JTree Problem, Making Sure Selected Node is Visible in ScrollPane

Is it possible to find out if the node selected in a JTree is visible in the JScrollPane in which it is contained? And if it isn't to scroll so that the node is visible?
Thanks

hello again dosteov,
You can get the rectangle based on a row or a TreePath. Given the rectangle, you can call scrollPane.scrollRectToVisible() with the rectangle returned from tree.getRowBounds(row).
Note that you will need to do some rectangle movement if your tree is in a container rather than directly in the scrollpane.
-jonathan

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Hi Camickr,
Thanks for the reply. Iam sorry I didn't include the sources the first time around. There were too many of them. I have created a small, self-contained, compilable program that demonstrates the problem and including it herewith. Still there's quite many files but they are all needed Iam afraid. The only one you will have to concern yourself fior this problem is the file IconRenderer.java. The treenode background and the other cells background are not in sync when table row is not selected in this example though. But they are in my real program. I just need them to be in sync i.e have the same background color when the row is selected.
Your help would be very much appreciated.
These are the files that are included below:
1. AbstractTreeTableModel.java
2. Bookmarks.java
3. BookmarksModel.java
4. DynamicTreeTableModel.java
5. IconRenderer.java
6. IndicatorRenderer.java
7. JTreeTable.java
8. TreeTableExample3.java (contains main)
9. TreeTableModel.java
10. TreeTableModelAdapter.java
The copyright and javadocs information has been stripped for clarity.
cheers,
vidyut
// AbstractTreeTableModel.java BEGIN
import javax.swing.tree.*;
import javax.swing.event.*;
public abstract class AbstractTreeTableModel implements TreeTableModel {
    protected Object root;
    protected EventListenerList listenerList = new EventListenerList();
    public AbstractTreeTableModel(Object root) {
        this.root = root;
    // Default implementations for methods in the TreeModel interface.
    public Object getRoot() {
        return root;
    public boolean isLeaf(Object node) {
        return getChildCount(node) == 0;
    public void valueForPathChanged(TreePath path, Object newValue) {}
    // This is not called in the JTree's default mode:
    // use a naive implementation.
    public int getIndexOfChild(Object parent, Object child) {
        for (int i = 0; i < getChildCount(parent); i++) {
         if (getChild(parent, i).equals(child)) {
             return i;
     return -1;
    public void addTreeModelListener(TreeModelListener l) {
        listenerList.add(TreeModelListener.class, l);
    public void removeTreeModelListener(TreeModelListener l) {
        listenerList.remove(TreeModelListener.class, l);
    protected void fireTreeNodesChanged(Object source, Object[] path,
                                        int[] childIndices,
                                        Object[] children) {
        // Guaranteed to return a non-null array
        Object[] listeners = listenerList.getListenerList();
        TreeModelEvent e = null;
        // Process the listeners last to first, notifying
        // those that are interested in this event
        for (int i = listeners.length-2; i>=0; i-=2) {
            if (listeners==TreeModelListener.class) {
// Lazily create the event:
if (e == null)
e = new TreeModelEvent(source, path,
childIndices, children);
((TreeModelListener)listeners[i+1]).treeNodesChanged(e);
protected void fireTreeNodesInserted(Object source, Object[] path,
int[] childIndices,
Object[] children) {
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2) {
if (listeners[i]==TreeModelListener.class) {
// Lazily create the event:
if (e == null)
e = new TreeModelEvent(source, path,
childIndices, children);
((TreeModelListener)listeners[i+1]).treeNodesInserted(e);
protected void fireTreeNodesRemoved(Object source, Object[] path,
int[] childIndices,
Object[] children) {
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2) {
if (listeners[i]==TreeModelListener.class) {
// Lazily create the event:
if (e == null)
e = new TreeModelEvent(source, path,
childIndices, children);
((TreeModelListener)listeners[i+1]).treeNodesRemoved(e);
protected void fireTreeStructureChanged(Object source, Object[] path,
int[] childIndices,
Object[] children) {
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListenerList();
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2) {
if (listeners[i]==TreeModelListener.class) {
// Lazily create the event:
if (e == null)
e = new TreeModelEvent(source, path,
childIndices, children);
((TreeModelListener)listeners[i+1]).treeStructureChanged(e);
// Default impelmentations for methods in the TreeTableModel interface.
public Class getColumnClass(int column) { return Object.class; }
public boolean isCellEditable(Object node, int column) {
return getColumnClass(column) == TreeTableModel.class;
public void setValueAt(Object aValue, Object node, int column) {}
// Left to be implemented in the subclass:
* public Object getChild(Object parent, int index)
* public int getChildCount(Object parent)
* public int getColumnCount()
* public String getColumnName(Object node, int column)
* public Object getValueAt(Object node, int column)
// AbstractTreeTableModel.java END
// Bookmarks.java BEGIN
import java.io.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
import javax.swing.text.html.parser.*;
public class Bookmarks {
/** The root node the bookmarks are added to. */
private BookmarkDirectory root;
* Creates a new Bookmarks object, with the entries coming from
* <code>path</code>.
public Bookmarks(String path) {
     root = new BookmarkDirectory("Bookmarks");
     if (path != null) {
     parse(path);
* Returns the root of the bookmarks.
public BookmarkDirectory getRoot() {
     return root;
protected void parse(String path) {
     try {
     BufferedReader reader = new BufferedReader(new FileReader
                                   (path));
     new ParserDelegator().parse(reader, new CallbackHandler(), true);
     catch (IOException ioe) {
     System.out.println("IOE: " + ioe);
     JOptionPane.showMessageDialog(null, "Load Bookmarks",
                         "Unable to load bookmarks",
                         JOptionPane.ERROR_MESSAGE);
private static final short NO_ENTRY = 0;
private static final short BOOKMARK_ENTRY = 2;
private static final short DIRECTORY_ENTRY = 3;
private class CallbackHandler extends HTMLEditorKit.ParserCallback {
     /** Parent node that new entries are added to. */
     private BookmarkDirectory parent;
     /** The most recently parsed tag. */
     private HTML.Tag tag;
     /** The last tag encountered. */
     private HTML.Tag lastTag;
     * The state, will be one of NO_ENTRY, DIRECTORY_ENTRY,
* or BOOKMARK_ENTRY.
     private short state;
     * Date for the next BookmarkDirectory node.
     private Date parentDate;
     * The values from the attributes are placed in here. When the
     * text is encountered this is added to the node hierarchy and a
* new instance is created.
     private BookmarkEntry lastBookmark;
     * Creates the CallbackHandler.
     public CallbackHandler() {
     parent = root;
     lastBookmark = new BookmarkEntry();
     // HTMLEditorKit.ParserCallback methods
     * Invoked when text in the html document is encountered. Based on
     * the current state, this will either: do nothing
* (state == NO_ENTRY),
     * create a new BookmarkEntry (state == BOOKMARK_ENTRY) or
* create a new
     * BookmarkDirectory (state == DIRECTORY_ENTRY). If state is
* != NO_ENTRY, it is reset to NO_ENTRY after this is
* invoked.
public void handleText(char[] data, int pos) {
     switch (state) {
     case NO_ENTRY:
          break;
     case BOOKMARK_ENTRY:
          // URL.
          lastBookmark.setName(new String(data));
parent.add(lastBookmark);
lastBookmark = new BookmarkEntry();
          break;
     case DIRECTORY_ENTRY:
          // directory.
          BookmarkDirectory newParent = new
               BookmarkDirectory(new String(data));
          newParent.setCreated(parentDate);
          parent.add(newParent);
          parent = newParent;
          break;
     default:
          break;
state = NO_ENTRY;
     * Invoked when a start tag is encountered. Based on the tag
     * this may update the BookmarkEntry and state, or update the
     * parentDate.
     public void handleStartTag(HTML.Tag t, MutableAttributeSet a,
                    int pos) {
     lastTag = tag;
     tag = t;
     if (t == HTML.Tag.A && lastTag == HTML.Tag.DT) {
long lDate;
          // URL
          URL url;
          try {
          url = new URL((String)a.getAttribute(HTML.Attribute.HREF));
          } catch (MalformedURLException murle) {
          url = null;
          lastBookmark.setLocation(url);
          // created
          Date date;
          try {
lDate = Long.parseLong((String)a.getAttribute("add_date"));
if (lDate != 0l) {
date = new Date(1000l * lDate);
else {
date = null;
          } catch (Exception ex) {
          date = null;
          lastBookmark.setCreated(date);
          // last visited
          try {
lDate = Long.parseLong((String)a.
getAttribute("last_visit"));
if (lDate != 0l) {
date = new Date(1000l * lDate);
else {
date = null;
          } catch (Exception ex) {
          date = null;
          lastBookmark.setLastVisited(date);
          state = BOOKMARK_ENTRY;
     else if (t == HTML.Tag.H3 && lastTag == HTML.Tag.DT) {
          // new node.
          try {
          parentDate = new Date(1000l * Long.parseLong((String)a.
                              getAttribute("add_date")));
          } catch (Exception ex) {
          parentDate = null;
          state = DIRECTORY_ENTRY;
     * Invoked when the end of a tag is encountered. If the tag is
     * a DL, this will set the node that parents are added to the current
     * nodes parent.
     public void handleEndTag(HTML.Tag t, int pos) {
     if (t == HTML.Tag.DL && parent != null) {
          parent = (BookmarkDirectory)parent.getParent();
public static class BookmarkDirectory extends DefaultMutableTreeNode {
     /** Dates created. */
     private Date created;
     public BookmarkDirectory(String name) {
     super(name);
     public void setName(String name) {
     setUserObject(name);
     public String getName() {
     return (String)getUserObject();
     public void setCreated(Date date) {
     this.created = date;
     public Date getCreated() {
     return created;
public static class BookmarkEntry extends DefaultMutableTreeNode {
     /** User description of the string. */
     private String name;
     /** The URL the bookmark represents. */
     private URL location;
     /** Dates the URL was last visited. */
     private Date lastVisited;
     /** Date the URL was created. */
     private Date created;
     public void setName(String name) {
     this.name = name;
     public String getName() {
     return name;
     public void setLocation(URL location) {
     this.location = location;
     public URL getLocation() {
     return location;
     public void setLastVisited(Date date) {
     lastVisited = date;
     public Date getLastVisited() {
     return lastVisited;
     public void setCreated(Date date) {
     this.created = date;
     public Date getCreated() {
     return created;
     public String toString() {
     return getName();
// Bookmarks.java END
// BookmarksModel.java BEGIN
import java.util.Date;
public class BookmarksModel extends DynamicTreeTableModel {
* Names of the columns.
private static final String[] columnNames =
{ "Name", "Location", "Last Visited", "Created" };
* Method names used to access the data to display.
private static final String[] methodNames =
{ "getName", "getLocation", "getLastVisited","getCreated" };
* Method names used to set the data.
private static final String[] setterMethodNames =
{ "setName", "setLocation", "setLastVisited","setCreated" };
private static final Class[] classes =
{ TreeTableModel.class, String.class, Date.class, Date.class };
public BookmarksModel(Bookmarks.BookmarkDirectory root) {
     super(root, columnNames, methodNames, setterMethodNames, classes);
public boolean isCellEditable(Object node, int column) {
     switch (column) {
     case 0:
     // Allow editing of the name, as long as not the root.
     return (node != getRoot());
     case 1:
     // Allow editing of the location, as long as not a
     // directory
     return (node instanceof Bookmarks.BookmarkEntry);
     default:
     // Don't allow editing of the date fields.
     return false;
// BookmarksModel.java END
// DynamicTreeTableModel.java BEGIN
import java.lang.reflect.*;
import javax.swing.tree.*;
public class DynamicTreeTableModel extends AbstractTreeTableModel {
/** Names of the columns, used for the TableModel getColumnName method. */
private String[] columnNames;
private String[] methodNames;
private String[] setterMethodNames;
/** Column classes, used for the TableModel method getColumnClass. */
private Class[] cTypes;
public DynamicTreeTableModel(TreeNode root, String[] columnNames,
                    String[] getterMethodNames,
                    String[] setterMethodNames,
                    Class[] cTypes) {
     super(root);
     this.columnNames = columnNames;
     this.methodNames = getterMethodNames;
     this.setterMethodNames = setterMethodNames;
     this.cTypes = cTypes;
public int getChildCount(Object node) {
     return ((TreeNode)node).getChildCount();
public Object getChild(Object node, int i) {
     return ((TreeNode)node).getChildAt(i);
public boolean isLeaf(Object node) {
     return ((TreeNode)node).isLeaf();
public int getColumnCount() {
     return columnNames.length;
public String getColumnName(int column) {
     if (cTypes == null || column < 0 || column >= cTypes.length) {
     return null;
     return columnNames[column];
public Class getColumnClass(int column) {
     if (cTypes == null || column < 0 || column >= cTypes.length) {
     return null;
     return cTypes[column];
public Object getValueAt(Object node, int column) {
     try {
     Method method = node.getClass().getMethod(methodNames[column],
                              null);
     if (method != null) {
          return method.invoke(node, null);
     catch (Throwable th) {}
     return null;
* Returns true if there is a setter method name for column
* <code>column</code>. This is set in the constructor.
public boolean isCellEditable(Object node, int column) {
return (setterMethodNames != null &&
     setterMethodNames[column] != null);
// Note: This looks up the methods each time! This is rather inefficient;
// it should really be changed to cache matching
// methods/constructors
// based on <code>node</code>'s class, and code>aValue</code>'s
//class.
public void setValueAt(Object aValue, Object node, int column) {
     boolean found = false;
     try {
     // We have to search through all the methods since the
     // types may not match up.
     Method[] methods = node.getClass().getMethods();
     for (int counter = methods.length - 1; counter >= 0; counter--) {
          if (methods[counter].getName().equals
          (setterMethodNames[column]) && methods[counter].
          getParameterTypes() != null && methods[counter].
          getParameterTypes().length == 1) {
          // We found a matching method
          Class param = methods[counter].getParameterTypes()[0];
          if (!param.isInstance(aValue)) {
               // Yes, we can use the value passed in directly,
               // no coercision is necessary!
               if (aValue instanceof String &&
               ((String)aValue).length() == 0) {
               // Assume an empty string is null, this is
               // probably bogus for here.
               aValue = null;
               else {
               // Have to attempt some sort of coercision.
               // See if the expected parameter type has
               // a constructor that takes a String.
               Constructor cs = param.getConstructor
               (new Class[] { String.class });
               if (cs != null) {
                    aValue = cs.newInstance(new Object[]
                                   { aValue });
               else {
                    aValue = null;
          // null either means it was an empty string, or there
          // was no translation. Could potentially deal with these
          // differently.
          methods[counter].invoke(node, new Object[] { aValue });
          found = true;
          break;
     } catch (Throwable th) {
     System.out.println("exception: " + th);
     if (found) {
     // The value changed, fire an event to notify listeners.
     TreeNode parent = ((TreeNode)node).getParent();
     fireTreeNodesChanged(this, getPathToRoot(parent),
                    new int[] { getIndexOfChild(parent, node) },
                    new Object[] { node });
public TreeNode[] getPathToRoot(TreeNode aNode) {
return getPathToRoot(aNode, 0);
private TreeNode[] getPathToRoot(TreeNode aNode, int depth) {
TreeNode[] retNodes;
     // This method recurses, traversing towards the root in order
     // size the array. On the way back, it fills in the nodes,
     // starting from the root and working back to the original node.
/* Check for null, in case someone passed in a null node, or
they passed in an element that isn't rooted at root. */
if(aNode == null) {
if(depth == 0)
return null;
else
retNodes = new TreeNode[depth];
else {
depth++;
if(aNode == root)
retNodes = new TreeNode[depth];
else
retNodes = getPathToRoot(aNode.getParent(), depth);
retNodes[retNodes.length - depth] = aNode;
return retNodes;
// DynamicTreeTableModel.java END
// IconRenderer.java BEGIN
import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.plaf.basic.BasicTreeUI;
class IconRenderer extends DefaultTreeCellRenderer
// Color backColor = new Color(0xD0, 0xCC, 0xFF);
Color backColor = new Color(0xF0, 0xF0, 0xE0);
String tipText = "";
JTree tree;
int currRow = 0;
boolean m_selected;
JTable table;
public IconRenderer(JTree tree, JTable table) {
this.table = table;
// setBackground(backColor);
setBackground(Color.GREEN);
setForeground(Color.black);
     this.tree = tree;
public Component getTreeCellRendererComponent(JTree tree, Object value,
boolean selected,
boolean expanded, boolean leaf,
int row, boolean hasFocus) {
     Object node = null;
     super.getTreeCellRendererComponent(
tree, value, selected,
expanded, leaf, row,
hasFocus);
     TreePath treePath = tree.getPathForRow(row);
if(treePath != null)
          node = treePath.getLastPathComponent();
currRow = row;
m_selected = selected;
DefaultMutableTreeNode itc = null;
if (node instanceof DefaultMutableTreeNode) {
itc = (DefaultMutableTreeNode)node;
     setClosedIcon(closedIcon);
setOpenIcon(openIcon);
return this;
/* Override the default to send back different strings for folders and leaves. */
public String getToolTipText() {
return tipText;
* Paints the value. The background is filled based on selected.
public void paint(Graphics g) {
     super.paint(g);
     Color bColor = null;
     if(!m_selected) {
          System.out.println(" iconren not sel currRow " + currRow);
          if(currRow % 2 == 0) {
               bColor = Color.WHITE;
          } else {
          bColor = backColor;
     } else {
          bColor = table.getSelectionBackground();
          System.out.println("in else selbg = " + bColor);
          bColor = new Color(0xF0, 0xCC, 0x92);
          System.out.println(" bColor aft = " + bColor);
     int imageOffset = -1;
     if(bColor != null) {
     imageOffset = getLabelStart();
     g.setColor(bColor);
     if(!m_selected) {
          System.out.println(" not sel setting white ");
          g.setXORMode(new Color(0xFF, 0xFF, 0xFF));
     } else {
//          g.setXORMode(new Color(0xCC, 0xCC, 0x9F));
          g.setXORMode(new Color(0x00, 0x00, 0x00));
          System.out.println(" using color = " + g.getColor());
     if(getComponentOrientation().isLeftToRight()) {
     g.fillRect(imageOffset, 0, getWidth() - 1 - imageOffset,
               getHeight());
     } else {
     g.fillRect(0, 0, getWidth() - 1 - imageOffset,
               getHeight());
private int getLabelStart() {
     Icon currentI = getIcon();
     if(currentI != null && getText() != null) {
     return currentI.getIconWidth() + Math.max(0, getIconTextGap() - 1);
     return 0;
// IconRenderer.java END
// IndicatorRenderer.java BEGIN
// import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import javax.swing.table.*;
import javax.swing.table.*;
import javax.swing.plaf.basic.*;
import java.awt.event.*;
import java.util.EventObject;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.StringTokenizer;
import java.util.Arrays;
class IndicatorRenderer extends DefaultTableCellRenderer {
/** Makes sure the number of displayed in an internationalized
* manner. */
protected NumberFormat formatter;
/** Row that is currently being painted. */
protected int lastRow;
protected int reloadRow;
protected int reloadCounter;
protected TreeTableModel treeTableModel;
protected TreeTableModelAdapter treeTblAdapter;
protected JTable table;
Component renderer = null;
Color backColor = new Color(0xF0, 0xF0, 0xE0);
IndicatorRenderer(TreeTableModelAdapter treeTblAdapter, TreeTableModel treeTableModel) {
     setHorizontalAlignment(JLabel.RIGHT);
     setFont(new Font("serif", Font.BOLD, 12));
     this.treeTableModel = treeTableModel;
     this.treeTblAdapter = treeTblAdapter;
* Invoked as part of DefaultTableCellRenderers implemention. Sets
* the text of the label.
public void setValue(Object value) {
/* setText((value == null) ? "---" : formatter.format(value)); */
     setText((value == null) ? "---" : (String) value.toString());
* Returns this.
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
     renderer = super.getTableCellRendererComponent(table, value, isSelected,
hasFocus, row, column);
     lastRow = row;
     this.table = table;
          if(isSelected) {
               doMask(hasFocus, isSelected);
          } else
          setBackground(table.getBackground());
return renderer;
* If the row being painted is also being reloaded this will draw
* a little indicator.
public void paint(Graphics g) {
     super.paint(g);
private void doMask(boolean hasFocus, boolean selected) {
          maskBackground(hasFocus, selected);
private void maskBackground(boolean hasFocus, boolean selected) {
          Color seed = null;
          seed = table.getSelectionBackground();
          Color color = seed;
          if (color != null) {
               setBackground(
new Color(0xF0, 0xCC, 0x92));
// IndicatorRenderer.java END
// JTreeTable.java BEGIN
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import javax.swing.table.*;
import java.awt.event.*;
import java.util.EventObject;
public class JTreeTable extends JTable {
/** A subclass of JTree. */
protected TreeTableCellRenderer tree;
protected IndicatorRenderer indicatorRenderer = null;
public JTreeTable(TreeTableModel treeTableModel) {
     super();
     // Creates the tree. It will be used as a renderer and editor.
     tree = new TreeTableCellRenderer(treeTableModel);
     TreeTableModelAdapter tdap = new TreeTableModelAdapter(treeTableModel, tree);
     // Installs a tableModel representing the visible rows in the tree.
     super.setModel(tdap);
     // Forces the JTable and JTree to share their row selection models.
     ListToTreeSelectionModelWrapper selectionWrapper = new
     ListToTreeSelectionModelWrapper();
     tree.setSelectionModel(selectionWrapper);
     setSelectionModel(selectionWrapper.getListSelectionModel());
     // Installs the tree editor renderer and editor.
     setDefaultRenderer(TreeTableModel.class, tree);
     setDefaultEditor(TreeTableModel.class, new TreeTableCellEditor());
     indicatorRenderer = new IndicatorRenderer(tdap, treeTableModel);
     // No grid.
     setShowGrid(false);
     // No intercell spacing
     setIntercellSpacing(new Dimension(0, 0));
     // And update the height of the trees row to match that of
     // the table.
     //if (tree.getRowHeight() < 1) {
     // Metal looks better like this.
     setRowHeight(20);
public TableCellRenderer getCellRenderer(int row, int col) {
          if(col == 0)
          return tree;
          else
          return indicatorRenderer;
public void updateUI() {
     super.updateUI();
     if(tree != null) {
     tree.updateUI();
     // Do this so that the editor is referencing the current renderer
     // from the tree. The renderer can potentially change each time
     // laf changes.
     setDefaultEditor(TreeTableModel.class, new TreeTableCellEditor());
     // Use the tree's default foreground and background colors in the
     // table.
LookAndFeel.installColorsAndFont(this, "Tree.background",
"Tree.foreground", "Tree.font");
public int getEditingRow() {
return (getColumnClass(editingColumn) == TreeTableModel.class) ? -1 :
     editingRow;
private int realEditingRow() {
     return editingRow;
public void sizeColumnsToFit(int resizingColumn) {
     super.sizeColumnsToFit(resizingColumn);
     if (getEditingColumn() != -1 && getColumnClass(editingColumn) ==
     TreeTableModel.class) {
     Rectangle cellRect = getCellRect(realEditingRow(),
                         getEditingColumn(), false);
Component component = getEditorComponent();
     component.setBounds(cellRect);
component.validate();
public void setRowHeight(int rowHeight) {
super.setRowHeight(rowHeight);
     if (tree != null && tree.getRowHeight() != rowHeight) {
tree.setRowHeight(getRowHeight());
public JTree getTree() {
     return tree;
public boolean editCellAt(int row, int column, EventObject e){
     boolean retValue = super.editCellAt(row, column, e);
     if (retValue && getColumnClass(column) == TreeTableModel.class) {
     repaint(getCellRect(row, column, false));
     return retValue;
public class TreeTableCellRenderer extends JTree implements
     TableCellRenderer {
     /** Last table/tree row asked to renderer. */
     protected int visibleRow;
     /** Border to draw around the tree, if this is non-null, it will
     * be painted. */
     protected Border highlightBorder;
     public TreeTableCellRenderer(Tr

How to select node in JTree without firing event?

I have got standard situation. JTree in the left panel, and several edit boxes in right panel. Certainly, I have TreeSelectionListener, which on every tree node selection shows corresponding model values in edit boxes.
I'd like to implement next logic:
1. Something was changed in any edit box in right panel. Model has been changed.
2. User clicks on different node in tree.
3. Dialog "Message was not saved. Save?" with Yes/No/Cancel buttons are shown.
Yes/No buttons are easy to handle.
Question is about Cancel. I'd like on Cancel button left all edit boxes in their present state (do not restore values from saved model) and select back node, which wasn't saved.
Problem is next. If I select node by setSelectionPath or smth like that, but... JTree fires event and my listener receives onTreeItemSelected back, which checks that node wasn't saved and ......
Who does have any idea, or have done similar tasks? How can I select node and do not allow tree fire event this time?
Thanks in advance.

First, as soon as the model changes (when editing any
combo box) some flag will be set. Now the logic which
updates the combo boxes will do it only on a change of
the current node and (this is new) if the flag wasn't
set. You should have some flag anyway because somehow
you must determine when to show the dialog, shouldn't
you?Yes, I have got this logic implemented. But it's only the half :)
I know exactly when my model has been changed, but if it was changed, i'd like to ask user what to do next - svae/loose changes/cancel
And on cancel i'd like to select last edited tree node and do not get event from tree at that moment.
>
Second way, prevent selecting a new node if that flag
has been set. You could do this by subclassing
DefaultTreeSelectionModel and overriding some methods
(setSelectionPath() et al).Ok. I'll investigate this.
>
MichaelThanks.

After updating to 7.0.6 my iphone no longer shows in itunes. However it is recognised by my PC (windows 8) when click on my computer. I have tried reinstalling itunes and making sure the drivers are up to date. Has anyone else had this problem?

Hi guys. After updating to 7.0.6 my iphone 5s is no longer showing in itunes. Strangley it is recognised by my PC (windows 8) when I click on my computer. I have tried reinstalling itunes and making sure the drivers are up to date, but this has made no difference. Has anyone else had this problem or does anyone have any advice? Thanks

Device not detected in iTunes for Windows

Change icon of a non selected node in JTree

Hello
I have a swing application contening a JTree.
I'd like to know how to change the icon of a non selected node in my tree. I have the information about the node and its path. I try to change userObject information and the icon of the node with the setIcon of (DefaultMutableTreeNode), and reload the node (DefaultTreeModel) but it doesn't work.
Do I have to set the change in my CellRenderer ?
Any advice will be welcome
Anne

If you carefully look at the java tutorial tree, the change is made for all the leaf icon. What I want is to change the icon of a not selected node of my tree while I do other stuff with the other nodes like select, display their contents, drag them ...
the operation of a not selected node is independant from the selection in the tree.
So I still ask how to force a node to reload and take care of the change of his icon.
Anne

How could i get the selected node in the JTree

getLastSelectedPathComponent() �returns the parent node of currenr selected, so how could I get the selected node itself in the JTree
I will appretiate for any help!

i think you can get by....
TreePath treePath = tree.getSelectionPath();
DefaultMutableTreeNode treeNode = (DefaultMutableTreeNode) treePath.getLastPathComponent();

JTree: How to get the currently selected node

How do I get the currently selected node in JTree?
getLastSelectedPathComponent() this method always return the last selected node and not the current one.
Thanks in advance
Sachin

Use
TreePath selectedPath = tree.getSelectionPath()If your tree allows multiple selections, use
TreePath [] selectedPaths = tree.getSelectionPaths() this will return an array of all selected tree paths.
Once you get the tree path, call the treePath.getLastPathComponent(). this should tell you the currently selected node.
Hope this helps
Sai Pullabhotla

JTree and selected node question

Hello
Is it possible to convert the selected node to an int?
I guess I'm looking for something llike this.
int nodeNumber = node.getSelectedIndex();
There is nothing like that in the API, and it would help greatly if I could find a way do this.
Thanks
Have a good holiday
Jim

From the API for JTree
public int getMinSelectionRow()
Gets the first selected row.
Returns:
an integer designating the first selected row, where 0 is the first row in the display
But I think this is based on how many rows are displayed at the present time and might change if the tree is opened above it.

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i am currently using setCellRenderer() for highlighting a selected node in my JTree.but when i select another node, the previously selected node loses its highlight.i would like to know of how i could make the highlight in the selected nodes remain persistent.

I am currently using DISCONTIGUOUS_TREE_SELECTION only. my requirement is that i should be able to select any number of nodes.so i use this selection.
but at the same time, my highlight in selected nodes should be like a toggle-state.
if i select an already selected node ( say A), the highlight has to go away.
and at the same time, th highlight on previously selected nodes (say B, C) should be persistent.
am currently using TreeSelectionListener. and for rendering am using SetCellRenderer.
in this scenario, how could my work be accomplished?

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I wan to get all the selected nodes/objects values that I added to the JTree. How can I do this?
Thanks.

TreePath[] paths = tree.getSelectedPath();
for(int i = 0; i < paths.length; i++){
TreeNode node = (TreeNode)paths.getLastPathComponent();
Object mySelectedObject = node.getUserObject();
}Some minor Errors
We have to use array paths[i] instead of paths
The correct code as used by me is
        javax.swing.tree.TreePath[] paths = jTree1.getSelectionModel().getSelectionPaths();
        for(int i = 0; i < paths.length; i++){
            javax.swing.tree.TreeNode node = (javax.swing.tree.TreeNode)paths.getLastPathComponent();
System.out.println(((javax.swing.tree.DefaultMutableTreeNode)node).getUserObject());
CSJakharia

Setting custom color for selected node in JTree?

Hi,
i want to set my own color for selected node in JTree. i don't want to set for all the nodes...how to set Color for Selected node using TreeCellRender class?
Thanks
Mani

I assume you are not setting a custom tree cell renderer...
javax.swing.JTree theTree = ...;
java.awt.Color newBGColor = ...;
((javax.swing.tree.DefaultTreeCellRenderer)theTree.getCellRenderer())
.setBackgroundSelectionColor(newColor);

My photos aren't being moved automatically from my iphone 5c to my laptop. i've tried making sure the email addresses match. how can i be sure? or is there another problem.

my photos aren't being transferred from my iphone 5c to my laptop. this option had been working on my 4s until just before i changed over to the 5c. i have tried making sure the email address on the phone and the laptop agree. perhaps i haven't done that correctly. or is there another problem?

Hi graylady66,
Welcome to the Support Communities!
Have you set up Photo Stream on your iPhone 5C? I can't tell what computer you have from your post, so I'll include all of the Photo Stream information for you:
iCloud: Photo Stream
http://support.apple.com/kb/PH2596
iCloud: Set up My Photo Stream
http://support.apple.com/kb/PH13693
iCloud: My Photo Stream troubleshooting
http://support.apple.com/kb/TS3989http://support.apple.com/kb/TS3989
Cheers,
- Judy

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