ピボットパネル:ソート (React)

PivotEngineは、データ集計を生成するときに行列フィールドを自動的にソートします。デフォルトでは値フィールドはソートされません。フィールドのsortプロパティをコードで設定することで、行フィールドと列フィールドのソート方向を変更できます。値フィールドはデフォルトではソートされません。エンジンのpivotView コレクションのsortDescriptions プロパティを変更することでそれらのソート方向を設定できます。この例では、行列フィールドと値フィールドにソートを適用する方法を示します。

このサンプルはReactを使用しています。

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useRef } from 'react'; import useEvent from 'react-use-event-hook'; import '@mescius/wijmo.touch'; // support drag/drop on touch devices import * as Olap from '@mescius/wijmo.react.olap'; import * as wjInput from '@mescius/wijmo.react.input'; import * as wjcCore from '@mescius/wijmo'; import * as wjcOlap from '@mescius/wijmo.olap'; import './app.css'; import { getData } from './data'; const ng = new wjcOlap.PivotEngine({ autoGenerateFields: false, itemsSource: getData(100), fields: [ { binding: 'country', header: '国' }, { binding: 'product', header: '商品' }, { binding: 'sales', header: '売上' }, { binding: 'expenses', header: '費用' }, ], rowFields: ['国', '商品'], valueFields: ['売上', '費用'] }); function App() { const pivotGridRef = useRef(); const sortSalesRef = useRef(); const sortExpensesRef = useRef(); const sortOptions = '昇順,降順'.split(','); const sortOptions2 = 'なし,昇順,降順'.split(','); const initializePivotGrid = useEvent((pivotGrid) => { pivotGridRef.current = pivotGrid; }); const initializeSortSales = useEvent((combo) => { sortSalesRef.current = combo; }); const initializeSortExpenses = useEvent((combo) => { sortExpensesRef.current = combo; }); const onCountrySelectedIndexChanged = useEvent((combo) => { ng.fields.getField('国').descending = combo.selectedIndex == 1; }); const onProductSelectedIndexChanged = useEvent((combo) => { ng.fields.getField('商品').descending = combo.selectedIndex == 1; }); const onSubtotalsClick = (e) => { ng.showRowTotals = e.target.checked ? wjcOlap.ShowTotals.Subtotals : wjcOlap.ShowTotals.GrandTotals; }; const updateMeasureSort = () => { let sd = ng.pivotView.sortDescriptions; sd.clear(); addMeasureSort('売上', sortSalesRef.current.text); addMeasureSort('費用', sortExpensesRef.current.text); }; const addMeasureSort = (fieldName, sortDirection) => { if (sortDirection != 'なし') { let sd = ng.pivotView.sortDescriptions, cols = pivotGridRef.current.columns; for (let c = 0; c < cols.length; c++) { let binding = cols[c].binding; if (binding.indexOf(fieldName) == 0) { sd.push(new wjcCore.SortDescription(binding, sortDirection == '昇順')); } } } }; return (<div className="container-fluid"> <div className="row"> <div className="col-sm-4 panel"> <h4 className="sample-h4"> 行列フィールドのソート </h4> <label> 国: <wjInput.ComboBox itemsSource={sortOptions} selectedIndexChanged={onCountrySelectedIndexChanged}/> </label> <label> 商品: <wjInput.ComboBox itemsSource={sortOptions} selectedIndexChanged={onProductSelectedIndexChanged}/> </label> <h4 className="sample-h4"> 値フィールドのソート </h4> <label> 売上: <wjInput.ComboBox itemsSource={sortOptions2} initialized={initializeSortSales} selectedIndexChanged={updateMeasureSort}/> </label> <label> 費用: <wjInput.ComboBox itemsSource={sortOptions2} initialized={initializeSortExpenses} selectedIndexChanged={updateMeasureSort}/> </label> <label> 小計: <input id="subtotals" type="checkbox" onClick={onSubtotalsClick}/> </label> </div> <div className="col-sm-8"> <Olap.PivotGrid itemsSource={ng} initialized={initializePivotGrid}/> </div> </div> </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 Fields Sort</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 { box-shadow: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23); } .panel label { display: block; } .panel label .wj-combobox { font-weight: normal; } h4.sample-h4 { margin-top: 20pt; }
export function getData(cnt) { var countries = 'アメリカ,ドイツ,イギリス,日本,イタリア'.split(','), products = 'ウィジェット,ガジェット,ツール'.split(','), data = []; for (var i = 0; i < cnt; i++) { data.push({ country: countries[i % countries.length], product: products[i % products.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; }
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