Tree Bean - how to select a node?

Can someone help how to select a node of the Tree based on the key programmatically?

Hi there..
I use a code like this..
[Bindable] public var selectedNode:XML;
[Bindable] public var mynewVar:String;
public function treeChanged(event:ListEvent) : void {
selectedNode = Tree(event.target).selectedItem as XML;
mynewVar = selectedNode.@nameofNode;
Cheers!

Similar Messages

How to select a node by name in a Tree?

Hi,
I require some help:
I want to select a Node of a Tree "myTree" by his displayed name.
I can select a Node by using "myTree.selectedIndex = idx". But how do I get the current Index of that Node?
Thx

Hi there..
I use a code like this..
[Bindable] public var selectedNode:XML;
[Bindable] public var mynewVar:String;
public function treeChanged(event:ListEvent) : void {
selectedNode = Tree(event.target).selectedItem as XML;
mynewVar = selectedNode.@nameofNode;
Cheers!

How to select a node in a JTree by name

I have a JTree in my program. I want to programmatically set one of these nodes selected by the name of the node. I do not know how to do this. I read the "How to use trees", but no help
Thanks!

I have a JTree and each node on the JTree has a string name. I also have a JEditorPane that lists all these names at start up. If the user clicks on one of these names, I want to catch the HyperlinkEvent and automatically select that node in the JTree.
So in short, I have the String name of the node that I want to programatically select.
Thanks!

How to select multiple nodes, which are not next to each other, in a tree?

The following code suppose to allow user select any combination of nodes (because of DISCONTIGUOUS_TREE_SELECTION), however, I can only select nodes which are next to each other. Can some one told me how to make this DISCONTIGUOUS_TREE_SELECTION work?
Thank you very much!
import javax.swing.*;
import javax.swing.tree.*;
public class TestTree extends JFrame {
public TestTree() {
super();
setBounds(0,0,500,500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JTree tree = new JTree();
getContentPane().add(tree);
TreeSelectionModel model = new DefaultTreeSelectionModel();
model.setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);
tree.setSelectionModel(model);
public static void main(String [] args) {
TestTree test = new TestTree();
test.show();

In Windows you hold down the Ctrl key while clicking on the nodes you want to select. Don't know the equivalent in other environments.

How to select the node in structure view from selected xml page item

Hi All,
I have imported the xml file. Now drag and dropped the root node in the documentt.Now i select a item from it.When i select an item, i need the node in the structure view to get selected.
In Indesign we have an menu option "Select in structure".
How to go about it?
Regards
Sakthi

Hi All,
I have imported the xml file. Now drag and dropped the root node in the documentt.Now i select a item from it.When i select an item, i need the node in the structure view to get selected.
In Indesign we have an menu option "Select in structure".
How to go about it?
Regards
Sakthi

How to select more than one node in tree

Hi
plz any one know how to select multi nodes in tree components ??
i wana select two employees or more from tree in order to know their informations how can i do that
10nx for help

i can select them from different parents that depends on what i want to select Like:
Admin-Sam
-Dinda
Users-David
-Marylinn
-Sandra
for ex: i wana choose Sam , Sandra & David to view thier times and OT on selecting them

How to Find the node or leaf node selected in Tree UI element:

Hi All,
I have a tree structure with three level design. We have a button, which will perform some operation on the specific node or leaf node on every level.
When we select any node or leaf node, we have action Onction getting called. But what we want is that, after we select the node or leaf node, we press a button below the tree design and perform some operation on the node selected.
But how to get information that on Application , which node or leaf node has been slected ?
Thanks
PG

Hi,
Found the solution.
Juts keep on reading all the nodes, system gives the complete path of the tree by using Lead selection and then we can use this path to peform the update operation on tree structure.
Thanks alot for the hint.
Regards
PG

How to select a tree node in JSF.

Hi All,
Sample code for JSF components having following lines to display a tree node:
<d:graph_treenode name="File-New" label="New 5"
icon="folder_16_pad.gif" action="demo-test.faces"/>
The above lines are showing that when we select the node it is invoking "demo-test.jsp". Whether it is possible to select multiple nodes similar to JTree(Swing) functionality?
Regards,
Sharath Reddy.

Hi again,
I am sorry, I cannot help in another way than looking at the documentation, because I have currently no JDK available here. If expandPath(...) doesn't work, you can try to get all the nodes of that path and expand them from the root node downwards, perhaps that will work.
greetings Marsian

How to eliminate empty node space from tree when rendered property is false

Hi
I have created a menu Tree for my ADF BC application while working in JDev 10.1.3.3.
I have tried two methods, first is by creating a menu model as discussed in example in ADF Developers Guide Book Section 19.2.1. Second by creating two view objects and creating the menu tree from my database table.
Depending on the logged in user I want to decide whether to show or not to show a menu tree option to the user. For this purpose I have implemented a function in a managed bean that calls a pl/sql stored procedure to decide if the user has access to a certain component. In first case I have set the rendered property of the menu item to #{menuTree.shown}, where shown is an attribute in the menu model whose value is properly set using java functions that call pl/sql function in turn. In second method, I have also tried to set the rendered property and calling a function that returns true or false based on if the user has access to the menu option.
Problem
When rendered property is returned as false, although the menu option is not displayed but an empty space is displayed in my tree and remaining nodes and/or menu options are displayed with an ugly gap.
How I can remove this unwanted gap, is there a way?
Regards,
Amir
1st option:
My menu tree:
<af:menuTree var="menuTree" value="#{menuModel.model}">
<f:facet name="nodeStamp">
<af:commandMenuItem text="#{menuTree.label}"
action="#{menuTree.getOutcome}"
_rendered="#{menuTree.shown}_"/>
</f:facet>
</af:menuTree>
2nd option:
<af:tree value="#{bindings.MainMenuView.treeModel}" var="node">
<f:facet name="nodeStamp">
<af:switcher facetName="#{node.hierType.name}">
<f:facet name="MainMenuViewNode">
<af:outputText value="#{node.Name}" _rendered="#{userInfo.mainNodeOk}"_ />
</f:facet>
<f:facet name="SubMenuViewNode">
<af:commandLink text="#{node.Name}" _rendered="#{userInfo.mainNodeOk}_">
<af:setActionListener from="#{node.destinationUrl}"
to="#{menuTree.getOutcome}"/>
</af:commandLink>
</f:facet>
</af:switcher>
Edited by: Amir Khan on Jan 12, 2009 8:54 PM

Hi,
if this reproduces in JDeveloper 10.1.3.4 then this sounds like a bug that you should file
Frank

How to not display nodes in a tree if Oracle roles are NOT used?

How to not display nodes in a tree if Oracle roles are NOT used?
We don't use Oracle DB roles to grant users access to Forms from the menu. We use a template and role system of our own. Basically a few tables with templates and roles.
We want to convert our normal Forms menu to a tree menu and one of our key requirements is that when the tree is populated ONLY nodes with programs (i.e. forms) he has been granted to execute is shown.
Since we don't use Oracle Roles how to do this in a tree?
I created a function to show/hide LEAF nodes, BUT problem is that there are sub-menu nodes showing even if the leaf-nodes under it has not being displayed. My function has suppressed it.
My tree query is like this:
SELECT
     t.status, LEVEL, t.label, t.icon, t.node VALUE
FROM
     tma_tree_menu t
WHERE
tma_authenticate_sys_chk_role(USER, t.node) = 1
CONNECT BY
     PRIOR t.node = t.master
START WITH
     t.MASTER IS NULL
ORDER SIBLINGS BY
t.position
The tma_authenticate_sys_chk_role will return 1 only if the user has access to the form under that node.
I tried the FTree functions in Forms but even that has nothing.
Any help would be greatly appreciated.
Edited by: Channa on Mar 17, 2010 6:49 AM

Would you share the source code? I guess what I need is how exactly you retreive the user credentials from the DB table and set that boolean variable.
and then how to condition it in UIX?

How can I select multiple nodes by standard

I want to ask how can I modify this example code to enable multiple selection, say if I select node1, system out display node1, then ctr+node2 selection. system out display node1&node2.
The code below, only display node1, then when I do ctr+node2 selection, system out still display node1.
I am quite new to JTree, so, please if there is anyone can give a solution?
Thanks
* A 1.4 application that requires the following additional files:
*   TreeDemoHelp.html
*    arnold.html
*    bloch.html
*    chan.html
*    jls.html
*    swingtutorial.html
*    tutorial.html
*    tutorialcont.html
*    vm.html
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.UIManager;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeSelectionModel;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import java.net.URL;
import java.io.IOException;
import java.awt.Dimension;
import java.awt.GridLayout;
public class TreeDemo extends JPanel
                      implements TreeSelectionListener {
    private JEditorPane htmlPane;
    private JTree tree;
    private URL helpURL;
    private static boolean DEBUG = false;
    //Optionally play with line styles. Possible values are
// "Angled" (the default), "Horizontal", and "None".
    private static boolean playWithLineStyle = false;
    private static String lineStyle = "Horizontal";
    //Optionally set the look and feel.
    private static boolean useSystemLookAndFeel = false;
    public TreeDemo() {
        super(new GridLayout(1,0));
        //Create the nodes.
        DefaultMutableTreeNode top =
            new DefaultMutableTreeNode("The Java Series");
        createNodes(top);
        //Create a tree that allows one selection at a time.
        tree = new JTree(top);
        tree.getSelectionModel().setSelectionMode
                (TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);---->Cause problem, when press Ctr to multiple select, always the first selected node is returned, which is shown in System out
        //Listen for when the selection changes.
        tree.addTreeSelectionListener(this);
        if (playWithLineStyle) {
            System.out.println("line style = " + lineStyle);
            tree.putClientProperty("JTree.lineStyle", lineStyle);
        //Create the scroll pane and add the tree to it.
        JScrollPane treeView = new JScrollPane(tree);
        //Create the HTML viewing pane.
        htmlPane = new JEditorPane();
        htmlPane.setEditable(false);
        initHelp();
        JScrollPane htmlView = new JScrollPane(htmlPane);
        //Add the scroll panes to a split pane.
        JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
        splitPane.setTopComponent(treeView);
        splitPane.setBottomComponent(htmlView);
        Dimension minimumSize = new Dimension(100, 50);
        htmlView.setMinimumSize(minimumSize);
        treeView.setMinimumSize(minimumSize);
        splitPane.setDividerLocation(100); //XXX: ignored in some releases
                                           //of Swing. bug 4101306
        //workaround for bug 4101306:
        //treeView.setPreferredSize(new Dimension(100, 100));
        splitPane.setPreferredSize(new Dimension(500, 300));
        //Add the split pane to this panel.
        add(splitPane);
    /** Required by TreeSelectionListener interface. */
    public void valueChanged(TreeSelectionEvent e) {
        DefaultMutableTreeNode node = (DefaultMutableTreeNode)
                           tree.getLastSelectedPathComponent();
        if (node == null) return;
        Object nodeInfo = node.getUserObject();
        System.out.print("\nMy selection node is"+nodeInfo.toString());
        if (node.isLeaf()) {
            BookInfo book = (BookInfo)nodeInfo;
            displayURL(book.bookURL);
            if (DEBUG) {
                System.out.print(book.bookURL + ": \n    ");
        } else {
            displayURL(helpURL);
        if (DEBUG) {
            System.out.println(nodeInfo.toString());
    private class BookInfo {
        public String bookName;
        public URL bookURL;
        public BookInfo(String book, String filename) {
            bookName = book;
            bookURL = TreeDemo.class.getResource(filename);
            if (bookURL == null) {
                System.err.println("Couldn't find file: "
                                   + filename);
        public String toString() {
            return bookName;
    private void initHelp() {
        String s = "TreeDemoHelp.html";
        helpURL = TreeDemo.class.getResource(s);
        if (helpURL == null) {
            System.err.println("Couldn't open help file: " + s);
        } else if (DEBUG) {
            System.out.println("Help URL is " + helpURL);
        displayURL(helpURL);
    private void displayURL(URL url) {
        try {
            if (url != null) {
                htmlPane.setPage(url);
            } else { //null url
          htmlPane.setText("File Not Found");
                if (DEBUG) {
                    System.out.println("Attempted to display a null URL.");
        } catch (IOException e) {
            System.err.println("Attempted to read a bad URL: " + url);
    private void createNodes(DefaultMutableTreeNode top) {
        DefaultMutableTreeNode category = null;
        DefaultMutableTreeNode book = null;
        category = new DefaultMutableTreeNode("Books for Java Programmers");
        top.add(category);
        //original Tutorial
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Tutorial: A Short Course on the Basics",
            "tutorial.html"));
        category.add(book);
        //Tutorial Continued
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Tutorial Continued: The Rest of the JDK",
            "tutorialcont.html"));
        category.add(book);
        //JFC Swing Tutorial
        book = new DefaultMutableTreeNode(new BookInfo
            ("The JFC Swing Tutorial: A Guide to Constructing GUIs",
            "swingtutorial.html"));
        category.add(book);
        //Bloch
        book = new DefaultMutableTreeNode(new BookInfo
            ("Effective Java Programming Language Guide",
          "bloch.html"));
        category.add(book);
        //Arnold/Gosling
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Programming Language", "arnold.html"));
        category.add(book);
        //Chan
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Developers Almanac",
             "chan.html"));
        category.add(book);
        category = new DefaultMutableTreeNode("Books for Java Implementers");
        top.add(category);
        //VM
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Virtual Machine Specification",
             "vm.html"));
        category.add(book);
        //Language Spec
        book = new DefaultMutableTreeNode(new BookInfo
            ("The Java Language Specification",
             "jls.html"));
        category.add(book);
     * Create the GUI and show it. For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
    private static void createAndShowGUI() {
        if (useSystemLookAndFeel) {
            try {
                UIManager.setLookAndFeel(
                    UIManager.getSystemLookAndFeelClassName());
            } catch (Exception e) {
                System.err.println("Couldn't use system look and feel.");
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);
        //Create and set up the window.
        JFrame frame = new JFrame("TreeDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Create and set up the content pane.
        TreeDemo newContentPane = new TreeDemo();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
}

you can use the method getSelectionPaths() in the class JTree. It will return an array of all the TreePaths you have selected. Then on each of the TreePath you got use the method getLastPathComponent() to get the nodes which you have selected.
Hope this solves your problem.

How to edit the node value of a tree in webdynpro java

Hi ALL
I have Tree UI element where i got displayed all the nodes by calling the BAPI
Now my requirement is when i put the cursor at any node in the Tree struture then on click of insert button i need to insert the new node with the text , the user has to be option to give new text for the new node dynamically , so while adding the new node in a tree the tree has to choose the text for new node , like how to edit the node of a tree to add new text.
If any one can send the sample code on the same then it would be great help to me.
Similar requirement like in table UI Like however we are adding the new row in a table when we click on the insert button then cursor will go to that new row in a table where user can enter his details in the table.. now i am looking for the same requirement in a Tree UI element.
is it possible the same requirement in tree UI element in webdynpro for Java??
Thanks
kallki reddy

Hi kallki reddy
In general I think this is not possible in the form you'd like. It seems the Tree control is read-only thing always. It cannot provide editing capabilities.
Table is different thing. You can select within many different cell editors including Input Fields.
I guess that you scenario could be implemented not with Tree control, but with Table with Master Column. The master column allows to bring up a hierarchy into a plain table. So it's just a tree inside a table.
Here you can find further details: [TreeByNestingTableColumn API|http://help.sap.com/saphelp_nw70ehp1/helpdata/en/92/12a74046033913e10000000a155106/content.htm]
BR, Siarhei

How to select multiple records from a TREE in the table

HI,
I have a tree structure which is in the table.When I open the node of the tree,all the subnodes are coming as one-one records in the table.I want to slect multiple record from this table.I applied onLeadSelect for this table,I can select only 1 record from the table.
Can any one plz suggest me how to select multiple records from the table so that I can get all the data of those selected record.
Regards
-Sandip

Rashmi/Kukku,
First of all, Thanks for your help!
Is there any other way in which we can access tables other than using BAPIs or RFCs?
In my case, there is a table structure which has to be updated with values after validating a key. i don't think there is any RFC available now. do i need to create bapi/rfc for that?
Krishna Murthy

How to allow multiple selection of nodes in a JTree

How to allow multiple selection of nodes in a JTree ?
Thanks
S.Satish

By default when you create new instance og JTree the selection model is multiple selection. And if you want to change it you use next:
tee.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
or
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.CONTIGUOUS_TREE_SELECTION);
or
tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION);
Hope will help!

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.

Tree Bean - how to select a node?

Similar Messages

Maybe you are looking for