1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/* A silly little calculator implemented in Javascript (Rhino) using
Java components for the UI. */
f = new java.awt.Frame ("BSH Calculator (js)");
bsf.addEventListener (f, "window", "windowClosing",
"java.lang.System.exit (0);");
f1 = new java.awt.TextField (20);
bsf.addEventListener (f1, "action", null, "doMath ()");
f2 = new java.awt.TextField (20);
bsf.addEventListener (f2, "text", null, "doMath ()");
p = new java.awt.Panel ();
p.setLayout (new java.awt.GridLayout (2, 2));
p.add (new java.awt.Label ("Enter Operand"));
p.add (f1);
p.add (new java.awt.Label ("Enter Operand"));
p.add (f2);
f.add ("North", p);
f.add ("Center", new java.awt.Label ("Results:"));
p = new java.awt.Panel ();
p.setLayout (new java.awt.GridLayout (4, 2));
p.add (new java.awt.Label ("Sum"));
p.add (sum = new java.awt.TextField (20))
p.add (new java.awt.Label ("Difference"));
p.add (diff = new java.awt.TextField (20));
p.add (new java.awt.Label ("Product"));
p.add (prod = new java.awt.TextField (20));
p.add (new java.awt.Label ("Quotient"));
p.add (quo = new java.awt.TextField (20));
f.add ("South", p);
f.pack ();
f.show ();
f.toFront ();
function getField (f) {
t = f.getText ();
return (t == "") ? 0 : java.lang.Integer.parseInt (t);
}
function doMath () {
n1 = getField (f1);
n2 = getField (f2);
sum.setText ((n1 + n2) + "");
diff.setText ((n1 - n2) + "");
prod.setText ((n1 * n2) + "");
quo.setText ((n1 / n2) + "");
}
|
