/*
 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
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 */

package sun.lwawt.macosx;

import sun.awt.datatransfer.ToolkitThreadBlockedHandler;

final class CToolkitThreadBlockedHandler implements ToolkitThreadBlockedHandler {
    private final LWCToolkit toolkit =
            java.awt.Toolkit.getDefaultToolkit() instanceof LWCToolkit
                    ? (LWCToolkit)java.awt.Toolkit.getDefaultToolkit()
                    : null;

    public void lock() {
    }

    public void unlock() {
    }

    protected boolean isOwned() {
       return false;
    }

    public void enter() {
        // Despite the naming of this method, on MacOS only one
        // event is read and dispatched before this method returns.
        // This call is non-blocking and does not wait for an event
        if (toolkit != null) {
            toolkit.startNativeNestedEventLoop();
        }
    }

    public void exit() {
    }
}