/* ========================================================================

 * Bootstrap: button.js v3.3.7

 * http://getbootstrap.com/javascript/#buttons

 * ========================================================================

 * Copyright 2011-2016 Twitter, Inc.

 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)

 * ======================================================================== */

+function ($) {

  'use strict';

  // BUTTON PUBLIC CLASS DEFINITION

  // ==============================

  var Button = function (element, options) {

    this.$element  = $(element)

    this.options   = $.extend({}, Button.DEFAULTS, options)

    this.isLoading = false

  }

  Button.VERSION  = '3.3.7'

  Button.DEFAULTS = {

    loadingText: 'loading...'

  }

  Button.prototype.setState = function (state) {

    var d    = 'disabled'

    var $el  = this.$element

    var val  = $el.is('input') ? 'val' : 'html'

    var data = $el.data()

    state += 'Text'

    if (data.resetText == null) $el.data('resetText', $el[val]())

    // push to event loop to allow forms to submit

    setTimeout($.proxy(function () {

      $el[val](data[state] == null ? this.options[state] : data[state])

      if (state == 'loadingText') {

        this.isLoading = true

        $el.addClass(d).attr(d, d).prop(d, true)

      } else if (this.isLoading) {

        this.isLoading = false

        $el.removeClass(d).removeAttr(d).prop(d, false)

      }

    }, this), 0)

  }

  Button.prototype.toggle = function () {

    var changed = true

    var $parent = this.$element.closest('[data-toggle="buttons"]')

    if ($parent.length) {

      var $input = this.$element.find('input')

      if ($input.prop('type') == 'radio') {

        if ($input.prop('checked')) changed = false

        $parent.find('.active').removeClass('active')

        this.$element.addClass('active')

      } else if ($input.prop('type') == 'checkbox') {

        if (($input.prop('checked')) !== this.$element.hasClass('active')) changed = false

        this.$element.toggleClass('active')

      }

      $input.prop('checked', this.$element.hasClass('active'))

      if (changed) $input.trigger('change')

    } else {

      this.$element.attr('aria-pressed', !this.$element.hasClass('active'))

      this.$element.toggleClass('active')

    }

  }

  // BUTTON PLUGIN DEFINITION

  // ========================

  function Plugin(option) {

    return this.each(function () {

      var $this   = $(this)

      var data    = $this.data('bs.button')

      var options = typeof option == 'object' && option

      if (!data) $this.data('bs.button', (data = new Button(this, options)))

      if (option == 'toggle') data.toggle()

      else if (option) data.setState(option)

    })

  }

  var old = $.fn.button

  $.fn.button             = Plugin

  $.fn.button.Constructor = Button

  // BUTTON NO CONFLICT

  // ==================

  $.fn.button.noConflict = function () {

    $.fn.button = old

    return this

  }

  // BUTTON DATA-API

  // ===============

  $(document)

    .on('click.bs.button.data-api', '[data-toggle^="button"]', function (e) {

      var $btn = $(e.target).closest('.btn')

      Plugin.call($btn, 'toggle')

      if (!($(e.target).is('input[type="radio"], input[type="checkbox"]'))) {

        // Prevent double click on radios, and the double selections (so cancellation) on checkboxes

        e.preventDefault()

        // The target component still receive the focus

        if ($btn.is('input,button')) $btn.trigger('focus')

        else $btn.find('input:visible,button:visible').first().trigger('focus')

      }

    })

    .on('focus.bs.button.data-api blur.bs.button.data-api', '[data-toggle^="button"]', function (e) {

      $(e.target).closest('.btn').toggleClass('focus', /^focus(in)?$/.test(e.type))

    })

}(jQuery);