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jeremybenn |
/* SharedUIDefaults.java -- Manages shared instances for UIDefaults
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Copyright (C) 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.plaf.basic;
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import java.awt.Color;
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import java.util.HashMap;
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import javax.swing.UIManager;
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/**
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* Manages shared instances for UI defaults. For example, all Swing components
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* of one type usually share one InputMap/ActionMap pair. In order to avoid
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* duplication of such objects we store them in a Map here.
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*
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* @author Roman Kennke (kennke@aicas.com)
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*/
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public class SharedUIDefaults
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{
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/**
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* Stores the shared instances, indexed by their UI names
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* (i.e. "TextField.InputMap").
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*/
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private static HashMap sharedDefaults = new HashMap();
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/**
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* Returns a shared UI defaults object.
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*
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* @param key the key for the shared object
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*
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* @return a shared UI defaults object for the specified key
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*/
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static Object get(String key)
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{
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Object o = sharedDefaults.get(key);
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if (o == null)
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{
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o = UIManager.get(key);
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sharedDefaults.put(key, o);
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}
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return o;
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}
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/**
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* Returns a shared UI color.
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*
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* @param key the key
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*
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* @return the shared color instance
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*/
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static Color getColor(String 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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