Ok, what's "the correct implementation of tree"?

On May 3, 2013, at 4:48 PM, Benjamin <benjamin.vanryseghem.pharo@gmail.com>

�wrote:

> Use the correct implementation of tree, it will help :)
>
> Ben
>
> On May 3, 2013, at 3:49 PM, "roberto.minelli@usi.ch" <roberto.minelli@usi.ch> wrote:
>
>> I managed to accomplish the said behavior in this way
>>
>>> � � self
>>> � � � � � � on: (Character arrowRight asShortcut)
>>> � � � � � � do: [ :morph | | item |
>>> � � � � � � � � � � item := self selectedItem.
>>> � � � � � � � � � � morph selectedMorph toggleExpandedState.
>>> � � � � � � � � � � self updateTree.
>>> � � � � � � � � � � self selectedItem: item. ].
>>
>>
>> self is an instance of TreeModel.
>>
>> Is this the way it is supposed to be done? By the way Character arrowRight asShortcut does not always work: Sometimes it does not catch the event. And also the #selectedItem is not selected after expanding the node. Any intuition?
>>
>> Thanks in advance.
>>
>> Cheers,
>> R
>>
>> On May 3, 2013, at 12:02 PM, roberto.minelli@usi.ch wrote:
>>
>>> Hi,
>>>
>>> I built a TreeModel using Spec. I cannot find a way to expand the items in the model by using the left arrow on the keyboard. I cannot find neither the correct binding nor the correct message to call.
>>>
>>> Any hint here?
>>>
>>> Thanks in advance,
>>> R
>>
>>
>