Hi,

yes, it is better, but it does not work intuitively. Try the following: 

1. execute your script,
2. click on 4 (selection), 
3. click on 8 (selection),
4. click on 4 (deselection),
5. click on 4 (selection)

You can see that the third list still keeps the number 8. It is necessary to deselect 8 in order to see 4. 

This part explains to me how the transmit works:

```
tabulator transmit 
from: #one; to: #three;
from: #two; to: #three;
transformed: [ :x :y | y ifNil: [ x ] ifNotNil: [ y ] ];
andShow: [ :a | 
a fastList display: [ :x | Array with: x ] ].
```

By using #transformed: I can decide what to use (#one or #two). It is nice feature!

I think what I need is having to possibility to change the third list also according to what list is active (#one or #two). 
In the first screenshot, the first list is active (blue border). In the second screenshot, the second list is active. 
So I would like to update the third list according to the active one. 
Is it possible?


Thanks!
Juraj

On Apr 3, 2017, at 18:53, Andrei Chis <chisvasileandrei@gmail.com> wrote:

Hi,

That's actually the default behavior, but I see there is also a bug.
Normally if you want to allow deselection in a presentation you should use allowDeselection. Just I see there is a bug in the fast table renderer because if I add #allowDeselection to the first presentation when clicking again on the selected element the selection port is not cleared. If you use #list instead of #fastList it works.

I think you can get the desired behaviur using this code:

-----------------------------------------------------------------
tabulator := GLMTabulator new.

tabulator column: #one; column: #two; column: #three.

tabulator transmit to: #one; andShow: [ :composite |
composite list 
allowDeselection;
display: [ :x | Array with: x ] ].
tabulator transmit to: #two; andShow: [ :composite |
composite list
allowDeselection;
display: [ :x | Array with: 2 * x ] ].

tabulator transmit 
from: #one; to: #three;
from: #two; to: #three;
transformed: [ :x :y | y ifNil: [ x ] ifNotNil: [ y ] ];
andShow: [ :a | 
a fastList display: [ :x | Array with: x ] ].

tabulator openOn: 4.
-----------------------------------------------------------------


Cheers,
Andrei

On Mon, Apr 3, 2017 at 9:35 PM, Juraj Kubelka <juraj.kubelka@icloud.com> wrote:
Hi!

If you create the following Glamour browser:

```
tabulator := GLMTabulator new.

tabulator column: #one; column: #two; column: #three.

tabulator transmit to: #one; andShow: [ :composite |
composite fastList display: [ :x | Array with: x ] ].
tabulator transmit to: #two; andShow: [ :composite |
composite fastList display: [ :x | Array with: 2 * x ] ].

tabulator transmit from: #one; to: #three; andShow: [ :a | 
a fastList display: [ :x | Array with: x ] ].
tabulator transmit from: #two; to: #three; andShow: [ :a | 
a fastList display: [ :x | Array with: x ] ].

tabulator openOn: 4.
```

You will get the following browser: 

<Screen Shot 2017-04-03 at 16.30.28.png>

if you then select 4, the third list appears. If you then select 8, the value is changed:

<Screen Shot 2017-04-03 at 16.29.38.png>

But since then, the third list does not change. It stays with 8 value forever. 

Do I miss something? Should I define it differently? 
Or if it is a bug: Can you give me insights how to fix it?

Tested in the latest Pharo 6.

Thanks!
Juraj