517 lines
13 KiB
Java
517 lines
13 KiB
Java
/* UIDefaults.java -- database for all settings and interface bindings.
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Copyright (C) 2002, 2004 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., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 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.lang.reflect.Method;
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import java.util.Hashtable;
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import java.util.LinkedList;
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import java.util.ListIterator;
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import java.util.Locale;
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import java.util.MissingResourceException;
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import java.util.ResourceBundle;
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import javax.swing.border.Border;
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import javax.swing.plaf.ComponentUI;
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/**
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* UIDefaults is a database where all settings and interface bindings are
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* stored into. An PLAF implementation fills one of these (see for example
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* plaf/basic/BasicLookAndFeel.java) with "ButtonUI" -> new BasicButtonUI().
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*
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* @author Ronald Veldema (rveldema@cs.vu.nl)
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*/
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public class UIDefaults extends Hashtable
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{
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private LinkedList bundles;
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private Locale defaultLocale;
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private PropertyChangeSupport propertyChangeSupport;
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public interface ActiveValue
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{
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Object createValue(UIDefaults table);
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}
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public static class LazyInputMap implements LazyValue
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{
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Object[] bind;
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public LazyInputMap(Object[] bindings)
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{
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bind = bindings;
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}
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public Object createValue(UIDefaults table)
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{
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InputMap im = new InputMap ();
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for (int i = 0; 2*i+1 < bind.length; ++i)
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{
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im.put (KeyStroke.getKeyStroke ((String) bind[2*i]),
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bind[2*i+1]);
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}
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return im;
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}
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}
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public interface LazyValue
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{
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Object createValue(UIDefaults table);
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}
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public static class ProxyLazyValue implements LazyValue
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{
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LazyValue inner;
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public ProxyLazyValue(String s)
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{
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final String className = s;
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inner = new LazyValue ()
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{
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public Object createValue (UIDefaults table)
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{
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try
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{
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return Class
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.forName (className)
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.getConstructor (new Class[] {})
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.newInstance (new Object[] {});
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}
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catch (Exception e)
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{
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return null;
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}
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}
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};
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}
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public ProxyLazyValue(String c, String m)
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{
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final String className = c;
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final String methodName = m;
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inner = new LazyValue ()
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{
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public Object createValue (UIDefaults table)
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{
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try
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{
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return Class
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.forName (className)
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.getMethod (methodName, new Class[] {})
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.invoke (null, new Object[] {});
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}
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catch (Exception e)
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{
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return null;
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}
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}
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};
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}
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public ProxyLazyValue (String c, Object[] os)
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{
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final String className = c;
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final Object[] objs = os;
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final Class[] clss = new Class[objs.length];
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for (int i = 0; i < objs.length; ++i)
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{
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clss[i] = objs[i].getClass ();
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}
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inner = new LazyValue ()
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{
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public Object createValue (UIDefaults table)
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{
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try
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{
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return Class
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.forName (className)
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.getConstructor (clss)
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.newInstance (objs);
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}
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catch (Exception e)
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{
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return null;
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}
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}
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};
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}
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public ProxyLazyValue (String c, String m, Object[] os)
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{
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final String className = c;
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final String methodName = m;
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final Object[] objs = os;
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final Class[] clss = new Class[objs.length];
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for (int i = 0; i < objs.length; ++i)
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{
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clss[i] = objs[i].getClass ();
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}
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inner = new LazyValue ()
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{
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public Object createValue(UIDefaults table)
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{
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try
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{
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return Class
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.forName (className)
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.getMethod (methodName, clss)
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.invoke (null, objs);
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}
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catch (Exception e)
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{
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return null;
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}
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}
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};
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}
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public Object createValue (UIDefaults table)
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{
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return inner.createValue (table);
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}
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}
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private static final long serialVersionUID = 7341222528856548117L;
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public UIDefaults()
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{
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bundles = new LinkedList ();
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defaultLocale = Locale.getDefault ();
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propertyChangeSupport = new PropertyChangeSupport(this);
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}
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public UIDefaults(Object[] entries)
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{
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this();
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for (int i = 0; (2*i+1) < entries.length; ++i)
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put (entries[2*i], entries[2*i+1]);
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}
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public Object get(Object key)
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{
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return this.get (key, getDefaultLocale ());
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}
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public Object get (Object key, Locale loc)
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{
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Object obj = null;
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if (super.containsKey (key))
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{
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obj = super.get (key);
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}
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else if (key instanceof String)
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{
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String keyString = (String) key;
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ListIterator i = bundles.listIterator (0);
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while (i.hasNext ())
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{
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String bundle_name = (String) i.next ();
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ResourceBundle res =
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ResourceBundle.getBundle (bundle_name, loc);
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if (res != null)
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{
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try
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{
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obj = res.getObject (keyString);
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break;
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}
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catch (MissingResourceException me)
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{
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// continue, this bundle has no such key
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}
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}
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}
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}
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// now we've found the object, resolve it.
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// nb: LazyValues aren't supported in resource bundles, so it's correct
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// to insert their results in the locale-less hashtable.
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if (obj == null)
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return null;
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if (obj instanceof LazyValue)
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{
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Object resolved = ((LazyValue)obj).createValue (this);
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super.remove (key);
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super.put (key, resolved);
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return resolved;
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}
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else if (obj instanceof ActiveValue)
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{
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return ((ActiveValue)obj).createValue (this);
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}
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return obj;
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}
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public Object put(Object key, Object value)
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{
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Object old = super.put (key, value);
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if (key instanceof String && old != value)
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firePropertyChange ((String) key, old, value);
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return old;
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}
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public void putDefaults(Object[] entries)
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{
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for (int i = 0; (2*i+1) < entries.length; ++i)
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{
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super.put (entries[2*i], entries[2*i+1]);
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}
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firePropertyChange ("UIDefaults", null, null);
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}
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public Font getFont(Object key)
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{
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Object o = get(key);
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return o instanceof Font ? (Font) o : null;
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}
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public Font getFont(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof Font ? (Font) o : null;
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}
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public Color getColor(Object key)
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{
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Object o = get(key);
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return o instanceof Color ? (Color) o : null;
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}
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public Color getColor(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof Color ? (Color) o : null;
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}
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public Icon getIcon(Object key)
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{
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Object o = get(key);
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return o instanceof Icon ? (Icon) o : null;
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}
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public Icon getIcon(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof Icon ? (Icon) o : null;
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}
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public Border getBorder(Object key)
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{
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Object o = get(key);
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return o instanceof Border ? (Border) o : null;
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}
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public Border getBorder(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof Border ? (Border) o : null;
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}
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public String getString(Object key)
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{
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Object o = get(key);
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return o instanceof String ? (String) o : null;
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}
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public String getString(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof String ? (String) o : null;
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}
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public int getInt(Object key)
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{
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Object o = get(key);
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return o instanceof Integer ? ((Integer) o).intValue() : 0;
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}
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public int getInt(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof Integer ? ((Integer) o).intValue() : 0;
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}
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public boolean getBoolean(Object key)
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{
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return Boolean.TRUE.equals(get(key));
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}
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public boolean getBoolean(Object key, Locale l)
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{
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return Boolean.TRUE.equals(get(key, l));
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}
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public Insets getInsets(Object key)
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{
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Object o = get(key);
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return o instanceof Insets ? (Insets) o : null;
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}
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public Insets getInsets(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof Insets ? (Insets) o : null;
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}
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public Dimension getDimension(Object key)
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{
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Object o = get(key);
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return o instanceof Dimension ? (Dimension) o : null;
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}
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public Dimension getDimension(Object key, Locale l)
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{
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Object o = get(key, l);
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return o instanceof Dimension ? (Dimension) o : null;
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}
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public Class getUIClass(String id, ClassLoader loader)
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{
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String className = (String) get (id);
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if (className == null)
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return null;
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try
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{
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if (loader != null)
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return loader.loadClass (className);
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return Class.forName (className);
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}
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catch (Exception e)
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{
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return null;
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}
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}
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public Class getUIClass(String id)
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{
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return getUIClass (id, null);
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}
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protected void getUIError(String msg)
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{
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System.err.println ("UIDefaults.getUIError: " + msg);
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}
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public ComponentUI getUI(JComponent target)
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{
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String classId = target.getUIClassID ();
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Class cls = getUIClass (classId);
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if (cls == null)
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{
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getUIError ("failed to locate UI class:" + classId);
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return null;
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}
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Method factory;
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try
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{
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factory = cls.getMethod ("createUI", new Class[] { JComponent.class } );
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}
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catch (NoSuchMethodException nme)
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{
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getUIError ("failed to locate createUI method on " + cls.toString ());
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return null;
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}
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try
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{
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return (ComponentUI) factory.invoke (null, new Object[] { target });
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}
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catch (java.lang.reflect.InvocationTargetException ite)
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{
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getUIError ("InvocationTargetException ("+ ite.getTargetException()
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+") calling createUI(...) on " + cls.toString ());
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return null;
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}
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catch (Exception e)
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{
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getUIError ("exception calling createUI(...) on " + cls.toString ());
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return null;
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}
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}
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public void addPropertyChangeListener(PropertyChangeListener listener)
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{
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propertyChangeSupport.addPropertyChangeListener(listener);
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}
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public void removePropertyChangeListener(PropertyChangeListener listener)
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{
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propertyChangeSupport.removePropertyChangeListener(listener);
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}
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public PropertyChangeListener[] getPropertyChangeListeners()
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{
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return propertyChangeSupport.getPropertyChangeListeners();
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}
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protected void firePropertyChange(String property,
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Object oldValue, Object newValue)
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{
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propertyChangeSupport.firePropertyChange(property, oldValue, newValue);
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}
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public void addResourceBundle(String name)
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{
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bundles.addFirst (name);
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}
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public void removeResourceBundle(String name)
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{
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bundles.remove (name);
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}
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public void setDefaultLocale(Locale loc)
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{
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defaultLocale = loc;
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}
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public Locale getDefaultLocale()
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{
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return defaultLocale;
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}
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}
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