JTreeTable - advance probelms? puting into tree a JCheckBox

Question

I carefuly read the example in the Swing Connection but the problem is as such presently i modified the component to view the tree in the Table with the aditional column named Selected) but the finla version is as such i would like to put JCheckBox into the tree component vied in the Table. So far I achieved it but it looks terrible (the renderer is cutting some space at the bottom of every table line of tree) what i did ? As shown in example when JTree component is returned I return my JCheckTree component.
My question is anybody seen working example with combination JCheckBoxTreeTable Component or knows how to write one ?
Any code snipets, examples i would be very greatful.
Mchmielewski

Answer 1

Hi.,
See whether it is useful... It can bring u checkbox in each node and you can select or deselect.
-sps :)
    private MyMutableTreeNode topNode                 = null;
    private MyMutableTreeNode mainSection         = null;
    private MyMutableTreeNode subSection          = null;
    private MyMutableTreeNode child               = null;
    private DefaultTreeModel treeModel            = null;
   // constructor..
   public void createTree()
        topNode = new MyMutableTreeNode("Root Node");
        treeModel = new DefaultTreeModel(topNode);
        createNodes(topNode);
        jTree1.setModel(treeModel);
        MyRenderer renderer = new MyRenderer();
        MyCellEditor myEditor = new MyCellEditor();
        jTree1.setCellRenderer(renderer);  // TO DRAW EACH NODE IN TREE.
        jTree1.setCellEditor(myEditor);    // TO EDIT OR DO ANY ACTIONS IN THE NODES.
        jTree1.setEditable(true);        // TO DO ANY ACTION IN THE NODES.
        jScrollPane1.setViewportView(jTree1);
   public void createNodes(DefaultMutableTreeNode tNode)
        mainSection = new MyMutableTreeNode("Parent 1");
        tNode.add(mainSection);
            subSection = new MyMutableTreeNode("Child 1");
            mainSection.add(subSection);    
                child = new MyMutableTreeNode("Leaf 1");
                subSection.add(child);       
            subSection = new MyMutableTreeNode("Child 2");
            mainSection.add(subSection);    
                child = new MyMutableTreeNode("Leaf 2");
                subSection.add(child);       
class MyMutableTreeNode extends DefaultMutableTreeNode implements ItemListener
        JCheckBox x;
        String title;
        public MyMutableTreeNode(String title)
            super(title);
            this.title = title;
            x = new JCheckBox(title);
            x.addItemListener(this);
            x.setBackground(Color.WHITE);
        public void itemStateChanged(ItemEvent ie)
            MyMutableTreeNode parentNode;       
            MyMutableTreeNode leaf;
            MyMutableTreeNode tempParent;
            MyMutableTreeNode tempRoot;
            if( ie.getStateChange() == ItemEvent.SELECTED )
                int count = getChildCount();
              //  System.out.println("Selected "+title);
                if( count != 0 )
                    this.getCheckBox().setSelected(true);
                    for ( int i = 0; i < count; i++)
                        parentNode = (MyMutableTreeNode)this.getChildAt(i);
                        if( parentNode.getChildCount() != 0 )
                            parentNode.getCheckBox().setSelected(true);
                            for ( int j = 0; j< parentNode.getChildCount(); j++ )
                                leaf = (MyMutableTreeNode)parentNode.getChildAt(j);
                                leaf.getCheckBox().setSelected(true);
                        else
                             parentNode.getCheckBox().setSelected(true);
                else
                    this.getCheckBox().setSelected(true);
                    //System.out.println("There are no Child Nodes for "+this.title);
            else if( ie.getStateChange() == ItemEvent.DESELECTED )
                int count = getChildCount();
                if( count != 0 )
                    this.getCheckBox().setSelected(false);
                    for ( int i = 0; i < count; i++)
                        parentNode = (MyMutableTreeNode)this.getChildAt(i);
                        if( parentNode.getChildCount() != 0 )
                            parentNode.getCheckBox().setSelected(false);
                            for ( int j = 0; j < parentNode.getChildCount(); j++ )
                                leaf = (MyMutableTreeNode)parentNode.getChildAt(j);
                                leaf.getCheckBox().setSelected(false);
                        else
                             parentNode.getCheckBox().setSelected(false);
                else
                    this.getCheckBox().setSelected(false);
            jTree1.repaint();  // THIS IS FASTER THAN jTree1.updateUI();
        public JCheckBox getCheckBox()
            return x;
    class MyRenderer implements TreeCellRenderer
        public MyRenderer()
        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus)
            return ((MyMutableTreeNode)value).getCheckBox();
    class MyCellEditor implements TreeCellEditor
        public void addCellEditorListener(javax.swing.event.CellEditorListener l)
        public void cancelCellEditing()
        public Object getCellEditorValue()
            return this;
        public Component getTreeCellEditorComponent(JTree tree, Object value, boolean isSelected, boolean expanded, boolean leaf, int row)
            return ((MyMutableTreeNode)value).getCheckBox();
        public boolean isCellEditable(java.util.EventObject isEditableEvt)
            if (isEditableEvt instanceof MouseEvent)
                MouseEvent me = (MouseEvent) isEditableEvt;
                if (me.getClickCount() == 1) 
                    return true;
            return false;
        public void removeCellEditorListener(javax.swing.event.CellEditorListener l)
        public boolean shouldSelectCell(java.util.EventObject anEvent)
            return true;
        public boolean stopCellEditing()
            return true;
}