Ember Drop Zone

components.drop-zone.js

import Ember from 'ember';

const {
  get,
  set,
  Component
} = Ember;

export default Component.extend({

  // passed in
  classes : '',

  // local
  classNames        : [ 'drop-zone' ],
  classNameBindings : [ 'classes', 'dragClass' ],
  dragClass         : 'drop-zone-leave',
  dropAction        : '',

  dragLeave(e) {
    e.preventDefault();
    set(this, 'dragClass', 'drop-zone-leave');
  },

  dragOver(e) {
    e.preventDefault();
    set(this, 'dragClass', 'drop-zone-over');
  },

  drop(e) {
    e.preventDefault();
    get(this, 'dropAction')(e);
    set(this, 'dragClass', 'drop-zone-leave');
  }
});

controllers.application.js

import Ember from 'ember';

const {
  set,
  Controller
} = Ember;

export default Controller.extend({
  
  fileName: '',
  
  actions: {
   
    onDrop({ dataTransfer }) {
    	set(this, 'fileName', dataTransfer.files[0].name); 
   	}
  }
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.drop-zone {
 border: 2px solid #e3e3e3;
  padding: 10px;
  text-align: center;
}

.drop-zone.drop-zone-over {
 	border-style: dashed; 
}

templates.application.hbs

<h1>Ember DropZone example</h1>
{{#drop-zone dropAction=(action "onDrop")}}
	<h3>{{fileName}}</h3>
	<em>Drop something here</em>
{{/drop-zone}}

templates.components.drop-zone.hbs

{{yield}}

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}