moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_disabled);
} else { // The selected bookmark is not in the first position.
// Enable the move bookmark up menu item.
moveBookmarkUpMenuItem.setEnabled(true);
// Set the icon according to the theme.
moveBookmarkUpMenuItem.setIcon(R.drawable.move_up_disabled);
} else { // The selected bookmark is not in the first position.
// Enable the move bookmark up menu item.
moveBookmarkUpMenuItem.setEnabled(true);
// Set the icon according to the theme.