package com.vaadin.tests.application;
import com.vaadin.server.DownloadStream;
import com.vaadin.server.PaintException;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinSession;
import com.vaadin.tests.components.AbstractTestCase;
import com.vaadin.tests.integration.FlagSeResource;
import com.vaadin.tests.util.Log;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Embedded;
import com.vaadin.ui.LegacyWindow;
import com.vaadin.ui.UI;
public class ThreadLocalInstances extends AbstractTestCase {
private static final VaadinSession staticInitApplication = VaadinSession
.getCurrent();
private static final UI staticInitRoot = UI.getCurrent();
private final LegacyWindow mainWindow = new LegacyWindow() {
boolean paintReported = false;
@Override
protected void init(VaadinRequest request) {
reportCurrentStatus("root init");
}
@Override
public void paintContent(com.vaadin.server.PaintTarget target)
throws PaintException {
if (!paintReported) {
reportCurrentStatus("root paint");
Thread thread = new Thread() {
@Override
public void run() {
getSession().lock();
try {
reportCurrentStatus("background thread");
} finally {
getSession().unlock();
}
}
};
thread.start();
paintReported = true;
}
super.paintContent(target);
}
};
private final FlagSeResource resource = new FlagSeResource() {
@Override
public DownloadStream getStream() {
ThreadLocalInstances.this.getContext().lock();
try {
reportCurrentStatus("resource handler");
} finally {
ThreadLocalInstances.this.getContext().unlock();
}
return super.getStream();
}
};
private final Log log = new Log(16);
public ThreadLocalInstances() {
mainWindow.addComponent(log);
mainWindow.addComponent(new Embedded("Icon", resource));
mainWindow.addComponent(new Button("Sync", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
reportCurrentStatus("button listener");
}
}));
reportStatus("class init", staticInitApplication, staticInitRoot);
reportCurrentStatus("app constructor");
}
@Override
protected void init() {
reportCurrentStatus("app init");
setMainWindow(mainWindow);
}
@Override
protected String getDescription() {
return "Tests the precence of Application.getCurrentApplication() and UI.getCurrentRoot() from different contexts";
}
@Override
protected Integer getTicketNumber() {
return Integer.valueOf(7895);
}
private void reportCurrentStatus(String phase) {
reportStatus(phase, VaadinSession.getCurrent(), UI.getCurrent());
}
private void reportStatus(String phase, VaadinSession application, UI uI) {
log.log(getState(application, this) + " app in " + phase);
log.log(getState(uI, mainWindow) + " root in " + phase);
}
private static String getState(Object value, Object reference) {
if (value == null) {
return "null";
} else if (value == reference) {
return "this";
} else {
return "some";
}
}
}