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gecko-dev
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gecko-dev/widget/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/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"
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)
, mDefaultScale(-1)
, mCursorHotspotX(0)
, mCursorHotspotY(0)
, mNativeKeyCommandsValid(false)
{
MOZ_COUNT_CTOR(PuppetWidget);
mSingleLineCommands.SetCapacity(4);
mMultiLineCommands.SetCapacity(4);
mRichTextCommands.SetCapacity(4);
}
PuppetWidget::~PuppetWidget()
{
MOZ_COUNT_DTOR(PuppetWidget);
Destroy();
}
NS_IMETHODIMP
PuppetWidget::Create(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);
}
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);
}
NS_IMETHODIMP
PuppetWidget::Destroy()
{
if (mOnDestroyCalled) {
return NS_OK;
}
mOnDestroyCalled = true;
Base::OnDestroy();
Base::Destroy();
mPaintTask.Revoke();
if (mMemoryPressureObserver) {
mMemoryPressureObserver->Remove();
}
mMemoryPressureObserver = nullptr;
mChild = nullptr;
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
mTabChild = nullptr;
return NS_OK;
}
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(bounds);
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.refPoint.x = 0;
event.refPoint.y = 0;
} else {
// use the point override if provided
event.refPoint = *aPoint;
}
event.mTime = PR_Now() / 1000;
}
NS_IMETHODIMP
PuppetWidget::DispatchEvent(WidgetGUIEvent* event, nsEventStatus& aStatus)
{
#ifdef DEBUG
debug_DumpEvent(stdout, event->widget, 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,
ScreenIntPoint aPointerScreenPoint,
double aPointerPressure,
uint32_t aPointerOrientation,
nsIObserver* aObserver)
{
AutoObserverNotifier notifier(aObserver, "touchpoint");
if (!mTabChild) {
return NS_ERROR_FAILURE;
}
mTabChild->SendSynthesizeNativeTouchPoint(aPointerId, aPointerState,
aPointerScreenPoint, aPointerPressure, aPointerOrientation,
notifier.SaveObserver());
return NS_OK;
}
nsresult
PuppetWidget::SynthesizeNativeTouchTap(ScreenIntPoint aPointerScreenPoint,
bool aLongTap,
nsIObserver* aObserver)
{
AutoObserverNotifier notifier(aObserver, "touchtap");
if (!mTabChild) {
return NS_ERROR_FAILURE;
}
mTabChild->SendSynthesizeNativeTouchTap(aPointerScreenPoint, 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,
bool* aAllowRetaining)
{
if (!mLayerManager) {
mLayerManager = new ClientLayerManager(this);
}
ShadowLayerForwarder* lf = mLayerManager->AsShadowForwarder();
if (!lf->HasShadowManager() && aShadowManager) {
lf->SetShadowManager(aShadowManager);
}
if (aAllowRetaining) {
*aAllowRetaining = true;
}
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_UPDATE:
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;
}
NS_IMETHODIMP
PuppetWidget::SetPluginFocused(bool& aFocused)
{
if (!mTabChild || !mTabChild->SendSetPluginFocused(aFocused)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
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;
#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
InputContext context;
if (mTabChild) {
int32_t enabled, open;
// TODO: This is too expensive. PuppetWidget should cache IMEState.
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_SELECTION_CHANGE |
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() &&
(mIMEPreferenceOfParent.WantChangesCausedByComposition() ||
!aIMENotification.mTextChangeData.mCausedOnlyByComposition)) {
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());
if (mIMEPreferenceOfParent.WantSelectionChange() &&
(mIMEPreferenceOfParent.WantChangesCausedByComposition() ||
!aIMENotification.mSelectionChangeData.mCausedByComposition)) {
mTabChild->SendNotifyIMESelection(mContentCache, aIMENotification);
} else {
mTabChild->SendUpdateContentCache(mContentCache);
}
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();
size_t length;
int32_t stride;
mozilla::UniquePtr<char[]> surfaceData =
nsContentUtils::GetSurfaceData(dataSurface, &length, &stride);
nsCString cursorData = nsCString(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();
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 = new gfxContext(mDrawTarget);
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;
}
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;
}
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();
}
NS_METHOD
PuppetWidget::GetScreenBounds(LayoutDeviceIntRect& aRect) {
aRect.MoveTo(WidgetToScreenOffset());
aRect.SizeTo(mBounds.Size());
return NS_OK;
}
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);
}
bool
PuppetWidget::HasPendingInputEvent()
{
if (!mTabChild) {
return false;
}
static const IPC::Message::msgid_t kInputEvents[] = {
mozilla::dom::PBrowser::Msg_RealMouseMoveEvent__ID,
mozilla::dom::PBrowser::Msg_SynthMouseMoveEvent__ID,
mozilla::dom::PBrowser::Msg_RealMouseButtonEvent__ID,
mozilla::dom::PBrowser::Msg_RealKeyEvent__ID,
mozilla::dom::PBrowser::Msg_MouseWheelEvent__ID,
mozilla::dom::PBrowser::Msg_RealTouchEvent__ID,
mozilla::dom::PBrowser::Msg_RealTouchMoveEvent__ID,
mozilla::dom::PBrowser::Msg_RealDragEvent__ID,
mozilla::dom::PBrowser::Msg_UpdateDimensions__ID,
mozilla::dom::PBrowser::Msg_MouseEvent__ID,
mozilla::dom::PBrowser::Msg_KeyEvent__ID
};
bool ret = false;
for (IPC::Message::msgid_t e: kInputEvents) {
mTabChild->GetIPCChannel()->PeekMessages(
e,
[&ret](const IPC::Message& aMsg) -> bool {
ret = true;
return false; // Stop peeking.
}
);
if (ret) {
break;
}
}
return ret;
}
} // namespace widget
} // namespace mozilla
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