RegisteredEventListener.h   [plain text]

/*
 * Copyright (C) 2001 Peter Kelly (pmk@post.com)
 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
 * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef RegisteredEventListener_h
#define RegisteredEventListener_h

#include "EventListener.h"
#include <wtf/RefPtr.h>

namespace WebCore {

    class RegisteredEventListener {
    public:
        struct Options {
            Options(bool capture = false, bool passive = false, bool once = false)
                : capture(capture)
                , passive(passive)
                , once(once)
            { }

            bool capture;
            bool passive;
            bool once;
        };

        RegisteredEventListener(Ref<EventListener>&& listener, const Options& options)
            : listener(WTFMove(listener))
            , useCapture(options.capture)
            , isPassive(options.passive)
            , isOnce(options.once)
        {
        }

        RegisteredEventListener(Ref<EventListener>&& listener, bool useCapture)
            : listener(WTFMove(listener))
            , useCapture(useCapture)
        {
        }

        RefPtr<EventListener> listener;
        bool useCapture { false };
        bool isPassive { false };
        bool isOnce { false };
    };
    
    inline bool operator==(const RegisteredEventListener& a, const RegisteredEventListener& b)
    {
        // Other data members are purposefully not checked. The DOM specification says that upon adding / removing
        // EventListeners, we should only check the type and the capture flag.
        return *a.listener == *b.listener && a.useCapture == b.useCapture;
    }

} // namespace WebCore

#endif // RegisteredEventListener_h