feat(ui): add id prop for inputs

packages/ui/src/lib/inputs/Number.svelte

@@ -0,0 +1,169 @@
+<script lang="ts">
+	interface Props {
+		value?: number;
+		step?: number;
+		min?: number;
+		max?: number;
+		id?: string;
+	}
+
+	let {
+		value = $bindable(1),
+		step = 1,
+		min = $bindable(0),
+		max = $bindable(1),
+		id
+	}: Props = $props();
+
+	if (min > max) {
+		[min, max] = [max, min];
+	}
+	if (value > max) {
+		max = value;
+	}
+
+	function strip(input: number) {
+		return +parseFloat(input + '').toPrecision(2);
+	}
+
+	let inputEl: HTMLInputElement | undefined = $state();
+
+	let prev = -1;
+	function update() {
+		if (prev === value) return;
+		if (value.toString().length > 5) {
+			value = strip(value);
+		}
+		prev = value;
+	}
+
+	function handleChange(change: number) {
+		value = Math.max(min ?? -Infinity, Math.min(+value + change, max ?? Infinity));
+	}
+
+	function handleKeyDown(ev: KeyboardEvent) {
+		if (ev.key === 'Escape' || ev.key === 'Enter') {
+			inputEl?.blur();
+		}
+	}
+
+	$effect(() => {
+		update();
+	});
+
+	let ratio = $derived(((value - min) / (max - min)) * 100);
+</script>
+
+<div>
+	<div class="component-wrapper">
+		<button onclick={() => handleChange(-step)}>-</button>
+		<input
+			bind:value
+			bind:this={inputEl}
+			{id}
+			{step}
+			{max}
+			{min}
+			type="number"
+			onkeydown={handleKeyDown}
+		/>
+		<button onclick={() => handleChange(+step)}>+</button>
+	</div>
+	<div class="slider">
+		<input
+			type="range"
+			bind:value
+			{min}
+			{max}
+			{step}
+			style={`background: linear-gradient(90deg, var(--text-color) ${ratio}%, var(--layer-2, #4b4b4b) ${ratio}%)`}
+		/>
+	</div>
+</div>
+
+<style>
+	.component-wrapper {
+		display: flex;
+		background-color: var(--layer-2, #4b4b4b);
+		user-select: none;
+		transition: box-shadow 0.3s ease;
+		border: solid 1px var(--outline);
+		overflow: hidden;
+		border-radius: 0 var(--border-radius, 2px); /* only top */
+	}
+
+	input[type='number']::-webkit-inner-spin-button,
+	input[type='number']::-webkit-outer-spin-button {
+		-webkit-appearance: none;
+	}
+
+	input[type='number'] {
+		-webkit-appearance: textfield;
+		-moz-appearance: textfield;
+		appearance: textfield;
+		cursor: pointer;
+		font-family: var(--font-family);
+		font-variant-numeric: tabular-nums;
+		color: var(--text-color);
+		background-color: transparent;
+		padding: var(--padding, 6px);
+		font-size: 1em;
+		padding-inline: 10px;
+		text-align: center;
+		border: none;
+		border-style: none;
+		flex: 1;
+		width: 72%;
+	}
+
+	button {
+		background-color: transparent;
+		border: none;
+		cursor: pointer;
+		line-height: 0px;
+		margin: 0;
+		color: var(--text-color);
+		margin-inline: 6px;
+	}
+
+	div input[type='number'] {
+		color: var(--text-color);
+		background-color: transparent;
+		padding: var(--padding, 6px);
+		padding-inline: 0px;
+		text-align: center;
+		border: none;
+		border-style: none;
+	}
+
+	.slider {
+		position: relative;
+		margin-top: -1px; /* hide edge */
+	}
+
+	input[type='range'] {
+		position: absolute;
+		appearance: none;
+		width: 100%;
+		height: 3px;
+		background: var(--layer-2, #4b4b4b);
+		cursor: pointer;
+	}
+
+	/* Thumb: for Chrome, Safari, Edge */
+	input[type='range']::-webkit-slider-thumb {
+		-webkit-appearance: none;
+		appearance: none;
+		width: 0px;
+		height: 0px;
+		box-shadow: none;
+	}
+
+	/* Thumb: for Firefox */
+	input[type='range']::-moz-range-thumb {
+		border: none;
+		width: 0px;
+		height: 0px;
+		box-shadow: none;
+	}
+</style>