1 files changed, 34 insertions, 0 deletions
diff --git a/docs/examples/observer/ColorLabel.java b/docs/examples/observer/ColorLabel.java
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+/*
+Copyright (c) Xerox Corporation 1998-2002.  All rights reserved.
+
+Use and copying of this software and preparation of derivative works based
+upon this software are permitted.  Any distribution of this software or
+derivative works must comply with all applicable United States export control
+laws.
+
+This software is made available AS IS, and Xerox Corporation makes no warranty
+about the software, its performance or its conformity to any specification.
+*/
+
+package observer;
+import java.awt.Color;
+import java.awt.Label;
+
+class ColorLabel extends Label {
+
+    ColorLabel(Display display) {
+        super();
+        display.addToFrame(this);
+    }
+
+    final static Color[] colors = {Color.red, Color.blue,
+                                   Color.green, Color.magenta};
+    private int colorIndex = 0;
+    private int cycleCount = 0;
+    void colorCycle() {
+        cycleCount++;
+        colorIndex = (colorIndex + 1) % colors.length;
+        setBackground(colors[colorIndex]);
+        setText("" + cycleCount);
+    }
+}