Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 335 insertions, 0 deletions

diff --git a/dom/events/UIEvent.cpp b/dom/events/UIEvent.cpp
new file mode 100644
index 0000000000..ce43eb08f5
--- /dev/null
+++ b/dom/events/UIEvent.cpp
@@ -0,0 +1,335 @@
+/* -*- 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 "base/basictypes.h"
+#include "ipc/IPCMessageUtils.h"
+#include "ipc/IPCMessageUtilsSpecializations.h"
+#include "mozilla/dom/UIEvent.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/ContentEvents.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/PointerLockManager.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/TextEvents.h"
+#include "nsCOMPtr.h"
+#include "nsContentUtils.h"
+#include "nsIContent.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsIDocShell.h"
+#include "nsIFrame.h"
+#include "nsLayoutUtils.h"
+#include "prtime.h"
+
+namespace mozilla::dom {
+
+UIEvent::UIEvent(EventTarget* aOwner, nsPresContext* aPresContext,
+                 WidgetGUIEvent* aEvent)
+    : Event(aOwner, aPresContext,
+            aEvent ? aEvent : new InternalUIEvent(false, eVoidEvent, nullptr)),
+      mDefaultClientPoint(0, 0),
+      mLayerPoint(0, 0),
+      mPagePoint(0, 0),
+      mMovementPoint(0, 0) {
+  if (aEvent) {
+    mEventIsInternal = false;
+  } else {
+    mEventIsInternal = true;
+  }
+
+  // Fill mDetail and mView according to the mEvent (widget-generated
+  // event) we've got
+  switch (mEvent->mClass) {
+    case eUIEventClass: {
+      mDetail = mEvent->AsUIEvent()->mDetail;
+      break;
+    }
+
+    case eScrollPortEventClass: {
+      InternalScrollPortEvent* scrollEvent = mEvent->AsScrollPortEvent();
+      mDetail = static_cast<int32_t>(scrollEvent->mOrient);
+      break;
+    }
+
+    default:
+      mDetail = 0;
+      break;
+  }
+
+  mView = nullptr;
+  if (mPresContext) {
+    nsIDocShell* docShell = mPresContext->GetDocShell();
+    if (docShell) {
+      mView = docShell->GetWindow();
+    }
+  }
+}
+
+// static
+already_AddRefed<UIEvent> UIEvent::Constructor(const GlobalObject& aGlobal,
+                                               const nsAString& aType,
+                                               const UIEventInit& aParam) {
+  nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
+  RefPtr<UIEvent> e = new UIEvent(t, nullptr, nullptr);
+  bool trusted = e->Init(t);
+  e->InitUIEvent(aType, aParam.mBubbles, aParam.mCancelable, aParam.mView,
+                 aParam.mDetail);
+  e->SetTrusted(trusted);
+  e->SetComposed(aParam.mComposed);
+  return e.forget();
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(UIEvent, Event, mView)
+
+NS_IMPL_ADDREF_INHERITED(UIEvent, Event)
+NS_IMPL_RELEASE_INHERITED(UIEvent, Event)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(UIEvent)
+NS_INTERFACE_MAP_END_INHERITING(Event)
+
+static nsIntPoint DevPixelsToCSSPixels(const LayoutDeviceIntPoint& aPoint,
+                                       nsPresContext* aContext) {
+  return nsIntPoint(aContext->DevPixelsToIntCSSPixels(aPoint.x),
+                    aContext->DevPixelsToIntCSSPixels(aPoint.y));
+}
+
+nsIntPoint UIEvent::GetMovementPoint() {
+  if (mEvent->mFlags.mIsPositionless) {
+    return nsIntPoint(0, 0);
+  }
+
+  if (mPrivateDataDuplicated || mEventIsInternal) {
+    return mMovementPoint;
+  }
+
+  if (!mEvent || !mEvent->AsGUIEvent()->mWidget ||
+      (mEvent->mMessage != eMouseMove && mEvent->mMessage != ePointerMove)) {
+    // Pointer Lock spec defines that movementX/Y must be zero for all mouse
+    // events except mousemove.
+    return nsIntPoint(0, 0);
+  }
+
+  // Calculate the delta between the last screen point and the current one.
+  nsIntPoint current = DevPixelsToCSSPixels(mEvent->mRefPoint, mPresContext);
+  nsIntPoint last = DevPixelsToCSSPixels(mEvent->mLastRefPoint, mPresContext);
+  return current - last;
+}
+
+void UIEvent::InitUIEvent(const nsAString& typeArg, bool canBubbleArg,
+                          bool cancelableArg, nsGlobalWindowInner* viewArg,
+                          int32_t detailArg) {
+  if (NS_WARN_IF(mEvent->mFlags.mIsBeingDispatched)) {
+    return;
+  }
+
+  Event::InitEvent(typeArg, canBubbleArg, cancelableArg);
+
+  mDetail = detailArg;
+  mView = viewArg ? viewArg->GetOuterWindow() : nullptr;
+}
+
+already_AddRefed<nsIContent> UIEvent::GetRangeParentContentAndOffset(
+    int32_t* aOffset) const {
+  if (NS_WARN_IF(!mPresContext)) {
+    return nullptr;
+  }
+  RefPtr<PresShell> presShell = mPresContext->GetPresShell();
+  if (NS_WARN_IF(!presShell)) {
+    return nullptr;
+  }
+  nsCOMPtr<nsIContent> container;
+  nsLayoutUtils::GetContainerAndOffsetAtEvent(
+      presShell, mEvent, getter_AddRefs(container), aOffset);
+  return container.forget();
+}
+
+int32_t UIEvent::RangeOffset() const {
+  if (NS_WARN_IF(!mPresContext)) {
+    return 0;
+  }
+  RefPtr<PresShell> presShell = mPresContext->GetPresShell();
+  if (NS_WARN_IF(!presShell)) {
+    return 0;
+  }
+  int32_t offset = 0;
+  nsLayoutUtils::GetContainerAndOffsetAtEvent(presShell, mEvent, nullptr,
+                                              &offset);
+  return offset;
+}
+
+nsIntPoint UIEvent::GetLayerPoint() const {
+  if (mEvent->mFlags.mIsPositionless) {
+    return nsIntPoint(0, 0);
+  }
+
+  if (!mEvent ||
+      (mEvent->mClass != eMouseEventClass &&
+       mEvent->mClass != eMouseScrollEventClass &&
+       mEvent->mClass != eWheelEventClass &&
+       mEvent->mClass != ePointerEventClass &&
+       mEvent->mClass != eTouchEventClass &&
+       mEvent->mClass != eDragEventClass &&
+       mEvent->mClass != eSimpleGestureEventClass) ||
+      !mPresContext || mEventIsInternal) {
+    return mLayerPoint;
+  }
+  // XXX I'm not really sure this is correct; it's my best shot, though
+  nsIFrame* targetFrame = mPresContext->EventStateManager()->GetEventTarget();
+  if (!targetFrame) return mLayerPoint;
+  nsIFrame* layer = nsLayoutUtils::GetClosestLayer(targetFrame);
+  nsPoint pt(
+      nsLayoutUtils::GetEventCoordinatesRelativeTo(mEvent, RelativeTo{layer}));
+  return nsIntPoint(nsPresContext::AppUnitsToIntCSSPixels(pt.x),
+                    nsPresContext::AppUnitsToIntCSSPixels(pt.y));
+}
+
+void UIEvent::DuplicatePrivateData() {
+  mDefaultClientPoint = Event::GetClientCoords(
+      mPresContext, mEvent, mEvent->mRefPoint, mDefaultClientPoint);
+  mMovementPoint = GetMovementPoint();
+  mLayerPoint = GetLayerPoint();
+  mPagePoint = Event::GetPageCoords(mPresContext, mEvent, mEvent->mRefPoint,
+                                    mDefaultClientPoint);
+  // GetScreenPoint converts mEvent->mRefPoint to right coordinates.
+  CSSIntPoint screenPoint =
+      Event::GetScreenCoords(mPresContext, mEvent, mEvent->mRefPoint)
+          .valueOr(CSSIntPoint{0, 0});
+
+  Event::DuplicatePrivateData();
+
+  CSSToLayoutDeviceScale scale = mPresContext
+                                     ? mPresContext->CSSToDevPixelScale()
+                                     : CSSToLayoutDeviceScale(1);
+  mEvent->mRefPoint = RoundedToInt(screenPoint * scale);
+}
+
+void UIEvent::Serialize(IPC::MessageWriter* aWriter,
+                        bool aSerializeInterfaceType) {
+  if (aSerializeInterfaceType) {
+    IPC::WriteParam(aWriter, u"uievent"_ns);
+  }
+
+  Event::Serialize(aWriter, false);
+
+  IPC::WriteParam(aWriter, Detail());
+}
+
+bool UIEvent::Deserialize(IPC::MessageReader* aReader) {
+  NS_ENSURE_TRUE(Event::Deserialize(aReader), false);
+  NS_ENSURE_TRUE(IPC::ReadParam(aReader, &mDetail), false);
+  return true;
+}
+
+// XXX Following struct and array are used only in
+//     UIEvent::ComputeModifierState(), but if we define them in it,
+//     we fail to build on Mac at calling mozilla::ArrayLength().
+struct ModifierPair {
+  Modifier modifier;
+  const char* name;
+};
+static const ModifierPair kPairs[] = {
+    // clang-format off
+  { MODIFIER_ALT,        NS_DOM_KEYNAME_ALT },
+  { MODIFIER_ALTGRAPH,   NS_DOM_KEYNAME_ALTGRAPH },
+  { MODIFIER_CAPSLOCK,   NS_DOM_KEYNAME_CAPSLOCK },
+  { MODIFIER_CONTROL,    NS_DOM_KEYNAME_CONTROL },
+  { MODIFIER_FN,         NS_DOM_KEYNAME_FN },
+  { MODIFIER_FNLOCK,     NS_DOM_KEYNAME_FNLOCK },
+  { MODIFIER_META,       NS_DOM_KEYNAME_META },
+  { MODIFIER_NUMLOCK,    NS_DOM_KEYNAME_NUMLOCK },
+  { MODIFIER_SCROLLLOCK, NS_DOM_KEYNAME_SCROLLLOCK },
+  { MODIFIER_SHIFT,      NS_DOM_KEYNAME_SHIFT },
+  { MODIFIER_SYMBOL,     NS_DOM_KEYNAME_SYMBOL },
+  { MODIFIER_SYMBOLLOCK, NS_DOM_KEYNAME_SYMBOLLOCK },
+    // clang-format on
+};
+
+// static
+Modifiers UIEvent::ComputeModifierState(const nsAString& aModifiersList) {
+  if (aModifiersList.IsEmpty()) {
+    return 0;
+  }
+
+  // Be careful about the performance.  If aModifiersList is too long,
+  // parsing it needs too long time.
+  // XXX Should we abort if aModifiersList is too long?
+
+  Modifiers modifiers = 0;
+
+  nsAString::const_iterator listStart, listEnd;
+  aModifiersList.BeginReading(listStart);
+  aModifiersList.EndReading(listEnd);
+
+  for (uint32_t i = 0; i < ArrayLength(kPairs); i++) {
+    nsAString::const_iterator start(listStart), end(listEnd);
+    if (!FindInReadable(NS_ConvertASCIItoUTF16(kPairs[i].name), start, end)) {
+      continue;
+    }
+
+    if ((start != listStart && !NS_IsAsciiWhitespace(*(--start))) ||
+        (end != listEnd && !NS_IsAsciiWhitespace(*(end)))) {
+      continue;
+    }
+    modifiers |= kPairs[i].modifier;
+  }
+
+  return modifiers;
+}
+
+bool UIEvent::GetModifierStateInternal(const nsAString& aKey) {
+  WidgetInputEvent* inputEvent = mEvent->AsInputEvent();
+  MOZ_ASSERT(inputEvent, "mEvent must be WidgetInputEvent or derived class");
+  return ((inputEvent->mModifiers & WidgetInputEvent::GetModifier(aKey)) != 0);
+}
+
+static Modifiers ConvertToModifiers(const EventModifierInit& aParam) {
+  Modifiers bits = MODIFIER_NONE;
+
+#define SET_MODIFIER(aName, aValue) bits |= aParam.m##aName ? (aValue) : 0;
+
+  SET_MODIFIER(CtrlKey, MODIFIER_CONTROL)
+  SET_MODIFIER(ShiftKey, MODIFIER_SHIFT)
+  SET_MODIFIER(AltKey, MODIFIER_ALT)
+  SET_MODIFIER(MetaKey, MODIFIER_META)
+  SET_MODIFIER(ModifierAltGraph, MODIFIER_ALTGRAPH)
+  SET_MODIFIER(ModifierCapsLock, MODIFIER_CAPSLOCK)
+  SET_MODIFIER(ModifierFn, MODIFIER_FN)
+  SET_MODIFIER(ModifierFnLock, MODIFIER_FNLOCK)
+  SET_MODIFIER(ModifierNumLock, MODIFIER_NUMLOCK)
+  SET_MODIFIER(ModifierScrollLock, MODIFIER_SCROLLLOCK)
+  SET_MODIFIER(ModifierSymbol, MODIFIER_SYMBOL)
+  SET_MODIFIER(ModifierSymbolLock, MODIFIER_SYMBOLLOCK)
+
+#undef SET_MODIFIER
+
+  return bits;
+}
+
+void UIEvent::InitModifiers(const EventModifierInit& aParam) {
+  if (NS_WARN_IF(!mEvent)) {
+    return;
+  }
+  WidgetInputEvent* inputEvent = mEvent->AsInputEvent();
+  MOZ_ASSERT(inputEvent,
+             "This method shouldn't be called if it doesn't have modifiers");
+  if (NS_WARN_IF(!inputEvent)) {
+    return;
+  }
+
+  inputEvent->mModifiers = ConvertToModifiers(aParam);
+}
+
+}  // namespace mozilla::dom
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+already_AddRefed<UIEvent> NS_NewDOMUIEvent(EventTarget* aOwner,
+                                           nsPresContext* aPresContext,
+                                           WidgetGUIEvent* aEvent) {
+  RefPtr<UIEvent> it = new UIEvent(aOwner, aPresContext, aEvent);
+  return it.forget();
+}