forked from mirrors/gecko-dev
aa43fa218e
This changes comes with several different refactorings all rolled into one, unfotunately I couldn't find a way to pull them apart: - First of all annotations now can either recorded (that is, we copy the value and have the crash reporting code own the copy) or registered. Several annotations are changed to use this functionality so that we don't need to update them as their value change. - The code in the exception handler is modified to read the annotations from the mozannotation_client crate. This has the unfortunate side-effect that we need three different bits of code to serialize them: one for annotations read from a child process, one for reading annotations from the main process outside of the exception handler and one for reading annotations from the main process within the exception handler. As we move to fully out-of-process crash reporting the last two methods will go away. - The mozannotation_client crate now doesn't record annotation types anymore. I realized as I was working on this that storing types at runtime has two issues: the first one is that buggy code might change the type of an annotation (that is record it under two different types at two different moments), the second issue is that types might become corrupt during a crash, so better enforce them at annotation-writing time. The end result is that the mozannotation_* crates now only store byte buffers, track the format the data is stored in (null-terminated string, fixed size buffer, etc...) but not the type of data each annotation is supposed to contain. - Which brings us to the next change: concrete types for annotations are now enforced when they're written out. If an annotation doesn't match the expected type it's skipped. Storing an annotation with the wrong type will also trigger an assertion in debug builds. Differential Revision: https://phabricator.services.mozilla.com/D195248
338 lines
12 KiB
C++
338 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "mozilla/dom/Navigator.h"
|
|
#include "mozilla/dom/TouchEvent.h"
|
|
#include "mozilla/dom/Touch.h"
|
|
#include "mozilla/dom/TouchListBinding.h"
|
|
#include "mozilla/BasePrincipal.h"
|
|
#include "mozilla/LookAndFeel.h"
|
|
#include "mozilla/Preferences.h"
|
|
#include "mozilla/StaticPrefs_dom.h"
|
|
#include "mozilla/TouchEvents.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsIDocShell.h"
|
|
#include "nsExceptionHandler.h"
|
|
|
|
namespace mozilla::dom {
|
|
|
|
/******************************************************************************
|
|
* TouchList
|
|
*****************************************************************************/
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TouchList)
|
|
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(TouchList, mParent, mPoints)
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(TouchList)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(TouchList)
|
|
|
|
JSObject* TouchList::WrapObject(JSContext* aCx,
|
|
JS::Handle<JSObject*> aGivenProto) {
|
|
return TouchList_Binding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
// static
|
|
bool TouchList::PrefEnabled(JSContext* aCx, JSObject* aGlobal) {
|
|
return TouchEvent::PrefEnabled(aCx, aGlobal);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* TouchEvent
|
|
*****************************************************************************/
|
|
|
|
TouchEvent::TouchEvent(EventTarget* aOwner, nsPresContext* aPresContext,
|
|
WidgetTouchEvent* aEvent)
|
|
: UIEvent(
|
|
aOwner, aPresContext,
|
|
aEvent ? aEvent : new WidgetTouchEvent(false, eVoidEvent, nullptr)) {
|
|
if (aEvent) {
|
|
mEventIsInternal = false;
|
|
|
|
for (uint32_t i = 0; i < aEvent->mTouches.Length(); ++i) {
|
|
Touch* touch = aEvent->mTouches[i];
|
|
touch->InitializePoints(mPresContext, aEvent);
|
|
}
|
|
} else {
|
|
mEventIsInternal = true;
|
|
}
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_INHERITED(TouchEvent, UIEvent,
|
|
mEvent->AsTouchEvent()->mTouches, mTouches,
|
|
mTargetTouches, mChangedTouches)
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TouchEvent)
|
|
NS_INTERFACE_MAP_END_INHERITING(UIEvent)
|
|
|
|
NS_IMPL_ADDREF_INHERITED(TouchEvent, UIEvent)
|
|
NS_IMPL_RELEASE_INHERITED(TouchEvent, UIEvent)
|
|
|
|
void TouchEvent::InitTouchEvent(const nsAString& aType, bool aCanBubble,
|
|
bool aCancelable, nsGlobalWindowInner* aView,
|
|
int32_t aDetail, bool aCtrlKey, bool aAltKey,
|
|
bool aShiftKey, bool aMetaKey,
|
|
TouchList* aTouches, TouchList* aTargetTouches,
|
|
TouchList* aChangedTouches) {
|
|
NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
|
|
|
|
UIEvent::InitUIEvent(aType, aCanBubble, aCancelable, aView, aDetail);
|
|
mEvent->AsInputEvent()->InitBasicModifiers(aCtrlKey, aAltKey, aShiftKey,
|
|
aMetaKey);
|
|
|
|
mEvent->AsTouchEvent()->mTouches.Clear();
|
|
|
|
// To support touch.target retargeting also when the event is
|
|
// created by JS, we need to copy Touch objects to the widget event.
|
|
// In order to not affect targetTouches, we don't check duplicates in that
|
|
// list.
|
|
mTargetTouches = aTargetTouches;
|
|
AssignTouchesToWidgetEvent(mTargetTouches, false);
|
|
mTouches = aTouches;
|
|
AssignTouchesToWidgetEvent(mTouches, true);
|
|
mChangedTouches = aChangedTouches;
|
|
AssignTouchesToWidgetEvent(mChangedTouches, true);
|
|
}
|
|
|
|
void TouchEvent::AssignTouchesToWidgetEvent(TouchList* aList,
|
|
bool aCheckDuplicates) {
|
|
if (!aList) {
|
|
return;
|
|
}
|
|
WidgetTouchEvent* widgetTouchEvent = mEvent->AsTouchEvent();
|
|
for (uint32_t i = 0; i < aList->Length(); ++i) {
|
|
Touch* touch = aList->Item(i);
|
|
if (touch &&
|
|
(!aCheckDuplicates || !widgetTouchEvent->mTouches.Contains(touch))) {
|
|
widgetTouchEvent->mTouches.AppendElement(touch);
|
|
}
|
|
}
|
|
}
|
|
|
|
TouchList* TouchEvent::Touches() {
|
|
if (!mTouches) {
|
|
WidgetTouchEvent* touchEvent = mEvent->AsTouchEvent();
|
|
if (mEvent->mMessage == eTouchEnd || mEvent->mMessage == eTouchCancel) {
|
|
// for touchend events, remove any changed touches from mTouches
|
|
WidgetTouchEvent::AutoTouchArray unchangedTouches;
|
|
const WidgetTouchEvent::TouchArray& touches = touchEvent->mTouches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
if (!touches[i]->mChanged) {
|
|
unchangedTouches.AppendElement(touches[i]);
|
|
}
|
|
}
|
|
mTouches = new TouchList(ToSupports(this), unchangedTouches);
|
|
} else {
|
|
mTouches = new TouchList(ToSupports(this), touchEvent->mTouches);
|
|
}
|
|
}
|
|
return mTouches;
|
|
}
|
|
|
|
TouchList* TouchEvent::TargetTouches() {
|
|
if (!mTargetTouches || !mTargetTouches->Length()) {
|
|
WidgetTouchEvent* touchEvent = mEvent->AsTouchEvent();
|
|
if (!mTargetTouches) {
|
|
mTargetTouches = new TouchList(ToSupports(this));
|
|
}
|
|
const WidgetTouchEvent::TouchArray& touches = touchEvent->mTouches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
// for touchend/cancel events, don't append to the target list if this is
|
|
// a touch that is ending
|
|
if ((mEvent->mMessage != eTouchEnd && mEvent->mMessage != eTouchCancel) ||
|
|
!touches[i]->mChanged) {
|
|
bool equalTarget = touches[i]->mTarget == mEvent->mTarget;
|
|
if (!equalTarget) {
|
|
// Need to still check if we're inside native anonymous content
|
|
// and the non-NAC target would be the same.
|
|
nsIContent* touchTarget =
|
|
nsIContent::FromEventTargetOrNull(touches[i]->mTarget);
|
|
nsIContent* eventTarget =
|
|
nsIContent::FromEventTargetOrNull(mEvent->mTarget);
|
|
equalTarget = touchTarget && eventTarget &&
|
|
touchTarget->FindFirstNonChromeOnlyAccessContent() ==
|
|
eventTarget->FindFirstNonChromeOnlyAccessContent();
|
|
}
|
|
if (equalTarget) {
|
|
mTargetTouches->Append(touches[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return mTargetTouches;
|
|
}
|
|
|
|
TouchList* TouchEvent::ChangedTouches() {
|
|
if (!mChangedTouches) {
|
|
WidgetTouchEvent::AutoTouchArray changedTouches;
|
|
WidgetTouchEvent* touchEvent = mEvent->AsTouchEvent();
|
|
const WidgetTouchEvent::TouchArray& touches = touchEvent->mTouches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
if (touches[i]->mChanged) {
|
|
changedTouches.AppendElement(touches[i]);
|
|
}
|
|
}
|
|
mChangedTouches = new TouchList(ToSupports(this), changedTouches);
|
|
}
|
|
return mChangedTouches;
|
|
}
|
|
|
|
// static
|
|
bool TouchEvent::PrefEnabled(JSContext* aCx, JSObject* aGlobal) {
|
|
nsIDocShell* docShell = nullptr;
|
|
if (aGlobal) {
|
|
nsGlobalWindowInner* win = xpc::WindowOrNull(aGlobal);
|
|
if (win) {
|
|
docShell = win->GetDocShell();
|
|
}
|
|
}
|
|
return PrefEnabled(docShell);
|
|
}
|
|
|
|
static bool PlatformSupportsTouch() {
|
|
// Touch events are only actually supported if APZ is enabled. If APZ is
|
|
// disabled globally, we can check that once and incorporate that into the
|
|
// cached state. If APZ is enabled, we need to further check based on the
|
|
// widget, which we do in PrefEnabled (and don't cache that result).
|
|
static bool sIsTouchDeviceSupportPresent =
|
|
!!LookAndFeel::GetInt(LookAndFeel::IntID::TouchDeviceSupportPresent) &&
|
|
gfxPlatform::AsyncPanZoomEnabled();
|
|
|
|
return sIsTouchDeviceSupportPresent;
|
|
}
|
|
|
|
// static
|
|
bool TouchEvent::PrefEnabled(nsIDocShell* aDocShell) {
|
|
MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread());
|
|
|
|
auto touchEventsOverride = mozilla::dom::TouchEventsOverride::None;
|
|
if (aDocShell) {
|
|
if (BrowsingContext* bc = aDocShell->GetBrowsingContext()) {
|
|
touchEventsOverride = bc->TouchEventsOverride();
|
|
}
|
|
}
|
|
|
|
bool enabled = false;
|
|
if (touchEventsOverride == mozilla::dom::TouchEventsOverride::Enabled) {
|
|
enabled = true;
|
|
} else if (touchEventsOverride ==
|
|
mozilla::dom::TouchEventsOverride::Disabled) {
|
|
enabled = false;
|
|
} else {
|
|
const int32_t prefValue = StaticPrefs::dom_w3c_touch_events_enabled();
|
|
if (prefValue == 2) {
|
|
enabled = PlatformSupportsTouch();
|
|
|
|
static bool firstTime = true;
|
|
// The touch screen data seems to be inaccurate in the parent process,
|
|
// and we really need the crash annotation in child processes.
|
|
if (firstTime && !XRE_IsParentProcess()) {
|
|
CrashReporter::RecordAnnotationBool(
|
|
CrashReporter::Annotation::HasDeviceTouchScreen, enabled);
|
|
firstTime = false;
|
|
}
|
|
|
|
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
|
|
if (enabled && aDocShell) {
|
|
// APZ might be disabled on this particular widget, in which case
|
|
// TouchEvent support will also be disabled. Try to detect that.
|
|
RefPtr<nsPresContext> pc = aDocShell->GetPresContext();
|
|
if (pc) {
|
|
nsCOMPtr<nsIWidget> widget = pc->GetRootWidget();
|
|
if (widget) {
|
|
enabled &= widget->AsyncPanZoomEnabled();
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
} else {
|
|
enabled = !!prefValue;
|
|
}
|
|
}
|
|
|
|
if (enabled) {
|
|
nsContentUtils::InitializeTouchEventTable();
|
|
}
|
|
return enabled;
|
|
}
|
|
|
|
// static
|
|
bool TouchEvent::LegacyAPIEnabled(JSContext* aCx, JSObject* aGlobal) {
|
|
nsIPrincipal* principal = nsContentUtils::SubjectPrincipal(aCx);
|
|
bool isSystem = principal && principal->IsSystemPrincipal();
|
|
|
|
nsIDocShell* docShell = nullptr;
|
|
if (aGlobal) {
|
|
nsGlobalWindowInner* win = xpc::WindowOrNull(aGlobal);
|
|
if (win) {
|
|
docShell = win->GetDocShell();
|
|
}
|
|
}
|
|
return LegacyAPIEnabled(docShell, isSystem);
|
|
}
|
|
|
|
// static
|
|
bool TouchEvent::LegacyAPIEnabled(nsIDocShell* aDocShell,
|
|
bool aCallerIsSystem) {
|
|
return (aCallerIsSystem ||
|
|
StaticPrefs::dom_w3c_touch_events_legacy_apis_enabled() ||
|
|
(aDocShell && aDocShell->GetBrowsingContext() &&
|
|
aDocShell->GetBrowsingContext()->TouchEventsOverride() ==
|
|
mozilla::dom::TouchEventsOverride::Enabled)) &&
|
|
PrefEnabled(aDocShell);
|
|
}
|
|
|
|
// static
|
|
already_AddRefed<TouchEvent> TouchEvent::Constructor(
|
|
const GlobalObject& aGlobal, const nsAString& aType,
|
|
const TouchEventInit& aParam) {
|
|
nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
|
|
RefPtr<TouchEvent> e = new TouchEvent(t, nullptr, nullptr);
|
|
bool trusted = e->Init(t);
|
|
RefPtr<TouchList> touches = e->CopyTouches(aParam.mTouches);
|
|
RefPtr<TouchList> targetTouches = e->CopyTouches(aParam.mTargetTouches);
|
|
RefPtr<TouchList> changedTouches = e->CopyTouches(aParam.mChangedTouches);
|
|
e->InitTouchEvent(aType, aParam.mBubbles, aParam.mCancelable, aParam.mView,
|
|
aParam.mDetail, aParam.mCtrlKey, aParam.mAltKey,
|
|
aParam.mShiftKey, aParam.mMetaKey, touches, targetTouches,
|
|
changedTouches);
|
|
e->SetTrusted(trusted);
|
|
e->SetComposed(aParam.mComposed);
|
|
return e.forget();
|
|
}
|
|
|
|
already_AddRefed<TouchList> TouchEvent::CopyTouches(
|
|
const Sequence<OwningNonNull<Touch>>& aTouches) {
|
|
RefPtr<TouchList> list = new TouchList(GetParentObject());
|
|
size_t len = aTouches.Length();
|
|
for (size_t i = 0; i < len; ++i) {
|
|
list->Append(aTouches[i]);
|
|
}
|
|
return list.forget();
|
|
}
|
|
|
|
bool TouchEvent::AltKey() { return mEvent->AsTouchEvent()->IsAlt(); }
|
|
|
|
bool TouchEvent::MetaKey() { return mEvent->AsTouchEvent()->IsMeta(); }
|
|
|
|
bool TouchEvent::CtrlKey() { return mEvent->AsTouchEvent()->IsControl(); }
|
|
|
|
bool TouchEvent::ShiftKey() { return mEvent->AsTouchEvent()->IsShift(); }
|
|
|
|
} // namespace mozilla::dom
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::dom;
|
|
|
|
already_AddRefed<TouchEvent> NS_NewDOMTouchEvent(EventTarget* aOwner,
|
|
nsPresContext* aPresContext,
|
|
WidgetTouchEvent* aEvent) {
|
|
RefPtr<TouchEvent> it = new TouchEvent(aOwner, aPresContext, aEvent);
|
|
return it.forget();
|
|
}
|