Some times ago, I inserted an exception handler somewhere that catch the exception the code user may throw. This is not the best way to deal with exception, but Pharo does not make things easy. If you have a wrong behavior in your [:each | ... ] block that you provide to width: or height:, you can freeze your image. The problem comes from Morphic I guess. Displaying the widget as red indicates that there is an error.
If you have a better implementation for handling exception, I will delighted to discuss about. But I fear that there is no easy solution for now.
Alexandre
On 16 Jun 2010, at 03:58, Laval Jannik wrote:
> Hi,
>
> I tried to make a script for Mondrian and I made a writing error.
> I put a bloc on borderColor: without the bloc parameter.
>
> The reaction of Mondrian is strange: Rectangle becomes red.....
> When I remove the bloc or I put the bloc parameter (as: [:e | Color gray]), it works fine.
>
> Here is the small script to test:
> =============
> |view o o2|
> view := MOViewRenderer new.
> o := OrderedCollection new: 1000.
> o2 := #(1 2 3 4 5 6 7 8 9 10).
> 1 to: 100 do:[:i | o add: i].
> (view shape: (MORectangleShape new
> width: 200;
> height: 200;
> withBorder;
> borderColor: [Color gray])).
> view nodes: o.
> view layout: (MOGridLayout new gapSize: 1).
> view open
> =============
>
> Cheers
> ---
> Jannik Laval
>
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