Demos
Grid(Vue)
Rows
Reordering

Reordering (Vue)

The allowDragging property can be used to enable row and/or column dragging within FlexGrid controls. By default, it is set to allow dragging columns but not rows.

This setting works well for bound data. When the grid is bound to a data source, columns have bindings that move along with the columns and to not affect the data source. Rows, on the other hand, have references to the data objects they represent; if they move, they become out of sync with the data source.

Furthermore, data sources are often sorted, and in this case the row order is determined by the sorting algorithm, which is not compatible with explicit positions set by dragging the rows.

This sample shows how you can implement row dragging in bound grids. This requires two steps:

  • Set the grid's allowSorting property to false to prevent users from sorting the data.

  • Handle the grid's draggedRow event to change the order of the items in the data source to match the new row order.

Try dragging rows into new positions by dragging them by the row header.

Note: To enable drag/drop operations on touch devices, your project should import the '@mescius/wijmo.touch' module.

Learn about FlexGrid | FlexGrid API Reference

This example uses Vue.

JavaScript
Angular
Vue
React
app.vue
index.html
data.js
Copy to CodeMine
<template>
    <div class="container-fluid">
        <wj-flex-grid :itemsSource="data" :selectionMode="'ListBox'" :alternatingRowStep="0" :allowSorting="false"
            :allowDragging="'Both'" :initialized="handleInitialized" :draggingRow="handleDraggingRow"
            :draggedRow="handleDraggedRow">
        </wj-flex-grid>
        <button @click="showCurrentItem" class="btn btn-default">
            Show current item
        </button>
    </div>
</template>

<script setup>
import "@mescius/wijmo.touch";
import { getData } from "./data";
import { ref } from "vue";

const data = ref(getData(50));
const grid = ref(null);
const dragIndex = ref(null);

function handleInitialized(gridref) {
    grid.value = gridref;
}

function handleDraggingRow(s, e) {
    dragIndex.value = e.row;
    s.collectionView.moveCurrentToPosition(dragIndex.value);
}

function handleDraggedRow(s, e) {
    let dropIndex = e.row,
        arr = s.collectionView.sourceCollection;
    s.collectionView.deferUpdate(() => {
        let item = arr[dragIndex.value];
        arr.splice(dragIndex.value, 1);
        arr.splice(dropIndex, 0, item);
        s.collectionView.moveCurrentToPosition(dropIndex);
    });
}

function showCurrentItem() {
    let currItem = JSON.stringify(grid.value.collectionView.currentItem);
    alert("The currentItem is: " + currItem);
}
</script>

<style>
.wj-flexgrid {
    max-height: 400px;
    margin: 10px 0;
}

.wj-flexgrid .wj-cell {
    padding: 8px;
}
</style>
<template> <div class="container-fluid"> <wj-flex-grid :itemsSource="data" :selectionMode="'ListBox'" :alternatingRowStep="0" :allowSorting="false" :allowDragging="'Both'" :initialized="handleInitialized" :draggingRow="handleDraggingRow" :draggedRow="handleDraggedRow"> </wj-flex-grid> <button @click="showCurrentItem" class="btn btn-default"> Show current item </button> </div> </template> <script setup> import "@mescius/wijmo.touch"; import { getData } from "./data"; import { ref } from "vue"; const data = ref(getData(50)); const grid = ref(null); const dragIndex = ref(null); function handleInitialized(gridref) { grid.value = gridref; } function handleDraggingRow(s, e) { dragIndex.value = e.row; s.collectionView.moveCurrentToPosition(dragIndex.value); } function handleDraggedRow(s, e) { let dropIndex = e.row, arr = s.collectionView.sourceCollection; s.collectionView.deferUpdate(() => { let item = arr[dragIndex.value]; arr.splice(dragIndex.value, 1); arr.splice(dropIndex, 0, item); s.collectionView.moveCurrentToPosition(dropIndex); }); } function showCurrentItem() { let currItem = JSON.stringify(grid.value.collectionView.currentItem); alert("The currentItem is: " + currItem); } </script> <style> .wj-flexgrid { max-height: 400px; margin: 10px 0; } .wj-flexgrid .wj-cell { padding: 8px; } </style>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid Reordering Rows</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="compiler.js" type="module"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.js'); </script> </head> <body> <div id="app"> </div> </body> </html>
// generate some random data export function getData(cnt) { let countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','), data = []; for (let i = 0; i < cnt; i++) { data.push({ id: i, country: countries[i % countries.length], active: i % 5 != 0, downloads: Math.round(Math.random() * 200000), sales: Math.round(Math.random() * 100000 * 100) / 100, expenses: Math.round(Math.random() * 50000 * 100) / 100 }); } return data; }
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