拖动目标组件

列的 allowDragging 属性提供对拖动源的控制(哪些列可能被拖入新位置).

如果当前的源/目标组合无效,您可以通过处理 dratingColumnOver 事件并将事件的 cancel 参数设置为true来控制放置目标(列的新位置).

例如,下面的表格不允许将“国家”列拖到最后或第一个位置:

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjGrid from '@grapecity/wijmo.grid'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // // generate some random data var countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (var i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } // // create the grid var theGrid = new wjGrid.FlexGrid('#theGrid', { itemsSource: data, // // prevent 'country' column from being dragged to index 0 draggingColumn: function (s, e) { theColumn = s.columns[e.col].binding; }, draggingColumnOver: function (s, e) { if (theColumn == 'country') { if (e.col == 0 || e.col == s.columns.length - 1) { e.cancel = true; } } } }); var theColumn = null; } <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Reordering Events</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"> <p> For example, the grid below does not allow dragging the 'country' column to the last or first positions:</p> <div id="theGrid"></div> </div> </body> </html> .wj-flexgrid { height: 250px; margin: 10px 0; } import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import { Component, enableProdMode, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import * as wjcGrid from '@grapecity/wijmo.grid'; import { WjGridModule } from '@grapecity/wijmo.angular2.grid'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: any[]; private _theColumn: string; constructor() { this.data = this._getData(); } flexInitialized(flexgrid: wjcGrid.FlexGrid) { // prevent 'country' column from being dragged to index 0 flexgrid.draggingColumn.addHandler((s: wjcGrid.FlexGrid, e: wjcGrid.CellRangeEventArgs) => { this._theColumn = s.columns[e.col].binding; }); flexgrid.draggingColumnOver.addHandler((s: wjcGrid.FlexGrid, e: wjcGrid.CellRangeEventArgs) => { if (this._theColumn == 'country') { if (e.col == 0 || e.col == s.columns.length - 1) { e.cancel = true; } } }); } private _getData() { // generate some random data let countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (let i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; } } // @NgModule({ imports: [WjGridModule, BrowserModule], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Reordering Events</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html> <div class="container-fluid"> <p> For example, the grid below does not allow dragging the 'country' column to the last or first positions:</p> <!-- the grid --> <wj-flex-grid #flex [(itemsSource)]="data" (initialized)="flexInitialized(flex)"> </wj-flex-grid> </div> .wj-flexgrid { height: 250px; margin: 10px 0; } <template> <div class="container-fluid"> <p> For example, the grid below does not allow dragging the 'country' column to the last or first positions: </p> <!-- the grid --> <wj-flex-grid :itemsSource="data" :initialized="flexInitialized"></wj-flex-grid> </div> </template> <script> import "@grapecity/wijmo.styles/wijmo.css"; import 'bootstrap.css'; import Vue from 'vue'; import '@grapecity/wijmo.vue2.core'; import '@grapecity/wijmo.vue2.grid'; import { getData } from "./data"; let App = Vue.extend({ name: "app", data: function() { return { data: getData(), _theColumn: '' }; }, methods: { flexInitialized: function(flexgrid) { // prevent 'country' column from being dragged to index 0 flexgrid.draggingColumn.addHandler((s, e) => { this._theColumn = s.columns[e.col].binding; }); flexgrid.draggingColumnOver.addHandler((s, e) => { if (this._theColumn == "country") { if (e.col == 0 || e.col == s.columns.length - 1) { e.cancel = true; } } }); } } }); new Vue({ render: h => h(App) }).$mount("#app"); </script> <style> .wj-flexgrid { max-height: 200px; margin-bottom: 12px; } body { margin-bottom: 24px; } </style> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>AutoComplete</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/jszip/dist/jszip.js"></script> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.vue'); </script> </head> <body> <div id="app"> </div> </body> </html> export function getData() { // generate some random data let countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (let i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; } import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './app.css'; // import * as React from 'react'; import * as ReactDOM from 'react-dom'; import * as wjGrid from '@grapecity/wijmo.react.grid'; import { getData } from "./data"; class App extends React.Component { constructor(props) { super(props); this.state = { data: getData() }; } render() { return <div className="container-fluid"> <p> For example, the grid below does not allow dragging the 'country' column to the last or first positions: </p> <wjGrid.FlexGrid initialized={this.flexInitialized.bind(this)} itemsSource={this.state.data}> </wjGrid.FlexGrid> </div>; } flexInitialized(flexgrid) { // prevent 'country' column from being dragged to index 0 flexgrid.draggingColumn.addHandler((s, e) => { this._theColumn = s.columns[e.col].binding; }); flexgrid.draggingColumnOver.addHandler((s, e) => { if (this._theColumn == "country") { if (e.col == 0 || e.col == s.columns.length - 1) { e.cancel = true; } } }); } } ReactDOM.render(<App />, document.getElementById('app')); <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid Reordering Events</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 { max-height: 200px; margin-bottom: 12px; } body { margin-bottom: 24px; } export function getData() { // generate some random data let countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (let i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; }