Ember Concurrency Test

components.press-and-hold-button.js

import Ember from 'ember'

function sendPress() {
  this.sendAction('press');
}

function sendRelease() {
  this.sendAction('release');
}

export default Ember.Component.extend({
  tagName: 'button',

  touchStart: sendPress,
  mouseDown:  sendPress,
  touchEnd:   sendRelease,
  mouseLeave: sendRelease,
  mouseUp:    sendRelease,
});

controllers.application.js

import Ember from 'ember';
import { task, timeout } from 'ember-concurrency';

export default Ember.Controller.extend({
  count: 0,
  incrementBy: task(function * (inc) {
    let speed = 400;
    while (true) {
      this.incrementProperty('count', inc);
      yield timeout(speed);
      speed = Math.max(50, speed * 0.8);
    }
  })
});

templates.application.hbs

<p>Count: {{count}}</p>
<p>
  {{#press-and-hold-button
    press=(perform incrementBy -1)
    release=(cancel-all incrementBy)}}
      --Decrease
  {{/press-and-hold-button}}

  {{#press-and-hold-button
    press=(perform incrementBy 1)
    release=(cancel-all incrementBy)}}
      Increase++
  {{/press-and-hold-button}}
</p>

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.0",
    "ember-data": "2.6.1",
    "ember-template-compiler": "2.6.0",
    "babel-polyfill": "https://cdn.rawgit.com/nicksrandall/babel-polyfill/master/browser-polyfill.js"
  },
  "addons": {
    "ember-concurrency": "0.6.0"
  }
}