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BoundTreeView - strange child TreeNodes behaviour #1004
Description
Tiago (ITG) asked 2017-08-14 01:03:32 UTC
I know BoundTreeView and BoundTreeNode aren't Wisej controls. Nevertheless I need help figuring out what's going on.
When the bound TreeView is first drawn, everything is all right. Then I have 2 issues:
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When I click on Refresh once, all child TreeNodes get a bigger "margin", meaning increased left/top/bottom spacing. This happens only with child, not the root TreeNodes.
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When I click on Refresh a second time, all grand child TreeNodes show the Text on the left side. Root and child TreeNodes continue to show the text on the right side. I tried to draw a wider TreeView but the problem persists.
I make sure all TreeNode are disposed by:
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using Nodes.Clear(true) on the TreeView
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using Dispose(true) and make sure to dispose child on the TreeNode
Interesting enough, if I use Nodes.Clear() instead of Nodes.Clear(true) on TreeView, the issue 2. doesn't show. And if I keep clicking on Refresh, sometimes the child nodes get closer again and then get a bigger margin again.
As usual I attach a WinForms / Wisej sample.
P. S. - I'm using 1.3.82 but the problem existed also on the previous release.
Activity
itg-assistant commentedon Jun 12, 2026
Luca answered 2017-08-14 16:39:52 UTC
Great catch. The size problem is caused by the png icons "pushing" out. The size in the theme is 16x16 which works fine the first time the nodes are loaded. When the nodes are updated/replaced, the code in the widget fails to enforce the icon size. Will log the bug shortly.
The other error is a client side error that I haven't tracked down yet. It appears that the client widget is trying to display nodes without an element since they have been disposed. This is a bug too.
Thanks!
/Luca
itg-assistant commentedon Jun 12, 2026
Tiago (ITG) answered 2017-08-14 19:12:36 UTC
Thanks for the answer Luca. As a side question, how do you track errors like this? Do you catch the JSON packet and analyse it or do you have to set breakpoints on Wisej Javascript library?
itg-assistant commentedon Jun 12, 2026
Luca answered 2017-08-14 19:21:18 UTC
F12 in Chrome. The console should log errors in red. Wisej/qooxdoo have an extensive logging system. Then from there you can put breaks or additional log traces in Wisej.js or qx.js. They are not minified in debug mode and the full source code with comments is available.
itg-assistant commentedon Jun 12, 2026
Tiago (ITG) answered 2017-08-14 22:12:56 UTC
I suppose this means I can do it myself.
itg-assistant commentedon Jun 12, 2026
Frank (ITG) answered 2017-08-27 22:09:34 UTC
Hi Tiago,
the issue # is WJ-8385 and it is fixed in Wisej 1.4.20.
Best regards
Frank