Class MultiLinePrompt

packages/core/src/prompts/multi-line.ts:15–154

}

export default class MultiLinePrompt extends Prompt<string> {
	#lastKeyWasReturn = false;
	#showSubmit: boolean;
	public focused: 'editor' | 'submit' = 'editor';

	get userInputWithCursor() {
		if (this.state === 'submit') {
			return this.userInput;
		}
		const userInput = this.userInput;
		if (this.cursor >= userInput.length) {
			return `${userInput}█`;
		}
		const s1 = userInput.slice(0, this.cursor);
		const s2 = userInput[this.cursor];
		const s3 = userInput.slice(this.cursor + 1);
		if (s2 === '\n') return `${s1}█\n${s3}`;
		return `${s1}${styleText('inverse', s2)}${s3}`;
	}
	get cursor() {
		return this._cursor;
	}
	#insertAtCursor(char: string) {
		if (this.userInput.length === 0) {
			this._setUserInput(char);
			return;
		}
		this._setUserInput(
			this.userInput.slice(0, this.cursor) + char + this.userInput.slice(this.cursor)
		);
	}
	#handleCursor(key?: CursorAction) {
		const text = this.value ?? '';
		switch (key) {
			case 'up':
				this._cursor = findTextCursor(this._cursor, 0, -1, text);
				return;
			case 'down':
				this._cursor = findTextCursor(this._cursor, 0, 1, text);
				return;
			case 'left':
				this._cursor = findTextCursor(this._cursor, -1, 0, text);
				return;
			case 'right':
				this._cursor = findTextCursor(this._cursor, 1, 0, text);
				return;
		}
	}

	protected override _shouldSubmit(_char: string | undefined, _key: Key): boolean {
		if (this.#showSubmit) {
			if (this.focused === 'submit') {
				return true;
			}
			this.#insertAtCursor('\n');
			this._cursor++;
			return false;
		}