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Re: Problems with BasicComboBoxEditor

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In article <87k43pw2dq.fsf@bitburger.home.felix>,
 Felix Natter <fnatter@gmx.net> wrote:

> I am using an editable ComboBox with BasicComboBoxEditor
> (minimal example attached) with GTK or Nimbus L&Fs:
> 
>   JComboBox comboBox = new JComboBox();
>   comboBox.setEditable(true);
>   comboBox.setEditor(new BasicComboBoxEditor());
> 
> I am having two problems with this:
> 
> #1. the first character in the editable combobox (which uses a
>     JTextField internally) cannot show the first letter completely (too
>     few left padding, see attached minimal example)
> 
> #2. The Background color of the editable combo box is white
>     (as opposed to normal comboboxes, which are grey, depending on L&F)
> 
> #1 can be worked around by using a MetalComboBoxEditor (without using
>    metal L&F) instead of the BasicComboBoxEditor. I think this solution
>    is satisfactory, but does there happen to be a better solution?
> 
> #2: Concerning the background color issue, I managed to change the
>     background color of the JTextField:

1. One approach is to use a compound Border with a suitable left margin:

    public ComboBoxEditorWithBGColor() {
        Color c = UIManager.getColor("ComboBox.background");
        editor.setBackground(c);
        editor.setBorder(BorderFactory.createCompoundBorder(
            editor.getBorder(), new EmptyBorder(0, 5, 0, 0)));
    }

2. Recycling the UI delegate's color(s) seems reasonable, but I'd urge 
minimal tinkering and maximal testing.

Note that you don't need the defaults or a new Color each time, and 
Swing GUI objects should be constructed and manipulated only on the 
event dispatch thread:

<http://download.oracle.com/javase/tutorial/uiswing/concurrency/initial.html>

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>

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Problems with BasicComboBoxEditor Felix Natter <fnatter@gmx.net> - 2012-02-14 22:06 +0100
  Re: Problems with BasicComboBoxEditor "John B. Matthews" <nospam@nospam.invalid> - 2012-02-14 22:15 -0500
    Re: Problems with BasicComboBoxEditor fnatter <fnatter@gmx.net> - 2012-02-18 10:45 -0800
      Re: Problems with BasicComboBoxEditor "John B. Matthews" <nospam@nospam.invalid> - 2012-02-18 21:44 -0500
  Re: Problems with BasicComboBoxEditor Lew <lewbloch@gmail.com> - 2012-02-15 09:45 -0800
    Re: Problems with BasicComboBoxEditor fnatter <fnatter@gmx.net> - 2012-02-18 10:46 -0800

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