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6.3.1/textbox/Example.svelte

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+<script lang="ts">
+	import { onMount } from "svelte";
+
+	export let value: string | null;
+	export let type: "gallery" | "table";
+	export let selected = false;
+
+	let size: number;
+	let el: HTMLDivElement;
+
+	function set_styles(element: HTMLElement, el_width: number): void {
+		element.style.setProperty(
+			"--local-text-width",
+			`${el_width && el_width < 150 ? el_width : 200}px`
+		);
+		element.style.whiteSpace = "unset";
+	}
+
+	function truncate_text(text: string | null, max_length = 60): string {
+		if (!text) return "";
+		const str = String(text);
+		if (str.length <= max_length) return str;
+		return str.slice(0, max_length) + "...";
+	}
+
+	onMount(() => {
+		set_styles(el, size);
+	});
+</script>
+
+<div
+	bind:clientWidth={size}
+	bind:this={el}
+	class:table={type === "table"}
+	class:gallery={type === "gallery"}
+	class:selected
+>
+	{truncate_text(value)}
+</div>
+
+<style>
+	.gallery {
+		padding: var(--size-1) var(--size-2);
+	}
+
+	div {
+		overflow: hidden;
+		white-space: nowrap;
+	}
+</style>

6.3.1/textbox/Index.svelte

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+<svelte:options accessors={true} />
+
+<script context="module" lang="ts">
+	export { default as BaseTextbox } from "./shared/Textbox.svelte";
+	export { default as BaseExample } from "./Example.svelte";
+</script>
+
+<script lang="ts">
+	import { tick } from "svelte";
+	import TextBox from "./shared/Textbox.svelte";
+	import StatusTracker from "@gradio/statustracker";
+	import { Block } from "@gradio/atoms";
+	import { Gradio } from "@gradio/utils";
+	import type { TextboxProps, TextboxEvents } from "./types";
+
+	let _props = $props();
+	const gradio = new Gradio<TextboxEvents, TextboxProps>(_props);
+
+	let label = $derived(gradio.shared.label || "Textbox");
+	// Need to set the value to "" otherwise a change event gets
+	// dispatched when the child sets it to ""
+	gradio.props.value = gradio.props.value ?? "";
+	let old_value = $state(gradio.props.value);
+
+	async function dispatch_change() {
+		if (old_value !== gradio.props.value) {
+			old_value = gradio.props.value;
+			await tick();
+			gradio.dispatch("change", $state.snapshot(gradio.props.value));
+		}
+	}
+
+	async function handle_input(value: string): Promise<void> {
+		if (!gradio.shared || !gradio.props) return;
+		gradio.props.validation_error = null;
+		gradio.props.value = value;
+		await tick();
+		gradio.dispatch("input");
+	}
+
+	$effect(() => {
+		dispatch_change();
+	});
+
+	function handle_change(value: string): void {
+		if (!gradio.shared || !gradio.props) return;
+		gradio.props.validation_error = null;
+		gradio.props.value = value;
+	}
+</script>
+
+<Block
+	visible={gradio.shared.visible}
+	elem_id={gradio.shared.elem_id}
+	elem_classes={gradio.shared.elem_classes}
+	scale={gradio.shared.scale}
+	min_width={gradio.shared.min_width}
+	allow_overflow={false}
+	padding={gradio.shared.container}
+	rtl={gradio.props.rtl}
+>
+	{#if gradio.shared.loading_status}
+		<StatusTracker
+			autoscroll={gradio.shared.autoscroll}
+			i18n={gradio.i18n}
+			{...gradio.shared.loading_status}
+			show_validation_error={false}
+			on_clear_status={() =>
+				gradio.dispatch("clear_status", gradio.shared.loading_status)}
+		/>
+	{/if}
+
+	<TextBox
+		value={gradio.props.value}
+		{label}
+		info={gradio.props.info}
+		show_label={gradio.shared.show_label}
+		lines={gradio.props.lines}
+		type={gradio.props.type}
+		rtl={gradio.props.rtl}
+		text_align={gradio.props.text_align}
+		max_lines={gradio.props.max_lines}
+		placeholder={gradio.props.placeholder}
+		submit_btn={gradio.props.submit_btn}
+		stop_btn={gradio.props.stop_btn}
+		buttons={gradio.props.buttons}
+		autofocus={gradio.props.autofocus}
+		container={gradio.shared.container}
+		autoscroll={gradio.shared.autoscroll}
+		max_length={gradio.props.max_length}
+		html_attributes={gradio.props.html_attributes}
+		validation_error={gradio.shared?.loading_status?.validation_error ||
+			gradio.shared?.validation_error}
+		on:change={(e) => handle_change(e.detail)}
+		on:input={(e) => handle_input(e.detail)}
+		on:submit={() => {
+			gradio.shared.validation_error = null;
+			gradio.dispatch("submit");
+		}}
+		on:blur={() => gradio.dispatch("blur")}
+		on:select={(e) => gradio.dispatch("select", e.detail)}
+		on:focus={() => gradio.dispatch("focus")}
+		on:stop={() => gradio.dispatch("stop")}
+		on:copy={(e) => gradio.dispatch("copy", e.detail)}
+		on_custom_button_click={(id) => {
+			gradio.dispatch("custom_button_click", { id });
+		}}
+		disabled={!gradio.shared.interactive}
+	/>
+</Block>
+
+<!-- bind:value_is_output={gradio.props.value_is_output} -->

6.3.1/textbox/package.json

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+{
+	"name": "@gradio/textbox",
+	"version": "0.13.1",
+	"description": "Gradio UI packages",
+	"type": "module",
+	"author": "",
+	"license": "ISC",
+	"private": false,
+	"main_changeset": true,
+	"main": "Index.svelte",
+	"exports": {
+		".": {
+			"gradio": "./Index.svelte",
+			"svelte": "./dist/Index.svelte",
+			"types": "./dist/Index.svelte.d.ts"
+		},
+		"./example": {
+			"gradio": "./Example.svelte",
+			"svelte": "./dist/Example.svelte",
+			"types": "./dist/Example.svelte.d.ts"
+		},
+		"./package.json": "./package.json"
+	},
+	"dependencies": {
+		"@gradio/atoms": "workspace:^",
+		"@gradio/icons": "workspace:^",
+		"@gradio/statustracker": "workspace:^",
+		"@gradio/utils": "workspace:^"
+	},
+	"devDependencies": {
+		"@gradio/preview": "workspace:^"
+	},
+	"peerDependencies": {
+		"svelte": "^5.43.4"
+	},
+	"repository": {
+		"type": "git",
+		"url": "git+https://github.com/gradio-app/gradio.git",
+		"directory": "js/textbox"
+	}
+}

6.3.1/textbox/shared/Textbox.svelte

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+<script lang="ts">
+	import {
+		beforeUpdate,
+		afterUpdate,
+		createEventDispatcher,
+		tick
+	} from "svelte";
+	import { BlockTitle, IconButton, IconButtonWrapper } from "@gradio/atoms";
+	import { Copy, Check, Send, Square } from "@gradio/icons";
+	import type {
+		SelectData,
+		CopyData,
+		CustomButton as CustomButtonType
+	} from "@gradio/utils";
+	import type { InputHTMLAttributes } from "../types";
+
+	export let value = "";
+	export let value_is_output = false;
+	export let lines = 1;
+	export let placeholder = "";
+	export let label: string;
+	export let info: string | undefined = undefined;
+	export let disabled = false;
+	export let show_label = true;
+	export let container = true;
+	export let max_lines: number | undefined = undefined;
+	export let type: "text" | "password" | "email" = "text";
+	export let buttons: (string | CustomButtonType)[] | null = null;
+	export let on_custom_button_click: ((id: number) => void) | null = null;
+	export let submit_btn: string | boolean | null = null;
+	export let stop_btn: string | boolean | null = null;
+	export let rtl = false;
+	export let autofocus = false;
+	export let text_align: "left" | "right" | undefined = undefined;
+	export let autoscroll = true;
+	export let max_length: number | undefined = undefined;
+	export let html_attributes: InputHTMLAttributes | null = null;
+	export let validation_error: string | null | undefined = undefined;
+
+	let el: HTMLTextAreaElement | HTMLInputElement;
+	let copied = false;
+	let timer: NodeJS.Timeout;
+	let can_scroll: boolean;
+	let previous_scroll_top = 0;
+	let user_has_scrolled_up = false;
+	let _max_lines: number;
+	let ghost_element: HTMLTextAreaElement | null = null;
+
+	const show_textbox_border = !submit_btn;
+
+	$: if (max_lines === undefined || max_lines === null) {
+		if (type === "text") {
+			_max_lines = Math.max(lines, 20);
+		} else {
+			_max_lines = 1;
+		}
+	} else {
+		_max_lines = Math.max(max_lines, lines);
+	}
+
+	$: (value,
+		validation_error,
+		el && lines !== _max_lines && lines > 1 && resize({ target: el }));
+
+	$: if (value === null) value = "";
+
+	const dispatch = createEventDispatcher<{
+		change: string;
+		submit: undefined;
+		stop: undefined;
+		blur: undefined;
+		select: SelectData;
+		input: string;
+		focus: undefined;
+		copy: CopyData;
+		custom_button_click: { component_id: number };
+	}>();
+
+	beforeUpdate(() => {
+		if (
+			!user_has_scrolled_up &&
+			el &&
+			el.offsetHeight + el.scrollTop > el.scrollHeight - 100
+		) {
+			can_scroll = true;
+		}
+	});
+
+	const scroll = (): void => {
+		if (can_scroll && autoscroll && !user_has_scrolled_up) {
+			el.scrollTo(0, el.scrollHeight);
+		}
+	};
+
+	async function handle_change(): Promise<void> {
+		await tick();
+		dispatch("change", value);
+	}
+
+	afterUpdate(() => {
+		if (autofocus) {
+			el.focus();
+		}
+		if (can_scroll && autoscroll) {
+			scroll();
+		}
+		value_is_output = false;
+	});
+	$: (value, handle_change());
+
+	async function handle_copy(): Promise<void> {
+		if ("clipboard" in navigator) {
+			await navigator.clipboard.writeText(value);
+			dispatch("copy", { value: value });
+			copy_feedback();
+		}
+	}
+
+	function copy_feedback(): void {
+		copied = true;
+		if (timer) clearTimeout(timer);
+		timer = setTimeout(() => {
+			copied = false;
+		}, 1000);
+	}
+
+	function handle_select(event: Event): void {
+		const target: HTMLTextAreaElement | HTMLInputElement = event.target as
+			| HTMLTextAreaElement
+			| HTMLInputElement;
+		const text = target.value;
+		const index: [number, number] = [
+			target.selectionStart as number,
+			target.selectionEnd as number
+		];
+		dispatch("select", { value: text.substring(...index), index: index });
+	}
+
+	async function handle_keypress(e: KeyboardEvent): Promise<void> {
+		if (e.key === "Enter" && e.shiftKey && lines > 1) {
+			e.preventDefault();
+			await tick();
+			dispatch("submit");
+		} else if (
+			e.key === "Enter" &&
+			!e.shiftKey &&
+			lines === 1 &&
+			_max_lines >= 1
+		) {
+			e.preventDefault();
+			await tick();
+			dispatch("submit");
+		}
+		await tick();
+		dispatch("input", value);
+	}
+
+	function handle_scroll(event: Event): void {
+		const target = event.target as HTMLElement;
+		const current_scroll_top = target.scrollTop;
+		if (current_scroll_top < previous_scroll_top) {
+			user_has_scrolled_up = true;
+		}
+		previous_scroll_top = current_scroll_top;
+
+		const max_scroll_top = target.scrollHeight - target.clientHeight;
+		const user_has_scrolled_to_bottom = current_scroll_top >= max_scroll_top;
+		if (user_has_scrolled_to_bottom) {
+			user_has_scrolled_up = false;
+		}
+	}
+
+	function handle_stop(): void {
+		dispatch("stop");
+	}
+
+	function handle_submit(): void {
+		dispatch("submit");
+	}
+
+	async function resize(
+		event: Event | { target: HTMLTextAreaElement | HTMLInputElement }
+	): Promise<void> {
+		await tick();
+		if (lines === _max_lines) return;
+
+		const target = event.target as HTMLTextAreaElement;
+		const computed_styles = window.getComputedStyle(target);
+		const padding_top = parseFloat(computed_styles.paddingTop);
+		const padding_bottom = parseFloat(computed_styles.paddingBottom);
+		const line_height = parseFloat(computed_styles.lineHeight);
+
+		let max =
+			_max_lines === undefined
+				? false
+				: padding_top + padding_bottom + line_height * _max_lines;
+		let min = padding_top + padding_bottom + lines * line_height;
+
+		target.style.height = "1px";
+
+		let scroll_height;
+		if (max && target.scrollHeight > max) {
+			scroll_height = max;
+		} else if (target.scrollHeight < min) {
+			scroll_height = min;
+		} else {
+			scroll_height = target.scrollHeight;
+		}
+
+		target.style.height = `${scroll_height}px`;
+
+		update_scrollbar_visibility(target);
+	}
+
+	function update_scrollbar_visibility(textarea: HTMLTextAreaElement): void {
+		// Using "auto" scroll does not work, as the scrollbar is visible even
+		// when the content is about the same height as the textarea height. So
+		// here, we add the scrollbar if the content is longer than a threshold
+		// of 1 line height beyond the textarea height.
+		const content_height = textarea.scrollHeight;
+		const visible_height = textarea.clientHeight;
+		const line_height = parseFloat(
+			window.getComputedStyle(textarea).lineHeight
+		);
+		if (content_height > visible_height + line_height) {
+			textarea.style.overflowY = "scroll";
+		} else {
+			textarea.style.overflowY = "hidden";
+		}
+	}
+
+	function text_area_resize(
+		_el: HTMLTextAreaElement,
+		_value: string
+	): any | undefined {
+		if (lines === _max_lines || (lines === 1 && _max_lines === 1)) return;
+
+		_el.style.overflowY = "scroll";
+		_el.addEventListener("input", resize);
+
+		if (!_value.trim()) return;
+		resize({ target: _el });
+
+		return {
+			destroy: () => _el.removeEventListener("input", resize)
+		};
+	}
+</script>
+
+<!-- svelte-ignore a11y-autofocus -->
+<label class:container class:show_textbox_border>
+	{#if show_label && buttons && buttons.length > 0}
+		<IconButtonWrapper {buttons} {on_custom_button_click}>
+			{#if buttons.some((btn) => typeof btn === "string" && btn === "copy")}
+				<IconButton
+					Icon={copied ? Check : Copy}
+					on:click={handle_copy}
+					label={copied ? "Copied" : "Copy"}
+				/>
+			{/if}
+		</IconButtonWrapper>
+	{/if}
+	<BlockTitle show_label={validation_error ? true : show_label} {info}
+		>{label}
+		{#if validation_error}
+			<div class="validation-error">{validation_error}</div>
+		{/if}
+	</BlockTitle>
+
+	<div class="input-container">
+		{#if lines === 1 && _max_lines === 1}
+			{#if type === "text"}
+				<input
+					data-testid="textbox"
+					type="text"
+					class="scroll-hide"
+					dir={rtl ? "rtl" : "ltr"}
+					bind:value
+					bind:this={el}
+					{placeholder}
+					{disabled}
+					{autofocus}
+					maxlength={max_length}
+					on:keypress={handle_keypress}
+					on:blur
+					on:select={handle_select}
+					on:focus
+					class:validation-error={validation_error}
+					style={text_align ? "text-align: " + text_align : ""}
+					autocapitalize={html_attributes?.autocapitalize}
+					autocorrect={html_attributes?.autocorrect}
+					spellcheck={html_attributes?.spellcheck}
+					autocomplete={html_attributes?.autocomplete}
+					tabindex={html_attributes?.tabindex}
+					enterkeyhint={html_attributes?.enterkeyhint}
+					lang={html_attributes?.lang}
+				/>
+			{:else if type === "password"}
+				<input
+					data-testid="password"
+					type="password"
+					class="scroll-hide"
+					bind:value
+					bind:this={el}
+					{placeholder}
+					{disabled}
+					{autofocus}
+					maxlength={max_length}
+					on:keypress={handle_keypress}
+					on:blur
+					on:select={handle_select}
+					on:focus
+					class:validation-error={validation_error}
+					autocomplete=""
+					autocapitalize={html_attributes?.autocapitalize}
+					autocorrect={html_attributes?.autocorrect}
+					spellcheck={html_attributes?.spellcheck}
+					tabindex={html_attributes?.tabindex}
+					enterkeyhint={html_attributes?.enterkeyhint}
+					lang={html_attributes?.lang}
+				/>
+			{:else if type === "email"}
+				<input
+					data-testid="textbox"
+					type="email"
+					class="scroll-hide"
+					bind:value
+					bind:this={el}
+					{placeholder}
+					{disabled}
+					{autofocus}
+					maxlength={max_length}
+					on:keypress={handle_keypress}
+					on:blur
+					on:select={handle_select}
+					on:focus
+					class:validation-error={validation_error}
+					autocomplete="email"
+					autocapitalize={html_attributes?.autocapitalize}
+					autocorrect={html_attributes?.autocorrect}
+					spellcheck={html_attributes?.spellcheck}
+					tabindex={html_attributes?.tabindex}
+					enterkeyhint={html_attributes?.enterkeyhint}
+					lang={html_attributes?.lang}
+				/>
+			{/if}
+		{:else}
+			<textarea
+				data-testid="textbox"
+				use:text_area_resize={value}
+				dir={rtl ? "rtl" : "ltr"}
+				class:no-label={!show_label && (submit_btn || stop_btn)}
+				bind:value
+				bind:this={el}
+				{placeholder}
+				rows={lines}
+				{disabled}
+				{autofocus}
+				maxlength={max_length}
+				on:keypress={handle_keypress}
+				on:blur
+				on:select={handle_select}
+				on:focus
+				on:scroll={handle_scroll}
+				class:validation-error={validation_error}
+				style={text_align ? "text-align: " + text_align : ""}
+				autocapitalize={html_attributes?.autocapitalize}
+				autocorrect={html_attributes?.autocorrect}
+				spellcheck={html_attributes?.spellcheck}
+				autocomplete={html_attributes?.autocomplete}
+				tabindex={html_attributes?.tabindex}
+				enterkeyhint={html_attributes?.enterkeyhint}
+				lang={html_attributes?.lang}
+			/>
+		{/if}
+		{#if submit_btn}
+			<button
+				class="submit-button"
+				class:padded-button={submit_btn !== true}
+				on:click={handle_submit}
+			>
+				{#if submit_btn === true}
+					<Send />
+				{:else}
+					{submit_btn}
+				{/if}
+			</button>
+		{/if}
+		{#if stop_btn}
+			<button
+				class="stop-button"
+				class:padded-button={stop_btn !== true}
+				on:click={handle_stop}
+			>
+				{#if stop_btn === true}
+					<Square fill="none" stroke_width={2.5} />
+				{:else}
+					{stop_btn}
+				{/if}
+			</button>
+		{/if}
+	</div>
+</label>
+
+<style>
+	label {
+		display: block;
+		width: 100%;
+	}
+
+	input[type="text"],
+	input[type="password"],
+	input[type="email"],
+	textarea {
+		flex-grow: 1;
+		outline: none !important;
+		margin-top: 0px;
+		margin-bottom: 0px;
+		resize: none;
+		z-index: 1;
+		display: block;
+		position: relative;
+		outline: none !important;
+		background: var(--input-background-fill);
+		padding: var(--input-padding);
+		width: 100%;
+		color: var(--body-text-color);
+		font-weight: var(--input-text-weight);
+		font-size: var(--input-text-size);
+		line-height: var(--line-sm);
+		border: none;
+	}
+
+	textarea.no-label {
+		padding-top: 5px;
+		padding-bottom: 5px;
+	}
+	label.show_textbox_border input,
+	label.show_textbox_border textarea {
+		box-shadow: var(--input-shadow);
+	}
+	label:not(.container),
+	label:not(.container) input,
+	label:not(.container) textarea {
+		height: 100%;
+	}
+	label.container.show_textbox_border input,
+	label.container.show_textbox_border textarea {
+		border: var(--input-border-width) solid var(--input-border-color);
+		border-radius: var(--input-radius);
+	}
+	input:disabled,
+	textarea:disabled {
+		-webkit-opacity: 1;
+		opacity: 1;
+	}
+
+	label.container.show_textbox_border input:focus,
+	label.container.show_textbox_border textarea:focus {
+		box-shadow: var(--input-shadow-focus);
+		border-color: var(--input-border-color-focus);
+		background: var(--input-background-fill-focus);
+	}
+
+	input::placeholder,
+	textarea::placeholder {
+		color: var(--input-placeholder-color);
+	}
+
+	/* Same submit button style as MultimodalTextbox for the consistent UI */
+	.input-container {
+		display: flex;
+		position: relative;
+		align-items: flex-end;
+	}
+	.submit-button,
+	.stop-button {
+		border: none;
+		text-align: center;
+		text-decoration: none;
+		font-size: 14px;
+		cursor: pointer;
+		border-radius: 15px;
+		min-width: 30px;
+		height: 30px;
+		flex-shrink: 0;
+		display: flex;
+		justify-content: center;
+		align-items: center;
+		z-index: var(--layer-1);
+	}
+	.stop-button,
+	.submit-button {
+		background: var(--button-secondary-background-fill);
+		color: var(--button-secondary-text-color);
+	}
+	.stop-button:hover,
+	.submit-button:hover {
+		background: var(--button-secondary-background-fill-hover);
+	}
+	.stop-button:disabled,
+	.submit-button:disabled {
+		background: var(--button-secondary-background-fill);
+		cursor: pointer;
+	}
+	.stop-button:active,
+	.submit-button:active {
+		box-shadow: var(--button-shadow-active);
+	}
+	.submit-button :global(svg) {
+		height: 22px;
+		width: 22px;
+	}
+
+	.stop-button :global(svg) {
+		height: 16px;
+		width: 16px;
+	}
+	.padded-button {
+		padding: 0 10px;
+	}
+
+	div.validation-error {
+		color: var(--error-icon-color);
+		font-size: var(--font-sans);
+		margin-top: var(--spacing-sm);
+		font-weight: var(--weight-semibold);
+	}
+
+	label.container input.validation-error,
+	label.container textarea.validation-error {
+		border-color: transparent !important;
+		box-shadow:
+			0 0 3px 1px var(--error-icon-color),
+			var(--shadow-inset) !important;
+	}
+</style>

6.3.1/textbox/types.ts

@@ -0,0 +1,74 @@
+import {
+	type SelectData,
+	type CopyData,
+	type CustomButton
+} from "@gradio/utils";
+import type { LoadingStatus } from "@gradio/statustracker";
+
+export interface TextboxEvents {
+	change: string;
+	submit: never;
+	blur: never;
+	select: SelectData;
+	input: never;
+	focus: never;
+	stop: never;
+	clear_status: LoadingStatus;
+	copy: CopyData;
+	custom_button_click: { id: number };
+}
+
+export interface TextboxProps {
+	value: string;
+	info: string;
+	lines: number;
+	type: "text" | "password" | "email" | undefined;
+	rtl: boolean;
+	text_align: "right" | "left";
+	max_lines: number;
+	placeholder: string;
+	submit_btn: string;
+	stop_btn: string;
+	buttons: (string | CustomButton)[] | null;
+	autofocus: boolean;
+	autoscroll: boolean;
+	max_length: number;
+	html_attributes: InputHTMLAttributes;
+	validation_error: string | null;
+}
+
+type FullAutoFill =
+	| AutoFill
+	| "bday"
+	| `${OptionalPrefixToken<AutoFillAddressKind>}${"cc-additional-name"}`
+	| "nickname"
+	| "language"
+	| "organization-title"
+	| "photo"
+	| "sex"
+	| "url";
+
+export interface InputHTMLAttributes {
+	autocapitalize?:
+		| "off"
+		| "none"
+		| "on"
+		| "sentences"
+		| "words"
+		| "characters"
+		| null;
+	autocorrect?: "on" | "off" | null;
+	spellcheck?: boolean | null;
+	autocomplete?: FullAutoFill | undefined | null;
+	tabindex?: number | null;
+	enterkeyhint?:
+		| "enter"
+		| "done"
+		| "go"
+		| "next"
+		| "previous"
+		| "search"
+		| "send"
+		| null;
+	lang?: string | null;
+}