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This is a backport of OpenJFX 8 to run on Java 7.
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/*
 * Copyright (c) 2011, 2013, 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
 * questions.
 */

package com.sun.glass.ui.lens;

import com.sun.glass.ui.Timer;

/**
 * Lens implementation class for Timer.
 */
final class LensTimer extends Timer {
    static java.util.Timer timer;
    private java.util.TimerTask task;

    protected LensTimer(final Runnable runnable) {
        super(runnable);
    }

    static int getMinPeriod_impl() {
        return 0;
    }

    static int getMaxPeriod_impl() {
        return 1000000;
    }

    @Override protected long _start(final Runnable runnable, int period) {
        if (timer == null) {
            timer = new java.util.Timer(true);
        }

        task = new java.util.TimerTask() {

            @Override
            public void run() {
                runnable.run();
            }
        };

        timer.schedule(task, 0, (long)period);
        return 1; // need something non-zero to denote success.
    }

    @Override protected long _start(Runnable runnable) {
        throw new RuntimeException("vsync timer not supported");
    }

    @Override protected void _stop(long timer) {
        if (task != null) {
            task.cancel();
            task = null;
        }
    }
}