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diff --git a/libjava/classpath/javax/swing/plaf/multi/MultiTreeUI.java b/libjava/classpath/javax/swing/plaf/multi/MultiTreeUI.java
new file mode 100644
index 000000000..f70decc69
--- /dev/null
+++ b/libjava/classpath/javax/swing/plaf/multi/MultiTreeUI.java
@@ -0,0 +1,628 @@
+/* MultiTreeUI.java --
+   Copyright (C) 2005 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.plaf.multi;
+
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Rectangle;
+import java.util.Iterator;
+import java.util.Vector;
+
+import javax.accessibility.Accessible;
+import javax.swing.JComponent;
+import javax.swing.JTree;
+import javax.swing.LookAndFeel;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.TreeUI;
+import javax.swing.tree.TreePath;
+
+/**
+ * A UI delegate that that coordinates multiple {@link TreeUI}
+ * instances, one from the primary look and feel, and one or more from the
+ * auxiliary look and feel(s).
+ *
+ * @see UIManager#addAuxiliaryLookAndFeel(LookAndFeel)
+ */
+public class MultiTreeUI extends TreeUI
+{
+
+  /** A list of references to the actual component UIs. */
+  protected Vector uis;
+
+  /**
+   * Creates a new <code>MultiTreeUI</code> instance.
+   *
+   * @see #createUI(JComponent)
+   */
+  public MultiTreeUI()
+  {
+    uis = new Vector();
+  }
+
+  /**
+   * Creates a delegate object for the specified component.  If any auxiliary
+   * look and feels support this component, a <code>MultiTreeUI</code> is
+   * returned, otherwise the UI from the default look and feel is returned.
+   *
+   * @param target  the component.
+   *
+   * @see MultiLookAndFeel#createUIs(ComponentUI, Vector, JComponent)
+   */
+  public static ComponentUI createUI(JComponent target)
+  {
+    MultiTreeUI mui = new MultiTreeUI();
+    return MultiLookAndFeel.createUIs(mui, mui.uis, target);
+  }
+
+  /**
+   * Calls the {@link ComponentUI#installUI(JComponent)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>.
+   *
+   * @param c  the component.
+   */
+  public void installUI(JComponent c)
+  {
+    Iterator iterator = uis.iterator();
+    while (iterator.hasNext())
+    {
+      ComponentUI ui = (ComponentUI) iterator.next();
+      ui.installUI(c);
+    }
+  }
+
+  /**
+   * Calls the {@link ComponentUI#uninstallUI(JComponent)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>.
+   *
+   * @param c  the component.
+   */
+  public void uninstallUI(JComponent c)
+  {
+    Iterator iterator = uis.iterator();
+    while (iterator.hasNext())
+    {
+      ComponentUI ui = (ComponentUI) iterator.next();
+      ui.uninstallUI(c);
+    }
+  }
+
+  /**
+   * Returns an array containing the UI delegates managed by this
+   * <code>MultiTreeUI</code>.  The first item in the array is always
+   * the UI delegate from the installed default look and feel.
+   *
+   * @return An array of UI delegates.
+   */
+  public ComponentUI[] getUIs()
+  {
+    return MultiLookAndFeel.uisToArray(uis);
+  }
+
+  /**
+   * Calls the {@link ComponentUI#contains(JComponent, int, int)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the result for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param c  the component.
+   * @param x  the x-coordinate.
+   * @param y  the y-coordinate.
+   *
+   * @return <code>true</code> if the specified (x, y) coordinate falls within
+   *         the bounds of the component as rendered by the UI delegate in the
+   *         primary look and feel, and <code>false</code> otherwise.
+   */
+  public boolean contains(JComponent c, int x, int y)
+  {
+    boolean result = false;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        result = ui.contains(c, x, y);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        /* boolean ignored = */ ui.contains(c, x, y);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link ComponentUI#update(Graphics, JComponent)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>.
+   *
+   * @param g  the graphics device.
+   * @param c  the component.
+   */
+  public void update(Graphics g, JComponent c)
+  {
+    Iterator iterator = uis.iterator();
+    while (iterator.hasNext())
+    {
+      ComponentUI ui = (ComponentUI) iterator.next();
+      ui.update(g, c);
+    }
+  }
+
+  /**
+   * Calls the <code>paint(Graphics, JComponent)</code> method for all the UI
+   * delegates managed by this <code>MultiTreeUI</code>.
+   *
+   * @param g  the graphics device.
+   * @param c  the component.
+   */
+  public void paint(Graphics g, JComponent c)
+  {
+    Iterator iterator = uis.iterator();
+    while (iterator.hasNext())
+    {
+      ComponentUI ui = (ComponentUI) iterator.next();
+      ui.paint(g, c);
+    }
+  }
+
+  /**
+   * Calls the {@link ComponentUI#getPreferredSize(JComponent)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the preferred size for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param c  the component.
+   *
+   * @return The preferred size returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public Dimension getPreferredSize(JComponent c)
+  {
+    Dimension result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        result = ui.getPreferredSize(c);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        /* Dimension ignored = */ ui.getPreferredSize(c);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link ComponentUI#getMinimumSize(JComponent)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the minimum size for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param c  the component.
+   *
+   * @return The minimum size returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public Dimension getMinimumSize(JComponent c)
+  {
+    Dimension result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        result = ui.getMinimumSize(c);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        /* Dimension ignored = */ ui.getMinimumSize(c);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link ComponentUI#getMaximumSize(JComponent)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the maximum size for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param c  the component.
+   *
+   * @return The maximum size returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public Dimension getMaximumSize(JComponent c)
+  {
+    Dimension result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        result = ui.getMaximumSize(c);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        /* Dimension ignored = */ ui.getMaximumSize(c);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link ComponentUI#getAccessibleChildrenCount(JComponent)} method
+   * for all the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the count for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param c  the component.
+   *
+   * @return The count returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public int getAccessibleChildrenCount(JComponent c)
+  {
+    int result = 0;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        result = ui.getAccessibleChildrenCount(c);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        /* int ignored = */ ui.getAccessibleChildrenCount(c);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link ComponentUI#getAccessibleChild(JComponent, int)} method
+   * for all the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the child for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param c  the component
+   * @param i  the child index.
+   *
+   * @return The child returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public Accessible getAccessibleChild(JComponent c, int i)
+  {
+    Accessible result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        result = ui.getAccessibleChild(c, i);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        ComponentUI ui = (ComponentUI) iterator.next();
+        /* Accessible ignored = */ ui.getAccessibleChild(c, i);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#getPathBounds(JTree, TreePath)} method
+   * for all the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the bounds for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The bounds returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public Rectangle getPathBounds(JTree tree, TreePath path)
+  {
+    Rectangle result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.getPathBounds(tree, path);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* Rectangle ignored = */ ui.getPathBounds(tree, path);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#getPathForRow(JTree, int)} method
+   * for all the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the path for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The path returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public TreePath getPathForRow(JTree tree, int row)
+  {
+    TreePath result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.getPathForRow(tree, row);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* TreePath ignored = */ ui.getPathForRow(tree, row);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#getRowForPath(JTree, TreePath)} method
+   * for all the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the row index for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The row index returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public int getRowForPath(JTree tree, TreePath path)
+  {
+    int result = 0;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.getRowForPath(tree, path);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* int ignored = */ ui.getRowForPath(tree, path);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#getRowCount(JTree)} method
+   * for all the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the count for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The count returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public int getRowCount(JTree tree)
+  {
+    int result = 0;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.getRowCount(tree);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* int ignored = */ ui.getRowCount(tree);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#getClosestPathForLocation(JTree, int, int)} method
+   * for all the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the path for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The path returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public TreePath getClosestPathForLocation(JTree tree, int x, int y)
+  {
+    TreePath result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.getClosestPathForLocation(tree, x, y);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* TreePath ignored = */ ui.getClosestPathForLocation(tree, x, y);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#isEditing(JTree)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the result for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The result returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public boolean isEditing(JTree tree)
+  {
+    boolean result = false;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.isEditing(tree);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* boolean ignored = */ ui.isEditing(tree);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#stopEditing(JTree)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the result for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The result returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public boolean stopEditing(JTree tree)
+  {
+    boolean result = false;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.stopEditing(tree);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* boolean ignored = */ ui.stopEditing(tree);
+      }
+    return result;
+  }
+
+  /**
+   * Calls the {@link TreeUI#cancelEditing(JTree)} method for
+   * all the UI delegates managed by this <code>MultiTreeUI</code>.
+   *
+   * @param tree  the tree component.
+   */
+  public void cancelEditing(JTree tree)
+  {
+    Iterator iterator = uis.iterator();
+    while (iterator.hasNext())
+    {
+      TreeUI ui = (TreeUI) iterator.next();
+      ui.cancelEditing(tree);
+    }
+  }
+
+  /**
+   * Calls the {@link TreeUI#startEditingAtPath(JTree, TreePath)} method for
+   * all the UI delegates managed by this <code>MultiTreeUI</code>.
+   *
+   * @param tree  the tree component.
+   * @param path  the path.
+   */
+  public void startEditingAtPath(JTree tree, TreePath path)
+  {
+    Iterator iterator = uis.iterator();
+    while (iterator.hasNext())
+    {
+      TreeUI ui = (TreeUI) iterator.next();
+      ui.startEditingAtPath(tree, path);
+    }
+  }
+
+  /**
+   * Calls the {@link TreeUI#getEditingPath(JTree)} method for all
+   * the UI delegates managed by this <code>MultiTreeUI</code>,
+   * returning the path for the UI delegate from the primary look and
+   * feel.
+   *
+   * @param tree  the tree component.
+   *
+   * @return The path returned by the UI delegate from the primary
+   *         look and feel.
+   */
+  public TreePath getEditingPath(JTree tree)
+  {
+    TreePath result = null;
+    Iterator iterator = uis.iterator();
+    // first UI delegate provides the return value
+    if (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        result = ui.getEditingPath(tree);
+      }
+    // return values from auxiliary UI delegates are ignored
+    while (iterator.hasNext())
+      {
+        TreeUI ui = (TreeUI) iterator.next();
+        /* TreePath ignored = */ ui.getEditingPath(tree);
+      }
+    return result;
+  }
+
+}