Angular2: simple Drag and Drop

We are using drag and drop extensively for creating virtual users in OctoPerf.

As I plan to migrate to Angular2, today I wanted to check how to handle drag and drop in the future of AngularJS.

I started from the W3Schools plain HTML / JS example and created the following component:

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import { Component } from 'angular2/core';

@Component({
  selector: 'dnd',
  directives: [],
  styles: [`
  .container{
     border: 1px solid red;
     width: 336px;
     height: 69px;
  }
  `],
  template: `
<div id="div1" class="container" (drop)="drop($event)" (dragover)="allowDrop($event)">
<img id="drag1" src="https://www.w3schools.com/html/img_w3slogo.gif" draggable="true"
  (dragstart)="drag($event)" width="336" height="69">
</div>

<div id="div2" class="container" (drop)="drop($event)" (dragover)="allowDrop($event)"></div>
`
})
export class DnD {

  allowDrop(ev) {
    ev.preventDefault();
  }

  drag(ev) {
    ev.dataTransfer.setData("text", ev.target.id);
  }

  drop(ev) {
    ev.preventDefault();
    var data = ev.dataTransfer.getData("text");
    ev.target.appendChild(document.getElementById(data));
  }
}

It's simple as that. The only things that need to be changed are

• The drop methods: ondrop becomes (drop),
• The event parameter becomes $event.

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