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TreeView Drag&Drop: browser hangs when "demoting" father to grand-child #955
Description
Tiago (ITG) asked 2017-07-23 02:49:59 UTC
WinForms and Wisej samples attached. Just grab the DRAG ME node and drop it on DROP HERE node.
Before D&D, DROP HERE is child of DRAG ME. After D&D, DROP HERE is father of DRAG ME. So DRAG ME is "demoted" to a child of its own child and the browser hangs. Try to use Chrome. After the broser hangs, open another tab on the same URL http://localhost:38844. The new tab shows DROP ME on the correct place (but with no icon).
The main issue is the browser hang. After that issue is solved, I guess the icon issue will also be solved.
Activity
itg-assistant commentedon Jun 12, 2026
Frank (ITG) answered 2017-07-24 18:39:41 UTC
Hi Tiago,
thanks for your sample, it uncovered 2 issues:
WJ-8357 - TreeNode may not show the icon initially
(Caused by a low level bug in qooxdoo, when changing the source of an image, it aborts loading the previous image even if it´s used by another widget)
WJ-8360 - Changing the parent of a node in a Tree View can cause a freezing of the application due to a temporary circular ownership
Both issues are fixed and will be included in the next Wisej build. We´ll keep you updated when it´s available.
Best regards
Frank
itg-assistant commentedon Jun 12, 2026
Frank (ITG) answered 2017-08-13 22:35:32 UTC
Hi Tiago,
WJ-8357 and WJ-8360 are fixed in the latest Wisej release (1.3.82).
Best regards
Frank