onTranslateFromEnd() {
    if (this.focusOnOpen) {
      let focusableElements = this.element.querySelectorAll('[autofocus]');
      let toFocus = focusableElements[focusableElements.length - 1];
      if (!toFocus) {
        let focusableButtons = this.element.querySelectorAll('md-dialog-actions button');
        toFocus = focusableButtons[focusableButtons.length - 1];
      }
      if (toFocus) {
        toFocus.focus();
      }
    }
  }
@class PaperDialogInner
@extends Ember.Component
@uses Translate3dMixin