Implement Type Hierarchy for LSP

[zhengger]

How can I revover this function? Thanks!
My IDE:
Name: Visual Studio Code
Version: 1.45.1
Commit: 5763d909d5f12fe19f215cbfdd29a91c0fa9208a
Date: 2020-05-14T08:33:47.663Z
Electron: 7.2.4
Chrome: 78.0.3904.130
Node.js: 12.8.1
V8: 7.8.279.23-electron.0
OS: Darwin x64 18.7.0

My Flutter and Dart SDK :3.11.0

[DanTup]

It seems like the Dart extension may not have activated correctly (there should be a Dart or Flutter version number in the status bar when it has).

Can you check Help -> Toggle Developer Tools and see if there are any errors listed about the extension failing to activate?

Thanks!

[zhengger]

@DanTup
Hi Dan,
Thank you.
I think the extension should have been activated cause all works well except the "showTypeHierarch" function.
How can I check the errors in the Developer Tools. Here are two screenshot I took just:

[DanTup]

Ah, ok - in the original screenshot it didn't show Flutter/Dart versions in the status bar, but your latest one does. Are you using the LSP preview mode ("dart.previewLsp": true in your VS Code user settings)?

[zhengger]

Ah, ok - in the original screenshot it didn't show Flutter/Dart versions in the status bar, but your latest one does. Are you using the LSP preview mode ("dart.previewLsp": true in your VS Code user settings)?

Hi Dan, @DanTup
I have tried both cases. The 'dart.showTypeHierarchy' error happened always.
Case 1: "dart.previewLsp": false:

Case 2: "dart.previewLsp": true:

[zhengger]

Update:
After I removed all costumed entries related with Dart/Flutter in settings.json file of VS CODE, the Hierarchy function works now. So I'll close this post now.
Thanks Dan.

[DanTup]

I think this is a bug that it doesn't work for LSP (eg. when you have "dart.previewLsp": true in settings). Since the goal is to move everything to LSP, this will need fixing.