팝업 열 선택기 (React)

그리드의 columns 속성, ListBox 컨트롤, Wijmo의 showPopuphidePopup 메서드를 사용하여 열 선택기 UI를 간편하게 구현할 수 있습니다. 예를 들어 아래 그리드는 자동 생성된 열 집합으로 시작됩니다. 왼쪽 위 셀에 있는 기어 아이콘을 클릭하여 ListBox를 표시하고, 여기서 표시하려는 열을 선택할 수 있습니다.

이 데모는 React를 기반으로합니다.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useEffect, useRef, useState } from 'react'; import useEvent from 'react-use-event-hook'; import { showPopup, hidePopup, hasClass, contains, closest, createElement, getElement, removeChild } from '@mescius/wijmo'; import { ListBox } from '@mescius/wijmo.react.input'; import { FlexGrid } from '@mescius/wijmo.react.grid'; import './app.css'; import { data } from './data'; function App() { const [isDragEnabled, setIsDragEnabled] = useState(false); const flexRef = useRef(null); const columnPicker = useRef(null); const dragSrc = useRef(null); const dragDst = useRef(null); useEffect(() => { if (columnPicker.current) { columnPicker.current.formatItem.addHandler((s, e) => { handleEnableDragItem(e.item, isDragEnabled); }); } }, [isDragEnabled]); const initializedGrid = useEvent((flex) => { flexRef.current = flex; flex.formatItem.addHandler((s, e) => { if (e.panel == s.topLeftCells) { e.cell.innerHTML = '<span class="column-picker-icon glyphicon glyphicon-cog"></span>'; } }); // show the column picker when the user clicks the top-left cell let ref = flex.hostElement.querySelector(".wj-topleft"); ref.addEventListener("mousedown", (e) => { if (hasClass(e.target, "column-picker-icon")) { let host = columnPicker.current.hostElement; if (!host.offsetHeight) { showPopup(host, ref, false, true, false); columnPicker.current.focus(); } else { hidePopup(host, true, true); flex.focus(); } columnPicker.current.focus(); e.preventDefault(); } }); // work around Safari/IOS bug (TFS 321525, 361500, 402670) // https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile window.addEventListener('touchstart', (e) => { let host = columnPicker.current.hostElement; if (!contains(host, e.target) && !closest(e.target, '.wj-flexgrid')) { hidePopup(host, true, true); } }); }); const initializedPicker = useEvent((picker) => { const host = picker.hostElement; host.addEventListener('dragstart', handleDragStart); host.addEventListener('dragover', handleDragOver); host.addEventListener('drop', handleDrop); host.addEventListener('dragend', handleDragEnd); columnPicker.current = picker; columnPicker.current.itemsSource = flexRef.current.columns; columnPicker.current.checkedMemberPath = 'visible'; columnPicker.current.displayMemberPath = 'header'; columnPicker.current.lostFocus.addHandler(() => { hidePopup(columnPicker.current.hostElement); }); columnPicker.current.formatItem.addHandler((s, e) => { handleEnableDragItem(e.item, isDragEnabled); }); }); const hanndleSaveLayoutClick = () => { localStorage.setItem("myLayout", flexRef.current.columnLayout); }; const handleLoadLayoutClick = () => { let layout = localStorage.getItem("myLayout"); if (layout) { flexRef.current.columnLayout = layout; } }; const handleDragStart = (e) => { dragSrc.current = closest(e.target, '.wj-listbox-item'); if (dragSrc.current && e.dataTransfer) { e.dataTransfer.setData('text', dragSrc.current.innerHTML); e.dataTransfer.effectAllowed = 'move'; } }; const handleDragOver = (e) => { const dragOver = closest(e.target, '.wj-listbox-item'); if (dragDst.current && dragDst.current !== dragOver) { removeDropMarker(); } if (dragOver && dragOver !== dragSrc.current) { e.preventDefault(); if (dragSrc.current && e.dataTransfer) { e.dataTransfer.dropEffect = 'move'; dragDst.current = dragOver; const src = getElementIndex(dragSrc.current); const dst = getElementIndex(dragDst.current); removeDropMarker(); addDropMarker(dst > src); } } else { dragDst.current = null; } }; const handleDrop = (e) => { if (dragSrc.current && dragDst.current) { e.preventDefault(); const src = getElementIndex(dragSrc.current); const dst = getElementIndex(dragDst.current); flexRef.current.columns.moveElement(src, dst); } }; const handleDragEnd = () => { dragSrc.current = null; dragDst.current = null; removeDropMarker(); }; const handleEnableDrag = (e) => { const element = e.target; setIsDragEnabled(element.checked); }; const handleEnableDragItem = (item, enabled) => { item.setAttribute('draggable', enabled.toString()); }; const getElementIndex = (element) => { const parent = element.parentElement; const siblings = Array.prototype.slice.call(parent ? parent.children : []); return siblings.indexOf(element); }; const removeDropMarker = () => { removeChild(getElement('.drop-marker')); }; const addDropMarker = (isAfterPos) => { if (dragDst.current) { const itemsGap = 10; const width = 6; const margin = itemsGap / width; const height = dragDst.current.clientHeight; const topPos = dragDst.current.offsetTop; const leftPos = isAfterPos ? (dragDst.current.offsetLeft + dragDst.current.clientWidth + margin) : (dragDst.current.offsetLeft - itemsGap + margin); const css = `top:${topPos}px;left:${leftPos}px;height:${height}px;width:${width}px`; const html = `<div class="drop-marker" style="${css}">&nbsp</div>`; createElement(html, columnPicker.current.hostElement); } }; return (<div> <main className="container-fluid"> <FlexGrid initialized={initializedGrid} itemsSource={data}/> <div className="column-picker-div"> <ListBox className="column-picker" initialized={initializedPicker}/> </div> <div className="checkbox"> <label> <input onClick={handleEnableDrag} type="checkbox"/> Enable drag-and-drop </label> </div> <p> You can use the grid's <b> columnLayout </b> property to allow users to save and restore column layouts. Click the buttons below to see how this works: </p> <button className="btn btn-default" onClick={hanndleSaveLayoutClick}>Save Layout</button> <button className="btn btn-default" onClick={handleLoadLayoutClick}>Restore Layout</button> </main> </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 FlexGrid Column Picker</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-flexgrid { max-height: 300px; margin: 10px 0; } .column-picker-icon { cursor: pointer; color: #FF8754; margin: 3px; } .column-picker-div { display: none; } .wj-listbox.column-picker { display: grid; grid-template-columns: repeat(4, 1fr); grid-gap: 0 10px; columns: 4; /* IE fallback */ padding: 12px; margin-left: 12px; margin-top: 26px; box-shadow: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23); } .wj-listbox .wj-listbox-item>label { margin: 0 0 3px 0; } .wj-listbox .wj-listbox-item.wj-state-selected { background: transparent; color: inherit; } .wj-listbox .wj-listbox-item:hover { background: rgba(0, 0, 0, .05); } .wj-listbox .drop-marker { position: absolute; background: #0085c7; opacity: 0.5; pointer-events: none; z-index: 1000; }
function getData() { let data = [], countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], products = ['Widget', 'Sprocket', 'Gadget', 'Doohickey'], colors = ['Black', 'White', 'Red', 'Green', 'Blue'], dt = new Date(); for (let i = 0; i < 100; i++) { let date = new Date(dt.getFullYear(), i % 12, 25, i % 24, i % 60, i % 60), countryId = Math.floor(Math.random() * countries.length), productId = Math.floor(Math.random() * products.length), colorId = Math.floor(Math.random() * colors.length); let item = { id: i, start: date, end: date, country: countries[countryId], product: products[productId], color: colors[colorId], countryId: countryId, productId: productId, colorId: colorId, amount1: Math.random() * 10000 - 5000, amount2: Math.random() * 10000 - 5000, amount3: Math.random() * 10000 - 5000, amount4: Math.random() * 10000 - 5000, amount5: Math.random() * 10000 - 5000, discount: Math.random() / 4, active: i % 4 == 0 }; data.push(item); } return data; } export const data = getData();
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