Slicer (React)

The Slicer control provides a quick way to edit filters applied to PivotField objects. It provides buttons the user can click to filter data based on values and indicates the current filtering state, which makes it easy to understand what is shown in filtered PivotGrid and PivotChart controls.

Learn about OLAP | Slicer Documentation | Slicer API Reference

This example uses React.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useRef, useState } from 'react'; import '@mescius/wijmo.touch'; // support drag/drop on touch devices import * as Olap from '@mescius/wijmo.react.olap'; import * as wjcOlap from '@mescius/wijmo.olap'; import './app.css'; import { getData } from './data'; const ng = new wjcOlap.PivotEngine({ itemsSource: getData(1000), valueFields: ['Amount'], rowFields: ['Buyer'], filterFields: ['Date'] // filter }); const fldAmount = ng.fields.getField('Amount'); fldAmount.format = 'c0'; const fldDate = ng.fields.getField('Date'); fldDate.format = 'MMMM yyyy'; function App() { const [showHeader, setShowHeader] = useState(true); const [showCheckboxes, setShowCheckboxes] = useState(false); const slicer = useRef(); const onShowHeaderClick = (e) => { setShowHeader(e.target.checked); }; const onShowCheckboxesClick = (e) => { setShowCheckboxes(e.target.checked); }; const onEditFieldClick = () => { ng.editField(slicer.current.field); }; return (<div className="container-fluid"> <div className="row"> <div className="col-sm-6"> <p>Slicer:</p> <Olap.Slicer id="sample-slicer" field={fldDate} initialized={(control) => slicer.current = control} showCheckboxes={showCheckboxes} showHeader={showHeader}/> </div> <div className="col-sm-6"> <p> Amount spent by each buyer. </p> <Olap.PivotGrid itemsSource={ng}/> </div> </div> <p> You can customize the <b>Slicer</b> control to hide or show a header, and to hide or show checkboxes next to each item: </p> <label> Show Header <input id="showHeader" type="checkbox" checked={showHeader} onClick={onShowHeaderClick}/> </label> <br /> <label> Show Checkboxes <input id="showCheckboxes" type="checkbox" checked={showCheckboxes} onClick={onShowCheckboxesClick}/> </label> <p> If you change the <b>format</b> property of the field being filtered by the <b>Slicer</b>, the value list is updated automatically: </p> <button className="btn btn-primary" id="editfield" onClick={onEditFieldClick}> Edit Date Field... </button> </div>); } const container = document.getElementById('app'); if (container) { const root = ReactDOM.createRoot(container); root.render(<App />); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo Wijmo OLAP Slicer</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.40/system.src.js" integrity="sha512-G6mEj6h18+m3MvzdviSDfPle/TfH0//cXcB33AKlNR/Rha0yQsKefDZKRTkIZos97HEGq2JMV1RT5ybMoQ3WsQ==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html>
.wj-pivotgrid { max-height: 300px; } #sample-slicer { display: block; max-height: 200px; margin: 12px; }
import * as wjcCore from '@mescius/wijmo'; export function getData(cnt) { var today = new Date(), buyers = 'Mom,Dad,Kelly,Sheldon'.split(','), types = 'Food,Clothes,Fuel,Books,Sports,Music'.split(','), data = []; for (var i = 0; i < cnt; i++) { data.push({ date: wjcCore.DateTime.addDays(today, -Math.random() * 365), buyer: randomItem(buyers), type: randomItem(types), amount: 20 + Math.random() * 1000 }); } return data; } function randomItem(arr) { return arr[Math.floor(Math.random() * arr.length)]; }
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