Question

I am having trouble with the same thing as this guy:

MigLayout JTextArea is not shrinking when used with linewrap=true

and I used the solution described in one of the answers; to set the minimum size explicitly. This works fine if one places the JPanel which contains the JTextArea directly in a JFrame, and then resizes the window.

However, when placing the panel which contains the JTextArea inside a JScrollPane,
the same problem occurs again. Why is this, and how can one fix it?

Cheers

EDIT: An example

public class MiGTest2 extends JFrame{   
public MiGTest2(){
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel(new MigLayout("fillx, debug", "[fill]"));
    JTextArea textArea  = new JTextArea();
    textArea.setLineWrap(true);
    panel.add(textArea, "wmin 10");
    //panel.add(new JTextField());
    JScrollPane scrollPane = new JScrollPane(panel);
    //add(panel);
    add(scrollPane);
    pack();
}
public static void main(String[] args){
    new MiGTest2().setVisible(true);
}
}

If you uncomment //add(panel);, and comment add(scrollPane);, shrinking the window size will also shrink the JTextArea. That is, it does not work with a JScrollPane. Also note how the layout manager seems to flip out and starts “shaking” all its contents when shrinking the size of the window after first enlarging it

Answer 1

I had a very similar problem and following the answer in the mentioned question did not help me either. However, it did provide a valuable idea — the problem is in the width of the JTextArea with wrap enabled.

What worked for me was setting both minimum and preferred width at the component level using command width. For example, width 10:500:.