plaf/motif/MotifLabelUI.java

/*
 * Copyright (c) 1997, 1998, 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
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package com.sun.java.swing.plaf.motif;

import sun.awt.AppContext;

import javax.swing.*;
import javax.swing.plaf.basic.BasicLabelUI;
import javax.swing.plaf.ComponentUI;

/**
 * A Motif L&F implementation of LabelUI.
 * This merely sets up new default values in MotifLookAndFeel.
 * <p>
 * <strong>Warning:</strong>
 * Serialized objects of this class will not be compatible with
 * future Swing releases.  The current serialization support is appropriate
 * for short term storage or RMI between applications running the same
 * version of Swing.  A future release of Swing will provide support for
 * long term persistence.
 *
 * @author Amy Fowler
 */
public class MotifLabelUI extends BasicLabelUI
{
    private static final Object MOTIF_LABEL_UI_KEY = new Object();

    public static ComponentUI createUI(JComponent c) {
        AppContext appContext = AppContext.getAppContext();
        MotifLabelUI motifLabelUI =
                (MotifLabelUI) appContext.get(MOTIF_LABEL_UI_KEY);
        if (motifLabelUI == null) {
            motifLabelUI = new MotifLabelUI();
            appContext.put(MOTIF_LABEL_UI_KEY, motifLabelUI);
        }
        return motifLabelUI;
    }
}