private static void insertQuestion(final JTextPane textPane, String str) {
Document doc = textPane.getDocument();
try {
doc.insertString(doc.getLength(), str, null);
final int pos = doc.getLength();
System.out.println(pos);
final JTextField field =
new JTextField(4) {
@Override
public Dimension getMaximumSize() {
return getPreferredSize();
}
};
field.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, Color.BLACK));
field.addFocusListener(
new FocusListener() {
@Override
public void focusGained(FocusEvent e) {
try {
Rectangle rect = textPane.modelToView(pos);
rect.grow(0, 4);
rect.setSize(field.getSize());
// System.out.println(rect);
// System.out.println(field.getLocation());
textPane.scrollRectToVisible(rect);
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
@Override
public void focusLost(FocusEvent e) {
/* not needed */
}
});
Dimension d = field.getPreferredSize();
int baseline = field.getBaseline(d.width, d.height);
field.setAlignmentY(baseline / (float) d.height);
SimpleAttributeSet a = new SimpleAttributeSet();
StyleConstants.setLineSpacing(a, 1.5f);
textPane.setParagraphAttributes(a, true);
textPane.insertComponent(field);
doc.insertString(doc.getLength(), "\n", null);
} catch (BadLocationException e) {
e.printStackTrace();
}
}
