block.js

'use strict';
polarity.export = PolarityComponent.extend({
  details: Ember.computed.alias('block.data.details'),
  uniqueIdPrefix: '',
  init() {
    let array = new Uint32Array(5);
    this.set('uniqueIdPrefix', window.crypto.getRandomValues(array).join(''));

    this._super(...arguments);
  },
  actions: {
    copyData: function () {
      Ember.run.scheduleOnce(
        'afterRender',
        this,
        this.copyElementToClipboard,
        `email-container-${this.get('uniqueIdPrefix')}`
      );

      Ember.run.scheduleOnce('destroy', this, this.restoreCopyState);
    }
  },
  copyElementToClipboard(element) {
    window.getSelection().removeAllRanges();
    let range = document.createRange();

    range.selectNode(typeof element === 'string' ? document.getElementById(element) : element);
    window.getSelection().addRange(range);
    document.execCommand('copy');
    window.getSelection().removeAllRanges();
  },
  restoreCopyState() {
    this.set('showCopyMessage', true);

    setTimeout(() => {
      if (!this.isDestroyed) {
        this.set('showCopyMessage', false);
      }
    }, 2000);
  }
});