How to use

setBookmarkingEnabled

method

in

org.fife.ui.rtextarea.Gutter

  DemoRootPane() {
    textArea = createTextArea();
    setText("JavaExample.txt");
    textArea.setSyntaxEditingStyle(SYNTAX_STYLE_JAVA);

    scrollPane = new RTextScrollPane(textArea, true);
    Gutter gutter = scrollPane.getGutter();
    gutter.setBookmarkingEnabled(true);
    URL url = getClass().getResource("bookmark.png");
    gutter.setBookmarkIcon(new ImageIcon(url));
    getContentPane().add(scrollPane);
    ErrorStrip errorStrip = new ErrorStrip(textArea);
//errorStrip.setBackground(java.awt.Color.blue);
    getContentPane().add(errorStrip, BorderLayout.LINE_END);
    setJMenuBar(createMenuBar());
  }

@Test
public void getBookmarks_SomeBookmarks_NoIcon() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  gutter.setBookmarkingEnabled(true);
  // Both enabled state and icon are reuqired
  Assert.assertEquals(0, gutter.getBookmarks().length); // Non-null
}

@Test
public void testIsBookmarkingEnabled() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertFalse(gutter.isBookmarkingEnabled());
  gutter.setBookmarkingEnabled(true);
  Assert.assertTrue(gutter.isBookmarkingEnabled());
}

@Test
public void testSetBookmarkingEnabled() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertFalse(gutter.isBookmarkingEnabled());
  gutter.setBookmarkingEnabled(true);
  Assert.assertTrue(gutter.isBookmarkingEnabled());
}

@Test
public void testToggleBookmark() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  gutter.setBookmarkingEnabled(true);
  gutter.setBookmarkIcon(new TestIcon());
  Assert.assertTrue(gutter.toggleBookmark(1));
  Assert.assertFalse(gutter.toggleBookmark(1));
  Assert.assertTrue(gutter.toggleBookmark(1));
}

@Test
public void getBookmarks_SomeBookmarks() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  gutter.setBookmarkingEnabled(true);
  gutter.setBookmarkIcon(new TestIcon());
  Assert.assertTrue(gutter.toggleBookmark(1));
  Assert.assertTrue(gutter.toggleBookmark(2));
  Assert.assertEquals(2, gutter.getBookmarks().length); // Non-null
}

RTextScrollPane scrollPane = new RTextScrollPane(textArea, true);
scrollPane.setIconRowHeaderEnabled(true);
scrollPane.getGutter().setBookmarkingEnabled(true);