Marking a baseline

import * as ng from '@angular/core';
import { Component, ViewChild } from '@angular/core';
import { bootstrapApplication } from '@angular/platform-browser';
import { createGrid } from '@toclocoinc/lattice-grid';
import '@toclocoinc/lattice-grid/css';
import createLatticeGrid from '@toclocoinc/lattice-grid/modules/angular';

const { LatticeGridComponent } = createLatticeGrid({ ng, createGrid });

const columns = [
  { field: 'symbol', title: 'Symbol', layout: { pin: 'start', width: 120 } },
  { field: 'price', title: 'Price', type: 'number' },
  { id: 'delta', title: 'Change', shadow: { of: 'price', kind: 'delta' }, type: 'number', format: { signed: true } },
  { id: 'first', title: 'Baseline', shadow: { of: 'price', kind: 'firstValue' }, type: 'number' },
];

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [LatticeGridComponent],
  template:
    '<button (click)="markAll()">Mark all</button>' +
    '<lattice-grid [config]="grid" style="display:block;height:440px;margin-top:8px"></lattice-grid>',
})
export class AppComponent {
  @ViewChild(LatticeGridComponent) gridRef!: LatticeGridComponent;

  grid = {
    rowKey: 'id',
    columns,
    rows: [/* a live price book */],
  };

  // rebase moves every baseline to the current value, so the deltas start again.
  markAll() {
    const grid = this.gridRef && this.gridRef.grid;
    if (grid) grid.statistics.rebase('price');
  }
}

bootstrapApplication(AppComponent);