1 files changed, 121 insertions, 0 deletions
diff --git a/dom/events/TouchEvent.h b/dom/events/TouchEvent.h
new file mode 100644
index 0000000000..eb88aa5868
--- /dev/null
+++ b/dom/events/TouchEvent.h
@@ -0,0 +1,121 @@
+/* -*- 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/. */
+#ifndef mozilla_dom_TouchEvent_h_
+#define mozilla_dom_TouchEvent_h_
+
+#include "mozilla/dom/Touch.h"
+#include "mozilla/dom/TouchEventBinding.h"
+#include "mozilla/dom/UIEvent.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/EventForwards.h"
+#include "mozilla/TouchEvents.h"
+#include "nsJSEnvironment.h"
+#include "nsStringFwd.h"
+#include "nsWrapperCache.h"
+
+namespace mozilla::dom {
+
+class TouchList final : public nsISupports, public nsWrapperCache {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(TouchList)
+
+  explicit TouchList(nsISupports* aParent) : mParent(aParent) {
+    nsJSContext::LikelyShortLivingObjectCreated();
+  }
+  TouchList(nsISupports* aParent, const WidgetTouchEvent::TouchArray& aTouches)
+      : mParent(aParent), mPoints(aTouches.Clone()) {
+    nsJSContext::LikelyShortLivingObjectCreated();
+  }
+
+  void Append(Touch* aPoint) { mPoints.AppendElement(aPoint); }
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  nsISupports* GetParentObject() const { return mParent; }
+
+  static bool PrefEnabled(JSContext* aCx, JSObject* aGlobal);
+
+  uint32_t Length() const { return mPoints.Length(); }
+  Touch* Item(uint32_t aIndex) const { return mPoints.SafeElementAt(aIndex); }
+  Touch* IndexedGetter(uint32_t aIndex, bool& aFound) const {
+    aFound = aIndex < mPoints.Length();
+    if (!aFound) {
+      return nullptr;
+    }
+    return mPoints[aIndex];
+  }
+
+  void Clear() { mPoints.Clear(); }
+
+ protected:
+  ~TouchList() = default;
+
+  nsCOMPtr<nsISupports> mParent;
+  WidgetTouchEvent::TouchArray mPoints;
+};
+
+class TouchEvent : public UIEvent {
+ public:
+  TouchEvent(EventTarget* aOwner, nsPresContext* aPresContext,
+             WidgetTouchEvent* aEvent);
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(TouchEvent, UIEvent)
+
+  virtual JSObject* WrapObjectInternal(
+      JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override {
+    return TouchEvent_Binding::Wrap(aCx, this, aGivenProto);
+  }
+
+  already_AddRefed<TouchList> CopyTouches(
+      const Sequence<OwningNonNull<Touch>>& aTouches);
+
+  TouchList* Touches();
+  // TargetTouches() populates mTargetTouches from widget event's touch list.
+  TouchList* TargetTouches();
+  // GetExistingTargetTouches just returns the existing target touches list.
+  TouchList* GetExistingTargetTouches() { return mTargetTouches; }
+  TouchList* ChangedTouches();
+
+  bool AltKey();
+  bool MetaKey();
+  bool CtrlKey();
+  bool ShiftKey();
+
+  void 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);
+
+  static bool PrefEnabled(JSContext* aCx, JSObject* aGlobal);
+  static bool PrefEnabled(nsIDocShell* aDocShell);
+  static bool LegacyAPIEnabled(JSContext* aCx, JSObject* aGlobal);
+  static bool LegacyAPIEnabled(nsIDocShell* aDocShell, bool aCallerIsSystem);
+
+  static already_AddRefed<TouchEvent> Constructor(const GlobalObject& aGlobal,
+                                                  const nsAString& aType,
+                                                  const TouchEventInit& aParam);
+
+ protected:
+  ~TouchEvent() = default;
+
+  void AssignTouchesToWidgetEvent(TouchList* aList, bool aCheckDuplicates);
+
+  RefPtr<TouchList> mTouches;
+  RefPtr<TouchList> mTargetTouches;
+  RefPtr<TouchList> mChangedTouches;
+};
+
+}  // namespace mozilla::dom
+
+already_AddRefed<mozilla::dom::TouchEvent> NS_NewDOMTouchEvent(
+    mozilla::dom::EventTarget* aOwner, nsPresContext* aPresContext,
+    mozilla::WidgetTouchEvent* aEvent);
+
+#endif  // mozilla_dom_TouchEvent_h_