グリッド:詳細行

通常のグリッドよりも多くの情報を含むデータオブジェクトが、行に連結されることがあります。

これらのシナリオでは、wijmo.grid.detailモジュールに含まれているFlexGridDetailProviderクラスを使用することができます。FlexGridDetailProviderは、ユーザーが展開して残りのデータを表示できる各行の詳細セクションを作成します。

他のグリッドを含め、詳細行には何でも追加できます。以下のサンプルは、データを別のグリッドに表示する方法と、標準のHTML要素内に表示する方法の両方を示しています。

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import * as wjCore from '@grapecity/wijmo'; import * as wjOdata from '@grapecity/wijmo.odata'; import * as wjGrid from '@grapecity/wijmo.grid'; import * as wjGridDetail from '@grapecity/wijmo.grid.detail'; import * as wjInput from '@grapecity/wijmo.input'; // // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // get OData categories and products const url = 'https://services.odata.org/Northwind/Northwind.svc'; const categories = new wjOdata.ODataCollectionView(url, 'Categories', { fields: ['CategoryID', 'CategoryName', 'Description'] }); const products = new wjOdata.ODataCollectionView(url, 'Products'); // // shared column definitions const categoryColumns = [ { binding: 'CategoryName', header: '分類名', width: '*' }, { binding: 'Description', header: '説明', width: '2*' } ]; // // get products for a given category const _catToProductMap = new Map(); function getProducts(categoryID) { let categoryProducts = _catToProductMap.get(categoryID); if (!categoryProducts) { categoryProducts = products.items.filter(product => (product.CategoryID === categoryID)); _catToProductMap.set(categoryID, categoryProducts); } return categoryProducts; } // // // grid with HTML detail const htmlDetail = new wjGrid.FlexGrid('#htmlDetail', { autoGenerateColumns: false, columns: categoryColumns, itemsSource: categories, isReadOnly: true, }); // // html detail provider const dpHtml = new wjGridDetail.FlexGridDetailProvider(htmlDetail, { // use animation when showing details isAnimated: true, // // create detail cells for a given row createDetailCell: function (row) { // build detail content for the current category const cat = row.dataItem; const prods = getProducts(cat.CategoryID); let html = `ID: <b>${cat.CategoryID}</b><br />`; html += `分類名: <b>${cat.CategoryName}</b><br />`; html += `説明: <b>${cat.Description}</b><br />`; html += `商品: <b>合計${prods.length}個</b><br />`; html += '<ol>'; prods.forEach(product => { html += `<li>${product.ProductName}</li>`; }); html += '</ol>'; // // create and return detail cell const cell = document.createElement('div'); cell.innerHTML = html; return cell; }, }); // // // grid with grid detail const gridDetail = new wjGrid.FlexGrid('#gridDetail', { autoGenerateColumns: false, columns: categoryColumns, itemsSource: categories, isReadOnly: true, }); // // grid detail provider const initialOptions = { // specifies when and how the row details are displayed detailVisibilityMode: wjGridDetail.DetailVisibilityMode.ExpandSingle, // // maximum height of the detail rows, in pixels maxHeight: null, // // whether to use animation when showing row details isAnimated: true, // // action to perform when the ENTER key is pressed keyActionEnter: wjGridDetail.KeyAction.None, // // callback function that determines whether a row has details rowHasDetail: null, // // function that creates detail cells createDetailCell: function (row) { const cell = document.createElement('div'); new wjGrid.FlexGrid(cell, { headersVisibility: wjGrid.HeadersVisibility.Column, isReadOnly: true, autoGenerateColumns: false, itemsSource: getProducts(row.dataItem.CategoryID), columns: [ { header: 'ID', binding: 'ProductID' }, { header: '商品名', binding: 'ProductName' }, { header: '梱包単位', binding: 'QuantityPerUnit' }, { header: '単価', binding: 'UnitPrice' }, { header: '生産中止', binding: 'Discontinued' }, ], }); return cell; }, }; const dpGrid = new wjGridDetail.FlexGridDetailProvider(gridDetail, initialOptions); // // create detailVisibilityMode selector const detailVisibilityModeMenu = new wjInput.Menu('#detailVisibilityMode', { selectedIndexChanged: (s, e) => { if (s.selectedIndex > -1) { formatMenuHeader(s); dpGrid.detailVisibilityMode = s.selectedValue; } }, header: '詳細行の表示方法', displayMemberPath: 'header', selectedValuePath: 'value', itemsSource: [ { header: 'コード', value: wjGridDetail.DetailVisibilityMode.Code }, { header: '行を選択', value: wjGridDetail.DetailVisibilityMode.Selection }, { header: 'ボタン(1行だけ展開)', value: wjGridDetail.DetailVisibilityMode.ExpandSingle }, { header: 'ボタン(複数行を展開)', value: wjGridDetail.DetailVisibilityMode.ExpandMulti }, ], }); detailVisibilityModeMenu.selectedValue = initialOptions.detailVisibilityMode; // // create maxHeight selector const maxHeightMenu = new wjInput.Menu('#maxHeight', { selectedIndexChanged: (s, e) => { if (s.selectedIndex > -1) { formatMenuHeader(s); dpGrid.maxHeight = s.selectedValue; } }, header: '最大の高さ', displayMemberPath: 'header', selectedValuePath: 'value', itemsSource: [ { header: 'なし', value: null }, { header: '100', value: 100 }, { header: '200', value: 200 }, { header: '300', value: 300 }, { header: '400', value: 400 }, { header: '500', value: 500 }, ], }); maxHeightMenu.selectedValue = initialOptions.maxHeight; // // create isAnimated selector const isAnimatedMenu = new wjInput.Menu('#isAnimated', { selectedIndexChanged: (s, e) => { if (s.selectedIndex > -1) { formatMenuHeader(s); dpGrid.isAnimated = s.selectedValue; } }, header: 'アニメーション', displayMemberPath: 'header', selectedValuePath: 'value', itemsSource: [ { header: 'なし', value: false }, { header: 'あり', value: true }, ], }); isAnimatedMenu.selectedValue = initialOptions.isAnimated; // // create keyActionEnter selector const keyActionEnterMenu = new wjInput.Menu('#keyActionEnter', { selectedIndexChanged: (s, e) => { if (s.selectedIndex > -1) { formatMenuHeader(s); dpGrid.keyActionEnter = s.selectedValue; } }, header: 'Enterキーの操作', displayMemberPath: 'header', selectedValuePath: 'value', itemsSource: [ { header: 'なし', value: wjGridDetail.KeyAction.None }, { header: '詳細行の表示を切り替え', value: wjGridDetail.KeyAction.ToggleDetail }, ], }); keyActionEnterMenu.selectedValue = initialOptions.keyActionEnter; // // create rowDetails selector const rowDetailsMenu = new wjInput.Menu('#rowDetails', { selectedIndexChanged: (s, e) => { if (s.selectedIndex > -1) { formatMenuHeader(s); dpGrid.rowHasDetail = s.selectedValue ? null : (row => !(row.dataItem.CategoryID % 2)); } }, header: '詳細行の位置', displayMemberPath: 'header', selectedValuePath: 'value', itemsSource: [ { header: '全ての行', value: true }, { header: '偶数行のみ', value: false }, ], }); rowDetailsMenu.selectedValue = initialOptions.rowHasDetail; // // function formatMenuHeader(menu) { let index = menu.header.indexOf(':'); if (index !== -1) { menu.header = menu.header.substring(0, menu.header.indexOf(':')) + wjCore.format(': <b>{header}</b>', menu.selectedItem); } else { menu.header = menu.header + wjCore.format(': <b>{header}</b>', menu.selectedItem); } } }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Row Details</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"> <h3>HTML要素を表示</h3> <p> このグリッドは、各行の商品カテゴリを示します。行を展開すると、そのカテゴリの商品に関する情報が表示されます。 </p> <div id="htmlDetail"></div> <h3>グリッドを表示</h3> <p> 他のグリッドを含め、詳細行に任意のものを追加できます。この例は同じカテゴリを示していますが、詳細行は別のグリッドを使って商品を表示します。 </p> <div id="gridDetail"></div> <div class="grid-options"> <div id="detailVisibilityMode"></div> <div id="maxHeight"></div> <div id="isAnimated"></div> <div id="keyActionEnter"></div> <div id="rowDetails"></div> </div> </div> </body> </html>
.wj-flexgrid { max-height: 350px; } body { margin-bottom: 20pt; } .grid-options .wj-menu { margin: 0.25em 0.5em 0.25em 0; }
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