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-/* SingleSelectionModel.java --
- Copyright (C) 2002, 2004 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package javax.swing;
-
-import javax.swing.event.ChangeEvent;
-import javax.swing.event.ChangeListener;
-
-/**
- * A data model that is used in components that support at most one
- * selected element, like {@link JTabbedPane}, {@link JMenu} and
- * {@link JPopupMenu}.
- *
- * @author Andrew Selkirk
- */
-public interface SingleSelectionModel
-{
- /**
- * Returns the selected index or <code>-1</code> if there is no selection.
- *
- * @return The selected index.
- *
- * @see #setSelectedIndex(int)
- */
- int getSelectedIndex();
-
- /**
- * Sets the selected index and, if this is different to the previous
- * selection, sends a {@link ChangeEvent} to all registered listeners.
- *
- * @param index the index (use <code>-1</code> to represent no selection).
- *
- * @see #getSelectedIndex()
- * @see #clearSelection
- */
- void setSelectedIndex(int index);
-
- /**
- * Clears the selection by setting the selected index to <code>-1</code> and
- * sends a {@link ChangeEvent} to all registered listeners. If the selected
- * index is already <code>-1</code>, this method does nothing.
- */
- void clearSelection();
-
- /**
- * Returns <code>true</code> if there is a selection, and <code>false</code>
- * otherwise.
- *
- * @return A boolean.
- */
- boolean isSelected();
-
- /**
- * Registers a listener to receive {@link ChangeEvent} notifications from
- * this model whenever the selected index changes.
- *
- * @param listener the listener to add.
- */
- void addChangeListener(ChangeListener listener);
-
- /**
- * Deregisters a listener so that it no longer receives {@link ChangeEvent}
- * notifications from this model.
- *
- * @param listener the listener to remove.
- */
- void removeChangeListener(ChangeListener listener);
-
-}