1 files changed, 103 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/SingleSelectionModel.java b/libjava/classpath/javax/swing/SingleSelectionModel.java
new file mode 100644
index 000000000..2a76ff389
--- /dev/null
+++ b/libjava/classpath/javax/swing/SingleSelectionModel.java
@@ -0,0 +1,103 @@
+/* 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);
+
+}