On 21 sep, 23:13, Damon Lundin <[email protected]> wrote:
> I am attempting to use the new GWT LayoutPanels and unfortunately they
> are causing me some grief.  We are using the layout panels
> (RootLayoutPanel, DockLayoutPanel, LayoutPanel, etc) to arrange the
> overall layout of the panel.  Then, the children of one of these
> panels needs to know how big it is so that it can size one of its
> children properly to cause a scroll bar to appear.  Generally you do
> this by calling getOffsetWidth and getOffsetHeight.  I know that these
> methods will return 0 if the widget is not attached but I am finding
> that in even putting the calls in onLoad, these methods are still
> returning 0.  Clearly I don't understand when GWT and/or the browser
> figures out what the sizes of these layout panels are.
>
> Below is a simplification of my problem.  The widget added to the
> RootLayoutPanel cannot determine its size when it is attached to the
> DOM.  I made sure the widget had something in it and to prove that it
> ends up with a size, I added the call to the deferred command to
> display the size again.
>
> If you simply replace "RootLayoutPanel" with "RootPanel" then it will
> output a size.  What am I doing wrong here?

How about implementing RequiresResize and doing the job in onResize()?

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