Method #onKey

packages/core/src/prompts/date.ts:270–407

(char: string | undefined, key: Key)

	}

	#onKey(char: string | undefined, key: Key) {
		// Backspace
		const isBackspace =
			key?.name === 'backspace' ||
			key?.sequence === '\x7f' ||
			key?.sequence === '\b' ||
			char === '\x7f' ||
			char === '\b';
		if (isBackspace) {
			this.inlineError = '';
			const ctx = this.#seg();
			if (!ctx) return;
			if (!this.#segmentValues[ctx.segment.type].replace(/_/g, '')) {
				this.#navigate(-1);
				return;
			}
			this.#segmentValues[ctx.segment.type] = '_'.repeat(ctx.segment.len);
			this.#segmentSelected = true;
			this.#cursor.positionInSegment = 0;
			this.#refresh();
			return;
		}

		// Tab navigation
		if (key?.name === 'tab') {
			this.inlineError = '';
			const ctx = this.#seg();
			if (!ctx) return;
			const dir = key.shift ? -1 : 1;
			const next = ctx.index + dir;
			if (next >= 0 && next < this.#segments.length) {
				this.#cursor.segmentIndex = next;
				this.#cursor.positionInSegment = 0;
				this.#segmentSelected = true;
			}
			return;
		}

		// Digit input
		if (char && /^[0-9]$/.test(char)) {
			const ctx = this.#seg();
			if (!ctx) return;
			const { segment } = ctx;
			const isBlank = !this.#segmentValues[segment.type].replace(/_/g, '');

			// Pending tens digit: complete the two-digit entry
			if (this.#segmentSelected && this.#pendingTensDigit !== null && !isBlank) {
				const newVal = this.#pendingTensDigit + char;
				const newParts = { ...this.#segmentValues, [segment.type]: newVal };
				const err = this.#validateSegment(newParts, segment);
				if (err) {
					this.inlineError = err;
					this.#pendingTensDigit = null;
					this.#segmentSelected = false;
					return;
				}
				this.inlineError = '';
				this.#segmentValues[segment.type] = newVal;