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PuppetWidget.cpp
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/* -*- 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 "gfxPlatform.h"
#include "nsRefreshDriver.h"
#include "mozilla/dom/BrowserChild.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/IMEStateManager.h"
#include "mozilla/layers/APZChild.h"
#include "mozilla/layers/WebRenderLayerManager.h"
#include "mozilla/Preferences.h"
#include "mozilla/PresShell.h"
#include "mozilla/SchedulerGroup.h"
#include "mozilla/StaticPrefs_browser.h"
#include "mozilla/StaticPrefs_gfx.h"
#include "mozilla/TextComposition.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TextEvents.h"
#include "mozilla/Unused.h"
#include "PuppetWidget.h"
#include "nsContentUtils.h"
#include "nsIWidgetListener.h"
#include "imgIContainer.h"
#include "nsView.h"
#include "nsXPLookAndFeel.h"
#include "nsPrintfCString.h"
using namespace mozilla;
using namespace mozilla::dom;
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(
BrowserChild* aBrowserChild) {
MOZ_ASSERT(!aBrowserChild || nsIWidget::UsePuppetWidgets(),
"PuppetWidgets not allowed in this configuration");
nsCOMPtr<nsIWidget> widget = new PuppetWidget(aBrowserChild);
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_INHERITED(PuppetWidget, nsBaseWidget,
TextEventDispatcherListener)
PuppetWidget::PuppetWidget(BrowserChild* aBrowserChild)
: mBrowserChild(aBrowserChild),
mMemoryPressureObserver(nullptr),
mDPI(-1),
mRounding(1),
mDefaultScale(-1),
mEnabled(false),
mVisible(false),
mNeedIMEStateInit(false),
mIgnoreCompositionEvents(false) {
// Setting 'Unknown' means "not yet cached".
mInputContext.mIMEState.mEnabled = IMEEnabled::Unknown;
}
PuppetWidget::~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);
mWindowRenderer = parent->GetWindowRenderer();
} else {
Resize(mBounds.X(), mBounds.Y(), mBounds.Width(), mBounds.Height(), false);
}
mMemoryPressureObserver = MemoryPressureObserver::Create(this);
}
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(mBrowserChild);
if (mNeedIMEStateInit) {
mContentCache.Clear();
mBrowserChild->SendUpdateContentCache(mContentCache);
mIMENotificationRequestsOfParent = IMENotificationRequests();
mNeedIMEStateInit = false;
}
}
already_AddRefed<nsIWidget> PuppetWidget::CreateChild(
const LayoutDeviceIntRect& aRect, nsWidgetInitData* aInitData,
bool aForceUseIWidgetParent) {
bool isPopup = IsPopup(aInitData);
nsCOMPtr<nsIWidget> widget = nsIWidget::CreatePuppetWidget(mBrowserChild);
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();
if (mMemoryPressureObserver) {
mMemoryPressureObserver->Unregister();
mMemoryPressureObserver = nullptr;
}
mChild = nullptr;
if (mWindowRenderer) {
mWindowRenderer->Destroy();
}
mWindowRenderer = nullptr;
mBrowserChild = nullptr;
}
void 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) {
// The previously attached widget listener is handy if
// we're transitioning from page to page without dropping
// layers (since we'll continue to show the old layers
// associated with that old widget listener). If the
// PuppetWidget was hidden, those layers are dropped,
// so the previously attached widget listener is really
// of no use anymore (and is actually actively harmful - see
// bug 1323586).
mPreviouslyAttachedWidgetListener = nullptr;
Resize(mBounds.Width(), mBounds.Height(), false);
Invalidate(mBounds);
}
}
void PuppetWidget::Resize(double aWidth, double aHeight, bool aRepaint) {
LayoutDeviceIntRect oldBounds = mBounds;
mBounds.SizeTo(
LayoutDeviceIntSize(NSToIntRound(aWidth), NSToIntRound(aHeight)));
if (mChild) {
mChild->Resize(aWidth, aHeight, aRepaint);
return;
}
// 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());
}
}
void PuppetWidget::SetFocus(Raise aRaise, CallerType aCallerType) {
if (aRaise == Raise::Yes && mBrowserChild) {
mBrowserChild->SendRequestFocus(true, aCallerType);
}
}
void PuppetWidget::Invalidate(const LayoutDeviceIntRect& aRect) {
#ifdef DEBUG
debug_DumpInvalidate(stderr, this, &aRect, "PuppetWidget", 0);
#endif
if (mChild) {
mChild->Invalidate(aRect);
return;
}
if (mBrowserChild && !aRect.IsEmpty() && !mWidgetPaintTask.IsPending()) {
mWidgetPaintTask = new WidgetPaintTask(this);
nsCOMPtr<nsIRunnable> event(mWidgetPaintTask.get());
SchedulerGroup::Dispatch(TaskCategory::Other, event.forget());
}
}
mozilla::LayoutDeviceToLayoutDeviceMatrix4x4
PuppetWidget::WidgetToTopLevelWidgetTransform() {
if (!GetOwningBrowserChild()) {
NS_WARNING("PuppetWidget without Tab does not have transform information.");
return mozilla::LayoutDeviceToLayoutDeviceMatrix4x4();
}
return GetOwningBrowserChild()->GetChildToParentConversionMatrix();
}
void PuppetWidget::InitEvent(WidgetGUIEvent& aEvent,
LayoutDeviceIntPoint* aPoint) {
if (nullptr == aPoint) {
aEvent.mRefPoint = LayoutDeviceIntPoint(0, 0);
} else {
// use the point override if provided
aEvent.mRefPoint = *aPoint;
}
aEvent.mTime = PR_Now() / 1000;
}
nsresult PuppetWidget::DispatchEvent(WidgetGUIEvent* aEvent,
nsEventStatus& aStatus) {
#ifdef DEBUG
debug_DumpEvent(stdout, aEvent->mWidget, aEvent, "PuppetWidget", 0);
#endif
MOZ_ASSERT(!mChild || mChild->mWindowType == eWindowType_popup,
"Unexpected event dispatch!");
MOZ_ASSERT(!aEvent->AsKeyboardEvent() ||
aEvent->mFlags.mIsSynthesizedForTests ||
aEvent->AsKeyboardEvent()->AreAllEditCommandsInitialized(),
"Non-sysnthesized keyboard events should have edit commands for "
"all types "
"before dispatched");
if (aEvent->mClass == eCompositionEventClass) {
// If we've already requested to commit/cancel the latest composition,
// TextComposition for the old composition has been destroyed. Then,
// the DOM tree needs to listen to next eCompositionStart and its
// following events. So, until we meet new eCompositionStart, let's
// discard all unnecessary composition events here.
if (mIgnoreCompositionEvents) {
if (aEvent->mMessage != eCompositionStart) {
aStatus = nsEventStatus_eIgnore;
return NS_OK;
}
// Now, we receive new eCompositionStart. Let's restart to handle
// composition in this process.
mIgnoreCompositionEvents = false;
}
// Store the latest native IME context of parent process's widget or
// TextEventDispatcher if it's in this process.
WidgetCompositionEvent* compositionEvent = aEvent->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;
mContentCache.OnCompositionEvent(*compositionEvent);
}
// If the event is a composition event or a keyboard event, it should be
// dispatched with TextEventDispatcher if we could do that with current
// design. However, we cannot do that without big changes and the behavior
// is not so complicated for now. Therefore, we should just notify it
// of dispatching events and TextEventDispatcher should emulate the state
// with events here.
if (aEvent->mClass == eCompositionEventClass ||
aEvent->mClass == eKeyboardEventClass) {
TextEventDispatcher* dispatcher = GetTextEventDispatcher();
// However, if the event is being dispatched by the text event dispatcher
// or, there is native text event dispatcher listener, that means that
// native text input event handler is in this process like on Android,
// and the event is not synthesized for tests, the event is coming from
// the TextEventDispatcher. In these cases, we shouldn't notify
// TextEventDispatcher of dispatching the event.
if (!dispatcher->IsDispatchingEvent() &&
!(mNativeTextEventDispatcherListener &&
!aEvent->mFlags.mIsSynthesizedForTests)) {
DebugOnly<nsresult> rv =
dispatcher->BeginInputTransactionFor(aEvent, this);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"The text event dispatcher should always succeed to start input "
"transaction for the event");
}
}
aStatus = nsEventStatus_eIgnore;
if (GetCurrentWidgetListener()) {
aStatus =
GetCurrentWidgetListener()->HandleEvent(aEvent, mUseAttachedEvents);
}
return NS_OK;
}
nsIWidget::ContentAndAPZEventStatus PuppetWidget::DispatchInputEvent(
WidgetInputEvent* aEvent) {
ContentAndAPZEventStatus status;
if (!AsyncPanZoomEnabled()) {
DispatchEvent(aEvent, status.mContentStatus);
return status;
}
if (!mBrowserChild) {
return status;
}
switch (aEvent->mClass) {
case eWheelEventClass:
Unused << mBrowserChild->SendDispatchWheelEvent(*aEvent->AsWheelEvent());
break;
case eMouseEventClass:
Unused << mBrowserChild->SendDispatchMouseEvent(*aEvent->AsMouseEvent());
break;
case eKeyboardEventClass:
Unused << mBrowserChild->SendDispatchKeyboardEvent(
*aEvent->AsKeyboardEvent());
break;
case eTouchEventClass:
Unused << mBrowserChild->SendDispatchTouchEvent(*aEvent->AsTouchEvent());
break;
default:
MOZ_ASSERT_UNREACHABLE("unsupported event type");
}
return status;
}
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 (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativeKeyEvent(
aNativeKeyboardLayout, aNativeKeyCode, aModifierFlags,
nsString(aCharacters), nsString(aUnmodifiedCharacters),
notifier.SaveObserver());
return NS_OK;
}
nsresult PuppetWidget::SynthesizeNativeMouseEvent(
mozilla::LayoutDeviceIntPoint aPoint, NativeMouseMessage aNativeMessage,
MouseButton aButton, nsIWidget::Modifiers aModifierFlags,
nsIObserver* aObserver) {
AutoObserverNotifier notifier(aObserver, "mouseevent");
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativeMouseEvent(
aPoint, static_cast<uint32_t>(aNativeMessage),
static_cast<int16_t>(aButton), static_cast<uint32_t>(aModifierFlags),
notifier.SaveObserver());
return NS_OK;
}
nsresult PuppetWidget::SynthesizeNativeMouseMove(
mozilla::LayoutDeviceIntPoint aPoint, nsIObserver* aObserver) {
AutoObserverNotifier notifier(aObserver, "mousemove");
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->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 (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->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 (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativeTouchPoint(
aPointerId, aPointerState, aPoint, aPointerPressure, aPointerOrientation,
notifier.SaveObserver());
return NS_OK;
}
nsresult PuppetWidget::SynthesizeNativeTouchPadPinch(
TouchpadGesturePhase aEventPhase, float aScale, LayoutDeviceIntPoint aPoint,
int32_t aModifierFlags) {
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativeTouchPadPinch(aEventPhase, aScale, aPoint,
aModifierFlags);
return NS_OK;
}
nsresult PuppetWidget::SynthesizeNativeTouchTap(LayoutDeviceIntPoint aPoint,
bool aLongTap,
nsIObserver* aObserver) {
AutoObserverNotifier notifier(aObserver, "touchtap");
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativeTouchTap(aPoint, aLongTap,
notifier.SaveObserver());
return NS_OK;
}
nsresult PuppetWidget::ClearNativeTouchSequence(nsIObserver* aObserver) {
AutoObserverNotifier notifier(aObserver, "cleartouch");
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendClearNativeTouchSequence(notifier.SaveObserver());
return NS_OK;
}
nsresult PuppetWidget::SynthesizeNativePenInput(
uint32_t aPointerId, TouchPointerState aPointerState,
LayoutDeviceIntPoint aPoint, double aPressure, uint32_t aRotation,
int32_t aTiltX, int32_t aTiltY, int32_t aButton, nsIObserver* aObserver) {
AutoObserverNotifier notifier(aObserver, "peninput");
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativePenInput(
aPointerId, aPointerState, aPoint, aPressure, aRotation, aTiltX, aTiltY,
aButton, notifier.SaveObserver());
return NS_OK;
}
nsresult PuppetWidget::SynthesizeNativeTouchpadDoubleTap(
LayoutDeviceIntPoint aPoint, uint32_t aModifierFlags) {
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativeTouchpadDoubleTap(aPoint, aModifierFlags);
return NS_OK;
}
nsresult PuppetWidget::SynthesizeNativeTouchpadPan(
TouchpadGesturePhase aEventPhase, LayoutDeviceIntPoint aPoint,
double aDeltaX, double aDeltaY, int32_t aModifierFlags) {
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendSynthesizeNativeTouchpadPan(aEventPhase, aPoint, aDeltaX,
aDeltaY, aModifierFlags);
return NS_OK;
}
void PuppetWidget::LockNativePointer() {
if (!mBrowserChild) {
return;
}
mBrowserChild->SendLockNativePointer();
}
void PuppetWidget::UnlockNativePointer() {
if (!mBrowserChild) {
return;
}
mBrowserChild->SendUnlockNativePointer();
}
void PuppetWidget::SetConfirmedTargetAPZC(
uint64_t aInputBlockId,
const nsTArray<ScrollableLayerGuid>& aTargets) const {
if (mBrowserChild) {
mBrowserChild->SetTargetAPZC(aInputBlockId, aTargets);
}
}
void PuppetWidget::UpdateZoomConstraints(
const uint32_t& aPresShellId, const ScrollableLayerGuid::ViewID& aViewId,
const Maybe<ZoomConstraints>& aConstraints) {
if (mBrowserChild) {
mBrowserChild->DoUpdateZoomConstraints(aPresShellId, aViewId, aConstraints);
}
}
bool PuppetWidget::AsyncPanZoomEnabled() const {
return mBrowserChild && mBrowserChild->AsyncPanZoomEnabled();
}
bool PuppetWidget::GetEditCommands(NativeKeyBindingsType aType,
const WidgetKeyboardEvent& aEvent,
nsTArray<CommandInt>& aCommands) {
MOZ_ASSERT(!aEvent.mFlags.mIsSynthesizedForTests);
// Validate the arguments.
if (NS_WARN_IF(!nsIWidget::GetEditCommands(aType, aEvent, aCommands))) {
return false;
}
if (NS_WARN_IF(!mBrowserChild)) {
return false;
}
mBrowserChild->RequestEditCommands(aType, aEvent, aCommands);
return true;
}
WindowRenderer* PuppetWidget::GetWindowRenderer() {
if (!mWindowRenderer) {
if (XRE_IsParentProcess()) {
// On the parent process there is no CompositorBridgeChild which confuses
// some layers code, so we use basic layers instead. Note that we create
mWindowRenderer = new FallbackRenderer;
return mWindowRenderer;
}
// If we know for sure that the parent side of this BrowserChild is not
// connected to the compositor, we don't want to use a "remote" layer
// manager like WebRender or Client. Instead we use a Basic one which
// can do drawing in this process.
MOZ_ASSERT(!mBrowserChild ||
mBrowserChild->IsLayersConnected() != Some(true));
mWindowRenderer = CreateFallbackRenderer();
}
return mWindowRenderer;
}
bool PuppetWidget::CreateRemoteLayerManager(
const std::function<bool(WebRenderLayerManager*)>& aInitializeFunc) {
RefPtr<WebRenderLayerManager> lm = new WebRenderLayerManager(this);
MOZ_ASSERT(mBrowserChild);
if (!aInitializeFunc(lm)) {
return false;
}
// Force the old LM to self destruct, otherwise if the reference dangles we
// could fail to revoke the most recent transaction. We only want to replace
// it if we successfully create its successor because a partially initialized
// layer manager is worse than a fully initialized but shutdown layer manager.
DestroyLayerManager();
mWindowRenderer = std::move(lm);
return true;
}
nsresult PuppetWidget::RequestIMEToCommitComposition(bool aCancel) {
if (!mBrowserChild) {
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;
}
// We've already requested to commit/cancel composition.
if (NS_WARN_IF(mIgnoreCompositionEvents)) {
#ifdef DEBUG
RefPtr<TextComposition> composition =
IMEStateManager::GetTextCompositionFor(this);
MOZ_ASSERT(!composition);
#endif // #ifdef DEBUG
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;
}
MOZ_DIAGNOSTIC_ASSERT(
composition->IsRequestingCommitOrCancelComposition(),
"Requesting commit or cancel composition should be requested via "
"TextComposition instance");
bool isCommitted = false;
nsAutoString committedString;
if (NS_WARN_IF(!mBrowserChild->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);
#ifdef DEBUG
RefPtr<TextComposition> currentComposition =
IMEStateManager::GetTextCompositionFor(this);
MOZ_ASSERT(!currentComposition);
#endif // #ifdef DEBUG
// Ignore the following composition events until we receive new
// eCompositionStart event.
mIgnoreCompositionEvents = true;
Unused << mBrowserChild->SendOnEventNeedingAckHandled(
eCompositionCommitRequestHandled);
// NOTE: PuppetWidget might be destroyed already.
return NS_OK;
}
// When this widget caches input context and currently managed by
// IMEStateManager, the cache is valid.
bool PuppetWidget::HaveValidInputContextCache() const {
return (mInputContext.mIMEState.mEnabled != IMEEnabled::Unknown &&
IMEStateManager::GetWidgetForActiveInputContext() == this);
}
nsRefreshDriver* PuppetWidget::GetTopLevelRefreshDriver() const {
if (!mBrowserChild) {
return nullptr;
}
if (PresShell* presShell = mBrowserChild->GetTopLevelPresShell()) {
return presShell->GetRefreshDriver();
}
return nullptr;
}
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;
if (!mBrowserChild) {
return;
}
mBrowserChild->SendSetInputContext(aContext, aAction);
}
InputContext PuppetWidget::GetInputContext() {
// XXX Currently, we don't support retrieving IME open state from child
// process.
// If the cache of input context is valid, we can avoid to use synchronous
// IPC.
if (HaveValidInputContextCache()) {
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 (mBrowserChild) {
mBrowserChild->SendGetInputContext(&context.mIMEState);
}
return context;
}
NativeIMEContext PuppetWidget::GetNativeIMEContext() {
return mNativeIMEContext;
}
nsresult PuppetWidget::NotifyIMEOfFocusChange(
const IMENotification& aIMENotification) {
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
bool gotFocus = aIMENotification.mMessage == NOTIFY_IME_OF_FOCUS;
if (gotFocus) {
// When IME gets focus, we should initialize all information of the
// content.
if (NS_WARN_IF(!mContentCache.CacheAll(this, &aIMENotification))) {
return NS_ERROR_FAILURE;
}
} else {
// When IME loses focus, we don't need to store anything.
mContentCache.Clear();
}
mIMENotificationRequestsOfParent =
IMENotificationRequests(IMENotificationRequests::NOTIFY_ALL);
RefPtr<PuppetWidget> self = this;
mBrowserChild->SendNotifyIMEFocus(mContentCache, aIMENotification)
->Then(
GetMainThreadSerialEventTarget(), __func__,
[self](IMENotificationRequests&& aRequests) {
self->mIMENotificationRequestsOfParent = aRequests;
if (TextEventDispatcher* dispatcher =
self->GetTextEventDispatcher()) {
dispatcher->OnWidgetChangeIMENotificationRequests(self);
}
},
[self](mozilla::ipc::ResponseRejectReason&& aReason) {
NS_WARNING("SendNotifyIMEFocus got rejected.");
});
return NS_OK;
}
nsresult PuppetWidget::NotifyIMEOfCompositionUpdate(
const IMENotification& aIMENotification) {
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
if (NS_WARN_IF(!mBrowserChild)) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!mContentCache.CacheSelection(this, &aIMENotification))) {
return NS_ERROR_FAILURE;
}
mBrowserChild->SendNotifyIMECompositionUpdate(mContentCache,
aIMENotification);
return NS_OK;
}
nsresult PuppetWidget::NotifyIMEOfTextChange(
const IMENotification& aIMENotification) {
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
MOZ_ASSERT(aIMENotification.mMessage == NOTIFY_IME_OF_TEXT_CHANGE,
"Passed wrong notification");
if (!mBrowserChild) {
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;
}
// BrowserParent doesn't this this to cache. we don't send the notification
// if parent process doesn't request NOTIFY_TEXT_CHANGE.
if (mIMENotificationRequestsOfParent.WantTextChange()) {
mBrowserChild->SendNotifyIMETextChange(mContentCache, aIMENotification);
} else {
mBrowserChild->SendUpdateContentCache(mContentCache);
}
return NS_OK;
}
nsresult PuppetWidget::NotifyIMEOfSelectionChange(
const IMENotification& aIMENotification) {
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
MOZ_ASSERT(aIMENotification.mMessage == NOTIFY_IME_OF_SELECTION_CHANGE,
"Passed wrong notification");
if (!mBrowserChild) {
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());
mBrowserChild->SendNotifyIMESelection(mContentCache, aIMENotification);
return NS_OK;
}
nsresult PuppetWidget::NotifyIMEOfMouseButtonEvent(
const IMENotification& aIMENotification) {
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
if (!mBrowserChild) {
return NS_ERROR_FAILURE;
}
bool consumedByIME = false;
if (!mBrowserChild->SendNotifyIMEMouseButtonEvent(aIMENotification,
&consumedByIME)) {
return NS_ERROR_FAILURE;
}
return consumedByIME ? NS_SUCCESS_EVENT_CONSUMED : NS_OK;
}
nsresult PuppetWidget::NotifyIMEOfPositionChange(
const IMENotification& aIMENotification) {
MOZ_ASSERT(IMEStateManager::CanSendNotificationToWidget());
if (NS_WARN_IF(!mBrowserChild)) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!mContentCache.CacheEditorRect(this, &aIMENotification))) {
return NS_ERROR_FAILURE;
}
if (NS_WARN_IF(!mContentCache.CacheSelection(this, &aIMENotification))) {
return NS_ERROR_FAILURE;
}
if (mIMENotificationRequestsOfParent.WantPositionChanged()) {
mBrowserChild->SendNotifyIMEPositionChange(mContentCache, aIMENotification);
} else {
mBrowserChild->SendUpdateContentCache(mContentCache);
}
return NS_OK;
}
struct CursorSurface {
UniquePtr<char[]> mData;
IntSize mSize;
};
void PuppetWidget::SetCursor(const Cursor& aCursor) {
if (!mBrowserChild) {
return;
}
const bool force = mUpdateCursor;
if (!force && mCursor == aCursor) {
return;
}
bool hasCustomCursor = false;
UniquePtr<char[]> customCursorData;
size_t length = 0;
IntSize customCursorSize;
int32_t stride = 0;
auto format = SurfaceFormat::B8G8R8A8;
ImageResolution resolution = aCursor.mResolution;
if (aCursor.IsCustom()) {
int32_t width = 0, height = 0;
aCursor.mContainer->GetWidth(&width);
aCursor.mContainer->GetHeight(&height);
const int32_t flags =
imgIContainer::FLAG_SYNC_DECODE | imgIContainer::FLAG_ASYNC_NOTIFY;
RefPtr<SourceSurface> surface;
if (width && height &&
aCursor.mContainer->GetType() == imgIContainer::TYPE_VECTOR) {
// For vector images, scale to device pixels.
resolution.ScaleBy(GetDefaultScale().scale);
resolution.ApplyInverseTo(width, height);
surface = aCursor.mContainer->GetFrameAtSize(
{width, height}, imgIContainer::FRAME_CURRENT, flags);
} else {
// NOTE(emilio): We get the frame at the full size, ignoring resolution,
// because we're going to rasterize it, and we'd effectively lose the
// extra pixels if we rasterized to CustomCursorSize.
surface =
aCursor.mContainer->GetFrame(imgIContainer::FRAME_CURRENT, flags);
}
if (surface) {
if (RefPtr<DataSourceSurface> dataSurface = surface->GetDataSurface()) {
hasCustomCursor = true;
customCursorData = nsContentUtils::GetSurfaceData(
WrapNotNull(dataSurface), &length, &stride);
customCursorSize = dataSurface->GetSize();
format = dataSurface->GetFormat();
}
}
}
nsDependentCString cursorData(customCursorData ? customCursorData.get() : "",
length);
if (!mBrowserChild->SendSetCursor(
aCursor.mDefaultCursor, hasCustomCursor, cursorData,
customCursorSize.width, customCursorSize.height, resolution.mX,
resolution.mY, stride, format, aCursor.mHotspotX, aCursor.mHotspotY,
force)) {
return;
}
mCursor = aCursor;
}
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::WidgetPaintTask::Run() {
if (mWidget) {
mWidget->Paint();
}
return NS_OK;
}
void PuppetWidget::Paint() {
if (!GetCurrentWidgetListener()) return;
mWidgetPaintTask.Revoke();
RefPtr<PuppetWidget> strongThis(this);
GetCurrentWidgetListener()->WillPaintWindow(this);
if (GetCurrentWidgetListener()) {
GetCurrentWidgetListener()->DidPaintWindow();
}
}
void PuppetWidget::PaintNowIfNeeded() {
if (IsVisible() && mWidgetPaintTask.IsPending()) {
Paint();
}
}
void PuppetWidget::OnMemoryPressure(layers::MemoryPressureReason aWhy) {
if (aWhy != MemoryPressureReason::LOW_MEMORY_ONGOING && !mVisible &&
mWindowRenderer && mWindowRenderer->AsWebRender() &&
XRE_IsContentProcess()) {
mWindowRenderer->AsWebRender()->ClearCachedResources();
}
}
bool PuppetWidget::NeedsPaint() {
// e10s popups are handled by the parent process, so never should be painted
// here
if (XRE_IsContentProcess() &&
StaticPrefs::browser_tabs_remote_desktopbehavior() &&