Icon CHANGE in Node Renaming for JTree
HI all ,
In JTree, V can rename a DefaultMutableTreeNode , by pressing F2 or triple click .
By using the DefaultTreeCellRenderer ,
I applied icons also by -- tree.setCellRenderer(myCellRenderer);
But at the time of renaming , or when v press F2 ,
the icon is changed to default settings ( leafIcon / openIcon / closedIcon ).
How can I apply other Icons to nodes at the time of node renaming ?
Please help ..
Thanks
MyTreeCellRenderer treeCellRenderer = new MyTreeCellRenderer();
DefaultTreeCellEditor treeCellEditor = new MyTreeCellEditor(tree, treeCellRenderer);;
MyTreeCellEditorListener cellEditorListener = new MyTreeCellEditorListener();
treeModel = new DefaultTreeModel (rootNode);
tree = new JTree(treeModel);
treeCellEditor.addCellEditorListener(cellEditorListener);
tree.setCellEditor(treeCellEditor);
tree.setCellRenderer(treeCellRenderer);
I am renaming the leaf nodes and MyTreeCellRenderer class override the method
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus)
and set a different icon to the leaf nodes.
And when i am renaming a leaf node , the default ( leafIcon ) icon will come only to the renaming node at the time of renaming . When i hit the enter key . the default leafIcon will disappear and my customised icon will come .........
My question is that at the time of renaming ........ How v can getback the customised icon ?
thanks
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hi,
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i have done like this
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DefaultJTreeCellRenderer renderer = new DefaultJTreeCellRenderer();
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renderer.serCloseIcon(...);
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how to change the icons of the node when i click
thank youpublic class Test extends JFrame implements ActionListener {
private static final long serialVersionUID = 1L;
private JButton buttonCreate;
private JTree tree;
private DefaultMutableTreeNode defaultMutableTreeNode;
private DefaultTreeModel defaultTreeModel;
private int i;
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
layoutComponents();
setSize(400, 400);
setLocationRelativeTo(null);
setVisible(true);
private void layoutComponents() {
defaultMutableTreeNode = new DefaultMutableTreeNode("Root");
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tree = new JTree(defaultTreeModel);
tree.setRootVisible(false);
buttonCreate = new JButton("Create");
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DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer();
ImageIcon icon_close = new ImageIcon("./images/project_closed.gif");
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buttonCreate.addActionListener(this);
public static void main(String[] args) {
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public void actionPerformed(ActionEvent e) {
addElementToParent("Child" + i++);
private DefaultMutableTreeNode addElementToParent(Object theChild) {
return addElementToParent(defaultMutableTreeNode, theChild, true);
private DefaultMutableTreeNode addElementToParent(DefaultMutableTreeNode theParent, Object theChild, boolean shouldBeVisible) {
DefaultMutableTreeNode childNode = new DefaultMutableTreeNode(theChild);
if (theParent == null) {
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defaultTreeModel.insertNodeInto(childNode, theParent, theParent.getChildCount());
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}this is the code which i was trying to execute.
here i want to explain you is
when i click the node the icon should change to open_icon
when i click the other node the previous node icon should change to close_icon
how is this possible
null -
I can't seem to figure out how to change certain node icons in a JTree due to a 3 letter string. For example 2 nodes one saying "Intro" the other say "Edit - SEC" - the one with SEC has a different icon to "Intro"
MyRenderer class, here the code which is used to check the string of the node......
if(leaf && isSecuredFile(value)) {
setLeafIcon(leafSecuredIcon);
setToolTipText("This file is Secured Access Only");
else {
setToolTipText(null);
return this;
protected boolean isSecuredFile(Object value) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
NodeRecord nodeInfo = (NodeRecord)(node.getUserObject());
String nodeTitle = nodeInfo.NodeRecord;
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I tried the above piece of code, and it compiles with no errors but when I try to run the applet it comes up not initialised with the following....
java.lang.NoClassDefFoundError: MyRenderer
at firstPanel.<init>(firstPanel.java:99)
at JNavigator.jInit(JNavigator.java:55)
at JNavigator.init(JNavigator.java:40)
at sun.applet.AppletPanel.run(AppletPanel.java:344)
at java.lang.Thread.run(Thread.java:484)
However if I take out this code it works fine but I need to be able to assign different icons depending on the node title string. Therefore I need help.here's the whole class, if thats any help...
public class MyRenderer extends DefaultTreeCellRenderer {
ImageIcon leafIcon;
ImageIcon leafSecuredIcon;
public MyRenderer() {
leafIcon = new ImageIcon("Leaf.gif");
leafSecuredIcon = new ImageIcon("LeafSecured.gif");
public Component getTreeCellRendererComponent(JTree tree, Object val, boolean sel, boolean expand, boolean leaf, int row, boolean hasFocus) {
super.getTreeCellRendererComponent(tree, val, sel, expand, leaf, row, hasFocus);
// sets Icons
setLeafIcon(leafIcon);
setClosedIcon(new ImageIcon("Folder95C.gif"));
setOpenIcon(new ImageIcon("Folder95O.gif"));
// set Expansion icons to + -
ComponentUI treeUI = tree.getUI();
if(treeUI instanceof BasicTreeUI) {
((BasicTreeUI)treeUI).setExpandedIcon(new ImageIcon("minus.gif"));
((BasicTreeUI)treeUI).setCollapsedIcon(new ImageIcon("plus.gif"));
// decides who icon to use
if(leaf && isSecuredFile(value)) {
setLeafIcon(leafSecuredIcon);
setToolTipText("This file is Secured Access Only");
else {
setToolTipText(null);
return this;
protected boolean isSecuredFile(Object value) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
NodeRecord nodeInfo = (NodeRecord)(node.getUserObject());
String nodeTitle = nodeInfo.NodeRecord;
if(nodeTitle.indexOf("DOM") >= 0) {
return true;
return false;
} -
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|
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http://img140.imageshack.us/my.php?image=before6zj.jpg
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