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Java > Open Source Codes > scriptella > interactive > ProgressIndicatorBase


1 /*
2  * Copyright 2006-2007 The Scriptella Project Team.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package scriptella.interactive;
17
18 /**
19  * TODO: Add documentation
20  *
21  * @author Fyodor Kupolov
22  * @version 1.0
23  */
24 public abstract class ProgressIndicatorBase implements ProgressIndicator {
25     private double lastPercentage = 0;
26
27     public void showProgress(final double progress, final String JavaDoc message) {
28         if (progress == 1) {
29             onComplete(message);
30
31             return;
32         }
33
34         if ((progress - lastPercentage) > getOutputThreshold()) {
35             show(message, progress);
36             lastPercentage = progress;
37         }
38     }
39
40     protected double getOutputThreshold() {
41         return 0;
42     }
43
44     protected abstract void show(final String JavaDoc label, final double progress);
45
46     protected void onComplete(final String JavaDoc label) {
47         show(label, 1);
48     }
49 }
50
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