Ember Bootstrap Tooltip

components.grid-value.js

import Ember from 'ember';
import { computed } from '@ember/object';

export default Ember.Component.extend({
  classNames: 'grid-value',
  attributeBindings: ['style'],
  value: 0,
  style: computed('value', function() {
    let value = this.get('value');
    return Ember.String.htmlSafe(`background-color: rgb(${value}, 0, 0)`);
  }),
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  init() {
    this._super(...arguments);
    this.data = this.getRandomData();
  },
 
  rows: 9,

  columns: 9,
 
  getRandomData() {
    let rows = parseInt(this.get('rows'));
    let columns = parseInt(this.get('columns'));
    return [...Array(rows)].map(() => {
      return [...Array(columns)].map(() => {
        return ~~(Math.random() * 256);
      });
    });
  },
  
  actions: {
    update() {
      this.set('data', this.getRandomData());
    }
  }
});

styles.app.css

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

table {
  margin-top: 20px;
}

td {
  width: 50px;
  height: 50px;
}

.grid-value {  
  width: 48px;
  height: 48px;
  color: #ccc;
  padding-top: 12px;
  text-align: center;
}

templates.application.hbs

<div id="ember-bootstrap-wormhole"></div>

<form class="form-inline" {{action "update" on="submit"}}>
  <div class="form-group">
    <label>Rows</label>
    {{input type="number" class="form-control" min="1" value=rows}}
  </div>
  <div class="form-group">
    <label>Columns</label>
    {{input type="number" class="form-control" min="1" value=columns}}
  </div>
  <button type="submit" class="btn btn-default">Update</button>
</form>

<table>
	<tbody>
    {{#each data as |row rowIdx|}}
      <tr>
        {{#each row as |col colIdx|}}
          <td>
          	{{#grid-value value=col}}{{rowIdx}},{{colIdx}}{{/grid-value}}
            {{bs-tooltip title=col placement="right"}}
          </td>
        {{/each}}
      </tr>
    {{/each}}
  </tbody>
</table>

templates.components.grid-value.hbs

{{yield}}

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": "2.18.2",
    "ember-template-compiler": "2.18.2",
    "ember-testing": "2.18.2"
  },
  "addons": {
    "ember-data": "2.18.5",
    "ember-bootstrap": "3.1.0"
  }
}