public static void performLogin(final AsyncCallback<Boolean> callback) {
// let's only login if we are not actually logged in
try {
final String url = GWT.getHostPageBaseURL() + "api/mantle/isAuthenticated"; // $NON-NLS-1$
RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.GET, url);
requestBuilder.setHeader("If-Modified-Since", "01 Jan 1970 00:00:00 GMT");
requestBuilder.setHeader("accept", "text/plain");
requestBuilder.sendRequest(
null,
new RequestCallback() {
public void onError(Request request, Throwable caught) {
MantleLoginDialog dialog = new MantleLoginDialog(callback, false);
dialog.show();
}
public void onResponseReceived(Request request, Response response) {
if (!"true".equalsIgnoreCase(response.getText())) {
MantleLoginDialog dialog = new MantleLoginDialog(callback, false);
dialog.show();
}
}
});
} catch (RequestException e) {
MantleLoginDialog dialog = new MantleLoginDialog(callback, false);
dialog.show();
}
}
private void doLogin() {
MantleLoginDialog.performLogin(
new AsyncCallback<Object>() {
public void onFailure(Throwable caught) {
MessageDialogBox dialogBox =
new MessageDialogBox(
Messages.getString("error"),
Messages.getString("invalidLogin"),
false,
false,
true) {}; //$NON-NLS-1$ //$NON-NLS-2$
dialogBox.setCallback(
new IDialogCallback() {
public void cancelPressed() {
// do nothing
}
public void okPressed() {
doLogin();
}
});
dialogBox.center();
}
public void onSuccess(Object result) {
fetchOverlays();
}
});
}
