Re: some newbie questions

At 01:00 AM 10/9/2010, you wrote:
>... I can't see why the exact piece of code you posted should fail. You've
>got probably more going on.

ok.

>You can avoid this problem if you programmatically construct the page.
>Thus, the html should contain only a <div> with an ID, which you get
>through RootPanel.get(id) and then you keep adding your widgets to
>that.

ok. i can do that. but does it have to be a div? i want to arrange
buttons and statuses in row?

the widgets that i attach will be just buttons and labels (i guess).
my static html looks like:

<div id="hookForCommand1"></div>
<div id="hookForStatusForCommand1"></div>
<div id="hookForCommand2"></div>
<div id="hookForStatusForCommand2"></div>

>If you prefer designing your page as static html and wrapping widgets
>around them you need to understand how the widget hierarchy works. For
>my taste, it's ill-documented but follows more or less this rule: if
>widget A contains widget B, you need to attach first widget B and then
>A. ...

ok,. i think i can avoid those problems now.

thanks

>On Oct 9, 4:15 am, Ray Tayek <rta...@ca.rr.com> wrote:
> > hi, starting a project using eclipse galileo and a week old download
> > of gwt eclipse plugin..
> >
> > i sometime get a: "A widget that has an existing parent widget may
> > not be added to the detach list" error when doing the following
> type of thing:
> >
> > //<div id="bar">static bar</div>
> > Label bar = new Label("bar label);
> > bar.getElement().setId("barid");
> > RootPanel.get("bar").add(bar);
> > RootPanel rp = RootPanel.get("barid");
> >
> > this usually fails. doesn't seem to matter whether bar is a panel, an
> > html, or a label (does seem to work with buttons though). seems like
> > i am not using gwt properly and breaking some rule
> like:http://markmail.org/message/l3okzeqycanf5alg
> >
> > can someone point me to some doc on this?
> >
> > also, i am using gwt-logger. when this crashes, i get this big grey
> > thing that says: "GWT Code Server Disconnected " which hides the log
> > stiff and my html stuff. i have poor vision, is there some way to
> > move the thing that has the "GWT Code Server Disconnected " so i can
> > see what's underneath?
> >
> > what i am trying to do is to wire up a bunch of buttons (each of
> > which makes an rpc call) with their corresponding status/result
> > widgets. the staus/result can be just text for now (maybe some
> > graphic that changes later).
> >
> > the button case fails if i try to do a RootPanel.get() immediately.
> > if i do it in a click handler, it seems to work ok, so maybe it's a
> > timing problem? ...

---
co-chair http://ocjug.org/

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