зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
4.1 KiB
C++
122 строки
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_TouchEvent_h_
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#define mozilla_dom_TouchEvent_h_
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#include "mozilla/dom/Touch.h"
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#include "mozilla/dom/TouchEventBinding.h"
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#include "mozilla/dom/UIEvent.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/TouchEvents.h"
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#include "nsJSEnvironment.h"
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#include "nsStringFwd.h"
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#include "nsWrapperCache.h"
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namespace mozilla::dom {
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class TouchList final : public nsISupports, public nsWrapperCache {
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TouchList)
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explicit TouchList(nsISupports* aParent) : mParent(aParent) {
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nsJSContext::LikelyShortLivingObjectCreated();
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}
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TouchList(nsISupports* aParent, const WidgetTouchEvent::TouchArray& aTouches)
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: mParent(aParent), mPoints(aTouches.Clone()) {
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nsJSContext::LikelyShortLivingObjectCreated();
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}
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void Append(Touch* aPoint) { mPoints.AppendElement(aPoint); }
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virtual JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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nsISupports* GetParentObject() const { return mParent; }
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static bool PrefEnabled(JSContext* aCx, JSObject* aGlobal);
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uint32_t Length() const { return mPoints.Length(); }
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Touch* Item(uint32_t aIndex) const { return mPoints.SafeElementAt(aIndex); }
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Touch* IndexedGetter(uint32_t aIndex, bool& aFound) const {
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aFound = aIndex < mPoints.Length();
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if (!aFound) {
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return nullptr;
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}
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return mPoints[aIndex];
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}
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void Clear() { mPoints.Clear(); }
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protected:
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~TouchList() = default;
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nsCOMPtr<nsISupports> mParent;
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WidgetTouchEvent::TouchArray mPoints;
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};
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class TouchEvent : public UIEvent {
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public:
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TouchEvent(EventTarget* aOwner, nsPresContext* aPresContext,
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WidgetTouchEvent* aEvent);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(TouchEvent, UIEvent)
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virtual JSObject* WrapObjectInternal(
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JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override {
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return TouchEvent_Binding::Wrap(aCx, this, aGivenProto);
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}
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already_AddRefed<TouchList> CopyTouches(
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const Sequence<OwningNonNull<Touch>>& aTouches);
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TouchList* Touches();
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// TargetTouches() populates mTargetTouches from widget event's touch list.
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TouchList* TargetTouches();
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// GetExistingTargetTouches just returns the existing target touches list.
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TouchList* GetExistingTargetTouches() { return mTargetTouches; }
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TouchList* ChangedTouches();
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bool AltKey();
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bool MetaKey();
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bool CtrlKey();
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bool ShiftKey();
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void InitTouchEvent(const nsAString& aType, bool aCanBubble, bool aCancelable,
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nsGlobalWindowInner* aView, int32_t aDetail,
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bool aCtrlKey, bool aAltKey, bool aShiftKey,
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bool aMetaKey, TouchList* aTouches,
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TouchList* aTargetTouches, TouchList* aChangedTouches);
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static bool PrefEnabled(JSContext* aCx, JSObject* aGlobal);
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static bool PrefEnabled(nsIDocShell* aDocShell);
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static bool LegacyAPIEnabled(JSContext* aCx, JSObject* aGlobal);
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static bool LegacyAPIEnabled(nsIDocShell* aDocShell, bool aCallerIsSystem);
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static already_AddRefed<TouchEvent> Constructor(const GlobalObject& aGlobal,
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const nsAString& aType,
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const TouchEventInit& aParam);
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protected:
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~TouchEvent() = default;
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void AssignTouchesToWidgetEvent(TouchList* aList, bool aCheckDuplicates);
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RefPtr<TouchList> mTouches;
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RefPtr<TouchList> mTargetTouches;
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RefPtr<TouchList> mChangedTouches;
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};
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} // namespace mozilla::dom
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already_AddRefed<mozilla::dom::TouchEvent> NS_NewDOMTouchEvent(
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mozilla::dom::EventTarget* aOwner, nsPresContext* aPresContext,
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mozilla::WidgetTouchEvent* aEvent);
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#endif // mozilla_dom_TouchEvent_h_
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