// ======================================================================
// [FUNC] Accepts input key from the user.
public void inputKey(String key) {
if (hasError) {
if (key == CXX || key == GRP) {
} else if (key == HEX || key == DEC || key == OCT || key == BIN) initFields();
else {
beep();
return;
}
} else if (lastKey == EQU && key != BSP) {
clear();
}
switch (key) {
case GRP:
groupDigits = !groupDigits;
if (hasError) return;
break;
case BIN:
case OCT:
case DEC:
case HEX:
prmScreenText = dec2rad(rad2dec(prmScreenText, numMode), key);
numMode = key;
clearPrmScreen = true;
break;
case MCX:
memValue = "0";
clearPrmScreen = true;
break;
case MRX:
if (memValue != "0") prmScreenText = dec2rad(memValue, numMode);
else {
prmScreenText = "0";
lastKey = DG0;
return;
}
clearPrmScreen = true;
break;
case MSX:
memValue = rad2dec(prmScreenText, numMode);
clearPrmScreen = true;
break;
case MPX:
memValue =
new BigDecimal(rad2dec(prmScreenText, numMode))
.add(new BigDecimal(memValue))
.toPlainString();
clearPrmScreen = true;
break;
case MMX:
memValue =
new BigDecimal(rad2dec(memValue, numMode))
.subtract(new BigDecimal(prmScreenText))
.toPlainString();
clearPrmScreen = true;
break;
case BSP:
if (clearPrmScreen) {
beep();
return;
} else if (prmScreenText.length() > 1)
prmScreenText = prmScreenText.substring(0, prmScreenText.length() - 1);
else if (prmScreenText != "0") prmScreenText = "0";
else if (expr[0].hasItems()) pop();
else beep();
break;
case CEX:
prmScreenText = "0";
break;
case CXX:
this.initFields();
break;
case AVG:
if (nset.size() > 0) {
BigDecimal bd = BigDecimal.ZERO;
for (int i = 0; i < nset.size(); i++) bd = bd.add((BigDecimal) nset.get(i));
prmScreenText =
dec2rad(
bd.divide(new BigDecimal(nset.size()), 32, BigDecimal.ROUND_HALF_EVEN)
.stripTrailingZeros()
.toPlainString(),
numMode);
} else throwError("Invalid Operation: Empty set");
clearPrmScreen = true;
break;
case SUM:
BigDecimal bd = BigDecimal.ZERO;
for (int i = 0; i < nset.size(); i++) bd = bd.add((BigDecimal) nset.get(i));
prmScreenText = dec2rad(bd.toPlainString(), numMode);
clearPrmScreen = true;
if (prmScreenText == "0") {
lastKey = DG0;
return;
}
break;
case LST:
if (prmScreenText != "0") nset.add(new BigDecimal(rad2dec(prmScreenText, numMode)));
else beep();
clearPrmScreen = true;
break;
case CLS:
nset.clear();
break;
case DG0:
if (clearPrmScreen) {
prmScreenText = "0";
clearPrmScreen = false;
} else if (prmScreenText != "0") prmScreenText += key;
else if (lastKey == DG0) beep();
break;
case DG1:
case DG2:
case DG3:
case DG4:
case DG5:
case DG6:
case DG7:
case DG8:
case DG9:
case DGA:
case DGB:
case DGC:
case DGD:
case DGE:
case DGF:
if (clearPrmScreen || prmScreenText == DG0) {
prmScreenText = key;
clearPrmScreen = false;
} else prmScreenText += key;
break;
case DOT:
if (clearPrmScreen || prmScreenText == DG0) {
prmScreenText = DG0 + DOT;
clearPrmScreen = false;
} else if (prmScreenText.indexOf(DOT) < 0) prmScreenText += key;
else beep();
break;
case BR1:
case BR2:
case SRT:
case CRT:
case REC:
case SQR:
case CUB:
case FCT:
case SIN:
case COS:
case TAN:
case LOG:
case NLG:
case INT:
case NEG:
case POW:
case MUL:
case DIV:
case MOD:
case ADD:
case SUB:
if (prmScreenText != "0" || isDigit(lastKey)) push(prmScreenText);
if (key.equals(BR1)) push(Expression.BRO);
else if (key.equals(BR2)) push(Expression.BRC);
else if (key.equals(SRT)) push(Expression.SRT);
else if (key.equals(CRT)) push(Expression.CRT);
else if (key.equals(REC)) push(Expression.REC);
else if (key.equals(SQR)) push(Expression.SQR);
else if (key.equals(CUB)) push(Expression.CUB);
else if (key.equals(FCT)) push(Expression.FCT);
else if (key.equals(SIN)) push(Expression.SIN);
else if (key.equals(COS)) push(Expression.COS);
else if (key.equals(TAN)) push(Expression.TAN);
else if (key.equals(LOG)) push(Expression.LOG);
else if (key.equals(NLG)) push(Expression.NLG);
else if (key.equals(INT)) push(Expression.INT);
else if (key.equals(NEG)) push(Expression.NEG);
else if (key.equals(POW)) push(Expression.POW);
else if (key.equals(MUL)) push(Expression.MUL);
else if (key.equals(DIV)) push(Expression.DIV);
else if (key.equals(MOD)) push(Expression.MOD);
else if (key.equals(ADD)) push(Expression.ADD);
else if (key.equals(SUB)) push(Expression.SUB);
prmScreenText = "0";
clearPrmScreen = false;
break;
case EQU:
if (prmScreenText != "0" || isDigit(lastKey) || !expr[0].hasItems()) push(prmScreenText);
try {
prmScreenText = stripZeros(expr[0].eval().toPlainString());
if (numMode == BIN) prmScreenText = dec2rad(prmScreenText, BIN);
else if (numMode == OCT) prmScreenText = dec2rad(prmScreenText, OCT);
else if (numMode == HEX) prmScreenText = dec2rad(prmScreenText, HEX);
clearPrmScreen = true;
} catch (SyntaxErrorException e) {
throwError("Syntax Error: " + e.getMessage());
} catch (InvalidInputException e) {
throwError("Input Error: " + e.getMessage());
} catch (UnknownOperatorException e) {
throwError("Unknown Operator: " + e.getMessage());
} catch (ArithmeticException e) {
throwError("Math Error: " + e.getMessage());
} catch (Exception e) {
throwError("Application Error: " + e.getMessage());
}
break;
}
lastKey = key;
}
