gradio / js /dataframe /shared /Table.svelte
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<script lang="ts">
import { createEventDispatcher, tick, onMount } from "svelte";
import { dsvFormat } from "d3-dsv";
import { dequal } from "dequal/lite";
import { copy } from "@gradio/utils";
import { Upload } from "@gradio/upload";
import { BaseButton } from "@gradio/button";
import EditableCell from "./EditableCell.svelte";
import type { SelectData } from "@gradio/utils";
import type { I18nFormatter } from "js/app/src/gradio_helper";
import VirtualTable from "./VirtualTable.svelte";
import type {
Headers,
HeadersWithIDs,
Data,
Metadata,
Datatype
} from "./utils";
export let datatype: Datatype | Datatype[];
export let label: string | null = null;
export let headers: Headers = [];
let values: (string | number)[][];
export let value: { data: Data; headers: Headers; metadata: Metadata } | null;
export let col_count: [number, "fixed" | "dynamic"];
export let row_count: [number, "fixed" | "dynamic"];
export let latex_delimiters: {
left: string;
right: string;
display: boolean;
}[];
export let editable = true;
export let wrap = false;
export let root: string;
export let i18n: I18nFormatter;
export let height = 500;
export let line_breaks = true;
export let column_widths: string[] = [];
let selected: false | [number, number] = false;
let display_value: string[][] | null = value?.metadata?.display_value ?? null;
let styling: string[][] | null = value?.metadata?.styling ?? null;
$: {
if (value) {
headers = value.headers;
values = value.data;
display_value = value?.metadata?.display_value ?? null;
styling = value?.metadata?.styling ?? null;
} else if (values === null) {
values = [];
}
}
const dispatch = createEventDispatcher<{
change: {
data: (string | number)[][];
headers: string[];
metadata: Metadata;
};
select: SelectData;
}>();
let editing: false | [number, number] = false;
const get_data_at = (row: number, col: number): string | number =>
data?.[row]?.[col]?.value;
$: {
if (selected !== false) {
const [row, col] = selected;
if (!isNaN(row) && !isNaN(col)) {
dispatch("select", { index: [row, col], value: get_data_at(row, col) });
}
}
}
let els: Record<
string,
{ cell: null | HTMLTableCellElement; input: null | HTMLInputElement }
> = {};
let data_binding: Record<string, (typeof data)[0][0]> = {};
function make_id(): string {
return Math.random().toString(36).substring(2, 15);
}
function make_headers(_head: Headers): HeadersWithIDs {
let _h = _head || [];
if (col_count[1] === "fixed" && _h.length < col_count[0]) {
const fill = Array(col_count[0] - _h.length)
.fill("")
.map((_, i) => `${i + _h.length}`);
_h = _h.concat(fill);
}
if (!_h || _h.length === 0) {
return Array(col_count[0])
.fill(0)
.map((_, i) => {
const _id = make_id();
els[_id] = { cell: null, input: null };
return { id: _id, value: JSON.stringify(i + 1) };
});
}
return _h.map((h, i) => {
const _id = make_id();
els[_id] = { cell: null, input: null };
return { id: _id, value: h ?? "" };
});
}
function process_data(_values: (string | number)[][]): {
value: string | number;
id: string;
}[][] {
const data_row_length = _values.length;
return Array(
row_count[1] === "fixed"
? row_count[0]
: data_row_length < row_count[0]
? row_count[0]
: data_row_length
)
.fill(0)
.map((_, i) =>
Array(
col_count[1] === "fixed"
? col_count[0]
: data_row_length > 0
? _values[0].length
: headers.length
)
.fill(0)
.map((_, j) => {
const id = make_id();
els[id] = els[id] || { input: null, cell: null };
const obj = { value: _values?.[i]?.[j] ?? "", id };
data_binding[id] = obj;
return obj;
})
);
}
let _headers = make_headers(headers);
let old_headers: string[] | undefined;
$: {
if (!dequal(headers, old_headers)) {
trigger_headers();
}
}
function trigger_headers(): void {
_headers = make_headers(headers);
old_headers = headers.slice();
}
$: if (!dequal(values, old_val)) {
data = process_data(values as (string | number)[][]);
old_val = values as (string | number)[][];
}
let data: { id: string; value: string | number }[][] = [[]];
let old_val: undefined | (string | number)[][] = undefined;
$: _headers &&
dispatch("change", {
data: data.map((r) => r.map(({ value }) => value)),
headers: _headers.map((h) => h.value),
metadata: editable
? null
: { display_value: display_value, styling: styling }
});
function get_sort_status(
name: string,
_sort?: number,
direction?: SortDirection
): "none" | "ascending" | "descending" {
if (!_sort) return "none";
if (headers[_sort] === name) {
if (direction === "asc") return "ascending";
if (direction === "des") return "descending";
}
return "none";
}
function get_current_indices(id: string): [number, number] {
return data.reduce(
(acc, arr, i) => {
const j = arr.reduce(
(_acc, _data, k) => (id === _data.id ? k : _acc),
-1
);
return j === -1 ? acc : [i, j];
},
[-1, -1]
);
}
async function start_edit(i: number, j: number): Promise<void> {
if (!editable || dequal(editing, [i, j])) return;
editing = [i, j];
}
function move_cursor(
key: "ArrowRight" | "ArrowLeft" | "ArrowDown" | "ArrowUp",
current_coords: [number, number]
): void {
const dir = {
ArrowRight: [0, 1],
ArrowLeft: [0, -1],
ArrowDown: [1, 0],
ArrowUp: [-1, 0]
}[key];
const i = current_coords[0] + dir[0];
const j = current_coords[1] + dir[1];
if (i < 0 && j <= 0) {
selected_header = j;
selected = false;
} else {
const is_data = data[i]?.[j];
selected = is_data ? [i, j] : selected;
}
}
let clear_on_focus = false;
// eslint-disable-next-line complexity
async function handle_keydown(event: KeyboardEvent): Promise<void> {
if (selected_header !== false && header_edit === false) {
switch (event.key) {
case "ArrowDown":
selected = [0, selected_header];
selected_header = false;
return;
case "ArrowLeft":
selected_header =
selected_header > 0 ? selected_header - 1 : selected_header;
return;
case "ArrowRight":
selected_header =
selected_header < _headers.length - 1
? selected_header + 1
: selected_header;
return;
case "Escape":
event.preventDefault();
selected_header = false;
break;
case "Enter":
event.preventDefault();
break;
}
}
if (!selected) {
return;
}
const [i, j] = selected;
switch (event.key) {
case "ArrowRight":
case "ArrowLeft":
case "ArrowDown":
case "ArrowUp":
if (editing) break;
event.preventDefault();
move_cursor(event.key, [i, j]);
break;
case "Escape":
if (!editable) break;
event.preventDefault();
editing = false;
break;
case "Enter":
if (!editable) break;
event.preventDefault();
if (event.shiftKey) {
add_row(i);
await tick();
selected = [i + 1, j];
} else {
if (dequal(editing, [i, j])) {
editing = false;
await tick();
selected = [i, j];
} else {
editing = [i, j];
}
}
break;
case "Backspace":
if (!editable) break;
if (!editing) {
event.preventDefault();
data[i][j].value = "";
}
break;
case "Delete":
if (!editable) break;
if (!editing) {
event.preventDefault();
data[i][j].value = "";
}
break;
case "Tab":
let direction = event.shiftKey ? -1 : 1;
let is_data_x = data[i][j + direction];
let is_data_y =
data?.[i + direction]?.[direction > 0 ? 0 : _headers.length - 1];
if (is_data_x || is_data_y) {
event.preventDefault();
selected = is_data_x
? [i, j + direction]
: [i + direction, direction > 0 ? 0 : _headers.length - 1];
}
editing = false;
break;
default:
if (!editable) break;
if (
(!editing || (editing && dequal(editing, [i, j]))) &&
event.key.length === 1
) {
clear_on_focus = true;
editing = [i, j];
}
}
}
async function handle_cell_click(i: number, j: number): Promise<void> {
if (dequal(editing, [i, j])) return;
header_edit = false;
selected_header = false;
editing = false;
selected = [i, j];
await tick();
parent.focus();
}
type SortDirection = "asc" | "des";
let sort_direction: SortDirection | undefined;
let sort_by: number | undefined;
function handle_sort(col: number): void {
if (typeof sort_by !== "number" || sort_by !== col) {
sort_direction = "asc";
sort_by = col;
} else {
if (sort_direction === "asc") {
sort_direction = "des";
} else if (sort_direction === "des") {
sort_direction = "asc";
}
}
}
let header_edit: number | false;
let select_on_focus = false;
let selected_header: number | false = false;
async function edit_header(i: number, _select = false): Promise<void> {
if (!editable || col_count[1] !== "dynamic" || header_edit === i) return;
selected = false;
selected_header = i;
header_edit = i;
select_on_focus = _select;
}
function end_header_edit(event: KeyboardEvent): void {
if (!editable) return;
switch (event.key) {
case "Escape":
case "Enter":
case "Tab":
event.preventDefault();
selected = false;
selected_header = header_edit;
header_edit = false;
parent.focus();
break;
}
}
async function add_row(index?: number): Promise<void> {
parent.focus();
if (row_count[1] !== "dynamic") return;
if (data.length === 0) {
values = [Array(headers.length).fill("")];
return;
}
data.splice(
index ? index + 1 : data.length,
0,
Array(data[0].length)
.fill(0)
.map((_, i) => {
const _id = make_id();
els[_id] = { cell: null, input: null };
return { id: _id, value: "" };
})
);
data = data;
selected = [index ? index + 1 : data.length - 1, 0];
}
async function add_col(): Promise<void> {
parent.focus();
if (col_count[1] !== "dynamic") return;
for (let i = 0; i < data.length; i++) {
const _id = make_id();
els[_id] = { cell: null, input: null };
data[i].push({ id: _id, value: "" });
}
headers.push(`Header ${headers.length + 1}`);
data = data;
headers = headers;
await tick();
requestAnimationFrame(() => {
edit_header(headers.length - 1, true);
const new_w = parent.querySelectorAll("tbody")[1].offsetWidth;
parent.querySelectorAll("table")[1].scrollTo({ left: new_w });
});
}
function handle_click_outside(event: Event): void {
event.stopImmediatePropagation();
const [trigger] = event.composedPath() as HTMLElement[];
if (parent.contains(trigger)) {
return;
}
editing = false;
header_edit = false;
selected_header = false;
selected = false;
}
function guess_delimitaor(
text: string,
possibleDelimiters: string[]
): string[] {
return possibleDelimiters.filter(weedOut);
function weedOut(delimiter: string): boolean {
var cache = -1;
return text.split("\n").every(checkLength);
function checkLength(line: string): boolean {
if (!line) {
return true;
}
var length = line.split(delimiter).length;
if (cache < 0) {
cache = length;
}
return cache === length && length > 1;
}
}
}
function data_uri_to_blob(data_uri: string): Blob {
const byte_str = atob(data_uri.split(",")[1]);
const mime_str = data_uri.split(",")[0].split(":")[1].split(";")[0];
const ab = new ArrayBuffer(byte_str.length);
const ia = new Uint8Array(ab);
for (let i = 0; i < byte_str.length; i++) {
ia[i] = byte_str.charCodeAt(i);
}
return new Blob([ab], { type: mime_str });
}
function blob_to_string(blob: Blob): void {
const reader = new FileReader();
function handle_read(e: ProgressEvent<FileReader>): void {
if (!e?.target?.result || typeof e.target.result !== "string") return;
const [delimiter] = guess_delimitaor(e.target.result, [",", "\t"]);
const [head, ...rest] = dsvFormat(delimiter).parseRows(e.target.result);
_headers = make_headers(
col_count[1] === "fixed" ? head.slice(0, col_count[0]) : head
);
values = rest;
reader.removeEventListener("loadend", handle_read);
}
reader.addEventListener("loadend", handle_read);
reader.readAsText(blob);
}
let dragging = false;
let t_width = 0;
function get_max(
_d: { value: any; id: string }[][]
): { value: any; id: string }[] {
let max = _d[0].slice();
for (let i = 0; i < _d.length; i++) {
for (let j = 0; j < _d[i].length; j++) {
if (`${max[j].value}`.length < `${_d[i][j].value}`.length) {
max[j] = _d[i][j];
}
}
}
return max;
}
$: max = get_max(data);
$: cells[0] && set_cell_widths();
let cells: HTMLTableCellElement[] = [];
let parent: HTMLDivElement;
let table: HTMLTableElement;
function set_cell_widths(): void {
const widths = cells.map((el, i) => {
return el?.clientWidth || 0;
});
if (widths.length === 0) return;
for (let i = 0; i < widths.length; i++) {
parent.style.setProperty(
`--cell-width-${i}`,
`${widths[i] - scrollbar_width / widths.length}px`
);
}
}
let table_height: number = height;
let scrollbar_width = 0;
function sort_data(
_data: typeof data,
_display_value: string[][] | null,
_styling: string[][] | null,
col?: number,
dir?: SortDirection
): void {
let id = null;
//Checks if the selected cell is still in the data
if (selected && selected[0] in data && selected[1] in data[selected[0]]) {
id = data[selected[0]][selected[1]].id;
}
if (typeof col !== "number" || !dir) {
return;
}
const indices = [...Array(_data.length).keys()];
if (dir === "asc") {
indices.sort((i, j) =>
_data[i][col].value < _data[j][col].value ? -1 : 1
);
} else if (dir === "des") {
indices.sort((i, j) =>
_data[i][col].value > _data[j][col].value ? -1 : 1
);
} else {
return;
}
// sort all the data and metadata based on the values in the data
const temp_data = [..._data];
const temp_display_value = _display_value ? [..._display_value] : null;
const temp_styling = _styling ? [..._styling] : null;
indices.forEach((originalIndex, sortedIndex) => {
_data[sortedIndex] = temp_data[originalIndex];
if (_display_value && temp_display_value)
_display_value[sortedIndex] = temp_display_value[originalIndex];
if (_styling && temp_styling)
_styling[sortedIndex] = temp_styling[originalIndex];
});
data = data;
if (id) {
const [i, j] = get_current_indices(id);
selected = [i, j];
}
}
$: sort_data(data, display_value, styling, sort_by, sort_direction);
$: selected_index = !!selected && selected[0];
let is_visible = false;
onMount(() => {
const observer = new IntersectionObserver((entries, observer) => {
entries.forEach((entry) => {
if (entry.isIntersecting && !is_visible) {
set_cell_widths();
data = data;
}
is_visible = entry.isIntersecting;
});
});
observer.observe(parent);
return () => {
observer.disconnect();
};
});
</script>
<svelte:window
on:click={handle_click_outside}
on:touchstart={handle_click_outside}
on:resize={() => set_cell_widths()}
/>
<div class:label={label && label.length !== 0} use:copy>
{#if label && label.length !== 0}
<p>
{label}
</p>
{/if}
<div
bind:this={parent}
class="table-wrap"
class:dragging
class:no-wrap={!wrap}
style="height:{table_height}px"
on:keydown={(e) => handle_keydown(e)}
role="grid"
tabindex="0"
>
<table
bind:clientWidth={t_width}
bind:this={table}
class:fixed-layout={column_widths.length != 0}
>
{#if label && label.length !== 0}
<caption class="sr-only">{label}</caption>
{/if}
<thead>
<tr>
{#each _headers as { value, id }, i (id)}
<th
class:editing={header_edit === i}
aria-sort={get_sort_status(value, sort_by, sort_direction)}
style:width={column_widths.length ? column_widths[i] : undefined}
>
<div class="cell-wrap">
<EditableCell
{value}
{latex_delimiters}
{line_breaks}
header
edit={false}
el={null}
/>
<div
class:sorted={sort_by === i}
class:des={sort_by === i && sort_direction === "des"}
class="sort-button {sort_direction} "
>
<svg
width="1em"
height="1em"
viewBox="0 0 9 7"
fill="none"
xmlns="http://www.w3.org/2000/svg"
>
<path d="M4.49999 0L8.3971 6.75H0.602875L4.49999 0Z" />
</svg>
</div>
</div>
</th>
{/each}
</tr>
</thead>
<tbody>
<tr>
{#each max as { value, id }, j (id)}
<td tabindex="-1" bind:this={cells[j]}>
<div class="cell-wrap">
<EditableCell
{value}
{latex_delimiters}
{line_breaks}
datatype={Array.isArray(datatype) ? datatype[j] : datatype}
edit={false}
el={null}
/>
</div>
</td>
{/each}
</tr>
</tbody>
</table>
<Upload
flex={false}
center={false}
boundedheight={false}
disable_click={true}
{root}
on:load={(e) => blob_to_string(data_uri_to_blob(e.detail.data))}
bind:dragging
>
<VirtualTable
bind:items={data}
table_width={t_width}
max_height={height}
bind:actual_height={table_height}
bind:table_scrollbar_width={scrollbar_width}
selected={selected_index}
>
{#if label && label.length !== 0}
<caption class="sr-only">{label}</caption>
{/if}
<tr slot="thead">
{#each _headers as { value, id }, i (id)}
<th
class:focus={header_edit === i || selected_header === i}
aria-sort={get_sort_status(value, sort_by, sort_direction)}
style="width: var(--cell-width-{i});"
>
<div class="cell-wrap">
<EditableCell
bind:value={_headers[i].value}
bind:el={els[id].input}
{latex_delimiters}
{line_breaks}
edit={header_edit === i}
on:keydown={end_header_edit}
on:dblclick={() => edit_header(i)}
{select_on_focus}
header
/>
<!-- TODO: fix -->
<!-- svelte-ignore a11y-click-events-have-key-events -->
<!-- svelte-ignore a11y-no-static-element-interactions-->
<div
class:sorted={sort_by === i}
class:des={sort_by === i && sort_direction === "des"}
class="sort-button {sort_direction} "
on:click={() => handle_sort(i)}
>
<svg
width="1em"
height="1em"
viewBox="0 0 9 7"
fill="none"
xmlns="http://www.w3.org/2000/svg"
>
<path d="M4.49999 0L8.3971 6.75H0.602875L4.49999 0Z" />
</svg>
</div>
</div>
</th>
{/each}
</tr>
<tr slot="tbody" let:item let:index class:row_odd={index % 2 === 0}>
{#each item as { value, id }, j (id)}
<td
tabindex="0"
on:touchstart={() => start_edit(index, j)}
on:click={() => handle_cell_click(index, j)}
on:dblclick={() => start_edit(index, j)}
style:width="var(--cell-width-{j})"
style={styling?.[index]?.[j] || ""}
class:focus={dequal(selected, [index, j])}
>
<div class="cell-wrap">
<EditableCell
bind:value={data[index][j].value}
bind:el={els[id].input}
display_value={display_value?.[index]?.[j]}
{latex_delimiters}
{line_breaks}
{editable}
edit={dequal(editing, [index, j])}
datatype={Array.isArray(datatype) ? datatype[j] : datatype}
on:blur={() => ((clear_on_focus = false), parent.focus())}
{clear_on_focus}
/>
</div>
</td>
{/each}
</tr>
</VirtualTable>
</Upload>
</div>
{#if editable}
<div class="controls-wrap">
{#if row_count[1] === "dynamic"}
<span class="button-wrap">
<BaseButton
variant="secondary"
size="sm"
on:click={(e) => (e.stopPropagation(), add_row())}
>
<svg
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
aria-hidden="true"
role="img"
width="1em"
height="1em"
preserveAspectRatio="xMidYMid meet"
viewBox="0 0 32 32"
>
<path
fill="currentColor"
d="M24.59 16.59L17 24.17V4h-2v20.17l-7.59-7.58L6 18l10 10l10-10l-1.41-1.41z"
/>
</svg>
{i18n("dataframe.new_row")}
</BaseButton>
</span>
{/if}
{#if col_count[1] === "dynamic"}
<span class="button-wrap">
<BaseButton
variant="secondary"
size="sm"
on:click={(e) => (e.stopPropagation(), add_col())}
>
<svg
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
aria-hidden="true"
role="img"
width="1em"
height="1em"
preserveAspectRatio="xMidYMid meet"
viewBox="0 0 32 32"
>
<path
fill="currentColor"
d="m18 6l-1.43 1.393L24.15 15H4v2h20.15l-7.58 7.573L18 26l10-10L18 6z"
/>
</svg>
{i18n("dataframe.new_column")}
</BaseButton>
</span>
{/if}
</div>
{/if}
</div>
<style>
.button-wrap:hover svg {
color: var(--color-accent);
}
.button-wrap svg {
margin-right: var(--size-1);
margin-left: -5px;
}
.label p {
position: relative;
z-index: var(--layer-4);
margin-bottom: var(--size-2);
color: var(--block-label-text-color);
font-size: var(--block-label-text-size);
}
.table-wrap {
position: relative;
transition: 150ms;
border: 1px solid var(--border-color-primary);
border-radius: var(--table-radius);
overflow: hidden;
}
.table-wrap:focus-within {
outline: none;
background-color: none;
}
.dragging {
border-color: var(--color-accent);
}
.no-wrap {
white-space: nowrap;
}
table {
position: absolute;
opacity: 0;
transition: 150ms;
width: var(--size-full);
table-layout: auto;
color: var(--body-text-color);
font-size: var(--input-text-size);
line-height: var(--line-md);
font-family: var(--font-mono);
border-spacing: 0;
}
div:not(.no-wrap) td {
overflow-wrap: anywhere;
}
div.no-wrap td {
overflow-x: hidden;
}
table.fixed-layout {
table-layout: fixed;
}
thead {
position: sticky;
top: 0;
left: 0;
z-index: var(--layer-1);
box-shadow: var(--shadow-drop);
}
tr {
border-bottom: 1px solid var(--border-color-primary);
text-align: left;
}
tr > * + * {
border-right-width: 0px;
border-left-width: 1px;
border-style: solid;
border-color: var(--border-color-primary);
}
th,
td {
--ring-color: transparent;
position: relative;
outline: none;
box-shadow: inset 0 0 0 1px var(--ring-color);
padding: 0;
}
th:first-child {
border-top-left-radius: var(--table-radius);
}
th:last-child {
border-top-right-radius: var(--table-radius);
}
th.focus,
td.focus {
--ring-color: var(--color-accent);
}
tr:last-child td:first-child {
border-bottom-left-radius: var(--table-radius);
}
tr:last-child td:last-child {
border-bottom-right-radius: var(--table-radius);
}
tr th {
background: var(--table-even-background-fill);
}
th svg {
fill: currentColor;
font-size: 10px;
}
.sort-button {
display: flex;
flex: none;
justify-content: center;
align-items: center;
transition: 150ms;
cursor: pointer;
padding: var(--size-2);
color: var(--body-text-color-subdued);
line-height: var(--text-sm);
}
.sort-button:hover {
color: var(--body-text-color);
}
.des {
transform: scaleY(-1);
}
.sort-button.sorted {
color: var(--color-accent);
}
.editing {
background: var(--table-editing);
}
.cell-wrap {
display: flex;
align-items: center;
outline: none;
height: var(--size-full);
min-height: var(--size-9);
}
.controls-wrap {
display: flex;
justify-content: flex-end;
padding-top: var(--size-2);
}
.controls-wrap > * + * {
margin-left: var(--size-1);
}
.row_odd {
background: var(--table-odd-background-fill);
}
.row_odd.focus {
background: var(--background-fill-primary);
}
</style>