Needs help for creating a new JSF component

[St...@ext.ec.europa.eu]

Hi,

I have to develop a new JSF component (component, tag and renderer).

The goal of this new component is easy... Put together severals input zone in one single component.

I have done somethink that works... But i'm not sure I did everything correctly. (in the State of Art)
--> Should be great if I can get a link to a complete tutorial or full sample.

I create some code I don't like:
--> I have to "hardcoded" in the backingbean the "id" of my component and then cast it to my component.
In my backingbean, the code looks like this:
UIComponent temp =  FacesContext.getCurrentInstance().getViewRoot().findComponent("dialog:dialog-body:mltext");
UIMltext myComponent = (UIMltext) temp;

During reading documentation I have found it is possible to "add" component in the JSF tree dynamicly with code like this:
public void addControls(ActionEvent actionEvent)
{
        Application application = FacesContext.getCurrentInstance().getApplication();
//Question: how to get controlPanel ???
        List children = controlPanel.getChildren();
        children.clear();
        for (int count = 0; count < numControls; count++)
        {
                HtmlOutputText output = (HtmlOutputText)application.createComponent(HtmlOutputText.COMPONENT_TYPE);
                output.setValue(" " + count + " ");
                output.setStyle("color: blue");
                children.add(output);
        }
}

Is it necessary in my component. What is the goal of adding component in the tree?

I can now do: "MyValue myValues = myComponent.getValue()"

Then I have to do somethink like:

backingBean.setValue1(myValues.getValue1());
backingBean.setValue2(myValues.getValue2());
...
backingBean.setValuex(myValues.getValuex());

Is it correct? I should prefer the setter are called by JSF layer. Is it possible?

Thanks a lot. 

Stéphane

Re: Needs help for creating a new JSF component

[Manfred Geiler <ma...@gmail.com>]

Questions like this on the users@myfaces.apache.org list please.
Thanks,
Manfred

On 5/22/07, Stephane.CLINCKART@ext.ec.europa.eu
<St...@ext.ec.europa.eu> wrote:
>
>
>
> Hi,
>
> I have to develop a new JSF component (component, tag and renderer).
>
> The goal of this new component is easy... Put together severals input zone
> in one single component.
>
> I have done somethink that works... But i'm not sure I did everything
> correctly. (in the State of Art)
> --> Should be great if I can get a link to a complete tutorial or full
> sample.
>
> I create some code I don't like:
> --> I have to "hardcoded" in the backingbean the "id" of my component and
> then cast it to my component.
> In my backingbean, the code looks like this:
> UIComponent temp =
> FacesContext.getCurrentInstance().getViewRoot().findComponent("dialog:dialog-body:mltext");
> UIMltext myComponent = (UIMltext) temp;
>
> During reading documentation I have found it is possible to "add" component
> in the JSF tree dynamicly with code like this:
> public void addControls(ActionEvent actionEvent)
> {
>         Application application =
> FacesContext.getCurrentInstance().getApplication();
> //Question: how to get controlPanel ???
>         List children = controlPanel.getChildren();
>         children.clear();
>         for (int count = 0; count < numControls; count++)
>         {
>                 HtmlOutputText output =
> (HtmlOutputText)application.createComponent(HtmlOutputText.COMPONENT_TYPE);
>                 output.setValue(" " + count + " ");
>                 output.setStyle("color: blue");
>                 children.add(output);
>         }
> }
>
> Is it necessary in my component. What is the goal of adding component in the
> tree?
>
> I can now do: "MyValue myValues = myComponent.getValue()"
>
> Then I have to do somethink like:
>
> backingBean.setValue1(myValues.getValue1());
> backingBean.setValue2(myValues.getValue2());
> ...
> backingBean.setValuex(myValues.getValuex());
>
> Is it correct? I should prefer the setter are called by JSF layer. Is it
> possible?
>
> Thanks a lot.
>
> Stéphane


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