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gecko/widget/PuppetWidget.cpp
Bob Owen 36f187da0f Bug 1182411 Part 2: Change winless popup surrogate to have its parent set in the chrome process. r=jimm 
The creation of the surrogate native window in the child NPAPI process was
failing when then sandbox was at low integrity, because the parent is from the
chrome process, so at medium integrity.
Instead of making an IPC call to get the parent, we now create the window upfront
and send it in an IPC message to be parented in the chrome process.
This is done with asynchronous messaging.
2015-08-12 16:00:26 +01:00

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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/CompositorChild.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 "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 nsIntRegion& aRegion)
{
nsIntRegionRectIterator it(aRegion);
while(const nsIntRect* r = it.Next()) {
aWidget->Invalidate(*r);
}
}
/*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)
, mNativeKeyCommandsValid(false)
, mCursorHotspotX(0)
, mCursorHotspotY(0)
{
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 nsIntRect &aRect,
nsWidgetInitData *aInitData)
{
MOZ_ASSERT(!aNativeParent, "got a non-Puppet native parent");
BaseCreate(nullptr, aRect, 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 nsIntRect &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()
{
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)
{
nsIntRect oldBounds = mBounds;
mBounds.SizeTo(nsIntSize(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) {
nsIntRegion 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);
nsIntRect 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)
{
// XXX/cjones: someone who knows about event handling needs to
// decide how this should work.
return NS_OK;
}
NS_IMETHODIMP
PuppetWidget::Invalidate(const nsIntRect& aRect)
{
#ifdef DEBUG
debug_DumpInvalidate(stderr, this, &aRect,
nsAutoCString("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, nsIntPoint* aPoint)
{
if (nullptr == aPoint) {
event.refPoint.x = 0;
event.refPoint.y = 0;
}
else {
// use the point override if provided
event.refPoint.x = aPoint->x;
event.refPoint.y = aPoint->y;
}
event.time = PR_Now() / 1000;
}
NS_IMETHODIMP
PuppetWidget::DispatchEvent(WidgetGUIEvent* event, nsEventStatus& aStatus)
{
#ifdef DEBUG
debug_DumpEvent(stdout, event->widget, event,
nsAutoCString("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);
}
}
aStatus = nsEventStatus_eIgnore;
if (GetCurrentWidgetListener()) {
aStatus = GetCurrentWidgetListener()->HandleEvent(event, mUseAttachedEvents);
}
return NS_OK;
}
nsEventStatus
PuppetWidget::DispatchInputEvent(WidgetInputEvent* aEvent)
{
if (!mTabChild) {
return nsEventStatus_eIgnore;
}
switch (aEvent->mClass) {
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;
}
nsEventStatus
PuppetWidget::DispatchAPZAwareEvent(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;
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,
nsIntPoint 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(nsIntPoint 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->SendSetTargetAPZC(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::IMEEndComposition(bool aCancel)
{
#ifndef MOZ_CROSS_PROCESS_IME
return NS_OK;
#endif
nsEventStatus status;
bool noCompositionEvent = true;
WidgetCompositionEvent compositionCommitEvent(true, NS_COMPOSITION_COMMIT,
this);
InitEvent(compositionCommitEvent, nullptr);
// SendEndIMEComposition is always called since ResetInputState
// should always be called even if we aren't composing something.
if (!mTabChild ||
!mTabChild->SendEndIMEComposition(aCancel, &noCompositionEvent,
&compositionCommitEvent.mData)) {
return NS_ERROR_FAILURE;
}
if (noCompositionEvent) {
return NS_OK;
}
DispatchEvent(&compositionCommitEvent, status);
return NS_OK;
}
nsresult
PuppetWidget::NotifyIMEInternal(const IMENotification& aIMENotification)
{
switch (aIMENotification.mMessage) {
case REQUEST_TO_COMMIT_COMPOSITION:
return IMEEndComposition(false);
case REQUEST_TO_CANCEL_COMPOSITION:
return IMEEndComposition(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;
}
NS_IMETHODIMP_(void)
PuppetWidget::SetInputContext(const InputContext& aContext,
const InputContextAction& aAction)
{
#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;
intptr_t nativeIMEContext;
mTabChild->SendGetInputContext(&enabled, &open, &nativeIMEContext);
context.mIMEState.mEnabled = static_cast<IMEState::Enabled>(enabled);
context.mIMEState.mOpen = static_cast<IMEState::Open>(open);
context.mNativeIMEContext = reinterpret_cast<void*>(nativeIMEContext);
}
return context;
}
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) {
// 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 {
// 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 (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 information cache into TabParent
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;
// 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.mCausedByComposition)) {
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;
// 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;
}
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)) ||
NS_WARN_IF(!mContentCache.CacheSelection(this, &aIMENotification))) {
return NS_ERROR_FAILURE;
}
if (!mTabChild->SendNotifyIMEPositionChange(mContentCache,
aIMENotification)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
PuppetWidget::SetCursor(nsCursor aCursor)
{
if (mCursor == aCursor && !mCustomCursor && !mUpdateCursor) {
return NS_OK;
}
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 (mCustomCursor == aCursor &&
mCursorHotspotX == aHotspotX &&
mCursorHotspotY == aHotspotY &&
!mUpdateCursor) {
return NS_OK;
}
RefPtr<mozilla::gfx::SourceSurface> surface =
aCursor->GetFrame(imgIContainer::FRAME_CURRENT,
imgIContainer::FLAG_SYNC_DECODE);
if (!surface) {
return NS_ERROR_FAILURE;
}
mozilla::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;
nsIntRegion region = mDirtyRegion;
// reset repaint tracking
mDirtyRegion.SetEmpty();
mPaintTask.Revoke();
GetCurrentWidgetListener()->WillPaintWindow(this);
if (GetCurrentWidgetListener()) {
#ifdef DEBUG
debug_DumpPaintEvent(stderr, this, region,
nsAutoCString("PuppetWidget"), 0);
#endif
if (mozilla::layers::LayersBackend::LAYERS_CLIENT == mLayerManager->GetBackendType()) {
// Do nothing, the compositor will handle drawing
if (mTabChild) {
mTabChild->NotifyPainted();
}
} else {
nsRefPtr<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_WIDGET:
case NS_NATIVE_DISPLAY:
// These types are ignored (see bug 1183828).
break;
case NS_NATIVE_WINDOW:
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 LayoutDeviceIntPoint::ToUntyped(GetOwningTabChild()->GetChromeDisplacement());
}
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);
}
NS_METHOD
PuppetWidget::GetScreenBounds(nsIntRect &aRect) {
aRect.MoveTo(LayoutDeviceIntPoint::ToUntyped(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;
}
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;
}
} // namespace widget
} // namespace mozilla
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