Tree view with button action in toolwindow

Hello everyone!


I'm developing a plugin with a toolwindow. In my toolwindow, i must have a tree and buttons near of all child elements in the tree.

I create tree and added buttons. Once, i will show you how did i do.


Here is MyCellRenderer class

static class MyCellRenderer implements TreeCellRenderer, ActionListener {
    JLabel label;
    JButton button;
    JPanel renderer;

    DefaultTreeCellRenderer defaultRenderer = new DefaultTreeCellRenderer();
    Color backgroundSelectionColor;
    Color backgroundNonSelectionColor;

    public MyCellRenderer(){

        Border emptyBorder = BorderFactory.createEmptyBorder(2, 0, 2, 2);

        renderer = new JPanel(new GridLayout(1,6));
        label  = new JLabel(" ");
        label.setForeground(Color.black);
        label.setBorder(emptyBorder);
        button = new JButton();
        button.setIcon(defaultSuppress);



//any of the button code under below didn't work now
 button.setOpaque(false);
 button.setContentAreaFilled(false);
 button.setBorderPainted(false);
 button.setSize(16,16);
 

 renderer.add(label);
 renderer.add(button);
 }


@Override
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
 Component returnValue = null;
 if ((value != null) && (value instanceof DefaultMutableTreeNode)) {
 Object userObject = ((DefaultMutableTreeNode) value)
 .getUserObject();
 if (userObject instanceof Leaf) { // my tree gets elements title and icon from the Leaf class
 Leaf leafObj = (Leaf) userObject;
 label.setText(leafObj.getTitle());
 button.setIcon(leafObj.getButtonImage());

 renderer.setEnabled(tree.isEnabled());
 returnValue = renderer;
 }
 }

 if (returnValue == null) {

 returnValue = defaultRenderer.getTreeCellRendererComponent(tree,
 value, selected, expanded, leaf, row, hasFocus);
 }

 return returnValue;
 }
}

And I have one more class which i created the tree in that class. I didn't share it, cause it works fine with icon and name of element.

Here is my problem, I want to add actions to icons on the right side of every child element but i didn't.

When user clicks this buttons, one html page should open on the ide.

May someone help me, please? Thanks a lot from now!

Regards,

Melek