[Pharo-dev] [Spec] whenSelectedItemsChanged: on TreeModel

Martin Dias tinchodias at gmail.com
Wed Apr 2 07:29:07 EDT 2014


I still can reproduce this issue in Pharo 30807 (last image). I'm trying to
workaround it with some problems.

I ignore if this is already reported in fogbugs. Steps to reproduce:

a) do it:

TreeModel new
roots: (1 to: 2);
whenSelectedItemsChanged: [ :items |  self logCr: items ];

=> in Transcript I see:

b) during initial do it:


c) after a click on 2:

an OrderedCollection(2)

d) after a click on 1:

an OrderedCollection(2)
an OrderedCollection(2)
an OrderedCollection(1)


On Wed, Dec 11, 2013 at 6:10 PM, Benjamin <
Benjamin.VanRyseghem.Pharo at gmail.com> wrote:

> As I said to Martin, I will investigate why, but it's a bit tricky
> Must be some issue in MorphTreeMorph I introduced recently
> Ben
> On 11 Dec 2013, at 16:46, Roberto Minelli <roberto.minelli at usi.ch> wrote:
> Hi,
> I am experiencing problems with #whenSelectedItemsChanged: on a TreeModel.
> In particular, the block (i.e., argument of #whenSelectedItemsChanged:
> gets randomly executed a couple of times (3/4) the second time that the
> selection happens. The first time is fine. It looks like the registration
> of the "event" or "announcement" is done multiple times.
> Any hint?
> Cheers,
> R
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