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-rw-r--r--dom/events/TouchEvent.h121
1 files changed, 121 insertions, 0 deletions
diff --git a/dom/events/TouchEvent.h b/dom/events/TouchEvent.h
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+/* -*- 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_