aboutsummaryrefslogtreecommitdiff
path: root/subsonic-android/src/github/daneren2005/dsub/util/TabBackgroundTask.java
blob: c345b98277bbb34854dac139521b05a728dbaef4 (plain)
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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
package github.daneren2005.dsub.util;

import github.daneren2005.dsub.fragments.SubsonicFragment;

/**
 * @author Sindre Mehus
 * @version $Id$
 */
public abstract class TabBackgroundTask<T> extends BackgroundTask<T> {

    private final SubsonicFragment tabFragment;

    public TabBackgroundTask(SubsonicFragment fragment) {
        super(fragment.getActivity());
        tabFragment = fragment;
    }

    @Override
    public void execute() {
        tabFragment.setProgressVisible(true);

        new Thread() {
            @Override
            public void run() {
                try {
                    final T result = doInBackground();
                    if (isCancelled()) {
                        return;
                    }

                    getHandler().post(new Runnable() {
                        @Override
                        public void run() {
                            tabFragment.setProgressVisible(false);
                            done(result);
                        }
                    });
                } catch (final Throwable t) {
                    if (isCancelled()) {
                        return;
                    }
                    getHandler().post(new Runnable() {
                        @Override
                        public void run() {
                            tabFragment.setProgressVisible(false);
                            error(t);
                        }
                    });
                }
            }
        }.start();
    }

    private boolean isCancelled() {
        return !tabFragment.isAdded();
    }

    @Override
    public void updateProgress(final String message) {
        getHandler().post(new Runnable() {
            @Override
            public void run() {
                tabFragment.updateProgress(message);
            }
        });
    }
}