return;
try {
ChangesetQuery query = dialog.getChangesetQuery();
if (query == null) return;
ChangesetQueryTask task = new ChangesetQueryTask(ChangesetCacheManager.this, query);
ChangesetCacheManager.getInstance().runDownloadTask(task);
} catch (IllegalStateException e) {
JOptionPane.showMessageDialog(ChangesetCacheManager.this, e.getMessage(), tr("Error"), JOptionPane.ERROR_MESSAGE);
}
}