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70 lines
2.7 KiB
Java
70 lines
2.7 KiB
Java
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/* ComboBoxModel.java --
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Copyright (C) 2002, 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 javax.swing.event.ListDataEvent;
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import javax.swing.event.ListDataListener;
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/**
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* The data model for a {@link JComboBox}. This model keeps track of elements
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* contained in the <code>JComboBox</code> as well as the current
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* combo box selection. Whenever the selection in the <code>JComboBox</code>
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* changes, the <code>ComboBoxModel</code> should fire a {@link ListDataEvent}
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* to the model's {@link ListDataListener}s.
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*
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* @author Andrew Selkirk
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*/
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public interface ComboBoxModel extends ListModel
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{
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/**
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* Sets the selected item in the combo box. Classes implementing this
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* interface should fire a {@link ListDataEvent} to all registered
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* {@link ListDataListener}s to indicate that the selection has changed.
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*
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* @param item the selected item (<code>null</code> permitted).
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*/
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void setSelectedItem(Object item);
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/**
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* Returns the currently selected item in the combo box.
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*
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* @return The selected item (possibly <code>null</code>).
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*/
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Object getSelectedItem();
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}
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