package gaetest.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.GWT.UncaughtExceptionHandler;
import com.google.gwt.event.dom.client.*;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.event.shared.SimpleEventBus;
import com.google.gwt.user.client.ui.*;
import com.google.web.bindery.requestfactory.gwt.client.RequestFactoryLogHandler;
import com.google.web.bindery.requestfactory.shared.LoggingRequest;
import com.google.web.bindery.requestfactory.shared.Receiver;
import gaetest.shared.FieldVerifier;
import gaetest.shared.TestRequestFactory;
import gaetest.shared.TestRequestFactory.UserRequest;
import gaetest.shared.UserProxy;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class Gaetest implements EntryPoint {
/**
* The message displayed to the user when the server cannot be reached or
* returns an error.
*/
private static final String SERVER_ERROR = "An error occurred while "
+ "attempting to contact the server. Please check your network "
+ "connection and try again.";
/**
* Create a remote service proxy to talk to the server-side Greeting service.
*/
private final GreetingServiceAsync greetingService = GWT
.create(GreetingService.class);
private static final Logger log = Logger.getLogger(Gaetest.class.getName());
EventBus eventBus = new SimpleEventBus();
/**
* This is the entry point method.
*/
@Override
public void onModuleLoad() {
GWT.setUncaughtExceptionHandler(new UncaughtExceptionHandler() {
@Override
public void onUncaughtException(Throwable e) {
log.log(Level.SEVERE, e.getMessage(), e);
}
});
final TestRequestFactory requests = GWT.create(TestRequestFactory.class);
requests.initialize(eventBus);
RequestFactoryLogHandler.LoggingRequestProvider provider = new RequestFactoryLogHandler.LoggingRequestProvider() {
@Override
public LoggingRequest getLoggingRequest() {
return requests.loggingRequest();
}
};
// Logger.getLogger("").addHandler(new ErrorDialog().getHandler());
Logger.getLogger("").addHandler(
new RequestFactoryLogHandler(provider, Level.ALL,
new ArrayList<String>()));
final Button sendButton = new Button("Send");
final TextBox nameField = new TextBox();
nameField.setText("GWT User");
final Label errorLabel = new Label();
// We can add style names to widgets
sendButton.addStyleName("sendButton");
// Add the nameField and sendButton to the RootPanel
// Use RootPanel.get() to get the entire body element
RootPanel.get("nameFieldContainer").add(nameField);
RootPanel.get("sendButtonContainer").add(sendButton);
RootPanel.get("errorLabelContainer").add(errorLabel);
// Focus the cursor on the name field when the app loads
nameField.setFocus(true);
nameField.selectAll();
// Create the popup dialog box
final DialogBox dialogBox = new DialogBox();
dialogBox.setText("Remote Procedure Call");
dialogBox.setAnimationEnabled(true);
final Button closeButton = new Button("Close");
// We can set the id of a widget by accessing its Element
closeButton.getElement().setId("closeButton");
final Label textToServerLabel = new Label();
final HTML serverResponseLabel = new HTML();
VerticalPanel dialogVPanel = new VerticalPanel();
dialogVPanel.addStyleName("dialogVPanel");
dialogVPanel.add(new HTML("<b>Sending name to the server:</b>"));
dialogVPanel.add(textToServerLabel);
dialogVPanel.add(new HTML("<br><b>Server replies:</b>"));
dialogVPanel.add(serverResponseLabel);
dialogVPanel.setHorizontalAlignment(VerticalPanel.ALIGN_RIGHT);
dialogVPanel.add(closeButton);
dialogBox.setWidget(dialogVPanel);
// Add a handler to close the DialogBox
closeButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
dialogBox.hide();
sendButton.setEnabled(true);
sendButton.setFocus(true);
}
});
// Create a handler for the sendButton and nameField
class MyHandler implements ClickHandler, KeyUpHandler {
/**
* Fired when the user clicks on the sendButton.
*/
@Override
public void onClick(ClickEvent event) {
sendNameToServer();
}
/**
* Fired when the user types in the nameField.
*/
@Override
public void onKeyUp(KeyUpEvent event) {
if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
sendNameToServer();
}
}
/**
* Send the name from the nameField to the server and wait for a response.
*/
private void sendNameToServer() {
// First, we validate the input.
errorLabel.setText("");
String textToServer = nameField.getText();
if (!FieldVerifier.isValidName(textToServer)) {
errorLabel.setText("Please enter at least four characters");
return;
}
// Then, we send the input to the server.
sendButton.setEnabled(false);
textToServerLabel.setText(textToServer);
serverResponseLabel.setText("");
UserRequest userContext = requests.userRequest();
UserProxy user = userContext.create(UserProxy.class);
user.setName(textToServer);
userContext.save(user).fire(new Receiver<Long>() {
@Override
public void onSuccess(Long response) {
// String result = response.toString();
dialogBox.setText("Remote Procedure Call");
serverResponseLabel.removeStyleName("serverResponseLabelError");
serverResponseLabel.setHTML("User id: ");
dialogBox.center();
closeButton.setFocus(true);
}
});
// greetingService.greetServer(textToServer, new AsyncCallback<String>()
// {
// public void onFailure(Throwable caught) {
// // Show the RPC error message to the user
// dialogBox.setText("Remote Procedure Call - Failure");
// serverResponseLabel.addStyleName("serverResponseLabelError");
// serverResponseLabel.setHTML(SERVER_ERROR);
// dialogBox.center();
// closeButton.setFocus(true);
// }
//
// public void onSuccess(String result) {
// dialogBox.setText("Remote Procedure Call");
// serverResponseLabel.removeStyleName("serverResponseLabelError");
// serverResponseLabel.setHTML(result);
// dialogBox.center();
// closeButton.setFocus(true);
// }
// });
}
}
// Add a handler to send the name to the server
MyHandler handler = new MyHandler();
sendButton.addClickHandler(handler);
nameField.addKeyUpHandler(handler);
}
}