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-rw-r--r--dom/events/UIEvent.h124
1 files changed, 124 insertions, 0 deletions
diff --git a/dom/events/UIEvent.h b/dom/events/UIEvent.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_UIEvent_h_
+#define mozilla_dom_UIEvent_h_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/Nullable.h"
+#include "mozilla/dom/UIEventBinding.h"
+#include "mozilla/dom/WindowProxyHolder.h"
+#include "nsDeviceContext.h"
+#include "nsDocShell.h"
+#include "nsIContent.h"
+#include "nsPresContext.h"
+
+class nsINode;
+
+namespace mozilla::dom {
+
+class UIEvent : public Event {
+ public:
+ UIEvent(EventTarget* aOwner, nsPresContext* aPresContext,
+ WidgetGUIEvent* aEvent);
+
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(UIEvent, Event)
+
+ void DuplicatePrivateData() override;
+ void Serialize(IPC::MessageWriter* aWriter,
+ bool aSerializeInterfaceType) override;
+ bool Deserialize(IPC::MessageReader* aReader) override;
+
+ static already_AddRefed<UIEvent> Constructor(const GlobalObject& aGlobal,
+ const nsAString& aType,
+ const UIEventInit& aParam);
+
+ virtual JSObject* WrapObjectInternal(
+ JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override {
+ return UIEvent_Binding::Wrap(aCx, this, aGivenProto);
+ }
+
+ UIEvent* AsUIEvent() override { return this; }
+
+ void InitUIEvent(const nsAString& typeArg, bool canBubbleArg,
+ bool cancelableArg, nsGlobalWindowInner* viewArg,
+ int32_t detailArg);
+
+ Nullable<WindowProxyHolder> GetView() const {
+ if (!mView) {
+ return nullptr;
+ }
+ return WindowProxyHolder(mView->GetBrowsingContext());
+ }
+
+ int32_t Detail() const { return mDetail; }
+
+ int32_t LayerX() const { return GetLayerPoint().x; }
+
+ int32_t LayerY() const { return GetLayerPoint().y; }
+
+ virtual uint32_t Which(CallerType aCallerType = CallerType::System) {
+ MOZ_ASSERT(mEvent->mClass != eKeyboardEventClass,
+ "Key events should override Which()");
+ MOZ_ASSERT(mEvent->mClass != eMouseEventClass,
+ "Mouse events should override Which()");
+ return 0;
+ }
+
+ /**
+ * GetRangeParent() should be used only by JS. C++ callers should use
+ * GetRangeParentContent() or GetRangeParentContentAndOffset() instead.
+ */
+ MOZ_CAN_RUN_SCRIPT already_AddRefed<nsINode> GetRangeParent() {
+ return GetRangeParentContent();
+ }
+ MOZ_CAN_RUN_SCRIPT already_AddRefed<nsIContent> GetRangeParentContent() {
+ return GetRangeParentContentAndOffset(nullptr);
+ }
+ /**
+ * aOffset is optional (i.e., can be nullptr), but when you call this with
+ * nullptr, you should use GetRangeParentContent() instead.
+ */
+ MOZ_CAN_RUN_SCRIPT already_AddRefed<nsIContent>
+ GetRangeParentContentAndOffset(int32_t* aOffset) const;
+
+ /**
+ * If you also need to compute range parent in C++ code, you should use
+ * GetRangeParentContentAndOffset() instead.
+ */
+ MOZ_CAN_RUN_SCRIPT int32_t RangeOffset() const;
+
+ protected:
+ ~UIEvent() = default;
+
+ // Internal helper functions
+ nsIntPoint GetMovementPoint();
+ nsIntPoint GetLayerPoint() const;
+
+ nsCOMPtr<nsPIDOMWindowOuter> mView;
+ int32_t mDetail;
+ CSSIntPoint mDefaultClientPoint;
+ // Screenpoint is mEvent->mRefPoint.
+ nsIntPoint mLayerPoint;
+ CSSIntPoint mPagePoint;
+ nsIntPoint mMovementPoint;
+ bool mIsPointerLocked;
+ CSSIntPoint mLastClientPoint;
+
+ static Modifiers ComputeModifierState(const nsAString& aModifiersList);
+ bool GetModifierStateInternal(const nsAString& aKey);
+ void InitModifiers(const EventModifierInit& aParam);
+};
+
+} // namespace mozilla::dom
+
+already_AddRefed<mozilla::dom::UIEvent> NS_NewDOMUIEvent(
+ mozilla::dom::EventTarget* aOwner, nsPresContext* aPresContext,
+ mozilla::WidgetGUIEvent* aEvent);
+
+#endif // mozilla_dom_UIEvent_h_