697 lines
18 KiB
Java
697 lines
18 KiB
Java
/* UIManager.java --
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Copyright (C) 2002, 2003, 2004, 2005, 2006, Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.Insets;
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import java.beans.PropertyChangeListener;
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import java.beans.PropertyChangeSupport;
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import java.io.Serializable;
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import java.util.Locale;
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import javax.swing.border.Border;
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import javax.swing.plaf.ComponentUI;
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import javax.swing.plaf.metal.MetalLookAndFeel;
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/**
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* Manages the current {@link LookAndFeel} and any auxiliary {@link LookAndFeel}
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* instances.
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*/
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public class UIManager implements Serializable
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{
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/**
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* Represents the basic information about a {@link LookAndFeel} (LAF), so
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* that a list of installed LAFs can be presented without actually loading
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* the LAF class(es).
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*/
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public static class LookAndFeelInfo
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{
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String name, clazz;
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/**
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* Creates a new instance.
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*
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* @param name the look and feel name.
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* @param clazz the look and feel class name.
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*/
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public LookAndFeelInfo(String name,
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String clazz)
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{
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this.name = name;
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this.clazz = clazz;
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}
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/**
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* Returns the name of the look and feel.
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*
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* @return The name of the look and feel.
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*/
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public String getName()
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{
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return name;
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}
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/**
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* Returns the fully qualified class name for the {@link LookAndFeel}.
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*
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* @return The fully qualified class name for the {@link LookAndFeel}.
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*/
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public String getClassName()
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{
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return clazz;
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}
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/**
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* Returns a String representation of the LookAndFeelInfo object.
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*
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* @return a String representation of the LookAndFeelInfo object
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*/
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public String toString()
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{
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StringBuffer s = new StringBuffer();
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s.append(getClass().getName());
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s.append('[');
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s.append(getName());
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s.append(' ');
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s.append(getClassName());
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s.append(']');
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return s.toString();
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}
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}
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private static final long serialVersionUID = -5547433830339189365L;
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/** The installed look and feel(s). */
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static LookAndFeelInfo [] installed = {
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new LookAndFeelInfo("Metal", "javax.swing.plaf.metal.MetalLookAndFeel"),
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new LookAndFeelInfo("GNU", "gnu.javax.swing.plaf.gnu.GNULookAndFeel")
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};
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/** The installed auxiliary look and feels. */
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static LookAndFeel[] auxLookAndFeels;
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/** The current look and feel. */
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static LookAndFeel currentLookAndFeel;
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static UIDefaults currentUIDefaults;
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/**
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* UIDefaults set by the user.
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*/
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static UIDefaults userUIDefaults;
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/** Property change listener mechanism. */
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static PropertyChangeSupport listeners
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= new PropertyChangeSupport(UIManager.class);
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static
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{
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String defaultlaf = System.getProperty("swing.defaultlaf");
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try
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{
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if (defaultlaf != null)
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{
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Class lafClass = Class.forName(defaultlaf);
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LookAndFeel laf = (LookAndFeel) lafClass.newInstance();
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setLookAndFeel(laf);
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}
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else
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{
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setLookAndFeel(new MetalLookAndFeel());
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}
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}
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catch (Exception ex)
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{
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System.err.println("cannot initialize Look and Feel: " + defaultlaf);
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System.err.println("error: " + ex.toString());
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System.err.println("falling back to Metal Look and Feel");
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try
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{
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setLookAndFeel(new MetalLookAndFeel());
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}
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catch (Exception ex2)
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{
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throw (Error) new AssertionError("There must be no problem installing"
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+ " the MetalLookAndFeel.")
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.initCause(ex2);
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}
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}
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}
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/**
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* Creates a new instance of the <code>UIManager</code>. There is no need
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* to construct an instance of this class, since all methods are static.
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*/
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public UIManager()
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{
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// Do nothing here.
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}
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/**
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* Add a <code>PropertyChangeListener</code> to the listener list.
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*
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* @param listener the listener to add
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*/
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public static void addPropertyChangeListener(PropertyChangeListener listener)
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{
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listeners.addPropertyChangeListener(listener);
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}
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/**
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* Remove a <code>PropertyChangeListener</code> from the listener list.
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*
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* @param listener the listener to remove
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*/
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public static void removePropertyChangeListener(PropertyChangeListener
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listener)
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{
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listeners.removePropertyChangeListener(listener);
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}
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/**
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* Returns an array of all added <code>PropertyChangeListener</code> objects.
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*
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* @return an array of listeners
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*
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* @since 1.4
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*/
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public static PropertyChangeListener[] getPropertyChangeListeners()
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{
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return listeners.getPropertyChangeListeners();
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}
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/**
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* Add a {@link LookAndFeel} to the list of auxiliary look and feels.
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*
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* @param laf the auxiliary look and feel (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>laf</code> is <code>null</code>.
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*
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* @see #getAuxiliaryLookAndFeels()
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*/
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public static void addAuxiliaryLookAndFeel(LookAndFeel laf)
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{
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if (laf == null)
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throw new NullPointerException("Null 'laf' argument.");
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if (auxLookAndFeels == null)
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{
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auxLookAndFeels = new LookAndFeel[1];
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auxLookAndFeels[0] = laf;
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return;
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}
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LookAndFeel[] temp = new LookAndFeel[auxLookAndFeels.length + 1];
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System.arraycopy(auxLookAndFeels, 0, temp, 0, auxLookAndFeels.length);
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auxLookAndFeels = temp;
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auxLookAndFeels[auxLookAndFeels.length - 1] = laf;
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}
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/**
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* Removes a {@link LookAndFeel} (LAF) from the list of auxiliary LAFs.
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*
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* @param laf the LAF to remove.
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*
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* @return <code>true</code> if the LAF was removed, and <code>false</code>
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* otherwise.
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*/
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public static boolean removeAuxiliaryLookAndFeel(LookAndFeel laf)
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{
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if (auxLookAndFeels == null)
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return false;
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int count = auxLookAndFeels.length;
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if (count == 1 && auxLookAndFeels[0] == laf)
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{
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auxLookAndFeels = null;
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return true;
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}
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for (int i = 0; i < count; i++)
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{
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if (auxLookAndFeels[i] == laf)
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{
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LookAndFeel[] temp = new LookAndFeel[auxLookAndFeels.length - 1];
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if (i == 0)
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{
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System.arraycopy(auxLookAndFeels, 1, temp, 0, count - 1);
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}
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else if (i == count - 1)
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{
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System.arraycopy(auxLookAndFeels, 0, temp, 0, count - 1);
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}
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else
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{
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System.arraycopy(auxLookAndFeels, 0, temp, 0, i);
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System.arraycopy(auxLookAndFeels, i + 1, temp, i,
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count - i - 1);
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}
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auxLookAndFeels = temp;
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return true;
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}
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}
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return false;
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}
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/**
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* Returns an array (possibly <code>null</code>) containing the auxiliary
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* {@link LookAndFeel}s that are in use. These are used by the
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* {@link javax.swing.plaf.multi.MultiLookAndFeel} class.
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*
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* @return The auxiliary look and feels (possibly <code>null</code>).
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*
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* @see #addAuxiliaryLookAndFeel(LookAndFeel)
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*/
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public static LookAndFeel[] getAuxiliaryLookAndFeels()
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{
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return auxLookAndFeels;
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}
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/**
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* Returns an object from the {@link UIDefaults} table for the current
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* {@link LookAndFeel}.
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*
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* @param key the key.
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*
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* @return The object.
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*/
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public static Object get(Object key)
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{
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Object val = null;
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if (userUIDefaults != null)
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val = userUIDefaults.get(key);
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if (val == null)
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val = getLookAndFeelDefaults().get(key);
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return val;
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}
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/**
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* Returns an object from the {@link UIDefaults} table for the current
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* {@link LookAndFeel}.
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*
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* @param key the key.
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*
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* @return The object.
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*/
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public static Object get(Object key, Locale locale)
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{
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Object val = null;
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if (userUIDefaults != null)
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val = userUIDefaults.get(key, locale);
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if (val == null)
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val = getLookAndFeelDefaults().get(key, locale);
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return val;
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}
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/**
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* Returns a boolean value from the defaults table,
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* <code>false</code> if key is not present.
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*
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* @since 1.4
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*/
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public static boolean getBoolean(Object key)
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{
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Boolean value = (Boolean) get(key);
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return value != null ? value.booleanValue() : false;
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}
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/**
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* Returns a boolean value from the defaults table,
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* <code>false</code> if key is not present.
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*
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* @since 1.4
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*/
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public static boolean getBoolean(Object key, Locale locale)
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{
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Boolean value = (Boolean) get(key, locale);
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return value != null ? value.booleanValue() : false;
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}
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/**
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* Returns a border from the defaults table.
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*/
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public static Border getBorder(Object key)
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{
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return (Border) get(key);
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}
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/**
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* Returns a border from the defaults table.
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*
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* @since 1.4
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*/
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public static Border getBorder(Object key, Locale locale)
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{
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return (Border) get(key, locale);
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}
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/**
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* Returns a drawing color from the defaults table.
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*/
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public static Color getColor(Object key)
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{
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return (Color) get(key);
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}
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/**
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* Returns a drawing color from the defaults table.
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*/
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public static Color getColor(Object key, Locale locale)
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{
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return (Color) get(key);
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}
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/**
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* The fully qualified class name of the cross platform (Metal) look and feel.
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* This string can be passed to Class.forName()
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*
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* @return <code>"javax.swing.plaf.metal.MetalLookAndFeel"</code>
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*/
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public static String getCrossPlatformLookAndFeelClassName()
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{
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return "javax.swing.plaf.metal.MetalLookAndFeel";
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}
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/**
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* Returns the default values for this look and feel.
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*
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* @return The {@link UIDefaults} for the current {@link LookAndFeel}.
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*/
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public static UIDefaults getDefaults()
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{
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return currentUIDefaults;
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}
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/**
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* Returns a dimension from the defaults table.
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*/
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public static Dimension getDimension(Object key)
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{
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return (Dimension) get(key);
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}
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/**
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* Returns a dimension from the defaults table.
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*/
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public static Dimension getDimension(Object key, Locale locale)
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{
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return (Dimension) get(key, locale);
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}
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/**
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* Retrieves a font from the defaults table of the current
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* LookAndFeel.
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*
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* @param key an Object that specifies the font. Typically,
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* this is a String such as
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* <code>TitledBorder.font</code>.
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*/
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public static Font getFont(Object key)
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{
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return (Font) get(key);
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}
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/**
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* Retrieves a font from the defaults table of the current
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* LookAndFeel.
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*
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* @param key an Object that specifies the font. Typically,
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* this is a String such as
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* <code>TitledBorder.font</code>.
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*/
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public static Font getFont(Object key, Locale locale)
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{
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return (Font) get(key, locale);
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}
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/**
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* Returns an Icon from the defaults table.
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*/
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public static Icon getIcon(Object key)
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{
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return (Icon) get(key);
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}
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/**
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* Returns an Icon from the defaults table.
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*/
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public static Icon getIcon(Object key, Locale locale)
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{
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return (Icon) get(key, locale);
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}
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/**
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* Returns an Insets object from the defaults table.
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*/
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public static Insets getInsets(Object key)
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{
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Object o = get(key);
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if (o instanceof Insets)
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return (Insets) o;
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else
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return null;
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}
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/**
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* Returns an Insets object from the defaults table.
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*/
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public static Insets getInsets(Object key, Locale locale)
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{
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Object o = get(key, locale);
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if (o instanceof Insets)
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return (Insets) o;
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else
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return null;
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}
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/**
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* Returns an array containing information about the {@link LookAndFeel}s
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* that are installed.
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*
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* @return A list of the look and feels that are available (installed).
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*/
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public static LookAndFeelInfo[] getInstalledLookAndFeels()
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{
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return installed;
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}
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public static int getInt(Object key)
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{
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Integer x = (Integer) get(key);
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if (x == null)
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return 0;
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return x.intValue();
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}
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public static int getInt(Object key, Locale locale)
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{
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Integer x = (Integer) get(key, locale);
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if (x == null)
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return 0;
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return x.intValue();
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}
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/**
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* Returns the current look and feel (which may be <code>null</code>).
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*
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* @return The current look and feel.
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*
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* @see #setLookAndFeel(LookAndFeel)
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*/
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public static LookAndFeel getLookAndFeel()
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{
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return currentLookAndFeel;
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}
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/**
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* Returns the <code>UIDefaults</code> table of the currently active
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* look and feel.
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*
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* @return The {@link UIDefaults} for the current {@link LookAndFeel}.
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*/
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public static UIDefaults getLookAndFeelDefaults()
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{
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return currentUIDefaults;
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}
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/**
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* Returns a string from the defaults table.
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*/
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public static String getString(Object key)
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{
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return (String) get(key);
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}
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/**
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* Returns a string from the defaults table.
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*/
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public static String getString(Object key, Locale locale)
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{
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return (String) get(key, locale);
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}
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/**
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* Returns the name of the {@link LookAndFeel} class that implements the
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* native systems look and feel if there is one, otherwise the name
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* of the default cross platform LookAndFeel class.
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*
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* @return The fully qualified class name for the system look and feel.
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*
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* @see #getCrossPlatformLookAndFeelClassName()
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*/
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public static String getSystemLookAndFeelClassName()
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{
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return getCrossPlatformLookAndFeelClassName();
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}
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/**
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* Returns UI delegate from the current {@link LookAndFeel} that renders the
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* target component.
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*
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* @param target the target component.
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*/
|
|
public static ComponentUI getUI(JComponent target)
|
|
{
|
|
ComponentUI ui = null;
|
|
if (userUIDefaults != null
|
|
&& userUIDefaults.get(target.getUIClassID()) != null)
|
|
ui = userUIDefaults.getUI(target);
|
|
if (ui == null)
|
|
ui = currentUIDefaults.getUI(target);
|
|
return ui;
|
|
}
|
|
|
|
/**
|
|
* Creates a new look and feel and adds it to the current array.
|
|
*
|
|
* @param name the look and feel name.
|
|
* @param className the fully qualified name of the class that implements the
|
|
* look and feel.
|
|
*/
|
|
public static void installLookAndFeel(String name, String className)
|
|
{
|
|
installLookAndFeel(new LookAndFeelInfo(name, className));
|
|
}
|
|
|
|
/**
|
|
* Adds the specified look and feel to the current array and then calls
|
|
* setInstalledLookAndFeels(javax.swing.UIManager.LookAndFeelInfo[]).
|
|
*/
|
|
public static void installLookAndFeel(LookAndFeelInfo info)
|
|
{
|
|
LookAndFeelInfo[] newInstalled = new LookAndFeelInfo[installed.length + 1];
|
|
System.arraycopy(installed, 0, newInstalled, 0, installed.length);
|
|
newInstalled[newInstalled.length - 1] = info;
|
|
setInstalledLookAndFeels(newInstalled);
|
|
}
|
|
|
|
/**
|
|
* Stores an object in the defaults table.
|
|
*/
|
|
public static Object put(Object key, Object value)
|
|
{
|
|
Object old = get(key);
|
|
if (userUIDefaults == null)
|
|
userUIDefaults = new UIDefaults();
|
|
userUIDefaults.put(key, value);
|
|
return old;
|
|
}
|
|
|
|
/**
|
|
* Replaces the current array of installed LookAndFeelInfos.
|
|
*/
|
|
public static void setInstalledLookAndFeels(UIManager.LookAndFeelInfo[] infos)
|
|
{
|
|
installed = infos;
|
|
}
|
|
|
|
/**
|
|
* Sets the current {@link LookAndFeel}.
|
|
*
|
|
* @param newLookAndFeel the new look and feel (<code>null</code> permitted).
|
|
*
|
|
* @throws UnsupportedLookAndFeelException if the look and feel is not
|
|
* supported on the current platform.
|
|
*
|
|
* @see LookAndFeel#isSupportedLookAndFeel()
|
|
*/
|
|
public static void setLookAndFeel(LookAndFeel newLookAndFeel)
|
|
throws UnsupportedLookAndFeelException
|
|
{
|
|
if (newLookAndFeel != null && ! newLookAndFeel.isSupportedLookAndFeel())
|
|
throw new UnsupportedLookAndFeelException(newLookAndFeel.getName());
|
|
LookAndFeel oldLookAndFeel = currentLookAndFeel;
|
|
if (oldLookAndFeel != null)
|
|
oldLookAndFeel.uninitialize();
|
|
|
|
// Set the current default look and feel using a LookAndFeel object.
|
|
currentLookAndFeel = newLookAndFeel;
|
|
if (newLookAndFeel != null)
|
|
{
|
|
newLookAndFeel.initialize();
|
|
currentUIDefaults = newLookAndFeel.getDefaults();
|
|
}
|
|
else
|
|
{
|
|
currentUIDefaults = null;
|
|
}
|
|
listeners.firePropertyChange("lookAndFeel", oldLookAndFeel, newLookAndFeel);
|
|
//revalidate();
|
|
//repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the current default look and feel using a class name.
|
|
*
|
|
* @param className the look and feel class name.
|
|
*
|
|
* @throws UnsupportedLookAndFeelException if the look and feel is not
|
|
* supported on the current platform.
|
|
*
|
|
* @see LookAndFeel#isSupportedLookAndFeel()
|
|
*/
|
|
public static void setLookAndFeel(String className)
|
|
throws ClassNotFoundException, InstantiationException, IllegalAccessException,
|
|
UnsupportedLookAndFeelException
|
|
{
|
|
Class c = Class.forName(className);
|
|
LookAndFeel a = (LookAndFeel) c.newInstance(); // throws class-cast-exception
|
|
setLookAndFeel(a);
|
|
}
|
|
}
|