/*
* This file is part of lanterna (http://code.google.com/p/lanterna/).
*
* lanterna is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see .
*
* Copyright (C) 2010-2015 Martin
*/
package com.googlecode.lanterna.input;
import java.util.List;
/**
* Character pattern that matches characters pressed while ALT key is held down
*
* @author Martin, Andreas
*/
public class AltAndCharacterPattern implements CharacterPattern {
@Override
public Matching match(List seq) {
int size = seq.size();
if (size > 2 || seq.get(0) != KeyDecodingProfile.ESC_CODE) {
return null; // nope
}
if (size == 1) {
return Matching.NOT_YET; // maybe later
}
if ( Character.isISOControl(seq.get(1)) ) {
return null; // nope
}
KeyStroke ks = new KeyStroke(seq.get(1), false, true);
return new Matching( ks ); // yep
}
}