Jtree and checkboxes again

hi there !
I'm trying to build a jtree with jcheckboxes.
But, how do I set/access the (selected) jcheckboxes ?
The selected nodes should be used to generate a DB-query ... how can I get an elegant mapping between the unique identfiers and the nodes ?
Currently I'm using the editor and renderer from
http://saloon.javaranch.com/2/001095.html
(bottom of the page)

reply #10 of the posted link shows you how you can create a JTree with JCheckBox...., if that isn't what you're looking for, I must have misunderstood your question!
;o)
V.V.

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Displaying a jtree with checkboxes and enabling some default checkboxes

I have created a jtree displaying a list of nodes hierarchically ,and created a checkbox for each node as well.
My problem is having created the jtree with checkboxes i need to have some of the nodes in the hierarchy checked by default on first launch of the gui.To do this i read a list of treepaths from a file and would want to traverse the tree and enable the node after finding it,which is what i am having issue with.
Your solution would be appreciated as i am a newbie and having got this far, feel like i need some back up :)
Thanks & Regards
Shashi

I have created a jtree displaying a list of nodes hierarchically ,and created a checkbox for each node as well.
My problem is having created the jtree with checkboxes i need to have some of the nodes in the hierarchy checked by default on first launch of the gui.To do this i read a list of treepaths from a file and would want to traverse the tree and enable the node after finding it,which is what i am having issue with.
Your solution would be appreciated as i am a newbie and having got this far, feel like i need some back up :)
Thanks & Regards
Shashi

Focus Problem with JTree and Menus

Hi all,
I have a problem with focus when editing a JTree and selecting a menu. The problem occurs when the user single clicks on a node, invoking the countdown to edit. If the user quickly clicks on a menu item, the focus will go to the menu item, but then when the countdown finishes, the node now has keyboard focus.
Below is code to reproduce the problem. Click on the node, hover for a little bit, then quickly click on the menu item.
How would I go about fixing the problem? Thanks!
import java.awt.Container;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
public class MyTree extends JTree {
     public MyTree(DefaultTreeModel treemodel) {
          setModel(treemodel);
          setRootVisible(true);
     public static void main(String[] args) {
          JFrame frame = new JFrame();
          JMenuBar bar = new JMenuBar();
          JMenu menu = new JMenu("Test");
          JMenuItem item = new JMenuItem("Item");
          menu.add(item);
          bar.add(menu);
          frame.setJMenuBar(bar);
          Container contentPane = frame.getContentPane();
          contentPane.setLayout(new GridLayout(1, 2));
          DefaultMutableTreeNode root1 = new DefaultMutableTreeNode("Root");
          root1.add(new DefaultMutableTreeNode("Root2"));
          DefaultTreeModel model = new DefaultTreeModel(root1);
          MyTree tree1 = new MyTree(model);
          tree1.setEditable(true);
          tree1.setCellEditor(
               new ComponentTreeCellEditor(
                    tree1,
                    new ComponentTreeCellRenderer()));
          tree1.setRowHeight(0);
          contentPane.add(tree1);
          frame.pack();
          frame.show();
import java.awt.FlowLayout;
import java.util.EventObject;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellEditor;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeCellEditor;
import javax.swing.tree.TreeCellRenderer;
public class ComponentTreeCellEditor
     extends DefaultTreeCellEditor
     implements TreeCellEditor {
     private String m_oldValue;
     private TreeCellRenderer m_renderer = null;
     private DefaultTreeModel m_model = null;
     private JPanel m_display = null;
     private JTextField m_field = null;
     private JTree m_tree = null;
     public ComponentTreeCellEditor(
          JTree tree,
          DefaultTreeCellRenderer renderer) {
          super(tree, renderer);
          m_renderer = renderer;
          m_model = (DefaultTreeModel) tree.getModel();
          m_tree = tree;
          m_display = new JPanel(new FlowLayout(FlowLayout.LEFT));
          m_field = new JTextField();
          m_display.add(new JLabel("My Label "));
          m_display.add(m_field);
     public java.awt.Component getTreeCellEditorComponent(
          JTree tree,
          Object value,
          boolean isSelected,
          boolean expanded,
          boolean leaf,
          int row) {
          m_field.setText(value.toString());
          return m_display;
     public Object getCellEditorValue() {
          return m_field.getText();
      * The edited cell should always be selected.
      * @param anEvent the event that fired this function.
      * @return true, always.
     public boolean shouldSelectCell(EventObject anEvent) {
          return true;
      * Only edit immediately if the event is null.
      * @param event the event being studied
      * @return true if event is null, false otherwise.
     protected boolean canEditImmediately(EventObject event) {
          return (event == null);
}

You can provide a cell renderer to the JTree to paint the checkBox.
The following code checks or unchecks the box with each click also:
_tree.setCellRenderer(new DefaultTreeCellRenderer()
private JCheckBox checkBox = null;
public Component getTreeCellRendererComponent(JTree tree,
                                                Object value,
                                                boolean selected,
                                                boolean expanded,
                                                boolean leaf,
                                                int row,
                                                boolean hasFocus)
    // Each node will be drawn as a check box
    if (checkBox == null)
      checkBox = new JCheckBox();
      checkBox .setBackground(tree.getBackground());
    DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
    checkBox.setText(node.getUserObject().toString());
    checkBox.setSelected(selected);
    return checkBox;
});

Is it possible to have sorting by group and checkboxes in the same ALV

Hi there,
Does anyone know whether it is possible to have sorting and group on one field in ALV and checkboxes set on another field in ALV?
eg.
Fieldname
===========
Name----
Text
Allowance----
Numeric -> Sort & Group
Verified----
Checkbox
How do I code it if it is possible to have grouping and check box all in one ALV. Meaning I want some data that are the same to merge using sort, while still having the checkbox available for my other field (Verified).
Thanks in advance.
Lawrence

hi,
GROUP BY clause is used on database tables with select statement.
sort is used on internal tables.
can u clearly explain y u need group by and sort on the same field.
if u are extracting from dbtable using grou by clause on a field, then no need to sort it again.
if u want sort u can do it by giveing "sort itab by field". thats not a problem.
now coming to check box.instead of using SLIS type field catalog, u use LVC type.
in LVC_S_LAYO, u can fine box_fname.
while defining layout, u declare a variable of type LVC_S_LAYO
AND GIVE BOX_FNAME = internal table field name

Using JTree with checkbox

Hi All,
I have a link for implementation of JTree with Checkbox
http://www.jroller.com/santhosh/date/20050610 He has implemented exactly what i want but i am unable to understand the use of all the classes. Really difficult to understand
So what i did was create a few objects with Checkbox class from AWT package and then added then to JTree using the DefaultMutableTreeStruture i got the tree working but not able to get the Checkboxex
Can any one explain me how i can implement this senario
I am trying different search creterias but unable to find a right detailed explanation to my query
Rgds
Aditya

where did you find DefaultMutableTreeStructure?

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hi friends,
can we edit the input payload and resubmit again from BPM worklist applications.
please provide me any links on this.
Thanks,

Hi ,
Dont know what you mean by resubmit but, you can surely modify the input data from inside BPM Worklist before submitting.
Follow Section 15.6.4 Specifying the Task Payload Data Structure in the below link :
http://download-uk.oracle.com/docs/cd/B31017_01/integrate.1013/b28981/workflow.htm#BABFICJF
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thanks
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I have a datagrid filled from a RO. There are a bunch of form fields outside of the Datagrid. When I press on a record the fields get filled in. That works perfect. One of the fields is a combobox. So I change some things in the fields and do an update. I update a DB and also use the itemUpdate to keep everything matching the screen to the DB. When I click to another record and then back the fields are changed and most all is perfect. The only thing I cannot do is get the Checkbox to Update. I press on the checkbox press an update button and the click to another record and then back and the checkbox does not show me if I selected "true" The DB updates just the Checkbox does not represent the data.
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                Plate:Plate.text,
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Thanks
George

On my original post has the update function that gathers the fields data to send to an update function, the second half of the function does the the itemUpdate. The BrandID and BrandID2 are for the comboboxs and the DrCheck and PsCheck are for the Checkboxs:
<mx:ComboBox id="BrandID" prompt="Select a Brand" dataProvider="{newBrands}" selectedItem="{BrandID.text}" labelField="label" width="150"
             themeColor="#73B9B9"/>
<mx:CheckBox label="Pending" id="DrCheck" themeColor="#73B9B9"/>
When the program first loads I can pick in a DG and it changes the ComboBox to match whats in the ArrayCollection. That part is working. The Checkbox does not. Seems like I have it right, just does not get the true false values back into the collection. So when I make a change like check a box and press update the DB updates but if I leave the row and then select back on the first record the checkbox is always false, unless I reload all the data.
Thanks
G

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I powered it off again and then commenced a Safe Boot. Same results as
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I powered it off again and then started it in Single User Mode. No
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After the preliminary startup code, the system began repeating the same
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dsFindDirNodes returned -14071, count = 0 count = 2147483646
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I ran fsck_hfs on the internal hard drive.
It returned a message that stated that I needed
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I ran fsck_hfs with several switches enabled, but
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I ran the TechTool Pro Performance --> Maintenance
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I think besides a reinstall, only DiskWarrior from Alsoft...
http://www.alsoft.com/DiskWarrior/
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Jtree and checkboxes again

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