Opening All Tree Nodes

[gkipe]

Is there an easy way to open all tree nodes? What action? I want to build my tree and walk the tree and expand every node when my window opens?
Thanks,Garet

[nmongeau]

You need to send #expandItem: to the tree for each node.

Something like (for 1st level items only in this case)

myTree items do:
[:each |
myTree expandItem: each].

Normand

[gkipe]

Yes I did that, but got a screen painting walkback when I would expand an item that was on the bottom of screen ( not visible ). So I tried to scroll down the container while I expanded, havent gotten that to work. I was thinking there was a slick property/action I can set or use, or someone has done this in the past.

[nmongeau]

Hmm yes that rings a bell. We do have lots of code in that area, and it seems that we prevent the tree from drawing while we expand.

Try something like this (with a breach of encapsulation):

myTree primaryWidget deferRedraw:
{ myTree items do:
[:each |
myTree expandItem: each]].

Normand

[Michael Keppler]

I'm not sure, what widget that is (I'm no UI developer), but at least EwTableTree has an expandAll method, which does all that (and even sets the waiting cursor). And in our image, EwIconTree uses the same implementation of expandAll.