[news.eclipse.platform.rcp] Re: How to get form MessageManager?

[Thomas Fahrmeyer <lauritziu_ii@xxxxxxxx>]

Hi Josip,

JMaslac schrieb:
> Hi, Thomas!
>
> Thanks for the help. Works like a charm! :)
> I found out that something like:
>
> IMessageManager manager = new MessageManager();
>
> also works, but because MessageManager is in a package marked internal, the
> use of it is discouraged.

That's the point.

> So, I'll stick with your code! :)
>
> Btw, if you are willin to share to code for the mentioned bridge between
> Databinding and message manager I would be grateful!! Because, and that's
> not hard to guess:), that's exactly what I need to implement also..

Sure, I'm willing to share some of my code regarding databinding, form 
handling and message handling. I attached a complete Eclipse project 
with working code that shows my form handling functionality.

The project defines a view "Sample View" with  contains just two input 
fields. The top one validates the given input on Focus out, the bottom 
one while modifying. The internal validate is stupid and just enforces, 
that the given text starts with "IPC". If not, you'll see the error 
message above the form.

There is a big class involved - the FormManager. If you have a look at 
it, I suppose, it seems very complicated to you :) In our project we 
build it to have a framework class which is responsible for creating all 
controls which gets part of a form. That gives us the chance to control 
something like the binding and messaging. There some kind of layout 
setup, but you can ignore that. The important methods are:

- setBinding(): which can be refactored because of duplicate code
- connectBindingToMessageManager(): does what you really want :)

We introduced an abstraction for the databinding found in 
**DataBindingConfig**. With that, a binding between a model object and a 
property can be defined for a control under respect of a update strategy 
with an optional validator.

In SampleView.createPartControl() you can see the setup.

I hope you understand how it's working. If you have further questions, I 
'm observing the topic :)

bye
Thomas



> Josip.
>
>
> "Thomas Fahrmeyer" <lauritziu_ii@xxxxxxxx> wrote in message
> news:frdab6$ifi$1@xxxxxxxxxxxxxxxxxxxx
> > Hi,
> >
> > what I did to make it work was to create a ManagedForm:
> >
> > IMessageManager manager = new ManagedForm(m_formToolkit,
> > m_form).getMessageManager();
> >
> > In all my code I'm using m_form instead of the managed form being created.
> > It recognized no side effects. I used the message manager a lot. I
> > implemented a bridge between Databinding and the message manager, to get
> > validation messages to be shown in the message area. Works like a charm :)
> >
> > -Thomas
> >
> >
> > JMaslac schrieb:
> > > Hi,
> > >
> > > I'm using eclipse forms. I have a view and in it I've created a form. The
> > > question is - how can I get/create MessageManager that's associated with
> > > that form?
> > >
> > > My code is as follows:
> > >
> > > ----
> > >   public void createPartControl(final Composite p_parent) {
> > >
> > >     m_formToolkit = new FormToolkit(p_parent.getDisplay());
> > >     m_form = m_formToolkit.createForm(p_parent);
> > >     m_formBody = m_form.getBody();
> > > ....
> > > -----
> > >
> > > I've seen how it's done in org.eclipse.ui.forms.example's
> > > ErrorMessagesPage.java (managedForm.getMessageManager();) but that
> > > doesn't help me much. At least I don't see how because I don't have
> > > managed form in my program.
> > >
> > > Thanks,
> > >
> > > Josip

Attachment: FormsSample.zip
Description: Zip archive