How to display the tree nodes distinctivly.

Hay all,
Frnds , i am facing a problem. I have created a tree whose each node consisted of a checkbox and a label. For that i have used DefaultMutableTreeNodes for tree nodes and a TreeCellRenderer. Is there any method or way to display some nodes distinctively(may be in different color or something else). Plz tell me soon its very urgent.

Hi Jürgen,
See http://help.sap.com/saphelp_nw04/helpdata/en/44/6aaf92f5a23672e10000000a114a6b/frameset.htm
Only Worksets and Roles are not described, anyhow, doing a bit research via decompiling or just by searching on SDN will bring you the needed extra info; just as an example for roles access: https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/6112ecb7-0a01-0010-ef90-941c70c9e401
Hope it helps
Detlev

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Hi there,
please refer to the document "Installing Patch 4 for Enterprise Portal 6.0 SP2" (EP6SP2Patch4_install_v5.pdf) to be found on Service Marketplace; there: "6.3 Navigation Enhancements", there: "6.3.2 Default Entry for Folder" & "6.3.4 DTN: Clicking Folder Name Launches First Node".
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public Object getRoot() {
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I also added listener class:
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Object node = e.getTreePath().getLastPathComponent();
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try {
int index = e.getChildIndices()[0];
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//node = node.getChildAt(index);
node = new DomToTreeModelAdapter(element).getChild(node, index);
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What is the problem?
Thank you in advance for any help.

I ment give us a runnable code that demenstrates your problem, try and duplicate it... Dont post use a 5000line class, just one that shows the problem,
ie create a new class that just does what your one is supose to with out all the bits and pieces, if if works then work from there, else post that code.
ps did you also read the code formating tags

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How to hide a tree node from the GUI but still keep it in the tree model?

Hi, All
I used a JTree in my project in which I have a DefaultTreeModel to store all the tree structure and a JTree show it on the screen. But for some reason, I want to hide some of the nodes from the user, but I don't want to remove them from the tree model because later on I still need to use them.
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Here's an example using a derivation of DefaultTreeModel that shows (or does not show) two types of Sneech (appologies to the good Dr Zeus) by overiding two methods on the model.
Now, there are many things wrong with this example (using instanceof, for example), but it's pretty tight and shows one way of doing what you want.
Note: to make it useful, you''d have to change the implementation of setShowStarBelliedSneeches() to do something more sophisticated than simply firing a structure change event on the root node. You'd want to find all the star bellied sneech nodes and call fireTreeNodesRemoved(). That way the tree would stay expanded rather than collapse as it does now.
import javax.swing.JTree;
import javax.swing.JScrollPane;
import javax.swing.JOptionPane;
import javax.swing.JCheckBox;
import javax.swing.JPanel;
import javax.swing.tree.TreePath;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.DefaultMutableTreeNode;
import java.awt.Dimension;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;
class FilteredTree
     private class PlainBelliedSneech {
          public String toString() { return "Plain Bellied Sneech"; }
     private class StarBelliedSneech {
          public String toString() { return "Star Bellied Sneech"; }
     private class FilteredTreeModel
          extends DefaultTreeModel
          private boolean mShowStarBelliedSneeches= true;
          private DefaultMutableTreeNode mRoot;
          FilteredTreeModel(DefaultMutableTreeNode root)
               super(root);
               mRoot= root;
          public Object getChild(Object parent, int index)
               DefaultMutableTreeNode node=
                    (DefaultMutableTreeNode) parent;
               if (mShowStarBelliedSneeches)
                    return node.getChildAt(index);
               int pos= 0;
               for (int i= 0, cnt= 0; i< node.getChildCount(); i++) {
                    if (((DefaultMutableTreeNode) node.getChildAt(i)).getUserObject()
                                        instanceof PlainBelliedSneech)
                         if (cnt++ == index) {
                              pos= i;
                              break;
               return node.getChildAt(pos);
          public int getChildCount(Object parent)
               DefaultMutableTreeNode node=
                    (DefaultMutableTreeNode) parent;
               if (mShowStarBelliedSneeches)
                    return node.getChildCount();
               int childCount= 0;
               Enumeration children= node.children();
               while (children.hasMoreElements()) {
                    if (((DefaultMutableTreeNode) children.nextElement()).getUserObject()
                                        instanceof PlainBelliedSneech)
                         childCount++;
               return childCount;
          public boolean getShowStarBelliedSneeches() {
               return mShowStarBelliedSneeches;
          public void setShowStarBelliedSneeches(boolean showStarBelliedSneeches)
               if (showStarBelliedSneeches != mShowStarBelliedSneeches) {
                    mShowStarBelliedSneeches= showStarBelliedSneeches;
                    Object[] path= { mRoot };
                    int[] childIndices= new int[root.getChildCount()];
                    Object[] children= new Object[root.getChildCount()];
                    for (int i= 0; i< root.getChildCount(); i++) {
                         childIndices= i;
                         children[i]= root.getChildAt(i);
                    fireTreeStructureChanged(this, path, childIndices, children);
     private FilteredTree()
          final DefaultMutableTreeNode root= new DefaultMutableTreeNode("Root");
          DefaultMutableTreeNode parent;
          DefaultMutableTreeNode child;
          for (int i= 0; i< 2; i++) {
               parent= new DefaultMutableTreeNode(new PlainBelliedSneech());
               root.add(parent);
               for (int j= 0; j< 2; j++) {
                    child= new DefaultMutableTreeNode(new StarBelliedSneech());
                    parent.add(child);
                    for (int k= 0; k< 2; k++)
                         child.add(new DefaultMutableTreeNode(new PlainBelliedSneech()));
               for (int j= 0; j< 2; j++)
                    parent.add(new DefaultMutableTreeNode(new PlainBelliedSneech()));
               parent= new DefaultMutableTreeNode(new StarBelliedSneech());
               root.add(parent);
               for (int j= 0; j< 2; j++) {
                    child= new DefaultMutableTreeNode(new PlainBelliedSneech());
                    parent.add(child);
                    for (int k= 0; k< 2; k++)
                         child.add(new DefaultMutableTreeNode(new StarBelliedSneech()));
               for (int j= 0; j< 2; j++)
                    parent.add(new DefaultMutableTreeNode(new StarBelliedSneech()));
          final FilteredTreeModel model= new FilteredTreeModel(root);
          JTree tree= new JTree(model);
tree.setShowsRootHandles(true);
tree.putClientProperty("JTree.lineStyle", "Angled");
          tree.setRootVisible(false);
          JScrollPane sp= new JScrollPane(tree);
          sp.setPreferredSize(new Dimension(200,400));
          final JCheckBox check= new JCheckBox("Show Star Bellied Sneeches");
          check.setSelected(model.getShowStarBelliedSneeches());
          check.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    model.setShowStarBelliedSneeches(check.isSelected());
          JPanel panel= new JPanel(new BorderLayout());
          panel.add(check, BorderLayout.NORTH);
          panel.add(sp, BorderLayout.CENTER);
          JOptionPane.showOptionDialog(
               null, panel, "Sneeches on Beeches",
               JOptionPane.DEFAULT_OPTION,
               JOptionPane.PLAIN_MESSAGE,
               null, new String[0], null
          System.exit(0);
     public static void main(String[] argv) {
          new FilteredTree();

How to highlight a tree node programmatically

Problem
=====
Just like a typical management software, I have a navigation tree presenting a list of objects (let's say toasters) on the left panel. The content panel on the right side presents the details of a toaster, when the user selects the toaster on the navigation tree. On the toaster details panel, I would like to have a hyper link referring to another toaster - associated to the selected toaster. On clicking on the hyperlink, I would like to display the details of the associated toaster and the navigation tree node for the associated toaster being highlighted.
For example, BUI presents the following now:
+ Toasters | Toaster 1 Details [Refresh]
+ <toaster1> |
+ toaster2 | ... toaster3
+ toaster3 |
toaster1 is selected on the navigation tree. The contents panel displays Toaster 1 details, which has a hyper link for toaster3.
When the user click on toster3 on the contents panel, I would like to see the following
+ Toasters | Toaster 3 Details [Refresh]
+ toaster1 |
+ toaster2 | ...
+ <toaster3> |
My Trial
=====
ADF Rich Client 11.1.2.3 is used for my development.
Jspx code for the navigation tree looks like this:
<af:tree id="navTree" ...>
<f:facet name="nodeStamp">
<af:panelGroupLayout id="nodePgl">
<af:switcher facetName="#{stamp.outcome!=null?'actnode':'noactnode'}" ...>
<f:facet name="actnode">
<af:commandLink id="leafLink" text="#{stamp.label}" action="#{stamp.actionOutcome}">
<af:setActionListener from="#{stamp.key}" to="#{treeHandler.selectedMenuItem}"/>
</af:commandLink>
</f:facet>
<f:facet name="noactnode">
<af:outputText id="notLeafText" value="#{stamp.label}"/>
</f:facet>
</af:switcher>
</af:panelGroupLayout>
</f:facet>
</af:tree>
The hyper link on the contents panel looks like this:
<af:iterator var="toaster" value="#{toastData.toasters}">
<af:commandLink text="#{toaster}" action="#{toasterHandler.goToToaster}">
<f:param name="toasterId" value="#{toaster}"/>
<af:setActionListener from="#{toaster}" to="#{treeHandler.selectedToaster}"/>
</af:commandLink>
</af:iterator>
I got some tips from this forum (cannot find thread at the moment) and implemented the treeHandler.selectedToaster method as follows:
// getSelectionState returns selStat, which is instantiated like the following:
// RowKeySet selStat = new RowKeySetTreeImpl();
// TreeModel model = (TreeModel) menuModel.getWrappedData();
// selStat.setCollectionModel(model);
// selStat.setContained(true);
RowKeySet rowKeySet = getSelectionState();
rowKeySet.removeAll();
// synthesize the rowKey for the selected toaster
// if the toaster found in the toaster node list,
// rowKey should look like [0, <rowIdx of toaster>]
ArrayList<Integer> rowKey = new ArrayList<Integer>();
rowKey.add(0);
rowKey.add(new Integer(rowIdx));
TreeModel model = (TreeModel) menuModel.getWrappedData();
model.setRowKey(rowKey);
model.setRowIndex(rowIdx);
rowKeySet.add();
This seems to work most of times except when I refresh the contents details panel using partial page rendering.
I get NullPointerException on the call to rowKeySet.removeAll().
Caused by: java.lang.NullPointerException
at org.apache.myfaces.trinidad.model.RowKeySetTreeImpl._selectAll(RowKeySetTreeImpl.java:459)
at org.apache.myfaces.trinidad.model.RowKeySetTreeImpl.removeAll(RowKeySetTreeImpl.java:146)
In my observation, this NPE happens when rowKeySet.size() returns 1 but rowKeySet.iterator() does not return any entries.
I suspect this is a bug on RowKeySetTreeImpl but not sure.
Help Need
=======
1. What is the reasonably right way to highlight the tree node for my problem?
2. If my trial is one way to do it, how can I get around the NPE? I cannot change ADF Rich Client library at this point.
Any help/suggestion/advise would be appreciated.
Thanks,
Jeongtae

I did this, to programmatically expand a tree node, you can try the same and set the row key to highlight.
private RowKeySet disclosedTreeRowKeySet = new RowKeySetImpl();
public void rowDisclosureListener(RowDisclosureEvent rowDisclosureEvent)
Iterator added = rowDisclosureEvent.getAddedSet().iterator();
if (added!=null)
while (added.hasNext())
Object rowKey = added.next();
//disclosedTreeRowKeySet.clear();
List path = (List)rowKey;
for( int i=0; i< path.size(); i++ )
List<Object> nodePath = new ArrayList<Object>();
for( int j=0; j<i; j++ )
nodePath.add( path.get( j ) );
disclosedTreeRowKeySet.add( nodePath );
disclosedTreeRowKeySet.add( rowKey );
System.out.println( "disclosed Keys...... " + disclosedTreeRowKeySet );
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if (sourceTreeTable != null) {
Iterator added = (Iterator)addedObj.iterator();
if (added!=null)
while (added.hasNext())
Object rowKey = added.next();
List path = (List)rowKey;
for( int i=0; i< path.size(); i++ )
List<Object> nodePath = new ArrayList<Object>();
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nodePath.add( path.get( j ) );
disclosedTreeRowKeySet.add( nodePath );
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Hi,
I have the same problem and would realy like to know how to do this´, using ADF Faces 11G with the up to date JDeveloper.
I've found some blog entries in the web showing how to do this with a POJO-based approach. They insert Data programmatically based on a view object's result set, reading all data and inserting the data to the POJO.
However, I like to
1) Drag-And-Drop the data-control (based on one master and one details - view object and a view link) to a page and add it as tree table
2) Get the folder icon only displayed when there are children
3) get the last child (=leaf) displayed without folder icon.
To make this possible, we should somehow extend the TreeModel Class and override the function isContainer
@Override
public boolean isContainer() {
if (getRowData() != null) {
     MyRowImpl value = (MyRowImpl) getRowData();
    if (value.getChildValues() != null &&
       value.getChildValues().size() > 0) {
      return true;
    return false;
}Can somehow please give me a hint how to extend the tree model base class (What class?) and how to get the framework to use this model class?
Maybe there is a sample application for 11g somewhere?
Thanks,
Stefan
Edited by: Stefan1979 on 04.11.2009 18:10

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duplicate
How to get a Tree Node Value when a Tree is Expanded

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Hi friends,
Some text in the tree node were not visible fully.
example : instead of documentation, it just displays doc...
instead of Library, it just displays lib....
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Thanks in advance.

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hi,
Can anyone tell me , Is it possible to disable the tree nodes?How??so that user cannot perform any action
on tree nodes i.e, expanding the tree node or double clicking the tree node.
Thankx in advance,
Manish.

hi,
Can anyone tell me , Is it possible to disable the tree nodes?How??so that user cannot perform any action
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Thankx in advance,
Manish.

How to select a tree node in JSF.

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Sample code for JSF components having following lines to display a tree node:
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Regards,
Sharath Reddy.

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greetings Marsian

In sap scripts how to display the driver program

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Hi Arun,
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How to display the tree nodes distinctivly.

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