.mEnabled == IMEState::PLUGIN)) {
    return NS_ERROR_FAILURE;
  }

  // FYI: text change notification is the first notification after
  //      a user operation changes the content.  So, we need to modify
  //      the cache as far as possible here.

  if (NS_WARN_IF(!mContentCache.CacheText(this, &aIMENotification))) {
    return NS_ERROR_FAILURE;
  }

  // TabParent doesn't this this to cache.  we don't send the notification
  // if parent process doesn't request NOTIFY_TEXT_CHANGE.
  if (mIMEPreferenceOfParent.WantTextChange()) {
    mTabChild->SendNotifyIMETextChange(mContentCache, aIMENotification);
  } else {
    mTabChild->SendUpdateContentCache(mContentCache);
  }
  return NS_OK;
}

nsresult
PuppetWidget::NotifyIMEOfSelectionChange(
                const IMENotification& aIMENotification)
{
  MOZ_ASSERT(aIMENotification.mMessage == NOTIFY_IME_OF_SELECTION_CHANGE,
             "Passed wrong notification");

#ifndef MOZ_CROSS_PROCESS_IME
  return NS_OK;
#endif

  if (!mTabChild)
    return NS_ERROR_FAILURE;

  // While a plugin has focus, selection change notification shouldn't be
  // available.
  if (NS_WARN_IF(mInputContext.mIMEState.mEnabled == IMEState::PLUGIN)) {
    return NS_ERROR_FAILURE;
  }

  // Note that selection change must be notified after text change if it occurs.
  // Therefore, we don't need to query text content again here.
  mContentCache.SetSelection(
    this, 
    aIMENotification.mSelectionChangeData.mOffset,
    aIMENotification.mSelectionChangeData.Length(),
    aIMENotification.mSelectionChangeData.mReversed,
    aIMENotification.mSelectionChangeData.GetWritingMode());

  mTabChild->SendNotifyIMESelection(mContentCache, aIMENotification);

  return NS_OK;
}

nsresult
PuppetWidget::NotifyIMEOfMouseButtonEvent(
                const IMENotification& aIMENotification)
{
  if (!mTabChild) {
    return NS_ERROR_FAILURE;
  }

  // While a plugin has focus, mouse button event notification shouldn't be
  // available.
  if (NS_WARN_IF(mInputContext.mIMEState.mEnabled == IMEState::PLUGIN)) {
    return NS_ERROR_FAILURE;
  }


  bool consumedByIME = false;
  if (!mTabChild->SendNotifyIMEMouseButtonEvent(aIMENotification,
                                                &consumedByIME)) {
    return NS_ERROR_FAILURE;
  }

  return consumedByIME ? NS_SUCCESS_EVENT_CONSUMED : NS_OK;
}

nsresult
PuppetWidget::NotifyIMEOfPositionChange(const IMENotification& aIMENotification)
{
#ifndef MOZ_CROSS_PROCESS_IME
  return NS_OK;
#endif
  if (NS_WARN_IF(!mTabChild)) {
    return NS_ERROR_FAILURE;
  }

  if (NS_WARN_IF(!mContentCache.CacheEditorRect(this, &aIMENotification))) {
    return NS_ERROR_FAILURE;
  }
  // While a plugin has focus, selection range isn't available.  So, we don't
  // need to cache it at that time.
  if (mInputContext.mIMEState.mEnabled != IMEState::PLUGIN &&
      NS_WARN_IF(!mContentCache.CacheSelection(this, &aIMENotification))) {
    return NS_ERROR_FAILURE;
  }
  if (mIMEPreferenceOfParent.WantPositionChanged()) {
    mTabChild->SendNotifyIMEPositionChange(mContentCache, aIMENotification);
  } else {
    mTabChild->SendUpdateContentCache(mContentCache);
  }
  return NS_OK;
}

NS_IMETHODIMP
PuppetWidget::SetCursor(nsCursor aCursor)
{
  // Don't cache on windows, Windowless flash breaks this via async cursor updates.
#if !defined(XP_WIN)
  if (mCursor == aCursor && !mCustomCursor && !mUpdateCursor) {
    return NS_OK;
  }
#endif

  mCustomCursor = nullptr;

  if (mTabChild &&
      !mTabChild->SendSetCursor(aCursor, mUpdateCursor)) {
    return NS_ERROR_FAILURE;
  }

  mCursor = aCursor;
  mUpdateCursor = false;

  return NS_OK;
}

NS_IMETHODIMP
PuppetWidget::SetCursor(imgIContainer* aCursor,
                        uint32_t aHotspotX, uint32_t aHotspotY)
{
  if (!aCursor || !mTabChild) {
    return NS_OK;
  }

#if !defined(XP_WIN)
  if (mCustomCursor == aCursor &&
      mCursorHotspotX == aHotspotX &&
      mCursorHotspotY == aHotspotY &&
      !mUpdateCursor) {
    return NS_OK;
  }
#endif

  RefPtr<mozilla::gfx::SourceSurface> surface =
    aCursor->GetFrame(imgIContainer::FRAME_CURRENT,
                      imgIContainer::FLAG_SYNC_DECODE);
  if (!surface) {
    return NS_ERROR_FAILURE;
  }

  RefPtr<mozilla::gfx::DataSourceSurface> dataSurface =
    surface->GetDataSurface();
  if (!dataSurface) {
    return NS_ERROR_FAILURE;
  }

  size_t length;
  int32_t stride;
  mozilla::UniquePtr<char[]> surfaceData =
    nsContentUtils::GetSurfaceData(WrapNotNull(dataSurface), &length, &stride);

  nsDependentCString cursorData(surfaceData.get(), length);
  mozilla::gfx::IntSize size = dataSurface->GetSize();
  if (!mTabChild->SendSetCustomCursor(cursorData, size.width, size.height, stride,
                                      static_cast<uint8_t>(dataSurface->GetFormat()),
                                      aHotspotX, aHotspotY, mUpdateCursor)) {
    return NS_ERROR_FAILURE;
  }

  mCursor = nsCursor(-1);
  mCustomCursor = aCursor;
  mCursorHotspotX = aHotspotX;
  mCursorHotspotY = aHotspotY;
  mUpdateCursor = false;

  return NS_OK;
}

void
PuppetWidget::ClearCachedCursor()
{
  nsBaseWidget::ClearCachedCursor();
  mCustomCursor = nullptr;
}

nsresult
PuppetWidget::Paint()
{
  MOZ_ASSERT(!mDirtyRegion.IsEmpty(), "paint event logic messed up");

  if (!GetCurrentWidgetListener())
    return NS_OK;

  LayoutDeviceIntRegion region = mDirtyRegion;

  // reset repaint tracking
  mDirtyRegion.SetEmpty();
  mPaintTask.Revoke();

  RefPtr<PuppetWidget> strongThis(this);

  GetCurrentWidgetListener()->WillPaintWindow(this);

  if (GetCurrentWidgetListener()) {
#ifdef DEBUG
    debug_DumpPaintEvent(stderr, this, region.ToUnknownRegion(),
                         "PuppetWidget", 0);
#endif

    if (mozilla::layers::LayersBackend::LAYERS_CLIENT == mLayerManager->GetBackendType()) {
      // Do nothing, the compositor will handle drawing
      if (mTabChild) {
        mTabChild->NotifyPainted();
      }
    } else {
      RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(mDrawTarget);
      if (!ctx) {
        gfxDevCrash(LogReason::InvalidContext) << "PuppetWidget context problem " << gfx::hexa(mDrawTarget);
        return NS_ERROR_FAILURE;
      }
      ctx->Rectangle(gfxRect(0,0,0,0));
      ctx->Clip();
      AutoLayerManagerSetup setupLayerManager(this, ctx,
                                              BufferMode::BUFFER_NONE);
      GetCurrentWidgetListener()->PaintWindow(this, region);
      if (mTabChild) {
        mTabChild->NotifyPainted();
      }
    }
  }

  if (GetCurrentWidgetListener()) {
    GetCurrentWidgetListener()->DidPaintWindow();
  }

  return NS_OK;
}

void
PuppetWidget::SetChild(PuppetWidget* aChild)
{
  MOZ_ASSERT(this != aChild, "can't parent a widget to itself");
  MOZ_ASSERT(!aChild->mChild,
             "fake widget 'hierarchy' only expected to have one level");

  mChild = aChild;
}

NS_IMETHODIMP
PuppetWidget::PaintTask::Run()
{
  if (mWidget) {
    mWidget->Paint();
  }
  return NS_OK;
}

void
PuppetWidget::PaintNowIfNeeded()
{
  if (IsVisible() && mPaintTask.IsPending()) {
    Paint();
  }
}

NS_IMPL_ISUPPORTS(PuppetWidget::MemoryPressureObserver, nsIObserver)

NS_IMETHODIMP
PuppetWidget::MemoryPressureObserver::Observe(nsISupports* aSubject,
                                              const char* aTopic,
                                              const char16_t* aData)
{
  if (!mWidget) {
    return NS_OK;
  }

  if (strcmp("memory-pressure", aTopic) == 0 &&
      !NS_LITERAL_STRING("lowering-priority").Equals(aData)) {
    if (!mWidget->mVisible && mWidget->mLayerManager &&
        XRE_IsContentProcess()) {
      mWidget->mLayerManager->ClearCachedResources();
    }
  }
  return NS_OK;
}

void
PuppetWidget::MemoryPressureObserver::Remove()
{
  nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
  if (obs) {
    obs->RemoveObserver(this, "memory-pressure");
  }
  mWidget = nullptr;
}

bool
PuppetWidget::NeedsPaint()
{
  // e10s popups are handled by the parent process, so never should be painted here
  if (XRE_IsContentProcess() &&
      Preferences::GetBool("browser.tabs.remote.desktopbehavior", false) &&
      mWindowType == eWindowType_popup) {
    NS_WARNING("Trying to paint an e10s popup in the child process!");
    return false;
  }

  return mVisible;
}

float
PuppetWidget::GetDPI()
{
  if (mDPI < 0) {
    if (mTabChild) {
      mTabChild->GetDPI(&mDPI);
    } else {
      mDPI = 96.0;
    }
  }

  return mDPI;
}

double
PuppetWidget::GetDefaultScaleInternal()
{
  if (mDefaultScale < 0) {
    if (mTabChild) {
      mTabChild->GetDefaultScale(&mDefaultScale);
    } else {
      mDefaultScale = 1;
    }
  }

  return mDefaultScale;
}

int32_t
PuppetWidget::RoundsWidgetCoordinatesTo()
{
  if (mRounding < 0) {
    if (mTabChild) {
      mTabChild->GetWidgetRounding(&mRounding);
    } else {
      mRounding = 1;
    }
  }

  return mRounding;
}

void*
PuppetWidget::GetNativeData(uint32_t aDataType)
{
  switch (aDataType) {
  case NS_NATIVE_SHAREABLE_WINDOW: {
    MOZ_ASSERT(mTabChild, "Need TabChild to get the nativeWindow from!");
    mozilla::WindowsHandle nativeData = 0;
    if (mTabChild) {
      mTabChild->SendGetWidgetNativeData(&nativeData);
    }
    return (void*)nativeData;
  }
  case NS_NATIVE_WINDOW:
  case NS_NATIVE_WIDGET:
  case NS_NATIVE_DISPLAY:
    // These types are ignored (see bug 1183828, bug 1240891).
    break;
  case NS_RAW_NATIVE_IME_CONTEXT:
    MOZ_CRASH("You need to call GetNativeIMEContext() instead");
  case NS_NATIVE_PLUGIN_PORT:
  case NS_NATIVE_GRAPHIC:
  case NS_NATIVE_SHELLWIDGET:
  default:
    NS_WARNING("nsWindow::GetNativeData called with bad value");
    break;
  }
  return nullptr;
}

#if defined(XP_WIN)
void
PuppetWidget::SetNativeData(uint32_t aDataType, uintptr_t aVal)
{
  switch (aDataType) {
  case NS_NATIVE_CHILD_OF_SHAREABLE_WINDOW:
    MOZ_ASSERT(mTabChild, "Need TabChild to send the message.");
    if (mTabChild) {
      mTabChild->SendSetNativeChildOfShareableWindow(aVal);
    }
    break;
  default:
    NS_WARNING("SetNativeData called with unsupported data type.");
  }
}
#endif

nsIntPoint
PuppetWidget::GetChromeDimensions()
{
  if (!GetOwningTabChild()) {
    NS_WARNING("PuppetWidget without Tab does not have chrome information.");
    return nsIntPoint();
  }
  return GetOwningTabChild()->GetChromeDisplacement().ToUnknownPoint();
}

nsIntPoint
PuppetWidget::GetWindowPosition()
{
  if (!GetOwningTabChild()) {
    return nsIntPoint();
  }

  int32_t winX, winY, winW, winH;
  NS_ENSURE_SUCCESS(GetOwningTabChild()->GetDimensions(0, &winX, &winY, &winW, &winH), nsIntPoint());
  return nsIntPoint(winX, winY) + GetOwningTabChild()->GetClientOffset().ToUnknownPoint();
}

LayoutDeviceIntRect
PuppetWidget::GetScreenBounds()
{
  return LayoutDeviceIntRect(WidgetToScreenOffset(), mBounds.Size());
}

uint32_t PuppetWidget::GetMaxTouchPoints() const
{
  static uint32_t sTouchPoints = 0;
  static bool sIsInitialized = false;
  if (sIsInitialized) {
    return sTouchPoints;
  }
  if (mTabChild) {
    mTabChild->GetMaxTouchPoints(&sTouchPoints);
    sIsInitialized = true;
  }
  return sTouchPoints;
}

void
PuppetWidget::StartAsyncScrollbarDrag(const AsyncDragMetrics& aDragMetrics)
{
  mTabChild->StartScrollbarDrag(aDragMetrics);
}

PuppetScreen::PuppetScreen(void *nativeScreen)
{
}

PuppetScreen::~PuppetScreen()
{
}

static ScreenConfiguration
ScreenConfig()
{
  ScreenConfiguration config;
  hal::GetCurrentScreenConfiguration(&config);
  return config;
}

nsIntSize
PuppetWidget::GetScreenDimensions()
{
  nsIntRect r = ScreenConfig().rect();
  return nsIntSize(r.width, r.height);
}

NS_IMETHODIMP
PuppetScreen::GetId(uint32_t *outId)
{
  *outId = 1;
  return NS_OK;
}

NS_IMETHODIMP
PuppetScreen::GetRect(int32_t *outLeft,  int32_t *outTop,
                      int32_t *outWidth, int32_t *outHeight)
{
  nsIntRect r = ScreenConfig().rect();
  *outLeft = r.x;
  *outTop = r.y;
  *outWidth = r.width;
  *outHeight = r.height;
  return NS_OK;
}

NS_IMETHODIMP
PuppetScreen::GetAvailRect(int32_t *outLeft,  int32_t *outTop,
                           int32_t *outWidth, int32_t *outHeight)
{
  return GetRect(outLeft, outTop, outWidth, outHeight);
}

NS_IMETHODIMP
PuppetScreen::GetPixelDepth(int32_t *aPixelDepth)
{
  *aPixelDepth = ScreenConfig().pixelDepth();
  return NS_OK;
}

NS_IMETHODIMP
PuppetScreen::GetColorDepth(int32_t *aColorDepth)
{
  *aColorDepth = ScreenConfig().colorDepth();
  return NS_OK;
}

NS_IMETHODIMP
PuppetScreen::GetRotation(uint32_t* aRotation)
{
  NS_WARNING("Attempt to get screen rotation through nsIScreen::GetRotation().  Nothing should know or care this in sandboxed contexts.  If you want *orientation*, use hal.");
  return NS_ERROR_NOT_AVAILABLE;
}

NS_IMETHODIMP
PuppetScreen::SetRotation(uint32_t aRotation)
{
  NS_WARNING("Attempt to set screen rotation through nsIScreen::GetRotation().  Nothing should know or care this in sandboxed contexts.  If you want *orientation*, use hal.");
  return NS_ERROR_NOT_AVAILABLE;
}

NS_IMPL_ISUPPORTS(PuppetScreenManager, nsIScreenManager)

PuppetScreenManager::PuppetScreenManager()
{
    mOneScreen = new PuppetScreen(nullptr);
}

PuppetScreenManager::~PuppetScreenManager()
{
}

NS_IMETHODIMP
PuppetScreenManager::ScreenForId(uint32_t aId,
                                 nsIScreen** outScreen)
{
  NS_IF_ADDREF(*outScreen = mOneScreen.get());
  return NS_OK;
}

NS_IMETHODIMP
PuppetScreenManager::GetPrimaryScreen(nsIScreen** outScreen)
{
  NS_IF_ADDREF(*outScreen = mOneScreen.get());
  return NS_OK;
}

NS_IMETHODIMP
PuppetScreenManager::ScreenForRect(int32_t inLeft,
                                   int32_t inTop,
                                   int32_t inWidth,
                                   int32_t inHeight,
                                   nsIScreen** outScreen)
{
  return GetPrimaryScreen(outScreen);
}

NS_IMETHODIMP
PuppetScreenManager::ScreenForNativeWidget(void* aWidget,
                                           nsIScreen** outScreen)
{
  return GetPrimaryScreen(outScreen);
}

NS_IMETHODIMP
PuppetScreenManager::GetNumberOfScreens(uint32_t* aNumberOfScreens)
{
  *aNumberOfScreens = 1;
  return NS_OK;
}

NS_IMETHODIMP
PuppetScreenManager::GetSystemDefaultScale(float *aDefaultScale)
{
  *aDefaultScale = 1.0f;
  return NS_OK;
}

nsIWidgetListener*
PuppetWidget::GetCurrentWidgetListener()
{
  if (!mPreviouslyAttachedWidgetListener ||
      !mAttachedWidgetListener) {
    return mAttachedWidgetListener;
  }

  if (mAttachedWidgetListener->GetView()->IsPrimaryFramePaintSuppressed()) {
    return mPreviouslyAttachedWidgetListener;
  }

  return mAttachedWidgetListener;
}

void
PuppetWidget::SetCandidateWindowForPlugin(
                const CandidateWindowPosition& aPosition)
{
  if (!mTabChild) {
    return;
  }

  mTabChild->SendSetCandidateWindowForPlugin(aPosition);
}

void
PuppetWidget::ZoomToRect(const uint32_t& aPresShellId,
                         const FrameMetrics::ViewID& aViewId,
                         const CSSRect& aRect,
                         const uint32_t& aFlags)
{
  if (!mTabChild) {
    return;
  }

  mTabChild->ZoomToRect(aPresShellId, aViewId, aRect, aFlags);
}

void
PuppetWidget::LookUpDictionary(
                const nsAString& aText,
                const nsTArray<mozilla::FontRange>& aFontRangeArray,
                const bool aIsVertical,
                const LayoutDeviceIntPoint& aPoint)
{
  if (!mTabChild) {
    return;
  }

  mTabChild->SendLookUpDictionary(nsString(aText), aFontRangeArray, aIsVertical, aPoint);
}

bool
PuppetWidget::HasPendingInputEvent()
{
  if (!mTabChild) {
    return false;
  }

  bool ret = false;

  mTabChild->GetIPCChannel()->PeekMessages(
    [&ret](const IPC::Message& aMsg) -> bool {
      if ((aMsg.type() & mozilla::dom::PBrowser::PBrowserStart)
          == mozilla::dom::PBrowser::PBrowserStart) {
        switch (aMsg.type()) {
          case mozilla::dom::PBrowser::Msg_RealMouseMoveEvent__ID:
          case mozilla::dom::PBrowser::Msg_SynthMouseMoveEvent__ID:
          case mozilla::dom::PBrowser::Msg_RealMouseButtonEvent__ID:
          case mozilla::dom::PBrowser::Msg_RealKeyEvent__ID:
          case mozilla::dom::PBrowser::Msg_MouseWheelEvent__ID:
          case mozilla::dom::PBrowser::Msg_RealTouchEvent__ID:
          case mozilla::dom::PBrowser::Msg_RealTouchMoveEvent__ID:
          case mozilla::dom::PBrowser::Msg_RealDragEvent__ID:
          case mozilla::dom::PBrowser::Msg_UpdateDimensions__ID:
          case mozilla::dom::PBrowser::Msg_MouseEvent__ID:
          case mozilla::dom::PBrowser::Msg_KeyEvent__ID:
            ret = true;
            return false;  // Stop peeking.
        }
      }
      return true;
    }
  );

  return ret;
}

void
PuppetWidget::HandledWindowedPluginKeyEvent(
                const NativeEventData& aKeyEventData,
                bool aIsConsumed)
{
  if (NS_WARN_IF(mKeyEventInPluginCallbacks.IsEmpty())) {
    return;
  }
  nsCOMPtr<nsIKeyEventInPluginCallback> callback =
    mKeyEventInPluginCallbacks[0];
  MOZ_ASSERT(callback);
  mKeyEventInPluginCallbacks.RemoveElementAt(0);
  callback->HandledWindowedPluginKeyEvent(aKeyEventData, aIsConsumed);
}

nsresult
PuppetWidget::OnWindowedPluginKeyEvent(const NativeEventData& aKeyEventData,
                                       nsIKeyEventInPluginCallback* aCallback)
{
  if (NS_WARN_IF(!mTabChild)) {
    return NS_ERROR_NOT_AVAILABLE;
  }
  if (NS_WARN_IF(!mTabChild->SendOnWindowedPluginKeyEvent(aKeyEventData))) {
    return NS_ERROR_FAILURE;
  }
  mKeyEventInPluginCallbacks.AppendElement(aCallback);
  return NS_SUCCESS_EVENT_HANDLED_ASYNCHRONOUSLY;
}

} // namespace widget
} // namespace mozilla