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PuppetWidget.cpp
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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 "ClientLayerManager.h"
#include "gfxPlatform.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/dom/TabGroup.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/Hal.h"
#include "mozilla/IMEStateManager.h"
#include "mozilla/layers/APZChild.h"
#include "mozilla/layers/PLayerTransactionChild.h"
#include "mozilla/layers/WebRenderLayerManager.h"
#include "mozilla/Preferences.h"
#include "mozilla/TextComposition.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TextEvents.h"
#include "mozilla/Unused.h"
#include "BasicLayers.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::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;
static bool gRemoteDesktopBehaviorEnabled = false;
static bool gRemoteDesktopBehaviorInitialized = false;
NS_IMPL_ISUPPORTS_INHERITED(PuppetWidget, nsBaseWidget,
TextEventDispatcherListener)
PuppetWidget::PuppetWidget(TabChild* aTabChild)
: mTabChild(aTabChild),
mMemoryPressureObserver(nullptr),
mDPI(-1),
mRounding(1),
mDefaultScale(-1),
mCursorHotspotX(0),
mCursorHotspotY(0),
mEnabled(false),
mVisible(false),
mNeedIMEStateInit(false),
mIgnoreCompositionEvents(false) {
// Setting 'Unknown' means "not yet cached".
mInputContext.mIMEState.mEnabled = IMEState::UNKNOWN;
if (!gRemoteDesktopBehaviorInitialized) {
Preferences::AddBoolVarCache(&gRemoteDesktopBehaviorEnabled,
"browser.tabs.remote.desktopbehavior", false);
gRemoteDesktopBehaviorInitialized = true;
}
}
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);
mLayerManager = parent->GetLayerManager();
} 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(mTabChild);
if (mNeedIMEStateInit) {
mContentCache.Clear();
mTabChild->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(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->Unregister();
mMemoryPressureObserver = nullptr;
}
mChild = nullptr;
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
mTabChild = 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());
}
}
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;
}
nsresult PuppetWidget::SetFocus(bool aRaise) {
if (aRaise && mTabChild) {
mTabChild->SendRequestFocus(true);
}
return NS_OK;
}
void PuppetWidget::Invalidate(const LayoutDeviceIntRect& aRect) {
#ifdef DEBUG
debug_DumpInvalidate(stderr, this, &aRect, "PuppetWidget", 0);
#endif
if (mChild) {
mChild->Invalidate(aRect);
return;
}
mDirtyRegion.Or(mDirtyRegion, aRect);
if (mTabChild && !mDirtyRegion.IsEmpty() && !mPaintTask.IsPending()) {
mPaintTask = new PaintTask(this);
nsCOMPtr<nsIRunnable> event(mPaintTask.get());
mTabChild->TabGroup()->Dispatch(TaskCategory::Other, event.forget());
return;
}
}
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;
}
// 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;
}
nsEventStatus PuppetWidget::DispatchInputEvent(WidgetInputEvent* aEvent) {
if (!AsyncPanZoomEnabled()) {
nsEventStatus status = nsEventStatus_eIgnore;
DispatchEvent(aEvent, status);
return status;
}
if (!mTabChild) {
return nsEventStatus_eIgnore;
}
if (nsCOMPtr<nsIPresShell> presShell = mTabChild->GetPresShell()) {
// Because the root resolution is conceptually at the parent/child process
// boundary, we need to apply that resolution here because we're sending
// the event from the child to the parent process.
LayoutDevicePoint pt(aEvent->mRefPoint);
pt = pt * presShell->GetResolution();
aEvent->mRefPoint = LayoutDeviceIntPoint::Round(pt);
}
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 ScrollableLayerGuid::ViewID& aViewId,
const Maybe<ZoomConstraints>& aConstraints) {
if (mTabChild) {
mTabChild->DoUpdateZoomConstraints(aPresShellId, aViewId, aConstraints);
}
}
bool PuppetWidget::AsyncPanZoomEnabled() const {
return mTabChild && mTabChild->AsyncPanZoomEnabled();
}
void PuppetWidget::GetEditCommands(NativeKeyBindingsType aType,
const WidgetKeyboardEvent& aEvent,
nsTArray<CommandInt>& aCommands) {
// Validate the arguments.
nsIWidget::GetEditCommands(aType, aEvent, aCommands);
mTabChild->RequestEditCommands(aType, aEvent, aCommands);
}
LayerManager* PuppetWidget::GetLayerManager(
PLayerTransactionChild* aShadowManager, LayersBackend aBackendHint,
LayerManagerPersistence aPersistence) {
if (!mLayerManager) {
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
// a non-retaining layer manager since we don't care about performance.
mLayerManager = new BasicLayerManager(BasicLayerManager::BLM_OFFSCREEN);
return mLayerManager;
}
// If we know for sure that the parent side of this TabChild 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(!mTabChild || mTabChild->IsLayersConnected() != Some(true));
mLayerManager = new BasicLayerManager(this);
}
return mLayerManager;
}
bool PuppetWidget::CreateRemoteLayerManager(
const std::function<bool(LayerManager*)>& aInitializeFunc) {
RefPtr<LayerManager> lm;
MOZ_ASSERT(mTabChild);
if (mTabChild->GetCompositorOptions().UseWebRender()) {
lm = new WebRenderLayerManager(this);
} else {
lm = new ClientLayerManager(this);
}
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();
mLayerManager = lm.forget();
return true;
}
nsresult PuppetWidget::RequestIMEToCommitComposition(bool aCancel) {
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;
}
// 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(!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);
#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 << mTabChild->SendOnEventNeedingAckHandled(
eCompositionCommitRequestHandled);
// NOTE: PuppetWidget might be destroyed already.
return NS_OK;
}
nsresult PuppetWidget::StartPluginIME(const WidgetKeyboardEvent& aKeyboardEvent,
int32_t aPanelX, int32_t aPanelY,
nsString& aCommitted) {
DebugOnly<bool> propagationAlreadyStopped =
aKeyboardEvent.mFlags.mPropagationStopped;
DebugOnly<bool> immediatePropagationAlreadyStopped =
aKeyboardEvent.mFlags.mImmediatePropagationStopped;
if (!mTabChild || !mTabChild->SendStartPluginIME(aKeyboardEvent, aPanelX,
aPanelY, &aCommitted)) {
return NS_ERROR_FAILURE;
}
// TabChild::SendStartPluginIME() sends back the keyboard event to the main
// process synchronously. At this time, ParamTraits<WidgetEvent>::Write()
// marks the event as "posted to remote process". However, this is not
// correct here since the event has been handled synchronously in the main
// process. So, we adjust the cross process dispatching state here.
const_cast<WidgetKeyboardEvent&>(aKeyboardEvent)
.ResetCrossProcessDispatchingState();
// Although it shouldn't occur in content process,
// ResetCrossProcessDispatchingState() may reset propagation state too
// if the event was posted to a remote process and we're waiting its
// result. So, if you saw hitting the following assertions, you'd
// need to restore the propagation state too.
MOZ_ASSERT(propagationAlreadyStopped ==
aKeyboardEvent.mFlags.mPropagationStopped);
MOZ_ASSERT(immediatePropagationAlreadyStopped ==
aKeyboardEvent.mFlags.mImmediatePropagationStopped);
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);
}
// When this widget caches input context and currently managed by
// IMEStateManager, the cache is valid.
bool PuppetWidget::HaveValidInputContextCache() const {
return (mInputContext.mIMEState.mEnabled != IMEState::UNKNOWN &&
IMEStateManager::GetWidgetForActiveInputContext() == this);
}
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 (!mTabChild) {
return;
}
mTabChild->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 (mTabChild) {
mTabChild->SendGetInputContext(&context.mIMEState);
}
return context;
}
NativeIMEContext PuppetWidget::GetNativeIMEContext() {
return mNativeIMEContext;
}
nsresult PuppetWidget::NotifyIMEOfFocusChange(
const IMENotification& aIMENotification) {
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();
}
mIMENotificationRequestsOfParent =
IMENotificationRequests(IMENotificationRequests::NOTIFY_ALL);
RefPtr<PuppetWidget> self = this;
mTabChild->SendNotifyIMEFocus(mContentCache, aIMENotification)
->Then(mTabChild->TabGroup()->EventTargetFor(TaskCategory::UI), __func__,
[self](IMENotificationRequests&& aRequests) {
self->mIMENotificationRequestsOfParent = aRequests;
},
[self](mozilla::ipc::ResponseRejectReason&& aReason) {
NS_WARNING("SendNotifyIMEFocus got rejected.");
});
return NS_OK;
}
nsresult PuppetWidget::NotifyIMEOfCompositionUpdate(
const IMENotification& aIMENotification) {
if (NS_WARN_IF(!mTabChild)) {
return 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;
}
nsresult PuppetWidget::NotifyIMEOfTextChange(
const IMENotification& aIMENotification) {
MOZ_ASSERT(aIMENotification.mMessage == NOTIFY_IME_OF_TEXT_CHANGE,
"Passed wrong notification");
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 (mIMENotificationRequestsOfParent.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");
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) {
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 (mIMENotificationRequestsOfParent.WantPositionChanged()) {
mTabChild->SendNotifyIMEPositionChange(mContentCache, aIMENotification);
} else {
mTabChild->SendUpdateContentCache(mContentCache);
}
return NS_OK;
}
struct CursorSurface {
UniquePtr<char[]> mData;
IntSize mSize;
};
void PuppetWidget::SetCursor(nsCursor aCursor, imgIContainer* aCursorImage,
uint32_t aHotspotX, uint32_t aHotspotY) {
if (!mTabChild) {
return;
}
// Don't cache on windows, Windowless flash breaks this via async cursor
// updates.
#if !defined(XP_WIN)
if (!mUpdateCursor && mCursor == aCursor && mCustomCursor == aCursorImage &&
(!aCursorImage ||
(mCursorHotspotX == aHotspotX && mCursorHotspotY == aHotspotY))) {
return;
}
#endif
bool hasCustomCursor = false;
UniquePtr<char[]> customCursorData;
size_t length = 0;
IntSize customCursorSize;
int32_t stride = 0;
auto format = SurfaceFormat::B8G8R8A8;
bool force = mUpdateCursor;
if (aCursorImage) {
RefPtr<SourceSurface> surface = aCursorImage->GetFrame(
imgIContainer::FRAME_CURRENT, imgIContainer::FLAG_SYNC_DECODE);
if (surface) {
if (RefPtr<DataSourceSurface> dataSurface = surface->GetDataSurface()) {
hasCustomCursor = true;
customCursorData = nsContentUtils::GetSurfaceData(
WrapNotNull(dataSurface), &length, &stride);
customCursorSize = dataSurface->GetSize();
format = dataSurface->GetFormat();
}
}
}
mCustomCursor = nullptr;
nsDependentCString cursorData(customCursorData ? customCursorData.get() : "",
length);
if (!mTabChild->SendSetCursor(aCursor, hasCustomCursor, cursorData,
customCursorSize.width, customCursorSize.height,
stride, format, aHotspotX, aHotspotY, force)) {
return;
}
mCursor = aCursor;
mCustomCursor = aCursorImage;
mCursorHotspotX = aHotspotX;
mCursorHotspotY = aHotspotY;
mUpdateCursor = false;
}
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 (mLayerManager->GetBackendType() ==
mozilla::layers::LayersBackend::LAYERS_CLIENT ||
mLayerManager->GetBackendType() ==
mozilla::layers::LayersBackend::LAYERS_WR ||
(mozilla::layers::LayersBackend::LAYERS_BASIC ==
mLayerManager->GetBackendType() &&
mTabChild && mTabChild->IsLayersConnected().isSome())) {
// Do nothing, the compositor will handle drawing
if (mTabChild) {
mTabChild->NotifyPainted();
}
} else if (mozilla::layers::LayersBackend::LAYERS_BASIC ==
mLayerManager->GetBackendType()) {