Hi,
thank you for the code! I adopted it to my application.
So you authenticate the user via the remote service! But how do you
actually store the user context the app is running in? Do you do some
session management?
Thanks
Magnus
On Jun 2, 7:15 pm, Bruno Lopes <bruno.lourenco.lo...@gmail.com> wrote:
> Hi Alpine Bluster,
>
> look at this code:
>
> public void onModuleLoad() {
>
> this.setLoginPanel();
>
> loginButton = new Button("Login");
>
> loginButton.addListener(new ButtonListenerAdapter() {
>
> public void onClick(Button button, EventObject e) {
>
> userAuthentication();
>
> }
> });
>
> formPanel.addButton(loginButton);
>
> formPanel.setBorder(false);
>
> loginPanel.add(formPanel);
>
> Element appPanelEl = loginPanel.getElement();
>
> @SuppressWarnings("unused")
>
> KeyMap map = new KeyMap(appPanelEl, new KeyMapConfig() {
>
> {
>
> setKey(EventObject.ENTER);
>
> setKeyListener(new KeyListener() {
>
> public void onKey(int key, EventObject e) {
>
> loginButton.focus();
>
> }
> });
> }
> });
>
> RootPanel.get("login_widget").add(loginPanel);
>
> }
>
> private void userAuthentication() {
>
> if (this.userNameField.getValueAsString().equals(""))
>
> Window.alert("username must not be empty.");
>
> else {
>
> loginService = GWT.create(LoginService.class);
>
> String username = this.userNameField.getValueAsString();
>
> String password = this.passwordField.getValueAsString();
>
> this.loginService.login(username, password,
>
> new AsyncCallback<LoginResponse>() {
>
> public void onFailure(Throwable caught) {
>
> Window.alert("server side failure: " + caught);
>
> }
>
> public void onSuccess(LoginResponse result) {
>
> if (result.isLoginSuccess()){
>
> Window.Location.replace("./../Main.html");
>
> }
>
> else Window.alert("username or password invalid.");
>
> }
> });
> }
> }
>
> ...
>
> FOR LOGOUT
> ....
>
> private Panel northPanel = new Panel();
>
> ....
>
> Toolbar toolbar = new Toolbar();
>
> ToolbarButton logoutButton = new ToolbarButton("Sign Out");
>
> logoutButton.addListener( new ButtonListenerAdapter() {
>
> public void onClick( Button button, EventObject e ) {
>
> LoginServiceAsync service = GWT.create(LoginService.class);
>
> service.logout(new AsyncCallback<Void>() {
>
> @Override
>
> public void onFailure(Throwable caught) {
>
> caught.printStackTrace();
>
> }
>
> @Override
>
> public void onSuccess(Void result) {
>
> Window.Location.replace("./../Login.html");
>
> }
> });
> }
> });
>
> tabPanel = new TabPanel();
>
> toolbar.addFill();
>
> toolbar.addText("welcome," + someUser..);
>
> toolbar.addSeparator();
>
> toolbar.addButton(logoutButton);
>
> tabPanel.setWidth(NORMALIZE_SPACING);
>
> tabPanel.setTopToolbar(toolbar);
>
> northPanel.add(tabPanel);
>
> On Wed, Jun 2, 2010 at 5:25 PM, Magnus <alpineblas...@googlemail.com> wrote:
> > Hi,
>
> > I cannot find a minimalistic example that shows how to realize a login/
> > logout functionality.
> > Could please someone point me to such an example?
>
> > I also wonder where to put the different things. For example, the code
> > that immediately reacts on the "login" button could be placed within
> > the "client" folder of a GWT project, or it could be realized as a
> > servlet.
>
> > When do I use a servlet and how?
>
> > Thank you!
> > Magnus
>
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