Setting the arrayData to EMPTY acts the same as setting the arrayData
to some other array: the open nodes remain open. I even tried changing
the number of elements in the array to something as low as 1 but it
still remembered what nodes had been open when setting the arrayData
to something with more elements.
There are no properties in the dictionary that describe this type of
operation. The closest I could find was hilitedElement but that
doesn't actually open or close a node leaf. In fact, if you set the
hilitedElement to a node that isn't open it will hilite the next node
that is open instead. (bug?)
This isn't critical for this project as it is just an internal tool
that only I use, but the only workaround I could come up with is to
delete the widget and then create the widget again via script along
with all the attributes.
--Andrew Bell
Date: Wed, 13 Jun 2018 23:02:52 +0100
From: Alex Tweedly <a...@tweedly.net>
Subject: Re: Close nodes in Tree View widget
I can't try it out right now - but would it be any good to set the
arraydata to empty, and then load the new values you want ? That might
(effectively) delete and recreate the relevant nodes, and thereby reset
the status of the leaf nodes.
Alex.
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