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RegisterCompletionItemProvider problem #138

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elgransan opened this issue Aug 16, 2024 · 2 comments
Closed

RegisterCompletionItemProvider problem #138

elgransan opened this issue Aug 16, 2024 · 2 comments

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@elgransan
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Hi, thanks for the port It's awesome.
I want to get the code selection from the provideCompletionItems delegate, like the javascript example on the Monaco playground:

monaco.languages.registerCompletionItemProvider("json", {
	provideCompletionItems: function (model, position) {
		var word = model.getWordUntilPosition(position);   <-- this
		var range = {
			startLineNumber: position.lineNumber,
			endLineNumber: position.lineNumber,
			startColumn: word.startColumn,
			endColumn: word.endColumn,
		};
		return {
			suggestions: createDependencyProposals(range),
		};
	},
});

But the wrapper sends a "modelUri" not the model itself, how can I convert this string to the real object? I tried using
BlazorMonaco.Editor.Global.GetModel(JsRuntime, modelUri); or also _editor.GetSelection() but there are not allowed async operations.

Thanks!
@brettwinters
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I have no idea also, but it seems you have to do something like this:

 await Global.RegisterCompletionItemProvider(JsRuntime, "sql", (model, position, context) =>
        {
            ArgumentNullException.ThrowIfNull(_editor);
            
            var text = _editor.GetModel().Result;
            var pos = _editor.GetPosition().Result;
            var word = text.GetWordUntilPosition(pos).Result.Word;

            if (word is not null &&
                word.Trim().EndsWith("FROM", StringComparison.InvariantCultureIgnoreCase))
            {
                   // return your list 
            }
}

In blazor this doesn't work because you can't call .Result on async methods so I'm trying to figure that out now...

@serdarciplak
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Owner

In v3.3.0, async support is added to the RegisterCompletionItemProvider method. So, you can do something like below. I'll release that version in a few days.

await BlazorMonaco.Languages.Global.RegisterCompletionItemProvider(jsRuntime, "javascript", async (modelUri, position, context) =>
{
    var model = await BlazorMonaco.Editor.Global.GetModel(jsRuntime, modelUri);
    var word = await model.GetWordUntilPosition(position);
    var range = new BlazorMonaco.Range
    {
        StartLineNumber = position.LineNumber,
        EndLineNumber = position.LineNumber,
        StartColumn = word.StartColumn,
        EndColumn = word.EndColumn,
    };
    return new CompletionList
    {
        Suggestions = createDependencyProposals(range)
    };
}

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3 participants
@elgransan @brettwinters @serdarciplak