front_end/ui/components/docs/data_grid/adding-data.ts

// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as DataGrid from '../../data_grid/data_grid.js';
import * as ComponentHelpers from '../../helpers/helpers.js';

await ComponentHelpers.ComponentServerSetup.setup();

const component = new DataGrid.DataGrid.DataGrid();

component.data = {
  columns: [
    {id: 'key', title: 'Key', widthWeighting: 1, visible: true, hideable: false},
    {id: 'value', title: 'Value', widthWeighting: 1, visible: true, hideable: false},
  ],
  rows: Array.from(
      {length: 10},
      () => {
        return getRandomRow();
      }),
  activeSort: null,
};

document.getElementById('container')?.appendChild(component);

function getRandomRow() {
  const key = Math.floor(Math.random() * 10);
  const value = Math.floor(Math.random() * 10);
  const randomDataRow = {
    cells: [
      {columnId: 'key', value: `Key: ${key}`, title: `Key: ${key}`},
      {columnId: 'value', value: `Value: ${value}`, title: `Value: ${value}`},
    ],
  };
  return randomDataRow;
}

/**
 * Set so we can call this from an interaction test to emulate the user
 * interacting with the data grid whilst something is populating the grid with
 * new data - e.g. like the protocol monitor.
 */
// @ts-expect-error
window.addNewRow = function() {
  addNewRow();
};

function addNewRow() {
  const newRow = getRandomRow();

  component.data = {
    ...component.data,
    rows: [...component.data.rows, newRow],
  };
}

document.querySelector('#add')?.addEventListener('click', (event: Event) => {
  event.preventDefault();
  addNewRow();
});