svelte-kit-vice/src/uix/terra/time-range-field/components/time-range-field.svelte

<script lang="ts">
	import { watch } from "runed";
	import { readableActive, writableActive, createId, mergeProps } from "../../utils/index";
	const noop = () => {};
	import { getDefaultTime, type TimeRange, type TimeValue } from "$terra/adapters/dates";
	import { resolveHourCycleProp, resolveLocaleProp } from "../../base/config/prop-resolvers.ts";
	import { TimeRangeFieldRootState } from "../time-range-field.svelte.ts";
	import type { TimeRangeFieldRootProps } from "../types.js";

	const uid = $props.id();

	let {
		id = createId(uid),
		ref = $bindable(null),
		value = $bindable(),
		onValueChange = noop,
		placeholder = $bindable(),
		onPlaceholderChange = noop,
		disabled = false,
		readonly = false,
		required = false,
		hourCycle,
		timeFormat,
		granularity,
		locale,
		hideTimeZone = false,
		validate = noop,
		onInvalid = noop,
		maxValue,
		minValue,
		readonlySegments = [],
		children,
		child,
		onStartValueChange = noop,
		onEndValueChange = noop,
		errorMessageId,
		...restProps
	}: TimeRangeFieldRootProps<TimeValue> = $props();

	let startValue = $state<TimeValue | undefined>(value?.start);
	let endValue = $state<TimeValue | undefined>(value?.end);

	function handleDefaultPlaceholder() {
		if (placeholder !== undefined) return;
		const defaultPlaceholder = getDefaultTime({
			granularity,
			defaultValue: value?.start,
		});
		placeholder = defaultPlaceholder;
	}

	handleDefaultPlaceholder();

	watch.pre(
		() => placeholder,
		() => {
			handleDefaultPlaceholder();
		}
	);

	function handleDefaultValue() {
		if (value !== undefined) return;
		value = { start: undefined, end: undefined };
	}

	handleDefaultValue();

	watch.pre(
		() => value,
		() => {
			handleDefaultValue();
		}
	);

	const rootState = TimeRangeFieldRootState.create({
		id: readableActive(() => id),
		ref: writableActive(
			() => ref,
			(v) => (ref = v)
		),
		disabled: readableActive(() => disabled),
		readonly: readableActive(() => readonly),
		required: readableActive(() => required),
		hourCycle: resolveHourCycleProp(() => timeFormat, () => hourCycle),
		granularity: readableActive(() => granularity),
		locale: resolveLocaleProp(() => locale),
		hideTimeZone: readableActive(() => hideTimeZone),
		validate: readableActive(() => validate),
		maxValue: readableActive(() => maxValue),
		minValue: readableActive(() => minValue),
		placeholder: writableActive(
			() => placeholder as TimeValue,
			(v) => {
				placeholder = v;
				onPlaceholderChange(v);
			}
		),
		readonlySegments: readableActive(() => readonlySegments),
		value: writableActive(
			() => value as TimeRange<TimeValue>,
			(v) => {
				value = v;
				onValueChange(v);
			}
		),
		startValue: writableActive(
			() => startValue,
			(v) => {
				startValue = v;
				onStartValueChange(v);
			}
		),
		endValue: writableActive(
			() => endValue,
			(v) => {
				endValue = v;
				onEndValueChange(v);
			}
		),
		onInvalid: readableActive(() => onInvalid),
		errorMessageId: readableActive(() => errorMessageId),
	});

	const mergedProps = $derived(mergeProps(restProps, rootState.props));
</script>

{#if child}
	{@render child({ props: mergedProps })}
{:else}
	<div {...mergedProps}>
		{@render children?.()}
	</div>
{/if}