Just for autocomplete. If you don't care about autocomplete, I'd recommend
doing it as you say with GWT RPC.
On Tuesday, 28 August 2012 22:19:37 UTC+10, Fille wrote:
>
>
> Is there any reason for not using just gwt HTML or somthing else with
> @UiHandler("loginButton") to make a RPC-call for log in?
>
> Ex:
>
> UiBinder:
> <g:HTMLPanel>
> <g:TextBox ui:field="username" />
> <g:PasswordTextBox ui:field="password" />
> <g:HTML ui:field="loginButton"> LOGIN </g:HTML>
> </g:HTMLPanel>
>
>
> Composite:
> @UiHandler("loginButton")
> void onLoginClick(ClickEvent e) {
> // make RPC-call and validate user.....
> }
>
> Or is it just for autocomplete?
>
>
>
> Den torsdagen den 26:e februari 2009 kl. 18:21:23 UTC+1 skrev Thomas
> Broyer:
>>
>> If you want to have browsers auto-complete username/password in your
>> application's login form, you probably did (*I* did) this:
>> 1. follow recommandations from
>> http://code.google.com/p/google-web-toolkit-incubator/wiki/LoginSecurityFAQ,
>>
>> i.e. your form and fields have to be in the original markup and you
>> mustn't use .submit() but let the browser submit using, say... a
>> submit button?
>> 2. use something like that in your code:
>> // note the "true" second argument, to create a hidden iframe
>> FormPanel form = FormPanel.wrap(Document.get().getElementById
>> ("login"), true);
>> form.addFormPanel(new FormPanel() {
>> public void onSubmit(FormSubmitEvent event) {
>> // do some validation before submitting (non-empty fields)
>> // and call event.setCancelled(true) if needed.
>> }
>> public void onSubmitComplete(FormSubmitCompleteEvent event) {
>> // somehow "parse" event.getResults() to know whether it
>> // succeeded or not.
>> }
>> });
>> 3. Your server have to send its response in with Content-Type:text/
>> html, even if its JSON (hence the "parse" above)
>>
>>
>> But there's actually an alternative!
>>
>> It never occured to me before someone pointed me to a login page that
>> does it: if your form submits to a javascript: URL, then the browser's
>> "auto-complete" feature will work (provided the form and fields were
>> in the original HTML page markup, same limitation as above).
>>
>> What it means is that you can use GWT-RPC or RequestBuilder!!!
>>
>> Your code now looks like:
>> private static native void injectLoginFunction() /*-{
>> $wnd.__gwt_login = @com.example.myapp.client.App::doLogin();
>> }-*/;
>>
>> private static void doLogin() {
>> // get the fields values and do your GWT-RPC call or
>> // RequestBuilder thing here.
>> }
>> ...
>> // notice that we now pass "false" as the second argument
>> FormPanel form = FormPanel.wrap(Document.get().getElementById
>> ("login"), false);
>> form.setAction("javascript:__gwt_login()");
>>
>> And of course, you can still validate the form before it's submitted:
>>
>> form.addFormPanel(new FormPanel() {
>> public void onSubmit(FormSubmitEvent event) {
>> // do some validation before submitting (non-empty fields)
>> // and call event.setCancelled(true) if needed.
>> }
>> public void onSubmitComplete(FormSubmitCompleteEvent event) {
>> // will never be called.
>> }
>> });
>>
>>
>> Tested in IE7, Firefox 3.0 and Opera 10alpha; please update if it
>> works (or doesn't work) for you in other browsers.
>> The previous solution (using the iframe) was successfully tested in
>> IE6, IE7, IE8 (beta 1 at that time), Firefox 2 and 3.0, Opera (9.62 at
>> that time), Safari 3 for Windows and Google Chrome (1 and 2).
>
>
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