Function-style HOC

components.bar-comp.js

import Ember from 'ember';
import Foo from './foo-comp';
import decorate from './decorate-hoc';

export default decorate(Foo);

components.baz-comp.js

import Ember from 'ember';
import Foo from './foo-comp';
import log from './log-hoc';

export default log('error')(Foo);

components.decorate-hoc.js

import Ember from 'ember';

const decorateHoc = Component => {
  return Component.extend({
  	actions: {
      handleButtonClick(text) {
        this._super(`Decorated: ${text}`);
      }
    }
  });
};

export default decorateHoc;

components.foo-comp.js

import Ember from 'ember';

export default Ember.Component.extend({
  classNames: ['foo'],
  
  // This is important. Without this Ember won't pick up the right template
  layoutName: 'components/foo-comp',
  
  text: 'foo',
  
  onSomethingClick: Ember.K,
  
  actions: {
    handleButtonClick(text) {
      this.get('onSomethingClick')(`Clicked button in ${text}`);
    },
    
    handleTextClick(text) {
      this.get('onSomethingClick')(`Clicked text in ${text}`);
    }
  }
});

components.log-hoc.js

import Ember from 'ember';

const logHoc = logLevel => Component => Component.extend({
  actions: {
  	handleButtonClick(text) {
      console[logLevel](`Passed in ${text}`);
      this._super(...arguments);
    }
  }
});

export default logHoc;

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  echoText: 'Click on the texts or the buttons to start',
  
  actions: {
    echo(text) {
      this.set('echoText', text);
    }
  }
});

styles.app.css

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

.foo {
  border: 1px solid lightgray;
  padding: 10px;
  margin-top: 10px;
}

templates.application.hbs

<div>Echo text: {{echoText}}</div>

{{foo-comp text='foo' onSomethingClick=(action 'echo')}}

{{bar-comp text='bar' onSomethingClick=(action 'echo')}}

{{baz-comp text='baz' onSomethingClick=(action 'echo')}}

templates.components.foo-comp.hbs

<div>
  <div {{action 'handleTextClick' text}}>Text: {{text}}</div>
  <div>
  	<button type="button" {{action 'handleButtonClick' text}}>{{text}}</button>
  </div>
</div>

twiddle.json

{
  "version": "0.11.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.11.0",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.11.0",
    "ember-testing": "2.11.0"
  },
  "addons": {}
}