source: trunk/examples/script/calculator/calculator.js@ 641

Function.prototype.bind = function() {
    var func = this;
    var thisObject = arguments[0];
    var args = Array.prototype.slice.call(arguments, 1);
    return function() {
        return func.apply(thisObject, args);
    }
}

//! [0]
function Calculator(ui)
{
    this.ui = ui;

    this.pendingAdditiveOperator = Calculator.NO_OPERATOR;
    this.pendingMultiplicativeOperator = Calculator.NO_OPERATOR;
    this.sumInMemory = 0;
    this.sumSoFar = 0;
    this.factorSoFar = 0;
    this.waitingForOperand = true;

    with (ui) {
        display.text = "0";

        zeroButton.clicked.connect(this.digitClicked.bind(this, 0));
        oneButton.clicked.connect(this.digitClicked.bind(this, 1));
        twoButton.clicked.connect(this.digitClicked.bind(this, 2));
        threeButton.clicked.connect(this.digitClicked.bind(this, 3));
        fourButton.clicked.connect(this.digitClicked.bind(this, 4));
        fiveButton.clicked.connect(this.digitClicked.bind(this, 5));
        sixButton.clicked.connect(this.digitClicked.bind(this, 6));
        sevenButton.clicked.connect(this.digitClicked.bind(this, 7));
        eightButton.clicked.connect(this.digitClicked.bind(this, 8));
        nineButton.clicked.connect(this.digitClicked.bind(this, 9));

        pointButton.clicked.connect(this, "pointClicked");
        changeSignButton.clicked.connect(this, "changeSignClicked");

        backspaceButton.clicked.connect(this, "backspaceClicked");
        clearButton.clicked.connect(this, "clear");