DialogBox sized inside out with scrollpanel trick/tip/workaround

Hi,

First of all I am aware of
https://code.google.com/p/google-web-toolkit/issues/detail?id=889

I think I have a different problem and I would like to ask if this is expected behavior.

I have the following layout DialogBox/ScrollPanel/CellTable

I want the DialogBox to be size inside-out - meaning to take its size from the CellTable.

This is not working as I am getting wrong (zero?) widths and heights in my callback. However it works perfectly in Chrome and Firefox (don't know about IE) if I call the callback from a deferred command.

Now if you get a little more creative you can set the size of the scrollpanel during the setPosition() so you can avoid toggling scrollbars on the main window or getting out of the screen anyway.

--------------

    @Override
    public void setPopupPositionAndShow() {
        setVisible(false);
        super.show();

        // we want to avoid jumping effects

        setVisible(false);
        Scheduler.get().scheduleDeferred(new ScheduledCommand() {
            @Override
            public void execute() {
                callback.setPosition(getOffsetWidth(), getOffsetHeight());
                setVisible(true);
            }
        });
    }

-------- found in original PopupPanel (ancestor of DialogBox)

    public void setPopupPositionAndShow(PositionCallback callback) {
        setVisible(false);
        show();
        callback.setPosition(getOffsetWidth(), getOffsetHeight());
        setVisible(true);
    }
-----------------

So is this normal? The documentation seems to expect that kind of behavior without the need of the extra deferring command.

--

Vassilis Virvilis

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