01: /*
02: *
03: * Copyright (c) 2007, Sun Microsystems, Inc.
04: *
05: * All rights reserved.
06: *
07: * Redistribution and use in source and binary forms, with or without
08: * modification, are permitted provided that the following conditions
09: * are met:
10: *
11: * * Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * * Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * * Neither the name of Sun Microsystems nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31: */
32: package gauge;
33:
34: import javax.microedition.lcdui.*;
35:
36: /**
37: * This class implements a non-interactive gauge control
38: * that moves automatically, between the min and max values.
39: *
40: * @version 2.0
41: */
42: public class NonInteractiveGaugeRunnable extends Gauge implements
43: Runnable {
44: private int maxValue = 10;
45:
46: /**
47: * This member indicates the number of units to move per
48: * iteration. It is set to -1 when we reach a 100 and 1
49: * when we reach 0.
50: */
51: private int delta = 1;
52: private boolean done = false;
53:
54: /**
55: * The constructor initializes the gauge.
56: */
57: public NonInteractiveGaugeRunnable(String label, int maxValue,
58: int initialValue) {
59: super (label, false, maxValue, initialValue);
60: this .maxValue = maxValue;
61: new Thread(this ).start();
62: }
63:
64: /**
65: * This method moves the gauge left and right.
66: */
67: public void run() {
68: while (!done) {
69: // decide whether the gauge should start moving
70: // backwards or forwards.
71: int newValue = getValue() + delta;
72:
73: if (newValue == maxValue) {
74: delta = -1;
75: } else if (newValue == 0) {
76: delta = 1;
77: }
78:
79: setValue(newValue);
80:
81: try {
82: Thread.currentThread().sleep(1000);
83: } catch (InterruptedException err) {
84: }
85: }
86: }
87:
88: void setDone() {
89: done = true;
90: }
91: }
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