Code completion doesn't trigger automatically for imports/slashes/interpolation in LSP

[tomasbaran]

Describe the bug
It doesn't autocomplete package in VS Code. It's a pain in the butt now.

To Reproduce
Steps to reproduce the behavior:

1. write import 'mate

Expected behavior
import 'package:flutter/material.dart';

Screenshots

Versions (please complete the following information):

• VS Code version: 1.54.2
• Dart extension version: Awesome Flutter Snippets: v2.0.4
• Flutter (Channel beta, 2.0.1, on macOS 11.1 20C69 darwin-x64, locale es-ES)
• Dart SDK version: 2.10.5 (stable) (Tue Jan 19 13:05:37 2021 +0100) on "macos_x64"

[DanTup]

Thanks for the issue! This is a known limitation when using LSP that hasn't been resolved yet.

In case you're not away - you can manually invoke completion with Cmd/ Ctrl+Space which will open the list. The only thing missing is that it doesn't open automatically when pressing the '.

I'll keep this issue open to track supporting this in LSP.

[tomasbaran]

Thanks @DanTup but how come this issue was NOT present before?

[tomasbaran]

@DanTup Please, how can I manually invoke completion again? pressing cmd+space on Mac opens the macOS search Spotlight.

[DanTup]

Thanks @DanTup but how come this issue was NOT present before?

In the original code there are some hacks to make this work:

Dart-Code/src/extension/providers/dart_completion_item_provider.ts

Lines 68 to 81 in 7a270e1

	if (context.triggerKind === CompletionTriggerKind.TriggerCharacter) {
	switch (context.triggerCharacter) {
	case "{":
	return line.endsWith("${");
	case "'":
	return line.endsWith("import '") || line.endsWith("export '");
	case "\"":
	return line.endsWith("import \"") || line.endsWith("export \"");
	case "/":
	case "\\":
	return line.startsWith("import \"") || line.startsWith("export \"")
	|| line.startsWith("import '") || line.startsWith("export '");
	}
	}

We're in the process of moving to LSP for the language server, which isn't so easy to do something like that. It's possible to fix (and will be fixed), but it wasn't considered critical for the migration so hasn't been done yet.

pressing cmd+space on Mac opens the macOS search Spotlight.

Sorry, I gave the wrong combo - it's Ctrl+Space even on Mac!

[tomasbaran]

Sorry, I gave the wrong combo - it's Ctrl+Space even on Mac!

My mac (I guess all do but maybe I'm wrong) have ctrl+space is set for changing keyboard language. Even when I undo this system shortcut, autocompletion still does NOT work. Any tips, please?

[DanTup]

I don't know why it wouldn't work - it's VS Code functionality rather than Dart, but you can see/re-bind the shortcut in the VS Code Keyboard Shortcuts editor. (it's the top item here called "Trigger Suggest"):

Hope this helps!

[tomasbaran]

Thanks. Maybe all I had to was restart the IDE after unselecting the system shortcut for changing keyboard language.

Cheers,