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diff --git a/libjava/classpath/javax/swing/tree/AbstractLayoutCache.java b/libjava/classpath/javax/swing/tree/AbstractLayoutCache.java
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+/* AbstractLayoutCache.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.tree;
+
+import java.awt.Rectangle;
+import java.util.Enumeration;
+
+import javax.swing.event.TreeModelEvent;
+
+/**
+ * class AbstractLayoutCache
+ * 
+ * @author Andrew Selkirk
+ */
+public abstract class AbstractLayoutCache
+		implements RowMapper
+{
+	/**
+	 * class NodeDimensions
+	 */
+	public abstract static class NodeDimensions
+	{
+		/**
+		 * Creates <code>NodeDimensions</code> object.
+		 */
+		public NodeDimensions()
+		{
+			// Do nothing here.
+		}
+
+		/**
+		 * getNodeDimensions
+		 * 
+		 * @param value0 TODO
+		 * @param value1 TODO
+		 * @param value2 TODO
+		 * @param value3 TODO
+		 * @param value4 TODO
+		 * @return Rectangle
+		 */
+		public abstract Rectangle getNodeDimensions(Object value0, int value1,
+				int value2, boolean value3, Rectangle value4);
+	}
+
+	/**
+	 * nodeDimensions
+	 */
+	protected NodeDimensions nodeDimensions;
+
+	/**
+	 * treeModel
+	 */
+	protected TreeModel treeModel;
+
+	/**
+	 * treeSelectionModel
+	 */
+	protected TreeSelectionModel treeSelectionModel;
+
+	/**
+	 * rootVisible
+	 */
+	protected boolean rootVisible;
+
+	/**
+	 * rowHeight
+	 */
+	protected int rowHeight;
+
+	/**
+	 * Constructor AbstractLayoutCache
+	 */
+	public AbstractLayoutCache()
+	{
+		// Do nothing here.
+	}
+
+	/**
+	 * setNodeDimensions
+	 * 
+	 * @param dimensions TODO
+	 */
+	public void setNodeDimensions(NodeDimensions dimensions)
+	{
+		nodeDimensions = dimensions;
+	}
+
+	/**
+	 * getNodeDimensions
+	 * 
+	 * @return NodeDimensions
+	 */
+	public NodeDimensions getNodeDimensions()
+	{
+		return nodeDimensions;
+	}
+
+	/**
+	 * getNodeDimensions
+	 * 
+	 * @param value0 TODO
+	 * @param value1 TODO
+	 * @param value2 TODO
+	 * @param value3 TODO
+	 * @param value4 TODO
+	 * 
+	 * @return Rectangle
+	 */
+	protected Rectangle getNodeDimensions(Object value, int row, int depth,
+			boolean expanded, Rectangle bounds)
+	{
+		if (bounds == null)
+			return new Rectangle();
+		return null;
+		// TODO		
+	}
+
+	/**
+	 * Sets the model that provides the tree data.
+	 * 
+	 * @param the model
+	 */
+	public void setModel(TreeModel model)
+	{
+		treeModel = model;
+	}
+
+	/**
+	 * Returns the model that provides the tree data.
+	 * 
+	 * @return the model
+	 */
+	public TreeModel getModel()
+	{
+		return treeModel;
+	}
+
+	/**
+	 * setRootVisible
+	 * 
+	 * @param visible <code>true</code> if root should be visible,
+	 * <code>false</code> otherwise
+	 */
+	public void setRootVisible(boolean visible)
+	{
+		rootVisible = visible;
+	}
+
+	/**
+	 * isRootVisible
+	 * 
+	 * @return <code>true</code> if root is visible,
+	 * <code>false</code> otherwise
+	 */
+	public boolean isRootVisible()
+	{
+		return rootVisible;
+	}
+
+	/**
+	 * setRowHeight
+	 * 
+	 * @param height the row height
+	 */
+	public void setRowHeight(int height)
+	{
+		rowHeight = height;
+	}
+
+	/**
+	 * getRowHeight
+	 * 
+	 * @return the row height
+	 */
+	public int getRowHeight()
+	{
+		return rowHeight;
+	}
+
+	/**
+	 * setSelectionModel
+	 * 
+	 * @param model the model
+	 */
+	public void setSelectionModel(TreeSelectionModel model)
+	{
+		treeSelectionModel = model;
+	}
+
+	/**
+	 * getSelectionModel
+	 * 
+	 * @return the model
+	 */
+	public TreeSelectionModel getSelectionModel()
+	{
+		return treeSelectionModel;
+	}
+
+	/**
+	 * getPreferredHeight
+	 * 
+	 * @return int
+	 */
+	public int getPreferredHeight()
+	{
+		return 0; // TODO
+	}
+
+	/**
+	 * getPreferredWidth
+	 * 
+	 * @param value0 TODO
+	 * 
+	 * @return int
+	 */
+	public int getPreferredWidth(Rectangle value0)
+	{
+		return 0; // TODO
+	}
+
+	/**
+	 * isExpanded
+	 * 
+	 * @param value0 TODO
+	 * 
+	 * @return boolean
+	 */
+	public abstract boolean isExpanded(TreePath value0);
+
+	/**
+	 * getBounds
+	 * 
+	 * @param value0 TODO
+	 * @param value1 TODO
+	 * 
+	 * @return Rectangle
+	 */
+	public abstract Rectangle getBounds(TreePath value0, Rectangle value1);
+
+	/**
+	 * getPathForRow
+	 * 
+	 * @param row the row
+	 * 
+	 * @return the tree path
+	 */
+	public abstract TreePath getPathForRow(int row);
+
+	/**
+	 * getRowForPath
+	 * 
+	 * @param path the tree path
+	 * 
+	 * @return the row
+	 */
+	public abstract int getRowForPath(TreePath path);
+
+	/**
+	 * getPathClosestTo
+	 * 
+	 * @param value0 TODO
+	 * @param value1 TODO
+	 * 
+	 * @return the tree path
+	 */
+	public abstract TreePath getPathClosestTo(int value0, int value1);
+
+	/**
+	 * getVisiblePathsFrom
+	 * 
+	 * @param path the tree path
+	 * 
+	 * @return Enumeration
+	 */
+	public abstract Enumeration getVisiblePathsFrom(TreePath path);
+
+	/**
+	 * getVisibleChildCount
+	 * 
+	 * @param path the tree path
+	 * 
+	 * @return int
+	 */
+	public abstract int getVisibleChildCount(TreePath value0);
+
+	/**
+	 * setExpandedState
+	 * 
+	 * @param value0 TODO
+	 * 
+	 * @param value1 TODO
+	 */
+	public abstract void setExpandedState(TreePath value0, boolean value1);
+
+	/**
+	 * getExpandedState
+	 * 
+	 * @param path the tree path
+	 * 
+	 * @return boolean
+	 */
+	public abstract boolean getExpandedState(TreePath path);
+
+	/**
+	 * getRowCount
+	 * 
+	 * @return the number of rows
+	 */
+	public abstract int getRowCount();
+
+	/**
+	 * invalidateSizes
+	 */
+	public abstract void invalidateSizes();
+
+	/**
+	 * invalidatePathBounds
+	 * 
+	 * @param path the tree path
+	 */
+	public abstract void invalidatePathBounds(TreePath path);
+
+	/**
+	 * treeNodesChanged
+	 * 
+	 * @param event the event to send
+	 */
+	public abstract void treeNodesChanged(TreeModelEvent event);
+
+	/**
+	 * treeNodesInserted
+	 * 
+	 * @param event the event to send
+	 */
+	public abstract void treeNodesInserted(TreeModelEvent event);
+
+	/**
+	 * treeNodesRemoved
+	 * 
+	 * @param event the event to send
+	 */
+	public abstract void treeNodesRemoved(TreeModelEvent event);
+
+	/**
+	 * treeStructureChanged
+	 * 
+	 * @param event the event to send
+	 */
+	public abstract void treeStructureChanged(TreeModelEvent event);
+
+	/**
+	 * getRowsForPaths
+	 * 
+	 * @param paths the tree paths
+	 * 
+	 * @return an array of rows
+	 */
+	public int[] getRowsForPaths(TreePath[] paths)
+	{
+		return null; // TODO
+	}
+
+	/**
+	 * isFixedRowHeight
+	 * 
+	 * @return boolean
+	 */
+	protected boolean isFixedRowHeight()
+	{
+		return false; // TODO
+	}
+}