DataMaps

In many situations, you may want columns to map values so cells display a value that is different from what is actually stored in the grid. You could accomplish both tasks using the formatItem event, but the FlexGrid provides a better alternative: DataMaps. If you set a column's dataMap property to an instance of a DataMap, the grid will use it to look up display values for each data item, and provide a drop-down list with valid items when editing the cells.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import '@grapecity/wijmo.input'; import { FlexGrid, DataMap } from '@grapecity/wijmo.grid'; document.readyState === 'complete' ? init() : window.onload = init; function init() { // create some random data var countries = 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','); var customers = [ { id: 0, name: 'Paul Perkins', address: '123 Main St' }, { id: 1, name: 'Susan Smith', address: '456 Grand Ave' }, { id: 2, name: 'Joan Jett', address: '789 Broad St' }, { id: 3, name: 'Don Davis', address: '321 Shattuck Ave' }, ]; var data = []; for (var i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], customer: customers[i % customers.length].id, active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } // create customer data map var customerMap = new DataMap(customers, 'id', 'name'); // show the data in a grid var theGrid = new FlexGrid('#theGrid', { alternatingRowStep: 0, autoGenerateColumns: false, columns: [ { binding: 'customer', header: 'Customer', width: '1.5*', dataMap: customerMap }, { binding: 'country', header: 'Country', width: '*', dataMap: countries }, { binding: 'downloads', header: 'Downloads', width: '*', format: 'n0' }, { binding: 'sales', header: 'Sales', width: '*', format: 'n0' }, { binding: 'expenses', header: 'Expenses', width: '*', format: 'n0' } ], itemsSource: data, }); // show customers as well var theGridCustomers = new FlexGrid('#theGridCustomers', { itemsSource: customers, rowEditEnded: function () { let column = theGrid.getColumn('customer'); if (column) { column.dataMap = new DataMap(customers, 'id', 'name'); } theGrid.refresh(); // update customer names on the main grid } }); } <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Column DataMaps</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="theGrid"> </div> <p> And here is another grid showing all the customers. If you edit their names, you will see the change in the top grid:</p> <div id="theGridCustomers"> </div> </div> </body> </html> .wj-flexgrid { max-height: 200px; margin: 12px 0; } import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import { Component, enableProdMode, NgModule, ViewChild } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import * as wjcGrid from '@grapecity/wijmo.grid'; import { WjGridModule } from '@grapecity/wijmo.angular2.grid'; import { WjInputModule } from '@grapecity/wijmo.angular2.input'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: any[]; customerMap: wjcGrid.DataMap; countries = 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','); customers = [ { id: 0, name: 'Paul Perkins', address: '123 Main St' }, { id: 1, name: 'Susan Smith', address: '456 Grand Ave' }, { id: 2, name: 'Joan Jett', address: '789 Broad St' }, { id: 3, name: 'Don Davis', address: '321 Shattuck Ave' }, ]; @ViewChild('mainGrid') mainGrid: wjcGrid.FlexGrid; // DataSvc will be passed by derived classes constructor() { this.data = this._getData(); this.customerMap = new wjcGrid.DataMap(this.customers, 'id', 'name'); } dataMapGridInitialized(flexgrid: wjcGrid.FlexGrid) { flexgrid.rowEditEnded.addHandler(() => { let column = this.mainGrid.getColumn('customer'); if (column) { column.dataMap = new wjcGrid.DataMap(this.customers, 'id', 'name'); } this.mainGrid.refresh(); // update customer names on the main grid }); } private _getData() { let data = []; for (let i = 0; i < this.countries.length; i++) { data.push({ id: i, country: this.countries[i], customer: this.customers[i % this.customers.length].id, active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } return data; } } // @NgModule({ imports: [WjGridModule, WjInputModule, BrowserModule], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Column DataMaps</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html> <div class="container-fluid"> <wj-flex-grid #mainGrid [(itemsSource)]="data"> <wj-flex-grid-column [header]="'Customer'" [binding]="'customer'" width="1.5*" [dataMap]="customerMap"></wj-flex-grid-column> <wj-flex-grid-column [header]="'Country'" [binding]="'country'" width="*" [dataMap]="countries"></wj-flex-grid-column> <wj-flex-grid-column [header]="'Downloads'" [binding]="'downloads'" width="*" format="n0"></wj-flex-grid-column> <wj-flex-grid-column [header]="'Sales'" [binding]="'sales'" width="*" format="n0"></wj-flex-grid-column> <wj-flex-grid-column [header]="'Expenses'" [binding]="'expenses'" width="*" format="n0"></wj-flex-grid-column> </wj-flex-grid> <p> And here is another grid showing all the customers. If you edit their names, you will see the change in the top grid:</p> <wj-flex-grid #dataMapGrid [(itemsSource)]="customers" (initialized)="dataMapGridInitialized(dataMapGrid)"></wj-flex-grid> </div> .wj-flexgrid { max-height: 200px; margin: 12px 0; } <template> <div class="container-fluid"> <wj-flex-grid :itemsSource="data" :initialized="mainGridInitialized"> <wj-flex-grid-column header="Customer" binding="customer" width="1.5*" :dataMap="customerMap"></wj-flex-grid-column> <wj-flex-grid-column header="Country" binding="country" width="*" :dataMap="countries"></wj-flex-grid-column> <wj-flex-grid-column header="Downloads" binding="downloads" width="*" format="n0"></wj-flex-grid-column> <wj-flex-grid-column header="Sales" binding="sales" width="*" format="n0"></wj-flex-grid-column> <wj-flex-grid-column header="Expenses" binding="expenses" width="*" format="n0"></wj-flex-grid-column> </wj-flex-grid> <p> And here is another grid showing all the customers. If you edit their names, you will see the change in the top grid:</p> <wj-flex-grid :itemsSource="customers" :initialized="dataMapGridInitialized"></wj-flex-grid> </div> </template> <script> import "@grapecity/wijmo.styles/wijmo.css"; import "bootstrap.css"; import Vue from "vue"; import "@grapecity/wijmo.vue2.grid"; import * as wjcGrid from "@grapecity/wijmo.grid"; new Vue({ el: "#app", data: function() { return { countries: 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), customers: [ { id: 0, name: 'Paul Perkins', address: '123 Main St' }, { id: 1, name: 'Susan Smith', address: '456 Grand Ave' }, { id: 2, name: 'Joan Jett', address: '789 Broad St' }, { id: 3, name: 'Don Davis', address: '321 Shattuck Ave' }, ], data: null, customerMap: null }; }, methods:{ mainGridInitialized(mainGrid){ this.mainGrid = mainGrid; }, dataMapGridInitialized(flexgrid) { this.data = this._getData(); this.customerMap = new wjcGrid.DataMap(this.customers, 'id', 'name'); var _this = this; flexgrid.rowEditEnded.addHandler(() => { let column = this.mainGrid.getColumn('customer'); if (column) { column.dataMap = new wjcGrid.DataMap(_this.customers, 'id', 'name'); } this.mainGrid.refresh(); // update customer names on the main grid }); }, _getData() { let data = []; for (let i = 0; i < this.countries.length; i++) { data.push({ id: i, country: this.countries[i], customer: this.customers[i % this.customers.length].id, active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } return data; } } }); </script> <style> .wj-flexgrid { max-height: 200px; margin: 12px 0; } </style> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>AutoComplete</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.vue'); </script> </head> <body> <div id="app"> </div> </body> </html> import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './app.css'; // import * as React from 'react'; import * as ReactDOM from 'react-dom'; import * as wjcGrid from '@grapecity/wijmo.grid'; import * as wjGrid from '@grapecity/wijmo.react.grid'; class App extends React.Component { constructor(props) { super(props); this.state = { data: null, customerMap: null, countries: 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','), customers: [ { id: 0, name: 'Paul Perkins', address: '123 Main St' }, { id: 1, name: 'Susan Smith', address: '456 Grand Ave' }, { id: 2, name: 'Joan Jett', address: '789 Broad St' }, { id: 3, name: 'Don Davis', address: '321 Shattuck Ave' }, ] }; } render() { return <div className="container-fluid"> <wjGrid.FlexGrid initialized={this.mainGridInitialized.bind(this)} itemsSource={this.state.data}> <wjGrid.FlexGridColumn header="Customer" binding="customer" width="1.5*" dataMap={this.state.customerMap}> </wjGrid.FlexGridColumn> <wjGrid.FlexGridColumn header="Country" binding="country" width="*" dataMap={this.state.countries}> </wjGrid.FlexGridColumn> <wjGrid.FlexGridColumn header="Downloads" binding="downloads" width="*" format="n0"> </wjGrid.FlexGridColumn> <wjGrid.FlexGridColumn header="Sales" binding="sales" width="*" format="n0"> </wjGrid.FlexGridColumn> <wjGrid.FlexGridColumn header="Expenses" binding="expenses" width="*" format="n0"> </wjGrid.FlexGridColumn> </wjGrid.FlexGrid> <p> And here is another grid showing all the customers. If you edit their names, you will see the change in the top grid: </p> <wjGrid.FlexGrid initialized={this.dataMapGridInitialized.bind(this)} itemsSource={this.state.customers}> </wjGrid.FlexGrid> </div>; } mainGridInitialized(mainGrid) { this.mainGrid = mainGrid; } dataMapGridInitialized(flexGrid) { var data = this.getData(); var customerMap = new wjcGrid.DataMap(this.state.customers, 'id', 'name'); var _this = this; flexGrid.rowEditEnded.addHandler(() => { let column = this.mainGrid.getColumn('customer'); if (column) { column.dataMap = new wjcGrid.DataMap(_this.state.customers, 'id', 'name'); } this.mainGrid.refresh(); // update customer names on the main grid }); this.setState({ data: data, customerMap: customerMap }); } getData() { let data = []; for (let i = 0; i < this.state.countries.length; i++) { data.push({ id: i, country: this.state.countries[i], customer: this.state.customers[i % this.state.customers.length].id, active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.random() * 100000, expenses: Math.random() * 50000 }); } return data; } } ReactDOM.render(<App />, document.getElementById('app')); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Column DataMaps</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html> .wj-flexgrid { max-height: 200px; margin: 12px 0; }