다중 범위 선택 (React)

Excel 스타일의 다중 범위 선택을 활성화하려면 FlexGrid의 selectionMode 속성을 MultiRange로 설정합니다.

사용자가 그리드에서 Ctrl+클릭하고 마우스를 끌어 다중 범위를 선택할 수 있게 됩니다.

샘플은 현재 선택 영역(일반 범위 또는 다중 범위)에 대한 Excel 스타일의 동적 데이터 요약을 제공하는 방법을 보여 줍니다.

선택된 범위를 CSV 파일로 내보내는 방법도 보여 줍니다.

클립보드 및 내보내기 명령은 선택된 모든 범위가 동일한 열 범위나 동일한 행 범위를 참조하는 경우에만 다중 범위 선택 영역에서 작동합니다. Excel도 이런 방식으로 동작합니다.

이 데모는 React를 기반으로합니다.

import "@grapecity/wijmo.styles/wijmo.css"; import "bootstrap.css"; import "./app.css"; import * as React from 'react'; import * as ReactDOM from 'react-dom/client'; import { glbz, isNumber, saveFile } from "@grapecity/wijmo"; import { FlexGrid } from "@grapecity/wijmo.react.grid"; import { CellRange } from "@grapecity/wijmo.grid"; ; class App extends React.Component { constructor(props) { super(props); this.grid = null; this.state = { data: this.getData() }; } render() { return <div className="container-fluid"> <FlexGrid alternatingRowStep={0} showMarquee={true} anchorCursor={true} selectionMode="MultiRange" showSelectedHeaders="All" itemsSource={this.state.data} initialized={s => this.grid = s} // update aggregate display when selection changes selectionChanged={(s) => { // calculate aggregates let tally = { cnt: 0, cntAll: 0, sum: 0, avg: 0 }, ranges = this.grid.selectedRanges; for (let i = 0; i < ranges.length; i++) { this.aggregateRange(tally, this.grid, ranges, i); } // update the display using template literals let msg = (tally.cnt > 1) ? glbz `Count: <b>${tally.cntAll}:n0</b>\tAverage: <b>${tally.avg}:g4\tSum: <b>${tally.sum}:g4</b>` : (tally.cntAll > 1) ? glbz `Count: <b>${tally.cntAll}:n0</b>` : 'Ready'; // update the display using wijmo.format //let msg = (tally.cnt > 1) // ? format('Count: <b>{cntAll:n0}</b>\tAverage: <b>{avg:g4}</b>\tSum: <b>{sum:g4}</b>', tally) // : (tally.cntAll > 1) // ? format('Count: <b>{cntAll:n0}</b>', tally) // : 'Ready'; // show the result document.getElementById('mr-aggregates').innerHTML = msg; }}/> <pre id="mr-aggregates">Ready</pre> <button className="btn btn-primary" onClick={() => this.exportGridToCsv(this.grid, false)}> Export Whole Grid </button> {' '} <button id="btn-csv-sel" className="btn btn-primary" onClick={() => this.exportGridToCsv(this.grid, true)}> Export Selection </button> </div>; } // update aggregates for a range, accounting for overlapping ranges aggregateRange(tally, grid, ranges, index) { let rng = ranges[index]; for (let r = rng.topRow; r <= rng.bottomRow; r++) { for (let c = rng.leftCol; c <= rng.rightCol; c++) { // account for overlapping ranges let overlapped = false; for (let i = 0; i < index && !overlapped; i++) { let rng = ranges[i]; if (rng.contains(r, c)) { overlapped = true; } } // tally non-overlapped cells if (!overlapped) { let data = grid.getCellData(r, c, false); if (isNumber(data)) { // handle numbers tally.cnt++; tally.sum += data; } if (data !== '' && data !== null) { // handle non-empty cells tally.cntAll++; } } } } tally.avg = tally.cnt > 0 ? tally.sum / tally.cnt : 0; } // export the grid or selection to CSV exportGridToCsv(grid, selection) { let rng = selection ? null // selection plus extended selection : new CellRange(0, 0, grid.rows.length - 1, grid.columns.length - 1); let csv = grid.getClipString(rng, true, true); saveFile(csv, selection ? 'FlexGridSelection.csv' : 'FlexGrid.csv'); } // create some random data getData() { let data = []; let countries = 'Austria,Belgium,Chile,Denmark,Finland,Japan,UK'.split(','); for (let i = 0; i < 300; i++) { data.push({ id: i, from: countries[i % countries.length], to: countries[(i + 1) % countries.length], sales: Math.random() * 10000, expenses: Math.random() * 5000, amount: Math.random() * 10000, extra: Math.random() * 10000, }); } return data; } } setTimeout(() => { const container = document.getElementById('app'); if (container) { const root = ReactDOM.createRoot(container); root.render(<App />); } }, 100);
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Multiple Selection</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 { height: 300px; }
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