ember-document-bind.js

import Ember from 'ember';

var get = Ember.get;

export  default Ember.Component.extend({
  didInsertElement: function(){
    Ember.$(document).bind('click', this.closeThis);
  },

  closeThis: function(event) {
    //... do somthing
  },

  willDestroyElement: function() {
    Ember.$(document).unbind('click', this.closeThis);
  }
});

ember-document-bind2.js

import Ember from 'ember';

var get = Ember.get;

export  default Ember.Component.extend({
  didInsertElement: function(){
    Ember.$(document).bind('click', {_this: this}, this.closeThis);
  },

  closeThis: function(event) {
    var _this = event.data._this;
    //... do somthing
  },

  willDestroyElement: function() {
    Ember.$(document).unbind('click', this.closeThis);
  }
});

ember-document-bind3.js

var get = Ember.get;

export  default Ember.Component.extend({
  init: function(){
    this.closeWithThis = this.closeThis.bind(this);
  },

  didInsertElement: function(){
    Ember.$(document).bind('click', this.closeWithThis);
  },

  closeThis: function(event) {
    var _this = event.data._this;
    //... do somthing
  },

  willDestroyElement: function() {
    Ember.$(document).unbind('click', this.closeWithThis);
  }
});