Ember, mixin to detect click outside of view/component

I'm writing a Mixin to handle when user clicks outside of a view/component.

This is the mixin:

App.ClickElsewhereMixin = Ember.Mixin.create({

  onClickElsewhere: Ember.K,

  didRender: function() {
    this._super.apply(this, arguments);
    return $(document).on('click', this.get('onClickElsewhere'));
  },

  willDestroyElement: function() {
    this._super.apply(this, arguments);
    $(document).off('click', this.get('onClickElsewhere'));
  },
});

I use it in my component:

onClickElsewhere: function() {
    this.send('exitEditMode');
},

But when I run it, I get:

TypeError: this.send is not a function

How can I keep the this context?