/**
* Returns true if a string is a standard number, i.e not in scientific notation
*
* @param s
* @return
*/
private static boolean isStandardNumber(String s) {
// return if empty string
if (s == null || s.length() == 0) return false;
// test the first char for a digit, sign or decimal point.
Character c = s.charAt(0);
if (!(StringUtil.isDigit(c) || c == '.' || c == '-' || c == '+' || c == '\u2212')) {
return false;
}
// test the remaining chars for digits or decimal point
int decimalCount = 0;
for (int i = 1; i < s.length(); i++) {
c = s.charAt(i);
if (StringUtil.isDigit(c)) {
continue;
}
if (c == '.' && decimalCount == 0) {
decimalCount++;
continue;
}
return false;
}
return true;
}
/*
* auto-insert degree symbol when appropriate
*/
public void onKeyUp(KeyUpEvent e) {
// return unless digit typed (instead of !Character.isDigit)
if (e.getNativeKeyCode() < 48
|| (e.getNativeKeyCode() > 57 && e.getNativeKeyCode() < 96)
|| e.getNativeKeyCode() > 105) return;
AutoCompleteTextFieldW tc = inputPanel.getTextComponent();
String text = tc.getText();
// if text already contains degree symbol or variable
for (int i = 0; i < text.length(); i++) {
if (!StringUtil.isDigit(text.charAt(i))) return;
}
int caretPos = tc.getCaretPosition();
tc.setText(tc.getText() + Unicode.degree);
tc.setCaretPosition(caretPos);
}