Complex Prop Bindings

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  attributeBindings: ['style'],
  style: Ember.computed('width', 'height', 'color', function() {
    let width = this.get('width');
    let height = this.get('height');
    let color = this.get('color');
    return 'width:'+width+'px;height:'+height+'px;background-color:'+color;
  }),
  color: 'red',
  height: 20,
  width: Ember.computed('height', {
    get() {
      return this.get('height')*2;
    },
    set(keyName, width) {
      this.set('height', width/2);
      return width;
    }
  })
});

components.my-subcomponent.js

import MyComponent from './my-component';

export default MyComponent.extend({
  color: 'yellow',
  init() {
    this._super(...arguments);
    this.height = 150;
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  height: 60,
  width: 80
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<h2>More complex component prop bindings</h2>
<h3>Dynamic bound CP</h3>
{{input type="range" min=20 max=100 value=height}}
{{#my-component height=height color="#ccc"}}
hello
{{/my-component}}
<h3>Defaults from prototype</h3>
{{my-component}}
<h3>2-way bound CP setter</h3>
{{input type="range" min=20 max=100 value=width}}
{{my-component width=width color="blue"}}
<h3>Overriden prop + plus initialized in create</h3>
{{my-subcomponent}}
{{my-subcomponent color="green"}}
{{outlet}}
<br>
<br>

templates.components.my-component.hbs

{{yield}}

templates.components.my-subcomponent.hbs

{{yield}}

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": "1.12.2",
    "ember-data": "1.13.15",
    "ember-template-compiler": "1.12.2"
  }
}