modal.js

/* ========================================================================
 * Bootstrap: modal.js v3.1.1
 * http://getbootstrap.com/javascript/#modals
 * ========================================================================
 * Copyright 2011-2014 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */


+function () { 'use strict';

  (function (o_o) {
    typeof define  == 'function' && define.amd ? define(['jquery'], o_o) :
    typeof exports == 'object' ? o_o(require('jquery')) : o_o(jQuery)
  })(function ($) {

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

    var 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  = '3.1.1'

    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) {
      var that = this
      var 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 () {
        var 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()

        var 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(300) :
          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.$body.removeClass('modal-open')

      this.resetScrollbar()
      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(300) :
        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('keyup.dismiss.bs.modal', $.proxy(function (e) {
          e.which == 27 && this.hide()
        }, this))
      } else if (!this.isShown) {
        this.$element.off('keyup.dismiss.bs.modal')
      }
    }

    Modal.prototype.hideModal = function () {
      var that = this
      this.$element.hide()
      this.backdrop(function () {
        that.$element.trigger('hidden.bs.modal')
      })
    }

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

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

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

        this.$backdrop = $('<div class="modal-backdrop ' + animate + '" />')
          .appendTo(this.$body)

        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(150) :
          callback()

      } else if (!this.isShown && this.$backdrop) {
        this.$backdrop.removeClass('in')

        var callbackRemove = function () {
          that.removeBackdrop()
          callback && callback()
        }
        $.support.transition && this.$element.hasClass('fade') ?
          this.$backdrop
            .one('bsTransitionEnd', callbackRemove)
            .emulateTransitionEnd(150) :
          callbackRemove()

      } else if (callback) {
        callback()
      }
    }

    Modal.prototype.checkScrollbar = function () {
      if (document.body.clientWidth >= window.innerWidth) return
      this.scrollbarWidth = this.scrollbarWidth || this.measureScrollbar()
    }

    Modal.prototype.setScrollbar = function () {
      var 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
      var scrollDiv = document.createElement('div')
      scrollDiv.className = 'modal-scrollbar-measure'
      this.$body.append(scrollDiv)
      var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth
      this.$body[0].removeChild(scrollDiv)
      return scrollbarWidth
    }


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

    function Plugin(option, _relatedTarget) {
      return this.each(function () {
        var $this   = $(this)
        var data    = $this.data('bs.modal')
        var 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)
      })
    }

    var 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) {
      var $this   = $(this)
      var href    = $this.attr('href')
      var $target = $($this.attr('data-target') || (href && href.replace(/.*(?=#[^\s]+$)/, ''))) //strip for ie7
      var 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)
    })

  })

}();