Computed draw call

computed-draw-call.js

import Ember from 'ember';

export default Ember.Component.extend({
  didInsertElement: function () {
    this._draw();
  },

  dataset: function () {
    // Calulate dataset
    return dataset;
  }.property('arrayProperty.@each', 'anotherProperty'),

  needsRedraw: function () {
    this._draw();
  }.observes('dataset'), // Have tried dataset.@each

  _draw: function () {
    var dataset = this.get('dataset');
    // Draw stuff with dataset
  },
});