pjs/dom/workers/EventTarget.h

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Web Workers.
 *
 * The Initial Developer of the Original Code is
 *   The Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Ben Turner <bent.mozilla@gmail.com> (Original Author)
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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#ifndef mozilla_dom_workers_eventtarget_h__
#define mozilla_dom_workers_eventtarget_h__

#include "jspubtd.h"

#include "ListenerManager.h"

BEGIN_WORKERS_NAMESPACE

namespace events {

// If you inherit this class then you need to add some way to compare the
// JSClass for your subclass in EnsureObjectIsEventTarget().
class EventTarget : public PrivatizableBase
{
  ListenerManager mListenerManager;

protected:
  EventTarget();
  ~EventTarget();

  void
  TraceInstance(JSTracer* aTrc)
  {
    mListenerManager.Trace(aTrc);
  }

  void
  FinalizeInstance(JSContext* aCx)
  {
    mListenerManager.Finalize(aCx);
  }

  bool
  GetEventListenerOnEventTarget(JSContext* aCx, const char* aType, jsval* aVp);

  bool
  SetEventListenerOnEventTarget(JSContext* aCx, const char* aType, jsval* aVp);

public:
  static EventTarget*
  FromJSObject(JSObject* aObj);

  static JSBool
  AddEventListener(JSContext* aCx, uintN aArgc, jsval* aVp);

  static JSBool
  RemoveEventListener(JSContext* aCx, uintN aArgc, jsval* aVp);

  static JSBool
  DispatchEvent(JSContext* aCx, uintN aArgc, jsval* aVp);

  bool
  HasListeners()
  {
    return mListenerManager.HasListeners();
  }

  bool
  HasListenersForType(JSContext* aCx, JSString* aType)
  {
    return mListenerManager.HasListenersForType(aCx, aType);
  }
};

JSObject*
InitEventTargetClass(JSContext* aCx, JSObject* aGlobal, bool aMainRuntime);

} // namespace events

END_WORKERS_NAMESPACE

#endif /* mozilla_dom_workers_eventtarget_h__ */