如何使JSpinner对象的全部内容突出显示，以便在获得焦点时不需要删除用户输入？

Question

Not much to add to the Title question.

Here's what tabbing to the first box looks like, with cursor before the first character in the field, so that the user will have to delete the character if he wishes to enter his own month, day, or year number:

Here's what I'd like, when the field is tabbed to (or otherwise selected), so the user doesn't have to delete the character(s) presented if he wishes to enter his own year, etc.:

I can accomplish this for a JTextField like so, for example:

txtDateFrom.select(0,99);

But .select() isn't a method for JSpinner .

(I realize that this raises the question, "Why use a spinner?" but the obvious answer is that I'd like both methods of selecting to be available, as is common in design.)

(A much less pressing but related matter... I made an integer array of 100 year-dates [eg, 2014] named years and used SpinnerListModel(years) because when using the SpinnerNumberModel , a year would be displayed as 2,014. I can live with what I've done, but is there a less-brute-force way? There's no method containing "format" that I could find for this method.)

Answer 1

This works in Java 1.7.0_51, in Windows and Linux. I don't have the ability to test it in OS X.

JSpinner.DefaultEditor editor =
    (JSpinner.DefaultEditor) spinner.getEditor();

editor.getTextField().addFocusListener(new FocusAdapter() {
    @Override
    public void focusGained(FocusEvent event) {
        final JTextField textField = (JTextField) event.getComponent();
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                EventQueue.invokeLater(new Runnable() {
                    public void run() {
                        textField.selectAll();
                    }
                });
            }
        });
    }
});

Side note: Have you considered replacing your three JSpinners with a single JSpinner like this?

JSpinner spinner = new JSpinner(new SpinnerDateModel());
spinner.setEditor(new JSpinner.DateEditor(spinner, "MM/dd/yyyy"));

The up/down arrow buttons (and arrow keys) will change whichever field contains the text cursor.

It won't solve your focus issue, but you may decide that the issue is less of an issue.