demo D208

Configuring a type in Angular

One field, five presentations; the stored value never changes

createUnitType({ display, decimals, … })

This grid shows one stored field presented five different ways, with the underlying value never changing. It shows that display is a setting, not a rewrite, so you can change decimals, symbols or format without touching the data behind the column.

Building…

Loading a live grid…

This is the Angular version. A standalone component takes the whole configuration through one config input, surfaces grid events as outputs, and exposes the live grid on a getter for anything the inputs do not cover.

The configuration

import { Component } from '@angular/core';
import { bootstrapApplication } from '@angular/platform-browser';
import { createGrid, createUnitType } from '@toclocoinc/lattice-grid';
import '@toclocoinc/lattice-grid/css';
import { LatticeGridComponent, provideLattice } from '@toclocoinc/lattice-grid/angular';

// The same field stored in metres, shown four ways. The stored value never
// changes; only the display does.
const dataTypes = {
  spanAuto: createUnitType({ system: 'length', unit: 'm', display: 'auto' }),
  spanMm:   createUnitType({ system: 'length', unit: 'm', display: 'mm' }),
  spanKm:   createUnitType({ system: 'length', unit: 'm', display: 'km', decimals: 3 }),
  spanSig:  createUnitType({ system: 'length', unit: 'm', display: 'auto', significantFigures: 3 }),
};

const columns = [
  { field: 'run', title: 'Run', layout: { pin: 'start', width: 120 } },
  { field: 'span', id: 'stored', title: 'Stored (m)', type: 'number' },
  { field: 'span', id: 'auto', title: "display: 'auto'", type: 'spanAuto' },
  { field: 'span', id: 'mm', title: "display: 'mm'", type: 'spanMm' },
  { field: 'span', id: 'km', title: "display: 'km'", type: 'spanKm' },
  { field: 'span', id: 'sig', title: '3 sig figs', type: 'spanSig' },
];

const rows = [/* runs, each with a span in metres */];



@Component({
  selector: 'app-root',
  standalone: true,
  imports: [LatticeGridComponent],
  template: '<lattice-grid [config]="grid" style="display:block;height:460px"></lattice-grid>',
})
export class AppComponent {
  grid = {
    rowKey: 'id',
    dataTypes: dataTypes,
    columns: columns,
    rows: rows,
  };
}

bootstrapApplication(AppComponent, {
  providers: [provideLattice({ createGrid })],
});