Bug #12288: Wt 4.10.3: Javascript 'Wt internal error' when using a WMenu and disabled WLayout - Wt - Redmine

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Bug #12288

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Wt 4.10.3: Javascript 'Wt internal error' when using a WMenu and disabled WLayout

Added by Stefan Bn 11 months ago. Updated about 1 month ago.

Status:

InProgress

Priority:

Normal

Assignee:

Matthias Van Ceulebroeck

Target version:

4.11.2

Start date:

12/27/2023

Due date:

% Done:

Estimated time:

Description

Using Wt 4.10.3 I still get this Javascript error, which started appearing in 4.10.2. Probably it is related to the famous "Fix for 12006 causes exception".

Wt internal error; code: undefined, description: Wt4_10_3.$(...).layout is undefined

I did a long investigation and found out that this happens when using a WMenuItem that creates a disabled WPanel with a WLayout and child items. I extracted the essential code from my code basis.
Using the mini-sample attached, the error can be reproduced.

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main.cpp (1.8 KB) main.cpp		Stefan Bn, 12/27/2023 10:26 PM
Wt_internal_error.JPG (14.6 KB) Wt_internal_error.JPG		Stefan Bn, 12/27/2023 10:28 PM

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Updated by Matthias Van Ceulebroeck 11 months ago

Status changed from New to InProgress
Assignee set to Matthias Van Ceulebroeck
Target version set to 4.11.0

Hi Stefan,

famous as #12006 may be, it is not related to this. The issue popped up in 4.10.1, and is related to #10512, I believe. When the disabled state is propagated, it seems that the layout adjust is called too soon, before it is actually instantiated in the JS code.
Even though #10512 was tested thoroughly, it is impossible to catch all possible combinations and configurations of widgets, sadly. I am looking at creating tests to at least catch a lot of the more common cases.

Regardless, thank you for your submission.

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