/* ========================================================================
 * Bootstrap: modal.js v3.3.0
 * http://getbootstrap.com/javascript/#modals
 * ========================================================================
 * Copyright 2011-2014 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */


+function($) {
  'use strict';

  // MODAL CLASS DEFINITION
  // ======================

  let Modal = function(element, options) {
    this.options = options;
    this.$body = $(document.body);
    this.$element = $(element);
    this.$backdrop =
    this.isShown = null;
    this.scrollbarWidth = 0;

    if (this.options.remote) {
      this.$element
        .find('.modal-content')
        .load(this.options.remote, $.proxy(function() {
          this.$element.trigger('loaded.bs.modal');
        }, this));
    }
  };

  Modal.VERSION = '3.3.0';

  Modal.TRANSITION_DURATION = 300;
  Modal.BACKDROP_TRANSITION_DURATION = 150;

  Modal.DEFAULTS = {
    backdrop: true,
    keyboard: true,
    show: true,
  };

  Modal.prototype.toggle = function(_relatedTarget) {
    return this.isShown ? this.hide() : this.show(_relatedTarget);
  };

  Modal.prototype.show = function(_relatedTarget) {
    let that = this;
    let e = $.Event('show.bs.modal', {relatedTarget: _relatedTarget});

    this.$element.trigger(e);

    if (this.isShown || e.isDefaultPrevented()) return;

    this.isShown = true;

    this.checkScrollbar();
    this.$body.addClass('modal-open');

    this.setScrollbar();
    this.escape();

    this.$element.on('click.dismiss.bs.modal', '[data-dismiss="modal"]', $.proxy(this.hide, this));

    this.backdrop(function() {
      let transition = $.support.transition && that.$element.hasClass('fade');

      if (!that.$element.parent().length) {
        that.$element.appendTo(that.$body); // don't move modals dom position
      }

      that.$element
        .show()
        .scrollTop(0);

      if (transition) {
        that.$element[0].offsetWidth; // force reflow
      }

      that.$element
        .addClass('in')
        .attr('aria-hidden', false);

      that.enforceFocus();

      let e = $.Event('shown.bs.modal', {relatedTarget: _relatedTarget});

      transition ?
        that.$element.find('.modal-dialog') // wait for modal to slide in
          .one('bsTransitionEnd', function() {
            that.$element.trigger('focus').trigger(e);
          })
          .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
        that.$element.trigger('focus').trigger(e);
    });
  };

  Modal.prototype.hide = function(e) {
    if (e) e.preventDefault();

    e = $.Event('hide.bs.modal');

    this.$element.trigger(e);

    if (!this.isShown || e.isDefaultPrevented()) return;

    this.isShown = false;

    this.escape();

    $(document).off('focusin.bs.modal');

    this.$element
      .removeClass('in')
      .attr('aria-hidden', true)
      .off('click.dismiss.bs.modal');

    $.support.transition && this.$element.hasClass('fade') ?
      this.$element
        .one('bsTransitionEnd', $.proxy(this.hideModal, this))
        .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
      this.hideModal();
  };

  Modal.prototype.enforceFocus = function() {
    $(document)
      .off('focusin.bs.modal') // guard against infinite focus loop
      .on('focusin.bs.modal', $.proxy(function(e) {
        if (this.$element[0] !== e.target && !this.$element.has(e.target).length) {
          this.$element.trigger('focus');
        }
      }, this));
  };

  Modal.prototype.escape = function() {
    if (this.isShown && this.options.keyboard) {
      this.$element.on('keydown.dismiss.bs.modal', $.proxy(function(e) {
        e.which == 27 && this.hide();
      }, this));
    } else if (!this.isShown) {
      this.$element.off('keydown.dismiss.bs.modal');
    }
  };

  Modal.prototype.hideModal = function() {
    let that = this;
    this.$element.hide();
    this.backdrop(function() {
      that.$body.removeClass('modal-open');
      that.resetScrollbar();
      that.$element.trigger('hidden.bs.modal');
    });
  };

  Modal.prototype.removeBackdrop = function() {
    this.$backdrop && this.$backdrop.remove();
    this.$backdrop = null;
  };

  Modal.prototype.backdrop = function(callback) {
    let that = this;
    let animate = this.$element.hasClass('fade') ? 'fade' : '';

    if (this.isShown && this.options.backdrop) {
      let doAnimate = $.support.transition && animate;

      this.$backdrop = $('<div class="modal-backdrop ' + animate + '" />')
        .prependTo(this.$element)
        .on('click.dismiss.bs.modal', $.proxy(function(e) {
          if (e.target !== e.currentTarget) return;
          this.options.backdrop == 'static'
            ? this.$element[0].focus.call(this.$element[0])
            : this.hide.call(this);
        }, this));

      if (doAnimate) this.$backdrop[0].offsetWidth; // force reflow

      this.$backdrop.addClass('in');

      if (!callback) return;

      doAnimate ?
        this.$backdrop
          .one('bsTransitionEnd', callback)
          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
        callback();
    } else if (!this.isShown && this.$backdrop) {
      this.$backdrop.removeClass('in');

      let callbackRemove = function() {
        that.removeBackdrop();
        callback && callback();
      };
      $.support.transition && this.$element.hasClass('fade') ?
        this.$backdrop
          .one('bsTransitionEnd', callbackRemove)
          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
        callbackRemove();
    } else if (callback) {
      callback();
    }
  };

  Modal.prototype.checkScrollbar = function() {
    this.scrollbarWidth = this.measureScrollbar();
  };

  Modal.prototype.setScrollbar = function() {
    let bodyPad = parseInt((this.$body.css('padding-right') || 0), 10);
    if (this.scrollbarWidth) this.$body.css('padding-right', bodyPad + this.scrollbarWidth);
  };

  Modal.prototype.resetScrollbar = function() {
    this.$body.css('padding-right', '');
  };

  Modal.prototype.measureScrollbar = function() { // thx walsh
    if (document.body.clientWidth >= window.innerWidth) return 0;
    let scrollDiv = document.createElement('div');
    scrollDiv.className = 'modal-scrollbar-measure';
    this.$body.append(scrollDiv);
    let scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
    this.$body[0].removeChild(scrollDiv);
    return scrollbarWidth;
  };


  // MODAL PLUGIN DEFINITION
  // =======================

  function Plugin(option, _relatedTarget) {
    return this.each(function() {
      let $this = $(this);
      let data = $this.data('bs.modal');
      let options = $.extend({}, Modal.DEFAULTS, $this.data(), typeof option == 'object' && option);

      if (!data) $this.data('bs.modal', (data = new Modal(this, options)));
      if (typeof option == 'string') data[option](_relatedTarget);
      else if (options.show) data.show(_relatedTarget);
    });
  }

  let old = $.fn.modal;

  $.fn.modal = Plugin;
  $.fn.modal.Constructor = Modal;


  // MODAL NO CONFLICT
  // =================

  $.fn.modal.noConflict = function() {
    $.fn.modal = old;
    return this;
  };


  // MODAL DATA-API
  // ==============

  $(document).on('click.bs.modal.data-api', '[data-toggle="modal"]', function(e) {
    let $this = $(this);
    let href = $this.attr('href');
    let $target = $($this.attr('data-target') || (href && href.replace(/.*(?=#[^\s]+$)/, ''))); // strip for ie7
    let option = $target.data('bs.modal') ? 'toggle' : $.extend({remote: !/#/.test(href) && href}, $target.data(), $this.data());

    if ($this.is('a')) e.preventDefault();

    $target.one('show.bs.modal', function(showEvent) {
      if (showEvent.isDefaultPrevented()) return; // only register focus restorer if modal will actually get shown
      $target.one('hidden.bs.modal', function() {
        $this.is(':visible') && $this.trigger('focus');
      });
    });
    Plugin.call($target, option, this);
  });
}(jQuery);