public void createPopupMenu() {
menu = new JPopupMenu();
for (int i = filenames.size() - 2, j = 0; i >= 0; i--, j++) {
menu.add((String) filenames.elementAt(i));
JMenuItem mi = (JMenuItem) menu.getComponent(j);
mi.setFont(new Font("Arial", Font.PLAIN, 11));
mi.addActionListener(this);
}
menu.pack();
// setPopupLocation(200, 200);
}
/** Code completion. */
private void complete() {
if (selected()) return;
// find first character
final int caret = editor.pos(), startPos = editor.completionStart();
final String prefix = string(substring(editor.text(), startPos, caret));
if (prefix.isEmpty()) return;
// find insertion candidates
final TreeMap<String, String> tmp = new TreeMap<>();
for (final Entry<String, String> entry : REPLACE.entrySet()) {
final String key = entry.getKey();
if (key.startsWith(prefix)) tmp.put(key, entry.getValue());
}
if (tmp.size() == 1) {
// insert single candidate
complete(tmp.values().iterator().next(), startPos);
} else if (!tmp.isEmpty()) {
// show popup menu
final JPopupMenu pm = new JPopupMenu();
final ActionListener al =
new ActionListener() {
@Override
public void actionPerformed(final ActionEvent ae) {
complete(ae.getActionCommand().replaceAll("^.*?\\] ", ""), startPos);
}
};
for (final Entry<String, String> entry : tmp.entrySet()) {
final JMenuItem mi = new JMenuItem("[" + entry.getKey() + "] " + entry.getValue());
pm.add(mi);
mi.addActionListener(al);
}
pm.addSeparator();
final JMenuItem mi = new JMenuItem(Text.INPUT + Text.COLS + prefix);
mi.setEnabled(false);
pm.add(mi);
final int[] cursor = rend.cursor();
pm.show(this, cursor[0], cursor[1]);
// highlight first entry
final MenuElement[] me = {pm, (JMenuItem) pm.getComponent(0)};
MenuSelectionManager.defaultManager().setSelectedPath(me);
}
}