The first time you press the hyperlink to "logout", there's a new
history item added of that name. The second time you press it, the
current history token is still "logout", so it does nothing.
hezjing wrote:
> Hi
>
> I have the following code which suppose to do the following:
>
> 1) when the login button is clicked, it will clear the RootPanel and
> show a logout hyperlink,
>
> 2) when the logout hyperlink is selected, it will clear the RootPanel
> and show the login button again.
>
>
> public class Dummy implements EntryPoint, ValueChangeHandler<String> {
>
> public void onModuleLoad() {
> History.addValueChangeHandler(this);
> displayLogin();
> }
>
> private void displayLogin() {
> Button ok = new Button("Login");
> ok.addClickHandler(new ClickHandler() {
> public void onClick(ClickEvent event) {
> displayContent();
> }
> });
> RootPanel root = RootPanel.get();
> root.clear();
> root.add(ok);
> }
>
> private void displayContent() {
> Hyperlink logout = new Hyperlink("Logout", "logout");
> RootPanel root = RootPanel.get();
> root.clear();
> root.add(logout);
> }
>
> public void onValueChange(ValueChangeEvent<String> event) {
> if (event.getValue().equals("logout")) {
> displayLogin();
> }
> }
> }
>
>
> The problem is when tested in hosted mode, the hyperlink stops
> responding after the 1st time:
>
> 1) Login button is clicked, show logout hyperlink
>
> 2) Logout hyperlink is selected, show login button
>
> 3) Login button is clicked, show logout hyperlink
>
> 4) Logout hyperlink is selected, and NOTHING happen here!
>
>
> Do you have any idea of what could be the problem?
>
>
> --
>
> Hez
>
> >
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