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package com.vaadin.tests.components.ui;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUIWithLog;
import com.vaadin.tests.util.Log;
import com.vaadin.v7.data.util.MethodProperty;
import com.vaadin.v7.ui.TextField;
public class UIPolling extends AbstractTestUIWithLog {
protected static final long SLEEP_TIME = 500;
private class BackgroundLogger extends Thread {
@Override
public void run() {
int i = 0;
while (true) {
i++;
try {
Thread.sleep(SLEEP_TIME);
} catch (InterruptedException e) {
}
final int iteration = i;
access(() -> log
.log((iteration * SLEEP_TIME) + "ms has passed"));
}
}
}
private BackgroundLogger logger = null;
@Override
protected void setup(VaadinRequest request) {
log = new Log(20);
log.setNumberLogRows(true);
TextField pollingInterval = new TextField("Poll interval",
new MethodProperty<Integer>(this, "pollInterval"));
pollingInterval.setImmediate(true);
pollingInterval.setValue("-1");
pollingInterval.addValueChangeListener(event -> {
if (logger != null) {
logger.stop();
logger = null;
}
if (getPollInterval() >= 0) {
logger = new BackgroundLogger();
logger.start();
}
});
addComponent(pollingInterval);
}
@Override
protected String getTestDescription() {
return "Tests the polling feature of UI. Set the polling interval using the text field. Enabling polling will at the same time start a background thread which logs every 500ms";
}
@Override
protected Integer getTicketNumber() {
return 11495;
}
}
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