/*
* 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 com.googlecode.lanterna.TerminalPosition;
/**
* This class recognizes character combinations which are actually a cursor position report. See
* Wikipedia's article on ANSI escape codes for more
* information about how cursor position reporting works ("DSR – Device Status Report").
*
* @author Martin, Andreas
*/
public class ScreenInfoCharacterPattern extends EscapeSequenceCharacterPattern {
public ScreenInfoCharacterPattern() {
useEscEsc = false; // stdMap and finMap don't matter here.
}
protected KeyStroke getKeyStrokeRaw(char first,int num1,int num2,char last,boolean bEsc) {
if (first != '[' || last != 'R' || num1 == 0 || num2 == 0 || bEsc) {
return null; // nope
}
if (num1 == 1 && num2 <= 8) {
return null; // nope: much more likely it's an F3 with modifiers
}
TerminalPosition pos = new TerminalPosition(num2, num1);
return new ScreenInfoAction(pos); // yep
}
public static ScreenInfoAction tryToAdopt(KeyStroke ks) {
switch (ks.getKeyType()) {
case CursorLocation: return (ScreenInfoAction)ks;
case F3: // reconstruct position from F3's modifiers.
int col = 1 + (ks.isAltDown() ? ALT : 0)
+ (ks.isCtrlDown() ? CTRL : 0)
+ (ks.isShiftDown()? SHIFT: 0);
TerminalPosition pos = new TerminalPosition(col,1);
return new ScreenInfoAction(pos);
default: return null;
}
}
}