abstract public Rectangle getBounds(TreePath path,
    Rectangle placeIn)
Returns a rectangle giving the bounds needed to draw path.

 abstract public boolean getExpandedState(TreePath path)
Returns true if the path is expanded, and visible.

 public TreeModel getModel() 
{
        return treeModel;
}

Returns the TreeModel that is providing the data.

 public NodeDimensions getNodeDimensions() 
{
        return nodeDimensions;
}

Returns the object that renders nodes in the tree, and which is responsible for calculating the dimensions of individual nodes.

 protected Rectangle getNodeDimensions(Object value,
    int row,
    int depth,
    boolean expanded,
    Rectangle placeIn) 
{
        NodeDimensions            nd = getNodeDimensions();
        if(nd != null) {
            return nd.getNodeDimensions(value, row, depth, expanded, placeIn);
        }
        return null;
}

Returns, by reference in placeIn, the size needed to represent value. If inPlace is null, a newly created Rectangle should be returned, otherwise the value should be placed in inPlace and returned. This will return null if there is no renderer.

 abstract public TreePath getPathClosestTo(int x,
    int y)
Returns the path to the node that is closest to x,y.  If
there is nothing currently visible this will return null,
otherwise it'll always return a valid path.
If you need to test if the
returned object is exactly at x, y you should get the bounds for
the returned path and test x, y against that.

 abstract public TreePath getPathForRow(int row)
Returns the path for passed in row.  If row is not visible
null is returned.

 public int getPreferredHeight() 
{
        // Get the height
        int           rowCount = getRowCount();
        if(rowCount  > 0) {
            Rectangle     bounds = getBounds(getPathForRow(rowCount - 1),
                                             null);
            if(bounds != null)
                return bounds.y + bounds.height;
        }
        return 0;
}

Returns the preferred height.

 public int getPreferredWidth(Rectangle bounds) 
{
        int           rowCount = getRowCount();
        if(rowCount  > 0) {
            // Get the width
            TreePath      firstPath;
            int           endY;
            if(bounds == null) {
                firstPath = getPathForRow(0);
                endY = Integer.MAX_VALUE;
            }
            else {
                firstPath = getPathClosestTo(bounds.x, bounds.y);
                endY = bounds.height + bounds.y;
            }
            Enumeration   paths = getVisiblePathsFrom(firstPath);
            if(paths != null && paths.hasMoreElements()) {
                Rectangle   pBounds = getBounds((TreePath)paths.nextElement(),
                                                null);
                int         width;
                if(pBounds != null) {
                    width = pBounds.x + pBounds.width;
                    if (pBounds.y  >= endY) {
                        return width;
                    }
                }
                else
                    width = 0;
                while (pBounds != null && paths.hasMoreElements()) {
                    pBounds = getBounds((TreePath)paths.nextElement(),
                                        pBounds);
                    if (pBounds != null && pBounds.y <  endY) {
                        width = Math.max(width, pBounds.x + pBounds.width);
                    }
                    else {
                        pBounds = null;
                    }
                }
                return width;
            }
        }
        return 0;
}

Returns the preferred width for the passed in region. The region is defined by the path closest to (bounds.x, bounds.y) and ends at bounds.height + bounds.y. If bounds is null, the preferred width for all the nodes will be returned (and this may be a VERY expensive computation).

 abstract public int getRowCount()
Number of rows being displayed.

 abstract public int getRowForPath(TreePath path)
Returns the row that the last item identified in path is visible
at.  Will return -1 if any of the elements in path are not
currently visible.

 public int getRowHeight() 
{
        return rowHeight;
}

Returns the height of each row. If the returned value is less than or equal to 0 the height for each row is determined by the renderer.

 public int[] getRowsForPaths(TreePath[] paths) 
{
        if(paths == null)
            return null;
        int               numPaths = paths.length;
        int[]             rows = new int[numPaths];
        for(int counter = 0; counter <  numPaths; counter++)
            rows[counter] = getRowForPath(paths[counter]);
        return rows;
}

Returns the rows that the TreePath instances in path are being displayed at. This method should return an array of the same length as that passed in, and if one of the TreePaths in path is not valid its entry in the array should be set to -1.

 public TreeSelectionModel getSelectionModel() 
{
        return treeSelectionModel;
}

Returns the model used to maintain the selection.

 abstract public int getVisibleChildCount(TreePath path)
Returns the number of visible children for row.

 abstract public Enumeration<TreePath> getVisiblePathsFrom(TreePath path)
Returns an Enumerator that increments over the visible
paths starting at the passed in location. The ordering of the
enumeration is based on how the paths are displayed.
The first element of the returned enumeration will be path,
unless it isn't visible,
in which case null will be returned.

 abstract public  void invalidatePathBounds(TreePath path)
Instructs the LayoutCache that the bounds for
path are invalid, and need to be updated.

 abstract public  void invalidateSizes()
Informs the TreeState that it needs to recalculate
all the sizes it is referencing.

 abstract public boolean isExpanded(TreePath path)
Returns true if the value identified by row is currently expanded.

 protected boolean isFixedRowHeight() 
{
        return (rowHeight  > 0);
}

Returns true if the height of each row is a fixed size.

 public boolean isRootVisible() 
{
        return rootVisible;
}

Returns true if the root node of the tree is displayed.

 abstract public  void setExpandedState(TreePath path,
    boolean isExpanded)
Marks the path path expanded state to
isExpanded.

 public  void setModel(TreeModel newModel) 
{
        treeModel = newModel;
}

Sets the TreeModel that will provide the data.

 public  void setNodeDimensions(NodeDimensions nd) 
{
        this.nodeDimensions = nd;
}

Sets the renderer that is responsible for drawing nodes in the tree and which is threfore responsible for calculating the dimensions of individual nodes.

 public  void setRootVisible(boolean rootVisible) 
{
        this.rootVisible = rootVisible;
}

Determines whether or not the root node from the TreeModel is visible.

 public  void setRowHeight(int rowHeight) 
{
        this.rowHeight = rowHeight;
}

Sets the height of each cell. If the specified value is less than or equal to zero the current cell renderer is queried for each row's height.

 public  void setSelectionModel(TreeSelectionModel newLSM) 
{
        if(treeSelectionModel != null)
            treeSelectionModel.setRowMapper(null);
        treeSelectionModel = newLSM;
        if(treeSelectionModel != null)
            treeSelectionModel.setRowMapper(this);
}

Sets the TreeSelectionModel used to manage the selection to new LSM.

 abstract public  void treeNodesChanged(TreeModelEvent e)

Invoked after a node (or a set of siblings) has changed in some
way. The node(s) have not changed locations in the tree or
altered their children arrays, but other attributes have
changed and may affect presentation. Example: the name of a
file has changed, but it is in the same location in the file
system.

e.path() returns the path the parent of the changed node(s).

e.childIndices() returns the index(es) of the changed node(s).

 abstract public  void treeNodesInserted(TreeModelEvent e)
Invoked after nodes have been inserted into the tree.

e.path() returns the parent of the new nodes
e.childIndices() returns the indices of the new nodes in
ascending order.

 abstract public  void treeNodesRemoved(TreeModelEvent e)
Invoked after nodes have been removed from the tree.  Note that
if a subtree is removed from the tree, this method may only be
invoked once for the root of the removed subtree, not once for
each individual set of siblings removed.

e.path() returns the former parent of the deleted nodes.

e.childIndices() returns the indices the nodes had before they were deleted in ascending order.

 abstract public  void treeStructureChanged(TreeModelEvent e)
Invoked after the tree has drastically changed structure from a
given node down.  If the path returned by e.getPath()
is of length one and the first element does not identify the
current root node the first element should become the new root
of the tree.

e.path() holds the path to the node.
e.childIndices() returns null.