import Ember from 'ember';

/**

 * Mixin to detect outside click for a component.

 * taken from http://stackoverflow.com/a/32115231

 */

export default Ember.Mixin.create({

  onOutsideClick: Ember.K,

  onOutsideClickEnabled: true,

  handleOutsideClick: function(event) {

    var element = this.$();

    var target = Ember.$(event.target);

    if(element && target) {

      if (!(element.has(target).length || element.is(target))) {

        this.onOutsideClick();

      }

    }

  },

  _registerOutsideClickListener() {

    let clickHandler = this.get('handleOutsideClick').bind(this);

    return Ember.$(document).on('click', clickHandler);

  },

  _unregisterOutsideClickListener() {

    let clickHandler = this.get('handleOutsideClick').bind(this);

    return Ember.$(document).off('click', clickHandler);

  },

  _onOutsideClickEnabledChanged: Ember.observer('onOutsideClickEnabled', function() {

    if(this.get('onOutsideClickEnabled')) {

      this._registerOutsideClickListener();

    }

    else {

      this._unregisterOutsideClickListener();

    }

  }),

  setupOutsideClickListener: Ember.on('didInsertElement', function() {

    this._super(...arguments);

    if(this.get('onOutsideClickEnabled')) {

      return this._registerOutsideClickListener();

    }

    else {

      return Ember.$(document);

    }

  }),

  removeOutsideClickListener: Ember.on('willDestroyElement', function() {

    return this._unregisterOutsideClickListener();

  })

});