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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 {
namespace dom {
class TouchList final : public nsISupports, public nsWrapperCache {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_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 PlatformSupportsTouch();
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 dom
} // namespace mozilla
already_AddRefed<mozilla::dom::TouchEvent> NS_NewDOMTouchEvent(
mozilla::dom::EventTarget* aOwner, nsPresContext* aPresContext,
mozilla::WidgetTouchEvent* aEvent);
#endif // mozilla_dom_TouchEvent_h_