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/*
* Copyright 2000-2013 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.tests.components.ui;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.data.Property.ValueChangeListener;
import com.vaadin.data.util.MethodProperty;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUIWithLog;
import com.vaadin.tests.util.Log;
import com.vaadin.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;
runSafely(new Runnable() {
@Override
public void run() {
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(new ValueChangeListener() {
@Override
public void valueChange(ValueChangeEvent 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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