feat: custom model selector

src/lib/components/chat/ModelSelector.svelte

@@ -3,6 +3,7 @@
 	import { models, showSettings, settings, user } from '$lib/stores';
 	import { onMount, tick, getContext } from 'svelte';
 	import { toast } from 'svelte-sonner';
+	import Select from '../common/Select.svelte';
 
 	const i18n = getContext('i18n');
 
@@ -32,30 +33,24 @@
 	}
 </script>
 
-<div class="flex flex-col my-2">
+<div class="flex flex-col my-2 w-full">
 	{#each selectedModels as selectedModel, selectedModelIdx}
-		<div class="flex">
-			<select
-				id="models"
-				class="outline-none bg-transparent text-lg font-semibold rounded-lg block w-full placeholder-gray-400"
-				bind:value={selectedModel}
-				{disabled}
-			>
-				<option class=" text-gray-700" value="" selected disabled
-					>{$i18n.t('Select a model')}</option
-				>
-
-				{#each $models as model}
-					{#if model.name === 'hr'}
-						<hr />
-					{:else}
-						<option value={model.id} class="text-gray-700 text-lg"
-							>{model.name +
-								`${model.size ? ` (${(model.size / 1024 ** 3).toFixed(1)}GB)` : ''}`}</option
-						>
-					{/if}
-				{/each}
-			</select>
+		<div class="flex w-full">
+			<div class="overflow-hidden w-full">
+				<div class="mr-2 max-w-full">
+					<Select
+						placeholder={$i18n.t('Select a model')}
+						items={$models
+							.filter((model) => model.name !== 'hr')
+							.map((model) => ({
+								value: model.id,
+								label:
+									model.name + `${model.size ? ` (${(model.size / 1024 ** 3).toFixed(1)}GB)` : ''}`
+							}))}
+						bind:value={selectedModel}
+					/>
+				</div>
+			</div>
 
 			{#if selectedModelIdx === 0}
 				<button
@@ -136,6 +131,6 @@
 	{/each}
 </div>
 
-<div class="text-left mt-1.5 text-xs text-gray-500">
+<div class="text-left mt-1.5 ml-1 text-xs text-gray-500">
 	<button on:click={saveDefaultModel}> {$i18n.t('Set as default')}</button>
 </div>

src/lib/components/common/Select.svelte

@@ -0,0 +1,84 @@
+<script lang="ts">
+	import { Select } from 'bits-ui';
+
+	import { flyAndScale } from '$lib/utils/transitions';
+
+	import { createEventDispatcher } from 'svelte';
+	import ChevronDown from '../icons/ChevronDown.svelte';
+	import Check from '../icons/Check.svelte';
+	import Search from '../icons/Search.svelte';
+
+	const dispatch = createEventDispatcher();
+
+	export let value = '';
+	export let placeholder = 'Select a model';
+	export let items = [
+		{ value: 'mango', label: 'Mango' },
+		{ value: 'watermelon', label: 'Watermelon' },
+		{ value: 'apple', label: 'Apple' },
+		{ value: 'pineapple', label: 'Pineapple' },
+		{ value: 'orange', label: 'Orange' }
+	];
+
+	let searchValue = '';
+
+	$: filteredItems = searchValue
+		? items.filter((item) => item.value.includes(searchValue.toLowerCase()))
+		: items;
+</script>
+
+<Select.Root
+	{items}
+	onOpenChange={() => {
+		searchValue = '';
+	}}
+	selected={items.find((item) => item.value === value)}
+	onSelectedChange={(selectedItem) => {
+		value = selectedItem.value;
+	}}
+>
+	<Select.Trigger class="relative w-full" aria-label={placeholder}>
+		<Select.Value
+			class="inline-flex h-input px-0.5 w-full outline-none bg-transparent truncate text-lg font-semibold placeholder-gray-400  focus:outline-none"
+			{placeholder}
+		/>
+		<ChevronDown className="absolute end-2 top-1/2 -translate-y-[45%] size-3.5" strokeWidth="2.5" />
+	</Select.Trigger>
+	<Select.Content
+		class="w-full rounded-lg  bg-white dark:bg-gray-900 dark:text-white shadow-lg border border-gray-300/30 dark:border-gray-700/50  outline-none"
+		transition={flyAndScale}
+		sideOffset={4}
+	>
+		<div class="flex items-center gap-2.5 px-5 mt-3.5 mb-3">
+			<Search className="size-4" strokeWidth="2.5" />
+
+			<input
+				bind:value={searchValue}
+				class="w-full text-sm bg-transparent outline-none"
+				placeholder="Search a model"
+			/>
+		</div>
+
+		<hr class="border-gray-100 dark:border-gray-800" />
+
+		<div class="px-3 my-2 max-h-80 overflow-y-auto">
+			{#each filteredItems as item}
+				<Select.Item
+					class="flex w-full font-medium line-clamp-1 select-none items-center rounded-button py-2 pl-3 pr-1.5 text-sm  text-gray-700 dark:text-gray-100  outline-none transition-all duration-75 data-[highlighted]:bg-muted"
+					value={item.value}
+					label={item.label}
+				>
+					{item.label}
+					<Select.ItemIndicator class="ml-auto" asChild={false}>
+						<Check />
+					</Select.ItemIndicator>
+				</Select.Item>
+			{:else}
+				<span class="block px-5 py-2 text-sm text-gray-700 dark:text-gray-100">
+					No results found
+				</span>
+			{/each}
+		</div>
+	</Select.Content>
+	<Select.Input name="favoriteFruit" />
+</Select.Root>

src/lib/components/icons/Check.svelte

@@ -0,0 +1,15 @@
+<script lang="ts">
+	export let className = 'w-4 h-4';
+	export let strokeWidth = '1.5';
+</script>
+
+<svg
+	xmlns="http://www.w3.org/2000/svg"
+	fill="none"
+	viewBox="0 0 24 24"
+	stroke-width={strokeWidth}
+	stroke="currentColor"
+	class={className}
+>
+	<path stroke-linecap="round" stroke-linejoin="round" d="m4.5 12.75 6 6 9-13.5" />
+</svg>

src/lib/components/icons/ChevronDown.svelte

@@ -0,0 +1,15 @@
+<script lang="ts">
+	export let className = 'w-4 h-4';
+	export let strokeWidth = '1.5';
+</script>
+
+<svg
+	xmlns="http://www.w3.org/2000/svg"
+	fill="none"
+	viewBox="0 0 24 24"
+	stroke-width={strokeWidth}
+	stroke="currentColor"
+	class={className}
+>
+	<path stroke-linecap="round" stroke-linejoin="round" d="m19.5 8.25-7.5 7.5-7.5-7.5" />
+</svg>

src/lib/components/icons/Search.svelte

@@ -0,0 +1,19 @@
+<script lang="ts">
+	export let className = 'w-4 h-4';
+	export let strokeWidth = '1.5';
+</script>
+
+<svg
+	xmlns="http://www.w3.org/2000/svg"
+	fill="none"
+	viewBox="0 0 24 24"
+	stroke-width={strokeWidth}
+	stroke="currentColor"
+	class={className}
+>
+	<path
+		stroke-linecap="round"
+		stroke-linejoin="round"
+		d="m21 21-5.197-5.197m0 0A7.5 7.5 0 1 0 5.196 5.196a7.5 7.5 0 0 0 10.607 10.607Z"
+	/>
+</svg>

src/lib/utils/transitions/index.ts

@@ -0,0 +1,48 @@
+import { cubicOut } from 'svelte/easing';
+import type { TransitionConfig } from 'svelte/transition';
+
+type FlyAndScaleParams = {
+	y?: number;
+	start?: number;
+	duration?: number;
+};
+
+const defaultFlyAndScaleParams = { y: -8, start: 0.95, duration: 200 };
+
+export const flyAndScale = (node: Element, params?: FlyAndScaleParams): TransitionConfig => {
+	const style = getComputedStyle(node);
+	const transform = style.transform === 'none' ? '' : style.transform;
+	const withDefaults = { ...defaultFlyAndScaleParams, ...params };
+
+	const scaleConversion = (valueA: number, scaleA: [number, number], scaleB: [number, number]) => {
+		const [minA, maxA] = scaleA;
+		const [minB, maxB] = scaleB;
+
+		const percentage = (valueA - minA) / (maxA - minA);
+		const valueB = percentage * (maxB - minB) + minB;
+
+		return valueB;
+	};
+
+	const styleToString = (style: Record<string, number | string | undefined>): string => {
+		return Object.keys(style).reduce((str, key) => {
+			if (style[key] === undefined) return str;
+			return str + `${key}:${style[key]};`;
+		}, '');
+	};
+
+	return {
+		duration: withDefaults.duration ?? 200,
+		delay: 0,
+		css: (t) => {
+			const y = scaleConversion(t, [0, 1], [withDefaults.y, 0]);
+			const scale = scaleConversion(t, [0, 1], [withDefaults.start, 1]);
+
+			return styleToString({
+				transform: `${transform} translate3d(0, ${y}px, 0) scale(${scale})`,
+				opacity: t
+			});
+		},
+		easing: cubicOut
+	};
+};