I'm working with the Sun provided example "Creating TreeTables: Part 2" located at
Java Tree Table2 Example
What I am trying to do is add a MouseListener to my JTree but with limited success.
1. It only fires for a left mouse click - it doesn't appear to fire at all if I use right click.
2. I only get a response from the mousePressed method, I get nothing from the mouseReleased or mouseClicked methods.
3. I've tried to implement an if getClickCount structure to detect single or double clicks but it seems to only ever register a single mouse click.
The src.zip can be found at the link given above. My version of the TreeTableExmaple2.java is below (I've added a number of JOptionPane.showMessageDialog calls to determine what actions are being performed).
Any advice on what I'm doing wrong would be greatly appreciated.
Thanks
Richard
/*
* @(#)TreeTableModelAdapter.java1.2 98/10/27
*
* Copyright 1997, 1998 by Sun Microsystems, Inc.,
* 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
* All rights reserved.
*
* This software is the confidential and proprietary information
* of Sun Microsystems, Inc. ("Confidential Information"). You
* shall not disclose such Confidential Information and shall use
* it only in accordance with the terms of the license agreement
* you entered into with Sun.
*/
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;
import javax.swing.tree.TreePath;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.JOptionPane;
import java.awt.event.*;
/**
* This is a wrapper class takes a TreeTableModel and implements
* the table model interface. The implementation is trivial, with
* all of the event dispatching support provided by the superclass:
* the AbstractTableModel.
*
* @version 1.2 10/27/98
*
* @author Philip Milne
* @author Scott Violet
*/
public class TreeTableModelAdapter extends AbstractTableModel
{
JTree tree;
TreeTableModel treeTableModel;
public TreeTableModelAdapter(TreeTableModel treeTableModel, JTree tree) {
this.tree = tree;
this.treeTableModel = treeTableModel;
tree.addTreeExpansionListener(new TreeExpansionListener() {
// Don't use fireTableRowsInserted() here; the selection model
// would get updated twice.
public void treeExpanded(TreeExpansionEvent event) {
fireTableDataChanged();
}
public void treeCollapsed(TreeExpansionEvent event) {
fireTableDataChanged();
}
});
MouseListener ml = new MouseAdapter() {
public void mouseReleased(MouseEvent e) {
if (SwingUtilities.isLeftMouseButton(e)) {JOptionPane.showMessageDialog(null,"Left Mouse Button");}
if (SwingUtilities.isRightMouseButton(e)) {JOptionPane.showMessageDialog(null,"Right Mouse Button");}
int selRow = ( (JTree)e.getComponent()).getRowForLocation(e.getX(), e.getY());
TreePath selPath = ( (JTree)e.getComponent()).getPathForLocation(e.getX(), e.getY());
if(selRow != -1) {
if(e.getClickCount() == 1) {
//mySingleClick(selRow, selPath);
//JOptionPane.showMessageDialog(null,"Released Single Click path="+selPath);
;
}
else if(e.getClickCount() == 2) {
//myDoubleClick(selRow, selPath);
JOptionPane.showMessageDialog(null,"Released Double Click");
}
}
}
public void mouseClicked(MouseEvent e) {
if (SwingUtilities.isLeftMouseButton(e)) {JOptionPane.showMessageDialog(null,"Left Mouse Button");}
if (SwingUtilities.isRightMouseButton(e)) {JOptionPane.showMessageDialog(null,"Right Mouse Button");}
int selRow = ( (JTree)e.getComponent()).getRowForLocation(e.getX(), e.getY());
TreePath selPath = ( (JTree)e.getComponent()).getPathForLocation(e.getX(), e.getY());
if(selRow != -1) {
if(e.getClickCount() == 1) {
//mySingleClick(selRow, selPath);
JOptionPane.showMessageDialog(null,"Clicked Single Click path="+selPath);
}
else if(e.getClickCount() == 2) {
//myDoubleClick(selRow, selPath);
JOptionPane.showMessageDialog(null,"Clicked Double Click");
}
}
}
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isLeftMouseButton(e)) {JOptionPane.showMessageDialog(null,"Pressed Left Mouse Button");}
if (SwingUtilities.isRightMouseButton(e)) {JOptionPane.showMessageDialog(null,"Pressed Right Mouse Button");}
int selRow = ( (JTree)e.getComponent()).getRowForLocation(e.getX(), e.getY());
TreePath selPath = ( (JTree)e.getComponent()).getPathForLocation(e.getX(), e.getY());
if(selRow != -1) {
if(e.getClickCount() == 1) {
//mySingleClick(selRow, selPath);
//JOptionPane.showMessageDialog(null,"Pressed Single Click path="+selPath);
;
}
else if(e.getClickCount() == 2) {
//myDoubleClick(selRow, selPath);
JOptionPane.showMessageDialog(null,"Pressed Double Click"+e.getButton());
}
}
}
};
tree.addMouseListener(ml);
// Install a TreeModelListener that can update the table when
// tree changes. We use delayedFireTableDataChanged as we can
// not be guaranteed the tree will have finished processing
// the event before us.
treeTableModel.addTreeModelListener(new TreeModelListener() {
public void treeNodesChanged(TreeModelEvent e) {
delayedFireTableDataChanged();
}
public void treeNodesInserted(TreeModelEvent e) {
delayedFireTableDataChanged();
}
public void treeNodesRemoved(TreeModelEvent e) {
delayedFireTableDataChanged();
}
public void treeStructureChanged(TreeModelEvent e) {
delayedFireTableDataChanged();
}
});
}
// Wrappers, implementing TableModel interface.
public int getColumnCount() {
return treeTableModel.getColumnCount();
}
public
String getColumnName(int column) {
return treeTableModel.getColumnName(column);
}
public Class getColumnClass(int column) {
return treeTableModel.getColumnClass(column);
}
public int getRowCount() {
return tree.getRowCount();
}
protected Object nodeForRow(int row) {
TreePath treePath = tree.getPathForRow(row);
return treePath.getLastPathComponent();
}
public Object getValueAt(int row, int column) {
return treeTableModel.getValueAt(nodeForRow(row), column);
}
public boolean isCellEditable(int row, int column) {
return treeTableModel.isCellEditable(nodeForRow(row), column);
}
public void setValueAt(Object value, int row, int column) {
treeTableModel.setValueAt(value, nodeForRow(row), column);
}
/**
* Invokes fireTableDataChanged after all the pending events have been
* processed. SwingUtilities.invokeLater is used to handle this.
*/
protected void delayedFireTableDataChanged() {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
fireTableDataChanged();
}
});
}
}