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package com.vaadin.tests.urifragments;
import com.vaadin.server.Page;
import com.vaadin.server.Page.UriFragmentChangedListener;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUIWithLog;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI;
@SuppressWarnings("serial")
public class FragmentHandlingAndAsynchUIUpdate extends AbstractTestUIWithLog {
protected static final int START_FRAG_ID = 1000;
protected static final String FRAG_NAME_TPL = "FRAG%s";
protected static final String BUTTON_ID = "SetNextFragmentButton";
private int fragmentId = START_FRAG_ID;
@Override
protected void setup(VaadinRequest request) {
Button button = new Button(
"Click Me 10 times, wait for ui to settle (10 seconds) then click the back button 10 times.");
button.setId(BUTTON_ID);
button.addClickListener(event -> {
Label c = new Label("Thank you for clicking");
c.setId(String.valueOf(fragmentId));
getLayout().addComponent(c);
log(String.format("Button was clicked for fragmentId %s",
fragmentId));
Page.getCurrent()
.setUriFragment(String.format(FRAG_NAME_TPL, fragmentId++));
});
getLayout().addComponent(button);
Page.getCurrent().addUriFragmentChangedListener(
createUriFragmentChangedListener());
}
private UriFragmentChangedListener createUriFragmentChangedListener() {
return event -> {
log(String.format("uriFragmentChanged %s", event.getUriFragment()));
if (!event.getUriFragment().startsWith("FRAG")) {
return;
}
final String frag = event.getUriFragment().substring(4);
Component fragComp = null;
for (Component comp : getLayout()) {
if (comp.getId() != null && comp instanceof Label
&& comp.getId().equals(frag)) {
fragComp = comp;
break;
}
}
if (fragComp == null) {
return;
}
final Label fragLabel = (Label) fragComp;
createThread(frag, fragLabel).start();
fragLabel.setCaption(String.format("Thread running for %s!", frag));
UI.getCurrent().setPollInterval(1000);
};
}
private Thread createThread(final String frag, final Label fragLabel) {
return new Thread() {
@Override
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
UI.getCurrent().access(() -> {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
log(String.format(
"setCaption in synch mode for fragment %s", frag));
java.util.Random rand = new java.util.Random();
fragLabel.setCaption(
String.format("Thread finished on %s (%s)", frag,
rand.nextInt()));
});
};
};
}
@Override
protected String getTestDescription() {
return "Back and Forward buttons in browser should work correctly during asynchronous ui update";
}
@Override
protected Integer getTicketNumber() {
return 13997;
}
}
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