/**
* Sets a mnemomic for the specified button.
*
* @param b button
* @param mnem mnemonics that have already been assigned
*/
public static void setMnemonic(final AbstractButton b, final StringBuilder mnem) {
// do not set mnemonics for Mac! Alt+key used for special characters.
if (Prop.MAC) return;
// find and assign unused mnemomic
final String label = b.getText();
final int ll = label.length();
for (int l = 0; l < ll; l++) {
final char ch = Character.toLowerCase(label.charAt(l));
if (!letter(ch) || mnem.indexOf(Character.toString(ch)) != -1) continue;
b.setMnemonic(ch);
mnem.append(ch);
break;
}
}
@Override
public void refresh(final GUI main, final AbstractButton button) {
button.setEnabled(text.marked());
}
@Override
public void refresh(final GUI main, final AbstractButton button) {
button.setEnabled(clip() != null);
}
@Override
public void refresh(final GUI main, final AbstractButton button) {
button.setEnabled(!undo.last());
}