Wijmo 5 - Dragging rows from the grid

by Joel Parks

HTML

<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<script src="http://cdn.wijmo.com/5.20143.24/controls/wijmo.min.js"></script>
<link rel="stylesheet" href="http://cdn.wijmo.com/5.20143.24/styles/wijmo.min.css">
<script src="http://cdn.wijmo.com/5.20143.24/controls/wijmo.grid.min.js"></script>
<script src="http://cdn.wijmo.com/5.20143.24/controls/wijmo.chart.min.js"></script>
<script src="http://cdn.wijmo.com/5.20143.24/interop/angular/wijmo.angular.min.js"></script>
<!-- mark this as an Angular application and give it a controller -->
<div ng-app="app" ng-controller="appCtrl">
    
<h1>Dragging rows from the grid</h1>

    <p>Drag rows from the grid by the row header:</p>
    <wj-flex-grid
        items-source="data" 
        initialized="makeDraggable(s,e)">
    </wj-flex-grid>
		<wj-flex-grid
        items-source="data1" 
        initialized="makeDraggable(s,e)">
    </wj-flex-grid>

    <p>And drop them here:</p>
    <div id="dropTarget" style="height:100px;background-color:#e0e0e0">
        Drop rows here...
    </div>
</div>

JavaScript

// define app, include Wijmo 5 directives
var app = angular.module('app', ['wj']);

// controller
app.controller('appCtrl', function ($scope) {

    // make row headers draggable
    $scope.makeDraggable = function (s, e) {

        // make row headers draggable
        s.itemFormatter = function (panel, r, c, cell) {
            if (panel.cellType == wijmo.grid.CellType.RowHeader) {
                cell.textContent = (r + 1).toString();
                cell.draggable = true;
            }
        };

        // prevent grid from selecting when dragging rows
        s.hostElement.addEventListener('mousedown', function (e) {
            if (s.hitTest(e).cellType == wijmo.grid.CellType.RowHeader) {
                e.stopPropagation();
            };
        }, true);

        // drag start
        var dragRow = null;
        s.hostElement.addEventListener('dragstart', function (e) {
            dragRow = null;
            var ht = s.hitTest(e);
            if (ht.cellType == wijmo.grid.CellType.RowHeader) {
                dragRow = ht.row;
                e.dataTransfer.effectAllowed = 'copy';
                e.dataTransfer.setData('text', ''); // required in FireFox (note: text/html will throw in IE!)
            };
        });

        // perform drop operation
        var dropTarget = document.getElementById('dropTarget');
        dropTarget.addEventListener('dragover', function (e) {
            if (dragRow != null) {
                e.dataTransfer.dropEffect = 'copy';
                e.preventDefault();
            }
        });
        dropTarget.addEventListener('drop', function (e) {
            if (dragRow != null) {
                alert('thanks for dropping row ' + dragRow + ' here.');
            }
        });
    };


    // create some random data
    var countries = 'US,Germany,UK,Japan,Italy,Greece'.split(','),
        data = [], data1 = [];
    for (var i = 0; i < countries.length; i++) {
        data.push({
            country: countries[i],
    ...