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| Code Block |
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void archiveInternet(ProgressMonitor pm) {
try {
pm.beginTask("ComputingArchiving foointernet", 100);
// Here: perform 20% of the work (download)
pm.worked(20);
// Here: perform 50% of the work (zip)
pm.worked(50);
// Here: perform remaining 30% work (copy)
pm.worked(30);
} finally {
pm.done();
}
} |
...
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void archiveInternet(ProgressMonitor pm) {
try {
pm.beginTask("ComputingArchiving foointernet", 100);
// Here: perform 20% of the work (download)
downloadInternet(SubProgressMonitor.create(pm, 20));
// Here: perform 50% of the work (zip)
zipDownloadedInternet(SubProgressMonitor.create(pm, 50));
// Here: perform remaining 30% work (copy)
copyInternetZip(SubProgressMonitor.create(pm, 30));
} finally {
pm.done();
}
} |
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archiveInternet(ProgressMonitor.NULL); |
From command-line tools, you can use:
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archiveInternet(new PrintWriterProgressMonitor(System.out)); |
From GUI code, we ustilise the adapter class org.esa.snap.rcp.util.ProgressHandleMonitor to report progress through ProgressMonitor interface but using NetBeans progress bars. As long running tasks should not be called from the Swing event dispatcher thread (EDT), we will have to create or reuse background threads to do so. The NetBeans org.netbeans.api.progress.ProgressUtils API provides some useful methods for this:
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ProgressHandleMonitor pm = ProgressHandleMonitor.create("DownloadingArchiving internet");
Runnable operation = () -> {
archiveInternet(pm);
};
ProgressUtils.runOffEventThreadWithProgressDialog(operation, "DownloadingArchiving internet",
pm.getProgressHandle(),
true,
50, // time in ms after which wait cursor is shown
1000); // time in ms after which dialog with "Cancel" button is shown |
Or using the NetBeans class org.openide.util.RequestProcessor:
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RequestProcessor.getDefault().post(() -> {
ProgressHandle handle = ProgressHandleFactory.createHandle("DownloadingArchiving internet");
ProgressMonitor pm = new ProgressHandleMonitor(handle);
archiveInternet(pm);
}); |
See https://github.com/senbox-org/snap-desktop/blob/master/snap-rcp/src/main/java/org/esa/snap/rcp/util/ProgressHandleMonitor.java.
Documentation of NetBeans Progress API:
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