Am playing with jsf and learning ^^ (got example doing new HtmlXXX from
sun's forum)
for the tutorials, if you have good references i'll be happy to read
them, i couldn't find anything that went further than just creating html
elements inside the renderer (nothing about creating composite elements
for example). And i still need a bit of time to read the full 300 pages
jsf specs ^^ :)
Btw am still trying to find how to connect the 'command' to the bean
'someAction' method, because the bean is the result of evaluation of my
custom component 'value' and i bet if my custom component is invoked
like this
<customLib:customComponent value="#{myBean.myProperty}"/> and i try to
generate a method binding for command action using such an expression
'#{#{myBean.myProperty}.someAction}' this will probably fail :)
Thanks for your time,
David Delbecq
James Mitchell a écrit :
> I see, sorry I wasn't paying attention to your constructor.
>
>
> Try creating your components with something like this...
>
>
> ...
> ...
>
> street = createHtmlInputText("street");
> number = createHtmlInputText("number");
> town = createHtmlInputText("town");
> postCode = createHtmlInputText("postCode");
> command = createHtmlCommandButton("command");
>
> ...
> ...
> }
>
> protected HtmlInputText createHtmlInputText(String id) {
> Application application = FacesContext.getCurrentInstance
> ().getApplication();
>
> HtmlInputText intput =
> (HtmlInputText)application.createComponent
> (HtmlInputText.COMPONENT_TYPE);
> input.setId(id);
> return input;
> }
> protected HtmlInputText createHtmlCommandButton(String id) {
> Application application = FacesContext.getCurrentInstance
> ().getApplication();
> ...
> ...
>
>
>
>
> The problem is in how you are creating new components. It isn't
> enough just to do new HtmlXXX(), you must create them with the
> createComponent method. There's a few things going on under the
> covers with respect to how JSF deals with components. You might also
> think about getting a good book or referencing a tutorial while
> building your app. There's a lot more to JSF than meets the eye.
>
>
> --
> James Mitchell
>
>
>
>
> On Jul 13, 2006, at 2:44 PM, delbd wrote:
>
>> No, am creating a JSF component on it's own (with it's own tag),
>> like this
>> <mytaglib:mycomponent id="someId" value="#{myBean}"/>
>>
>>
>> James Mitchell a écrit :
>>
>>> Assuming you are using JSP, how are using this on your page? With
>>> your own taglib or binding to an existing instance? If you are
>>> simply binding a standard HtmlPanelGrid and then declaring child
>>> components, you will need to bind any nested components as well.
>>>
>>>
>>> --
>>> James Mitchell
>>>
>>>
>>>
>>>
>>> On Jul 13, 2006, at 10:01 AM, David Delbecq wrote:
>>>
>>>> Hello all,
>>>>
>>>> Starting to learn JSF, i tried to create my custom UI component.
>>>> Because
>>>> it will be made of several fields and button, i decided to extends
>>>> HTMLPanelGrid. The constructor creates the various components part of
>>>> the Panel. After getting "funny" errors in console, i worked on a
>>>> step
>>>> by step and noticed in restore view, myfaces does inject childs in my
>>>> component (so the number of child is double: those created at
>>>> intanciation of my component and those saved from previous
>>>> instance and
>>>> injected as part of restore view).
>>>>
>>>> My question is, considering the way i do it for now (which is bad
>>>> ;) ),
>>>> what is the best way to avoid this restore view problem. How can my
>>>> component know if it is in a state where it need to create itself
>>>> it's
>>>> children or in a state where the controller will restore the children
>>>> tree itself?
>>>>
>>>> Thank for help.
>>>>
>>>> public class HTMLAddressComponent extends HtmlPanelGrid implements
>>>> NamingContainer {
>>>> .....
>>>>
>>>> public HTMLAddressComponent(){
>>>> street = new HtmlInputText();
>>>> number = new HtmlInputText();
>>>> town = new HtmlInputText();
>>>> postCode = new HtmlInputText();
>>>> command = new HtmlCommandButton();
>>>> command.setValue("enable/disable");
>>>> street.setId("street");
>>>> number.setId("number");
>>>> town.setId("town");
>>>> postCode.setId("postCode");
>>>> command.setId("command");
>>>> List childs = getChildren();
>>>> HtmlPanelGroup group = new HtmlPanelGroup();
>>>> List l = group.getChildren();
>>>> l.add(getText("Street: "));
>>>> l.add(street);
>>>> l.add(getText("Number: "));
>>>> l.add(number);
>>>> childs.add(group);
>>>> group = new HtmlPanelGroup();
>>>> l = group.getChildren();
>>>> l.add(getText("postcode: "));
>>>> l.add(postCode);
>>>> l.add(getText("Town: "));
>>>> l.add(town);
>>>> childs.add(group);
>>>> childs.add(command);
>>>> }
>>>> private UIComponent getText(String value){
>>>> HtmlOutputText text = new HtmlOutputText();
>>>> text.setValue(value);
>>>> return text;
>>>> }
>>>>
>>>>
>>>>
>>>
>>
>
>
