progressBar 进度条

<progressBar value="0.5"/>

<progressBar id="progressBar"/>

@ViewComponent
protected ProgressBar progressBar; (1)
@Autowired
protected BackgroundWorker backgroundWorker;

protected BackgroundTaskHandler<Void> taskHandler;

private static final int ITERATIONS = 6;

@Subscribe
protected void onInit(InitEvent event) {  (2)
    taskHandler = backgroundWorker.handle(createBackgroundTask());
    taskHandler.execute();
}

protected BackgroundTask<Integer, Void> createBackgroundTask () { (3)
    return new BackgroundTask<>(100, TimeUnit.SECONDS) {
        @Override
        public Void run(TaskLifeCycle<Integer> taskLifeCycle) throws Exception {
            for (int i=1; i< ITERATIONS; i++) {
                TimeUnit.SECONDS.sleep(1);
                taskLifeCycle.publish(i);
            }
            return null;
        }

        @Override
        public void progress (List<Integer> changes) {
            double lastValue = changes.get(changes.size() - 1);
            double value = lastValue/ITERATIONS;
            progressBar.setValue(value); (4)
        }
    };
}

<progressBar min="0" max="10" value="5"/>