mirror of git://gcc.gnu.org/git/gcc.git
550 lines
12 KiB
Java
550 lines
12 KiB
Java
/* JSpinner.java --
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Copyright (C) 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.Component;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.LayoutManager;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import java.text.DecimalFormat;
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import java.text.ParseException;
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import javax.swing.border.EtchedBorder;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import javax.swing.event.EventListenerList;
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import javax.swing.plaf.SpinnerUI;
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/**
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* A JSpinner is a component which typically contains a numeric value and a
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* way to manipulate the value.
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*
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* @author Ka-Hing Cheung
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* @version 1.0
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*/
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public class JSpinner extends JComponent
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{
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/**
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* DOCUMENT ME!
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*/
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public static class StubEditor extends JLabel implements ChangeListener
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{
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/** DOCUMENT ME! */
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private JLabel label;
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/** DOCUMENT ME! */
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private JButton up;
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/** DOCUMENT ME! */
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private JButton down;
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/** DOCUMENT ME! */
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private JSpinner spinner;
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/**
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* Creates a new StubEditor object.
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*
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* @param spinner DOCUMENT ME!
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*/
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public StubEditor(JSpinner spinner)
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{
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this.spinner = spinner;
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setBorder(new EtchedBorder());
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setHorizontalAlignment(SwingConstants.TRAILING);
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stateChanged(null); /* fill in the label */
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}
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/**
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* DOCUMENT ME!
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*
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* @param evt DOCUMENT ME!
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*/
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public void stateChanged(ChangeEvent evt)
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{
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setText(String.valueOf(spinner.getValue()));
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}
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}
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/**
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* DOCUMENT ME!
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*/
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public static class DefaultEditor extends JPanel implements ChangeListener,
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PropertyChangeListener,
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LayoutManager
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{
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private JSpinner spinner;
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/**
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* For compatability with Sun's JDK 1.4.2 rev. 5
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*/
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private static final long serialVersionUID = -5317788736173368172L;
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/**
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* Creates a new <code>DefaultEditor</code> object.
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*
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* @param spinner the <code>JSpinner</code> associated with this editor
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*/
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public DefaultEditor(JSpinner spinner)
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{
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this.spinner = spinner;
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spinner.addChangeListener(this);
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}
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/**
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* Returns the <code>JSpinner</code> object for this editor.
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*/
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public JSpinner getSpinner()
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{
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return spinner;
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}
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/**
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* DOCUMENT ME!
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*/
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public void commitEdit()
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throws ParseException
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{
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} /* TODO */
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/**
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* DOCUMENT ME!
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*
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* @param spinner DOCUMENT ME!
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*/
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public void dismiss(JSpinner spinner)
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{
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spinner.removeChangeListener(this);
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}
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/**
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* DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public JFormattedTextField getTextField()
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{
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return null;
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} /* TODO */
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/**
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* DOCUMENT ME!
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*
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* @param parent DOCUMENT ME!
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*/
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public void layoutContainer(Container parent)
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{
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} /* TODO */
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/**
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* DOCUMENT ME!
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*
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* @param parent DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public Dimension minimumLayoutSize(Container parent)
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{
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return null;
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} /* TODO */
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/**
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* DOCUMENT ME!
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*
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* @param parent DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public Dimension preferredLayoutSize(Container parent)
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{
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return null;
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} /* TODO */
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/**
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* DOCUMENT ME!
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*
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* @param event DOCUMENT ME!
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*/
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public void propertyChange(PropertyChangeEvent event)
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{
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} /* TODO */
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/**
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* DOCUMENT ME!
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*
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* @param event DOCUMENT ME!
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*/
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public void stateChanged(ChangeEvent event)
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{
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} /* TODO */
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/* no-ops */
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public void removeLayoutComponent(Component child)
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{
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}
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/**
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* DOCUMENT ME!
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*
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* @param name DOCUMENT ME!
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* @param child DOCUMENT ME!
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*/
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public void addLayoutComponent(String name, Component child)
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{
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}
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}
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/**
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* DOCUMENT ME!
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*/
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public static class NumberEditor extends DefaultEditor
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{
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/**
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* For compatability with Sun's JDK
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*/
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private static final long serialVersionUID = 3791956183098282942L;
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/**
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* Creates a new NumberEditor object.
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*
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* @param spinner DOCUMENT ME!
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*/
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public NumberEditor(JSpinner spinner)
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{
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super(spinner);
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}
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/**
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* Creates a new NumberEditor object.
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*
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* @param spinner DOCUMENT ME!
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*/
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public NumberEditor(JSpinner spinner, String decimalFormatPattern)
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{
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super(spinner);
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}
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/**
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* DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public DecimalFormat getFormat()
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{
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return null;
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}
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public SpinnerNumberModel getModel()
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{
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return (SpinnerNumberModel) getSpinner().getModel();
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}
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}
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/** DOCUMENT ME! */
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private SpinnerModel model;
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/** DOCUMENT ME! */
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private JComponent editor;
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/** DOCUMENT ME! */
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private EventListenerList listenerList = new EventListenerList();
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/** DOCUMENT ME! */
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private ChangeListener listener = new ChangeListener()
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{
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public void stateChanged(ChangeEvent evt)
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{
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fireStateChanged();
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}
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};
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/**
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* Creates a JSpinner with <code>SpinnerNumberModel</code>
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*
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* @see javax.swing.SpinnerNumberModel
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*/
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public JSpinner()
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{
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this(new SpinnerNumberModel());
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}
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/**
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* Creates a JSpinner with the specific model and sets the default editor
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*
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* @param model DOCUMENT ME!
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*/
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public JSpinner(SpinnerModel model)
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{
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this.model = model;
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model.addChangeListener(listener);
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setEditor(createEditor(model));
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updateUI();
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}
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/**
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* If the editor is <code>JSpinner.DefaultEditor</code>, then forwards the
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* call to it, otherwise do nothing.
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*
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* @throws ParseException DOCUMENT ME!
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*/
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public void commitEdit() throws ParseException
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{
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if (editor instanceof DefaultEditor)
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((DefaultEditor) editor).commitEdit();
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}
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/**
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* Gets the current editor
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*
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* @return the current editor
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*
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* @see #setEditor
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*/
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public JComponent getEditor()
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{
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return editor;
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}
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/**
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* Changes the current editor to the new editor. This methods should remove
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* the old listeners (if any) and adds the new listeners (if any).
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*
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* @param editor the new editor
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*
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* @throws IllegalArgumentException DOCUMENT ME!
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*
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* @see #getEditor
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*/
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public void setEditor(JComponent editor)
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{
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if (editor == null)
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throw new IllegalArgumentException("editor may not be null");
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if (this.editor instanceof DefaultEditor)
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((DefaultEditor) editor).dismiss(this);
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else if (this.editor instanceof ChangeListener)
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removeChangeListener((ChangeListener) this.editor);
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if (editor instanceof ChangeListener)
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addChangeListener((ChangeListener) editor);
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this.editor = editor;
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}
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/**
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* Gets the underly model.
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*
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* @return the underly model
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*/
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public SpinnerModel getModel()
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{
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return model;
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}
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/**
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* Sets a new underlying model.
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*
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* @param newModel the new model to set
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*
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* @exception IllegalArgumentException if newModel is <code>null</code>
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*/
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public void setModel(SpinnerModel newModel)
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{
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if (newModel == null)
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throw new IllegalArgumentException();
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if (model == newModel)
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return;
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SpinnerModel oldModel = model;
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model = newModel;
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firePropertyChange("model", oldModel, newModel);
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if (editor == null)
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setEditor(createEditor(model));
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}
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/**
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* Gets the next value without changing the current value.
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*
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* @return the next value
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*
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* @see javax.swing.SpinnerModel#getNextValue
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*/
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public Object getNextValue()
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{
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return model.getNextValue();
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}
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/**
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* Gets the previous value without changing the current value.
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*
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* @return the previous value
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*
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* @see javax.swing.SpinnerModel#getPreviousValue
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*/
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public Object getPreviousValue()
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{
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return model.getPreviousValue();
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}
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/**
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* Gets the <code>SpinnerUI</code> that handles this spinner
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*
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* @return the <code>SpinnerUI</code>
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*/
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public SpinnerUI getUI()
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{
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return (SpinnerUI) ui;
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}
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/**
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* Gets the current value of the spinner, according to the underly model,
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* not the UI.
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*
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* @return the current value
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*
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* @see javax.swing.SpinnerModel#getValue
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*/
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public Object getValue()
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{
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return model.getValue();
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}
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/**
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* DOCUMENT ME!
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*
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* @param value DOCUMENT ME!
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*/
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public void setValue(Object value)
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{
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model.setValue(value);
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}
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/**
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* This method returns a name to identify which look and feel class will be
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* the UI delegate for this spinner.
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*
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* @return The UIClass identifier. "SpinnerUI"
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*/
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public String getUIClassID()
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{
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return "SpinnerUI";
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}
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/**
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* This method resets the spinner's UI delegate to the default UI for the
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* current look and feel.
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*/
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public void updateUI()
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{
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setUI((SpinnerUI) UIManager.getUI(this));
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}
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/**
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* This method sets the spinner's UI delegate.
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*
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* @param ui The spinner's UI delegate.
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*/
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public void setUI(SpinnerUI ui)
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{
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super.setUI(ui);
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}
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/**
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* Adds a <code>ChangeListener</code>
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*
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* @param listener the listener to add
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*/
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public void addChangeListener(ChangeListener listener)
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{
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listenerList.add(ChangeListener.class, listener);
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}
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/**
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* Remove a particular listener
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*
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* @param listener the listener to remove
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*/
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public void removeChangeListener(ChangeListener listener)
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{
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listenerList.remove(ChangeListener.class, listener);
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}
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/**
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* Gets all the <code>ChangeListener</code>s
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*
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* @return all the <code>ChangeListener</code>s
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*/
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public ChangeListener[] getChangeListeners()
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{
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return (ChangeListener[]) listenerList.getListeners(ChangeListener.class);
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}
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/**
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* Fires a <code>ChangeEvent</code> to all the <code>ChangeListener</code>s
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* added to this <code>JSpinner</code>
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*/
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protected void fireStateChanged()
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{
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ChangeEvent evt = new ChangeEvent(this);
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ChangeListener[] listeners = getChangeListeners();
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for (int i = 0; i < listeners.length; ++i)
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listeners[i].stateChanged(evt);
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}
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/**
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* Creates an editor for this <code>JSpinner</code>. Really, it should be a
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* <code>JSpinner.DefaultEditor</code>, but since that should be
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* implemented by a JFormattedTextField, and one is not written, I am just
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* using a dummy one backed by a JLabel.
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*
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* @param model DOCUMENT ME!
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*
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* @return the default editor
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*/
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protected JComponent createEditor(SpinnerModel model)
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{
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return new StubEditor(this);
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} /* TODO */}
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