Lit Example: Sub Components

GitHub StackBlitz CodeSandbox

import { customElement, state } from 'lit/decorators.js'
import { LitElement, html } from 'lit'
import { repeat } from 'lit/directives/repeat.js'
import {
  FlexRender,
  TableController,
  createExpandedRowModel,
  rowExpandingFeature,
  tableFeatures,
} from '@tanstack/lit-table'
import { makeData } from './makeData'
import type { ColumnDef, Row } from '@tanstack/lit-table'
import type { Person } from './makeData'

const _features = tableFeatures({ rowExpandingFeature })

const columns: Array<ColumnDef<typeof _features, Person>> = [
  {
    id: 'expander',
    header: () => null,
    cell: ({ row }) =>
      row.getCanExpand()
        ? html`<button
            @click="${row.getToggleExpandedHandler()}"
            style="cursor:pointer"
          >
            ${row.getIsExpanded() ? '👇' : '👉'}
          </button>`
        : html`<span>🔵</span>`,
  },
  {
    accessorKey: 'firstName',
    header: 'First Name',
    cell: ({ row, getValue }) => html`
      <div style="padding-left:${row.depth * 2}rem">${getValue()}</div>
    `,
    footer: (props) => props.column.id,
  },
  {
    accessorFn: (row) => row.lastName,
    id: 'lastName',
    cell: (info) => info.getValue(),
    header: () => html`<span>Last Name</span>`,
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'age',
    header: () => 'Age',
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'visits',
    header: () => html`<span>Visits</span>`,
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'status',
    header: 'Status',
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'progress',
    header: 'Profile Progress',
    footer: (props) => props.column.id,
  },
]

function renderSubComponent(row: Row<typeof _features, Person>) {
  return html`
    <pre style="font-size:10px">
<code>${JSON.stringify(row.original, null, 2)}</code></pre>
  `
}

@customElement('lit-table-example')
class LitTableExample extends LitElement {
  @state()
  private _data: Array<Person> = makeData(10, 5)

  private tableController = new TableController<typeof _features, Person>(this)

  protected render() {
    const table = this.tableController.table(
      {
        _features,
        _rowModels: {
          expandedRowModel: createExpandedRowModel(),
        },
        columns,
        data: this._data,
        getRowCanExpand: () => true,
      },
      (state) => ({
        expanded: state.expanded,
      }),
    )

    return html`
      <div class="demo-root">
        <div>
          <button
            @click=${() => {
              this._data = makeData(10, 5)
            }}
          >
            Regenerate Data
          </button>
          <button
            @click=${() => {
              this._data = makeData(100, 5)
            }}
          >
            Stress Test (100 rows)
          </button>
        </div>
        <div class="spacer-sm"></div>
        <table>
          <thead>
            ${repeat(
              table.getHeaderGroups(),
              (headerGroup) => headerGroup.id,
              (headerGroup) => html`
                <tr>
                  ${headerGroup.headers.map(
                    (header) => html`
                      <th colspan="${header.colSpan}">
                        ${header.isPlaceholder
                          ? null
                          : html`<div>${FlexRender({ header })}</div>`}
                      </th>
                    `,
                  )}
                </tr>
              `,
            )}
          </thead>
          <tbody>
            ${table.getRowModel().rows.map(
              (row) => html`
                <tr>
                  ${row
                    .getAllCells()
                    .map((cell) => html` <td>${FlexRender({ cell })}</td> `)}
                </tr>
                ${row.getIsExpanded()
                  ? html`
                      <tr>
                        <td colspan="${row.getAllCells().length}">
                          ${renderSubComponent(row)}
                        </td>
                      </tr>
                    `
                  : null}
              `,
            )}
          </tbody>
        </table>
        <div class="spacer-sm"></div>
        <div>${table.getRowModel().rows.length.toLocaleString()} Rows</div>
      </div>
      <style>
        * {
          font-family: sans-serif;
          font-size: 14px;
          box-sizing: border-box;
        }

        table {
          border: 1px solid lightgray;
        }

        tbody {
          border-bottom: 1px solid lightgray;
        }

        th {
          border-bottom: 1px solid lightgray;
          border-right: 1px solid lightgray;
          padding: 2px 4px;
        }

        td {
          padding: 2px 4px;
        }

        tfoot {
          color: gray;
        }

        tfoot th {
          font-weight: normal;
        }

        /* Demo layout helpers for the plain example UI. */
        .demo-root {
          padding: 0.5rem;
        }
        .spacer-xs {
          height: 0.25rem;
        }
        .spacer-sm {
          height: 0.5rem;
        }
        .spacer-md {
          height: 1rem;
        }
        .controls,
        .button-row,
        .inline-controls,
        .pin-actions,
        .filter-row,
        .form-actions {
          display: flex;
          align-items: center;
        }
        .button-row {
          flex-wrap: wrap;
          gap: 0.5rem;
        }
        .controls {
          gap: 0.5rem;
        }
        .inline-controls,
        .pin-actions {
          gap: 0.25rem;
        }
        .pin-actions {
          justify-content: center;
        }
        .filter-row {
          gap: 0.5rem;
        }
        .form-actions {
          gap: 1rem;
          margin-bottom: 1rem;
        }
        .split-tables {
          display: flex;
          gap: 1rem;
        }
        .table-row-group {
          display: flex;
        }
        .split-gap {
          gap: 1rem;
        }
        .vertical-options {
          display: flex;
          flex-direction: column;
          gap: 0.5rem;
          align-items: center;
        }
        .column-toggle-panel {
          display: inline-block;
          border: 1px solid #000;
          border-radius: 0.25rem;
          box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
        }
        .column-toggle-panel-header {
          border-bottom: 1px solid #000;
          padding: 0 0.25rem;
        }
        .column-toggle-row,
        .selection-cell {
          padding: 0 0.25rem;
        }
        .selection-cell {
          display: block;
        }
        .demo-button,
        .pin-button,
        .compact-input,
        .filter-input,
        .filter-select,
        .page-size-input,
        .text-input,
        .number-input,
        .wide-action-button,
        .primary-action,
        .secondary-action,
        .success-action {
          border: 1px solid currentColor;
          border-radius: 0.25rem;
        }
        .demo-button {
          padding: 0.5rem;
        }
        .demo-button-sm {
          padding: 0.25rem;
        }
        .demo-button-spaced {
          margin-bottom: 0.5rem;
        }
        .pin-button {
          padding: 0 0.5rem;
        }
        .outlined-table {
          border: 2px solid #000;
        }
        .outlined-control {
          border-color: #000;
        }
        .nowrap {
          white-space: nowrap;
        }
        .demo-note {
          margin-bottom: 0.5rem;
          font-size: 0.875rem;
        }
        .section-title {
          font-size: 1.25rem;
        }
        .scroll-container {
          overflow-x: auto;
        }
        .page-size-input {
          width: 4rem;
          padding: 0.25rem;
        }
        .number-input {
          width: 5rem;
          padding: 0 0.25rem;
        }
        .filter-input,
        .filter-select {
          width: 6rem;
          box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
        }
        .filter-select {
          width: 9rem;
        }
        .text-input {
          width: 100%;
          padding: 0 0.25rem;
        }
        .compact-input {
          padding: 0 0.25rem;
        }
        .wide-action-button {
          width: 16rem;
        }
        .summary-panel {
          border: 1px solid currentColor;
          box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
          padding: 0.5rem;
        }
        .sortable-header,
        .sortable {
          cursor: pointer;
          user-select: none;
        }
        .primary-action,
        .success-action,
        .secondary-action {
          color: #fff;
        }
        .primary-action {
          background: #3b82f6;
        }
        .success-action {
          background: #22c55e;
        }
        .secondary-action {
          background: #6b7280;
        }
        .submit-button:disabled {
          opacity: 0.5;
        }
        .error-text {
          color: #ef4444;
          font-size: 0.75rem;
        }
        .success-text {
          color: #16a34a;
        }
        .warning-text {
          color: #ca8a04;
        }
        .muted-text {
          color: #9ca3af;
        }
        .label-offset {
          margin-left: 0.5rem;
        }
        .cell-padding {
          padding: 0.25rem;
        }
        .table-spacer {
          margin-bottom: 0.5rem;
        }
        .centered-button-row {
          display: flex;
          flex-wrap: wrap;
          justify-content: center;
          gap: 0.5rem;
        }
      </style>
    `
  }
}

import { customElement, state } from 'lit/decorators.js'
import { LitElement, html } from 'lit'
import { repeat } from 'lit/directives/repeat.js'
import {
  FlexRender,
  TableController,
  createExpandedRowModel,
  rowExpandingFeature,
  tableFeatures,
} from '@tanstack/lit-table'
import { makeData } from './makeData'
import type { ColumnDef, Row } from '@tanstack/lit-table'
import type { Person } from './makeData'

const _features = tableFeatures({ rowExpandingFeature })

const columns: Array<ColumnDef<typeof _features, Person>> = [
  {
    id: 'expander',
    header: () => null,
    cell: ({ row }) =>
      row.getCanExpand()
        ? html`<button
            @click="${row.getToggleExpandedHandler()}"
            style="cursor:pointer"
          >
            ${row.getIsExpanded() ? '👇' : '👉'}
          </button>`
        : html`<span>🔵</span>`,
  },
  {
    accessorKey: 'firstName',
    header: 'First Name',
    cell: ({ row, getValue }) => html`
      <div style="padding-left:${row.depth * 2}rem">${getValue()}</div>
    `,
    footer: (props) => props.column.id,
  },
  {
    accessorFn: (row) => row.lastName,
    id: 'lastName',
    cell: (info) => info.getValue(),
    header: () => html`<span>Last Name</span>`,
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'age',
    header: () => 'Age',
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'visits',
    header: () => html`<span>Visits</span>`,
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'status',
    header: 'Status',
    footer: (props) => props.column.id,
  },
  {
    accessorKey: 'progress',
    header: 'Profile Progress',
    footer: (props) => props.column.id,
  },
]

function renderSubComponent(row: Row<typeof _features, Person>) {
  return html`
    <pre style="font-size:10px">
<code>${JSON.stringify(row.original, null, 2)}</code></pre>
  `
}

@customElement('lit-table-example')
class LitTableExample extends LitElement {
  @state()
  private _data: Array<Person> = makeData(10, 5)

  private tableController = new TableController<typeof _features, Person>(this)

  protected render() {
    const table = this.tableController.table(
      {
        _features,
        _rowModels: {
          expandedRowModel: createExpandedRowModel(),
        },
        columns,
        data: this._data,
        getRowCanExpand: () => true,
      },
      (state) => ({
        expanded: state.expanded,
      }),
    )

    return html`
      <div class="demo-root">
        <div>
          <button
            @click=${() => {
              this._data = makeData(10, 5)
            }}
          >
            Regenerate Data
          </button>
          <button
            @click=${() => {
              this._data = makeData(100, 5)
            }}
          >
            Stress Test (100 rows)
          </button>
        </div>
        <div class="spacer-sm"></div>
        <table>
          <thead>
            ${repeat(
              table.getHeaderGroups(),
              (headerGroup) => headerGroup.id,
              (headerGroup) => html`
                <tr>
                  ${headerGroup.headers.map(
                    (header) => html`
                      <th colspan="${header.colSpan}">
                        ${header.isPlaceholder
                          ? null
                          : html`<div>${FlexRender({ header })}</div>`}
                      </th>
                    `,
                  )}
                </tr>
              `,
            )}
          </thead>
          <tbody>
            ${table.getRowModel().rows.map(
              (row) => html`
                <tr>
                  ${row
                    .getAllCells()
                    .map((cell) => html` <td>${FlexRender({ cell })}</td> `)}
                </tr>
                ${row.getIsExpanded()
                  ? html`
                      <tr>
                        <td colspan="${row.getAllCells().length}">
                          ${renderSubComponent(row)}
                        </td>
                      </tr>
                    `
                  : null}
              `,
            )}
          </tbody>
        </table>
        <div class="spacer-sm"></div>
        <div>${table.getRowModel().rows.length.toLocaleString()} Rows</div>
      </div>
      <style>
        * {
          font-family: sans-serif;
          font-size: 14px;
          box-sizing: border-box;
        }

        table {
          border: 1px solid lightgray;
        }

        tbody {
          border-bottom: 1px solid lightgray;
        }

        th {
          border-bottom: 1px solid lightgray;
          border-right: 1px solid lightgray;
          padding: 2px 4px;
        }

        td {
          padding: 2px 4px;
        }

        tfoot {
          color: gray;
        }

        tfoot th {
          font-weight: normal;
        }

        /* Demo layout helpers for the plain example UI. */
        .demo-root {
          padding: 0.5rem;
        }
        .spacer-xs {
          height: 0.25rem;
        }
        .spacer-sm {
          height: 0.5rem;
        }
        .spacer-md {
          height: 1rem;
        }
        .controls,
        .button-row,
        .inline-controls,
        .pin-actions,
        .filter-row,
        .form-actions {
          display: flex;
          align-items: center;
        }
        .button-row {
          flex-wrap: wrap;
          gap: 0.5rem;
        }
        .controls {
          gap: 0.5rem;
        }
        .inline-controls,
        .pin-actions {
          gap: 0.25rem;
        }
        .pin-actions {
          justify-content: center;
        }
        .filter-row {
          gap: 0.5rem;
        }
        .form-actions {
          gap: 1rem;
          margin-bottom: 1rem;
        }
        .split-tables {
          display: flex;
          gap: 1rem;
        }
        .table-row-group {
          display: flex;
        }
        .split-gap {
          gap: 1rem;
        }
        .vertical-options {
          display: flex;
          flex-direction: column;
          gap: 0.5rem;
          align-items: center;
        }
        .column-toggle-panel {
          display: inline-block;
          border: 1px solid #000;
          border-radius: 0.25rem;
          box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
        }
        .column-toggle-panel-header {
          border-bottom: 1px solid #000;
          padding: 0 0.25rem;
        }
        .column-toggle-row,
        .selection-cell {
          padding: 0 0.25rem;
        }
        .selection-cell {
          display: block;
        }
        .demo-button,
        .pin-button,
        .compact-input,
        .filter-input,
        .filter-select,
        .page-size-input,
        .text-input,
        .number-input,
        .wide-action-button,
        .primary-action,
        .secondary-action,
        .success-action {
          border: 1px solid currentColor;
          border-radius: 0.25rem;
        }
        .demo-button {
          padding: 0.5rem;
        }
        .demo-button-sm {
          padding: 0.25rem;
        }
        .demo-button-spaced {
          margin-bottom: 0.5rem;
        }
        .pin-button {
          padding: 0 0.5rem;
        }
        .outlined-table {
          border: 2px solid #000;
        }
        .outlined-control {
          border-color: #000;
        }
        .nowrap {
          white-space: nowrap;
        }
        .demo-note {
          margin-bottom: 0.5rem;
          font-size: 0.875rem;
        }
        .section-title {
          font-size: 1.25rem;
        }
        .scroll-container {
          overflow-x: auto;
        }
        .page-size-input {
          width: 4rem;
          padding: 0.25rem;
        }
        .number-input {
          width: 5rem;
          padding: 0 0.25rem;
        }
        .filter-input,
        .filter-select {
          width: 6rem;
          box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
        }
        .filter-select {
          width: 9rem;
        }
        .text-input {
          width: 100%;
          padding: 0 0.25rem;
        }
        .compact-input {
          padding: 0 0.25rem;
        }
        .wide-action-button {
          width: 16rem;
        }
        .summary-panel {
          border: 1px solid currentColor;
          box-shadow: 0 1px 3px rgb(0 0 0 / 0.2);
          padding: 0.5rem;
        }
        .sortable-header,
        .sortable {
          cursor: pointer;
          user-select: none;
        }
        .primary-action,
        .success-action,
        .secondary-action {
          color: #fff;
        }
        .primary-action {
          background: #3b82f6;
        }
        .success-action {
          background: #22c55e;
        }
        .secondary-action {
          background: #6b7280;
        }
        .submit-button:disabled {
          opacity: 0.5;
        }
        .error-text {
          color: #ef4444;
          font-size: 0.75rem;
        }
        .success-text {
          color: #16a34a;
        }
        .warning-text {
          color: #ca8a04;
        }
        .muted-text {
          color: #9ca3af;
        }
        .label-offset {
          margin-left: 0.5rem;
        }
        .cell-padding {
          padding: 0.25rem;
        }
        .table-spacer {
          margin-bottom: 0.5rem;
        }
        .centered-button-row {
          display: flex;
          flex-wrap: wrap;
          justify-content: center;
          gap: 0.5rem;
        }
      </style>
    `
  }
}