File structure popup is empty but structure view works

IntelliJ Platform
1

Hi,
I have implemented a custom structure view (alt+7) for custom files and it works as expected. But the file structure popup (ctrl+F12) always shows “Structure is empty”.

What I did

  1. Implemented and registered a
    CustomStructureViewFactory implements PsiStructureViewFactory
    along with
    CustomStructureViewModel extends StructureViewModelBase implements StructureViewModel.ElementInfoProvider
    and
    CustomStructureViewElement implements StructureViewTreeElement
  2. Open a file that triggers the CustomStructureViewFactory
  3. Open the structure view (alt+7) and see that it works
  4. Open the file structure popup (ctrl+F12) and see “Structure is empty”

Expected result:

If the structure view is populated correctly with the desired elements, the file structure popup should be too.

Actual result:

The file structure popup remains empty.

image
image719×481 11.4 KB

When debugging I can confirm that the methods getPresentation() and getChildren() in my StructureViewTreeElement class are being called when pressing ctrl+F12 and seemingly perform correctly.

What could be the issue? Am I missing a class or method I need to implement for the file structure popup to work?

I do see warnings and SEVERE flags in the log regarding StructureViewComponent.class (InvalidMirrorException) but unfortunately that does not tell me much.

Environment #

OS version: Win 11 10.0.26100

IDE version: IntelliJ IDEA 2024.3.2.1 (Ultimate Edition)
Build #IU-243.23654.153, built on January 23, 2025

2

Hi. Take a look at this:

3

Interesting. It’s a similar problem, but the other way around (structure view empty instead of popup). Unfortunately, disabling the logical structure via that registry key did not work for me.

4

Could you please share sources of your plugin?