comment-box-widget

components.cb-commentbox.js

import Ember from 'ember';

export default Ember.Component.extend({
  dataValue:'',
  keyDown: function(event){
		if(event.keyCode===50 ){
      this.set('listVisible', true);      
      event.preventDefault();
    }
  },
  areaValue:'',
  listVisible: false,
  actions:{
  	onListChange: function(value){
  		this.set('dataValue', value);
      // append it to exisiting areaVlaue
      let areaValue = document.getElementById("myTextarea").value;
      let newAreaValue = areaValue + ' ' + value;
      this.set('areaValue', newAreaValue);
      this.set('listVisible', false);
      document.getElementById("myTextarea").focus()
  	},
    
    addComment: function(){
      if(document.getElementById("myTextarea").value){
        this.addComment(document.getElementById("myTextarea").value);
      	document.getElementById("myTextarea").value = '';
      }
    },
  }
});

components.cb-datalist.js

import Ember from 'ember';

export default Ember.Component.extend({
  change: function(obj){
   this.listChange(obj.target.value);
  },
  didInsertElement(){
  	document.getElementById("list-input").focus()
  },
	actions:{}
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

controllers.index.js

import Ember from 'ember';

export default Ember.Controller.extend({
  commentList : [],
  datalist:[{
    	"value":"Africa",
      "label":"Africa"
    },{
    	"value":"Australia",
      "label":"Australia"
    },{
    	"value":"Europe",
      "label":"Europe"
    },{
    	"value":"Asia",
      "label":"Asia"
    },{
    	"value":"America",
      "label":"America"
    },{
    	"value":"Antarctica",
      "label":"Antarctica"
    }],
  actions:{
  	addComment: function(commentValue){
      let commentList = this.get('commentList');
      commentList.addObject({"name":commentValue});
    }
  }
  
});

routes.index.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function(){
  	
  }
});

styles.app.css

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

.comment {
	border: 1px solid gray;
  border-radius: 15px;
  padding: 10px;
}

label {
 font-size: 12px; 
}
button {
  margin-left: 10px;
}
.comments-section {
 	border: 1px solid gray; 
  margin-top: 10px;
}

templates.application.hbs

{{outlet}}
<br>
<br>

templates.components.cb-commentbox.hbs

{{yield}}
<form>
	<label for="myTextarea"> Enter Comment</label><br>
	<textarea id="myTextarea" rows="4" cols="50" value={{areaValue}}></textarea>
	<button type="submit" {{action "addComment"}}>Save</button>
	{{#if this.listVisible}}
		<CbDatalist @datalist={{this.datalist}} @listChange={{action "onListChange"}}/>
	{{/if}}
</form>

<section class="comments-section">
	<h6>Comments</h6>
	{{#each commentList as |comment index|}}
		<p class="comment">
			{{comment.name}}
		</p>
	{{/each}}
</section>

templates.components.cb-datalist.hbs

{{yield}}
	<label for="list-input">Continent</label><br>
	<input id="list-input" list="continents">
	<datalist id="continents" >
  	{{#each this.datalist as |item|}}
      <option class="option" value={{item.value}}>{{item.label}}</option>
    {{/each}}
	</datalist>

templates.index.hbs

<CbCommentbox 
	@datalist={{this.datalist}} 
  @commentList={{this.commentList}} 
  @addComment={{action "addComment"}} 
 />

tests.helpers.destroy-app.js

import { run } from '@ember/runloop';

export default function destroyApp(application) {
  run(application, 'destroy');
}

tests.helpers.start-app.js

import Ember from 'ember';
import Application from '../../app';
import config from '../../config/environment';

const { run } = Ember;
const assign = Ember.assign || Ember.merge;

export default function startApp(attrs) {
  let application;

  let attributes = assign({rootElement: "#test-root"}, config.APP);
  attributes.autoboot = true;
  attributes = assign(attributes, attrs); // use defaults, but you can override;

  run(() => {
    application = Application.create(attributes);
    application.setupForTesting();
    application.injectTestHelpers();
  });

  return application;
}

tests.test-helper.js

import Application from '../app';
import config from '../config/environment';
import { setApplication } from '@ember/test-helpers';
import { start } from 'ember-qunit';
import { assign } from '@ember/polyfills';

let attributes = assign({ rootElement: '#main' }, config.APP);
setApplication(Application.create(attributes));

start();

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}