Adjusting the IntelliSense Functionality in Monaco Editor

Currently, I am testing out the CompletionItemProvider feature for my project. I have implemented two separate CompletionItemProviders. One is set to trigger when any alphabet letter is typed and the other triggers when the user enters a single quote character (').

However, my aim is to restrict a specific completion provider to only appear when the user activates IntelliSense by pressing CTRL+SPACE inside double quotes. For example, when the user types ' here inside ', they should only see a particular set of completions as shown below. Is this achievable?

// will only activate when inside quotes
public areaCompletionProvider = <monaco.languages.CompletionItemProvider>{
    triggerCharacters: ['\''],
    provideCompletionItems: (model, position, token) => {
        let current = this.store[this.store.length - 1];
        if (!current) {
            return [];
        }

        let uniqueContextVariables: string[] = Array.from(new Set(current.contextVariables.map(ctxVariable => ctxVariable.area)));
        let areaCompletions = uniqueContextVariables.map(area => <monaco.languages.CompletionItem>{
            label: area,
            kind: monaco.languages.CompletionItemKind.Field,
        });

        return areaCompletions;
    }
};

Answer №1

I have managed to modify the IntelliSense behavior triggered by CTRL+SPACE within a string enclosed in quotes, although I am unsure if there is a more efficient solution.

By utilizing the findMatches method and Regular Expressions, I can determine whether the cursor is inside a string. If it is, I halt the completion process.

// Custom function for context variable and shortcut completion
public variableCompletionProvider = <monaco.languages.CompletionItemProvider>{
    triggerCharacters: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split(''),
    provideCompletionItems: (model, position, token) => {

        // Check if cursor is inside string quotes, and restrict variable completion accordingly
        var quotes = model.findMatches(`'([^'])*'`, true, true, true, null, true);
        if (quotes.length > 0) {
            for (let quote of quotes) {
                if (quote && (position.column >= quote.range.startColumn && position.column <= quote.range.endColumn)) {
                    return;
                }
            }
        }

         // Proceed with providing Completion if not inside a string
         // Insert additional code here...

    }
};

I am open to suggestions on improving this implementation, as it currently does not handle multiline strings. Any feedback or recommendations would be greatly appreciated.

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