public void testStyleChanged() {
final Style[] changed = new Style[1];
doc =
new DefaultStyledDocument() {
private static final long serialVersionUID = 1L;
@Override
protected void styleChanged(final Style style) {
changed[0] = style;
super.styleChanged(style);
}
};
styles = (StyleContext) doc.getAttributeContext();
final NamedStyle aStyle = (NamedStyle) doc.addStyle(STYLE_NAME, null);
assertEquals(0, styles.getChangeListeners().length);
assertEquals(0, aStyle.listenerList.getListenerCount());
final DocumentListener listener =
new DocumentListener() {
public void insertUpdate(DocumentEvent e) {}
public void removeUpdate(DocumentEvent e) {}
public void changedUpdate(DocumentEvent e) {}
};
doc.addDocumentListener(listener);
assertEquals(1, styles.getChangeListeners().length);
assertEquals(1, aStyle.listenerList.getListenerCount());
final NamedStyle anotherStyle = (NamedStyle) styles.addStyle("otherStyle", aStyle);
assertEquals(1, anotherStyle.listenerList.getListenerCount());
final NamedStyle nullStyle = (NamedStyle) styles.addStyle(null, null);
assertEquals(0, nullStyle.listenerList.getListenerCount());
assertNull(changed[0]);
aStyle.addAttribute("key", "value");
assertSame(aStyle, changed[0]);
doc.removeDocumentListener(listener);
assertEquals(0, styles.getChangeListeners().length);
assertEquals(0, aStyle.listenerList.getListenerCount());
assertEquals(0, anotherStyle.listenerList.getListenerCount());
}
