How to use

org.fife.ui.rtextarea.Gutter

constructor

@Test
public void getBookmarks_EmptyArray() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertEquals(0, gutter.getBookmarks().length); // Non-null
}

@Test
public void getBookmarks_SomeBookmarks_BookmarkingDisabled() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertEquals(0, gutter.getBookmarks().length); // Non-null
}

@Test(expected = BadLocationException.class)
public void testAddLineTrackingIcon_3Arg_Invalid() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Icon icon = new TestIcon();
  String tip = "tip text";
  gutter.addLineTrackingIcon(4, icon, tip);
}

@Test(expected = BadLocationException.class)
public void testAddOffsetTrackingIcon_3Arg_Invalid() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Icon icon = new TestIcon();
  String tip = "tip text";
  gutter.addOffsetTrackingIcon(1024, icon, tip);
}

@Test
public void testSetLineNumberFont() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Font font = new Font("Comic Sans", Font.PLAIN, 13);
  gutter.setLineNumberFont(font);
  Assert.assertEquals(font, gutter.getLineNumberFont());
  font = new Font("Arial", Font.ITALIC, 22);
  gutter.setLineNumberFont(font);
  Assert.assertEquals(font, gutter.getLineNumberFont());
}

@Test
public void testSetFoldIcons_Simple() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Icon collapsedIcon = new TestIcon();
  Icon expandedIcon = new TestIcon();
  gutter.setFoldIcons(collapsedIcon, expandedIcon);
  // Not much we can verify here
}

@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 testGetIconRowHeaderInheritsGutterBackground() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertFalse(gutter.getIconRowHeaderInheritsGutterBackground());
  gutter.setIconRowHeaderInheritsGutterBackground(true);
  Assert.assertTrue(gutter.getIconRowHeaderInheritsGutterBackground());
}

@Test
public void testGetShowCollapsedRegionToolTips() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertTrue(gutter.getShowCollapsedRegionToolTips());
  gutter.setShowCollapsedRegionToolTips(true);
  Assert.assertTrue(gutter.getShowCollapsedRegionToolTips());
}

@Test
public void testRemoveTrackingIcon_Simple() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Icon icon = new TestIcon();
  textArea.setSize(200, 200);
  GutterIconInfo info = gutter.addLineTrackingIcon(0, icon);
  Point p = new Point(0, 4);
  Assert.assertEquals(1, gutter.getTrackingIcons(p).length);
  gutter.removeTrackingIcon(info);
  Assert.assertEquals(0, gutter.getTrackingIcons(p).length);
}

@Test
public void testIsIconRowHeaderEnabled() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertFalse(gutter.isIconRowHeaderEnabled());
  gutter.setIconRowHeaderEnabled(true);
  Assert.assertTrue(gutter.isIconRowHeaderEnabled());
}

@Test
public void testSetIconRowHeaderInheritsGutterBackground() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertFalse(gutter.getIconRowHeaderInheritsGutterBackground());
  gutter.setIconRowHeaderInheritsGutterBackground(true);
  Assert.assertTrue(gutter.getIconRowHeaderInheritsGutterBackground());
}

@Test
public void testSetLineNumberStartIndex() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertEquals(1, gutter.getLineNumberingStartIndex());
  gutter.setLineNumberingStartIndex(24);
  Assert.assertEquals(24, gutter.getLineNumberingStartIndex());
}

@Test
public void testSetShowCollapsedRegionToolTips() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertTrue(gutter.getShowCollapsedRegionToolTips());
  gutter.setShowCollapsedRegionToolTips(true);
  Assert.assertTrue(gutter.getShowCollapsedRegionToolTips());
}

@Test
public void testGetActiveLineRangeColor() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Color color = Color.blue;
  gutter.setActiveLineRangeColor(color);
  Assert.assertEquals(color, gutter.getActiveLineRangeColor());
  color = Color.red;
  gutter.setActiveLineRangeColor(color);
  Assert.assertEquals(color, gutter.getActiveLineRangeColor());
}

@Test
public void testGetBookmarkIcon() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertNull(gutter.getBookmarkIcon());
  Icon icon = new TestIcon();
  gutter.setBookmarkIcon(icon);
  Assert.assertTrue(icon == gutter.getBookmarkIcon());
}

@Test
public void testGetLineNumberColor() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Color color = Color.red;
  gutter.setLineNumberColor(color);
  Assert.assertEquals(color, gutter.getLineNumberColor());
  color = Color.green;
  gutter.setLineNumberColor(color);
  Assert.assertEquals(color, gutter.getLineNumberColor());
}

@Test
public void testSetBorderColor() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Color color = Color.red;
  gutter.setBorderColor(color);
  Assert.assertEquals(color, gutter.getBorderColor());
  color = Color.green;
  gutter.setBorderColor(color);
  Assert.assertEquals(color, gutter.getBorderColor());
}

@Test
public void testSetFoldIndicatorEnabled() {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Assert.assertFalse(gutter.isFoldIndicatorEnabled());
  gutter.setFoldIndicatorEnabled(true);
  Assert.assertTrue(gutter.isFoldIndicatorEnabled());
  gutter.setFoldIndicatorEnabled(false);
  Assert.assertFalse(gutter.isFoldIndicatorEnabled());
}

@Test
public void testAddOffsetTrackingIcon_2Arg_Valid() throws Exception {
  RTextArea textArea = new RTextArea(PLAIN_TEXT);
  Gutter gutter = new Gutter(textArea);
  Icon icon = new TestIcon();
  GutterIconInfo gii = gutter.addOffsetTrackingIcon(17, icon);
  Assert.assertTrue(gii.getIcon() == icon);
  Assert.assertEquals(17, gii.getMarkedOffset());
  Assert.assertNull(gii.getToolTip());
  textArea.insert("a", 3);
  Assert.assertEquals(18, gii.getMarkedOffset());
}