/**
* Method for finding the error handler for the given connector. Uses connector hierarchy to find
* a connector with an error handler. Falls back to the VaadinSession error handler if no
* connector has specified an error handler.
*
* <p>Returns a {@link DefaultErrorHandler} if no error handler was found
*
* @param connector The target connector
* @return An ErrorHandler for the connector
*/
public static ErrorHandler findErrorHandler(ClientConnector connector) {
if (connector != null) {
ErrorHandler errorHandler = connector.getErrorHandler();
if (errorHandler != null) {
return errorHandler;
}
ClientConnector parent = connector.getParent();
if (parent != null) {
return findErrorHandler(parent);
}
/*
* Reached UI and found no error handler. Try session which
* typically has one.
*/
UI ui = connector.getUI();
if (ui != null) {
errorHandler = findErrorHandler(ui.getSession());
if (errorHandler != null) {
return errorHandler;
}
}
}
/*
* No connector known or the connector is not attached to a session. Try
* the current session
*/
if (VaadinSession.getCurrent() != null) {
ErrorHandler errorHandler = VaadinSession.getCurrent().getErrorHandler();
if (errorHandler != null) {
return errorHandler;
}
}
/*
* We should never really get here as at least the session should have
* an error handler. If for some reason it does not we use the default
* error handler.
*/
return new DefaultErrorHandler();
}
/**
* Adds a new browser level window to this application. Please note that UI doesn't have a name
* that is used in the URL - to add a named window you should instead use {@link #addWindow(UI,
* String)}
*
* @param uI the UI window to add to the application
* @return returns the name that has been assigned to the window
* @see #addWindow(UI, String)
*/
public void addWindow(LegacyWindow uI) {
if (uI.getName() == null) {
String name = Integer.toString(namelessUIIndex++);
uI.setName(name);
}
uI.setApplication(this);
legacyUINames.put(uI.getName(), uI);
uI.setSession(VaadinSession.getCurrent());
}
private void saveUser(String oauthId, String name, String email, String picUrl) {
User user =
UserBean.builder()
.oauthIdentifier(oauthId)
.firstName(name)
.picUrl(picUrl)
.lastName("")
.email(email)
.role("user")
.build();
try {
UserVertex userVertex = (UserVertex) new UserVertex(user).saveOrUpdateInNewTX();
user = userVertex.model();
VaadinSession.getCurrent().setAttribute(User.class.getName(), user);
} catch (Exception e) {
e.printStackTrace();
}
}
public void doInit(URL url) {
this.url = url;
VaadinSession.getCurrent().setErrorHandler(this);
init();
}
public VaadinSession getContext() {
return VaadinSession.getCurrent();
}
@Override
public boolean handleRequest(
VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOException {
if (data.isCallbackForMe(request)) {
String verifier = request.getParameter(data.getVerifierParameterName());
if (verifier != null) {
// Got verifier!
data.setVerifier(requestToken, new Verifier(verifier));
finish(session, response);
Token t = data.getAccessToken();
OAuthRequest r = new OAuthRequest(Verb.GET, data.getRequestLink());
data.signRequest(t, r);
Response resp = r.send();
FacebookAnswer answer = new Gson().fromJson(resp.getBody(), FacebookAnswer.class);
String name = answer.name;
String picUrl = answer.picture.data.url;
String oauthId = "facebook" + answer.id;
saveUser(oauthId, name, "", picUrl);
VaadinSession.getCurrent().removeRequestHandler(this);
((VaadinServletResponse) response)
.getHttpServletResponse()
.sendRedirect(data.getRedirectUrl());
return true;
}
// No verifier in the parameters. That's most likely because the user
// denied the OAuth.
// TODO: current error message reporting (below) is not very useful
String error = null;
for (String errorName : data.getErrorParameterNames()) {
error = request.getParameter(errorName);
if (error != null) {
break;
}
}
String errorMessage;
if (error == null) {
errorMessage = "OAuth failed.";
} else {
errorMessage = "OAuth denied: " + error;
}
data.setDenied(errorMessage);
finish(session, response);
} else if (request.getParameter("code") != null) {
String code = request.getParameter("code");
Verifier v = new Verifier(code);
Token t = googleService.getAccessToken(null, v);
OAuthRequest r = new OAuthRequest(Verb.GET, "https://www.googleapis.com/plus/v1/people/me");
googleService.signRequest(t, r);
Response resp = r.send();
GooglePlusAnswer answer = new Gson().fromJson(resp.getBody(), GooglePlusAnswer.class);
String name =
(answer.displayName != null && !answer.displayName.equals(""))
? answer.displayName
: answer.emails[0].value.substring(0, answer.emails[0].value.indexOf("@"));
String picUrl = answer.image.url;
String oauthId = "google" + answer.id;
saveUser(oauthId, name, answer.emails[0].value, picUrl);
VaadinSession.getCurrent().removeRequestHandler(this);
((VaadinServletResponse) response)
.getHttpServletResponse()
.sendRedirect(data.getRedirectUrl());
return true;
}
return false;
}
