gecko-dev/dom/xbl/nsXBLEventHandler.h

/* -*- 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 nsXBLEventHandler_h__
#define nsXBLEventHandler_h__

#include "mozilla/Attributes.h"
#include "nsCOMPtr.h"
#include "nsIDOMEventListener.h"
#include "nsTArray.h"

class nsAtom;
class nsXBLPrototypeHandler;

namespace mozilla {
struct IgnoreModifierState;
namespace dom {
class Event;
class KeyboardEvent;
}  // namespace dom
}  // namespace mozilla

class nsXBLEventHandler : public nsIDOMEventListener {
 public:
  explicit nsXBLEventHandler(nsXBLPrototypeHandler* aHandler);

  NS_DECL_ISUPPORTS

  NS_DECL_NSIDOMEVENTLISTENER

 protected:
  virtual ~nsXBLEventHandler();
  nsXBLPrototypeHandler* mProtoHandler;

 private:
  nsXBLEventHandler();
  virtual bool EventMatched(mozilla::dom::Event* aEvent) { return true; }
};

class nsXBLMouseEventHandler : public nsXBLEventHandler {
 public:
  explicit nsXBLMouseEventHandler(nsXBLPrototypeHandler* aHandler);
  virtual ~nsXBLMouseEventHandler();

 private:
  bool EventMatched(mozilla::dom::Event* aEvent) override;
};

class nsXBLKeyEventHandler : public nsIDOMEventListener {
  typedef mozilla::IgnoreModifierState IgnoreModifierState;

 public:
  nsXBLKeyEventHandler(nsAtom* aEventType, uint8_t aPhase, uint8_t aType);

  NS_DECL_ISUPPORTS

  NS_DECL_NSIDOMEVENTLISTENER

  void AddProtoHandler(nsXBLPrototypeHandler* aProtoHandler) {
    mProtoHandlers.AppendElement(aProtoHandler);
  }

  bool Matches(nsAtom* aEventType, uint8_t aPhase, uint8_t aType) const {
    return (mEventType == aEventType && mPhase == aPhase && mType == aType);
  }

  void GetEventName(nsAString& aString) const { mEventType->ToString(aString); }

  uint8_t GetPhase() const { return mPhase; }

  uint8_t GetType() const { return mType; }

  void SetIsBoundToChrome(bool aIsBoundToChrome) {
    mIsBoundToChrome = aIsBoundToChrome;
  }

  void SetUsingContentXBLScope(bool aUsingContentXBLScope) {
    mUsingContentXBLScope = aUsingContentXBLScope;
  }

 private:
  nsXBLKeyEventHandler();
  virtual ~nsXBLKeyEventHandler();

  bool ExecuteMatchedHandlers(mozilla::dom::KeyboardEvent* aEvent,
                              uint32_t aCharCode,
                              const IgnoreModifierState& aIgnoreModifierState);

  nsTArray<nsXBLPrototypeHandler*> mProtoHandlers;
  RefPtr<nsAtom> mEventType;
  uint8_t mPhase;
  uint8_t mType;
  bool mIsBoundToChrome;
  bool mUsingContentXBLScope;
};

already_AddRefed<nsXBLEventHandler> NS_NewXBLEventHandler(
    nsXBLPrototypeHandler* aHandler, nsAtom* aEventType);

#endif