gecko-dev/dom/events/KeyboardEvent.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: */
2012-05-21 15:12:37 +04:00
/* 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_KeyboardEvent_h_
#define mozilla_dom_KeyboardEvent_h_
#include "mozilla/dom/UIEvent.h"
#include "mozilla/dom/KeyboardEventBinding.h"
#include "mozilla/EventForwards.h"
#include "nsRFPService.h"
namespace mozilla {
namespace dom {
class KeyboardEvent : public UIEvent
{
public:
KeyboardEvent(EventTarget* aOwner,
nsPresContext* aPresContext,
WidgetKeyboardEvent* aEvent);
NS_INLINE_DECL_REFCOUNTING_INHERITED(KeyboardEvent, UIEvent)
virtual KeyboardEvent* AsKeyboardEvent() override
{
return this;
}
static already_AddRefed<KeyboardEvent> Constructor(
const GlobalObject& aGlobal,
const nsAString& aType,
const KeyboardEventInit& aParam,
ErrorResult& aRv);
virtual JSObject*
WrapObjectInternal(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override
{
return KeyboardEvent_Binding::Wrap(aCx, this, aGivenProto);
}
bool AltKey(CallerType aCallerType = CallerType::System);
bool CtrlKey(CallerType aCallerType = CallerType::System);
bool ShiftKey(CallerType aCallerType = CallerType::System);
bool MetaKey();
bool GetModifierState(const nsAString& aKey,
CallerType aCallerType = CallerType::System)
{
bool modifierState = GetModifierStateInternal(aKey);
if (!ShouldResistFingerprinting(aCallerType)) {
return modifierState;
}
Modifiers modifier = WidgetInputEvent::GetModifier(aKey);
return GetSpoofedModifierStates(modifier, modifierState);
}
bool Repeat();
bool IsComposing();
void GetKey(nsAString& aKey) const;
uint32_t CharCode();
uint32_t KeyCode(CallerType aCallerType = CallerType::System);
virtual uint32_t Which(CallerType aCallerType = CallerType::System) override;
uint32_t Location();
void GetCode(nsAString& aCode, CallerType aCallerType = CallerType::System);
void GetInitDict(KeyboardEventInit& aParam);
void InitKeyEvent(const nsAString& aType, bool aCanBubble, bool aCancelable,
nsGlobalWindowInner* aView, bool aCtrlKey, bool aAltKey,
bool aShiftKey, bool aMetaKey,
uint32_t aKeyCode, uint32_t aCharCode);
void InitKeyboardEvent(const nsAString& aType,
bool aCanBubble, bool aCancelable,
nsGlobalWindowInner* aView, const nsAString& aKey,
uint32_t aLocation, bool aCtrlKey, bool aAltKey,
bool aShiftKey, bool aMetaKey, ErrorResult& aRv);
protected:
~KeyboardEvent() {}
void InitWithKeyboardEventInit(EventTarget* aOwner,
const nsAString& aType,
const KeyboardEventInit& aParam,
ErrorResult& aRv);
private:
// True, if the instance is created with Constructor().
bool mInitializedByCtor;
// If the instance is created with Constructor(), which may have independent
// value. mInitializedWhichValue stores it. I.e., this is invalid when
// mInitializedByCtor is false.
uint32_t mInitializedWhichValue;
// This method returns the boolean to indicate whether spoofing keyboard
// event for fingerprinting resistance. It will return true when pref
// 'privacy.resistFingerprinting' is true and the event target is content.
// Otherwise, it will return false.
bool ShouldResistFingerprinting(CallerType aCallerType);
// This method returns the nsIDocument which is associated with the event
// target.
already_AddRefed<nsIDocument> GetDocument();
// This method returns the spoofed modifier state of the given modifier key
// for fingerprinting resistance.
bool GetSpoofedModifierStates(const Modifiers aModifierKey,
const bool aRawModifierState);
};
} // namespace dom
} // namespace mozilla
already_AddRefed<mozilla::dom::KeyboardEvent>
NS_NewDOMKeyboardEvent(mozilla::dom::EventTarget* aOwner,
nsPresContext* aPresContext,
mozilla::WidgetKeyboardEvent* aEvent);
#endif // mozilla_dom_KeyboardEvent_h_