/*
 * Solo - A small and beautiful blogging system written in Java.
 * Copyright (c) 2010-2019, b3log.org & hacpai.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

!function ($) {

  "use strict"; // jshint ;_;


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

  var Modal = function (element, options) {
    this.options = options
    this.$element = $(element)
      .delegate('[data-dismiss="modal"]', 'click.dismiss.modal', $.proxy(this.hide, this))
    this.options.remote && this.$element.find('.modal-body').load(this.options.remote)
  }

  Modal.prototype = {

      constructor: Modal

    , toggle: function () {
        return this[!this.isShown ? 'show' : 'hide']()
      }

    , show: function () {
        var that = this
          , e = $.Event('show')

        this.$element.trigger(e)

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

        this.isShown = true

        this.escape()

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

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

          that.$element
            .show()

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

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

          that.enforceFocus()

          transition ?
            that.$element.one($.support.transition.end, function () { that.$element.focus().trigger('shown') }) :
            that.$element.focus().trigger('shown')

        })
      }

    , hide: function (e) {
        e && e.preventDefault()

        var that = this

        e = $.Event('hide')

        this.$element.trigger(e)

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

        this.isShown = false

        this.escape()

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

        this.$element
          .removeClass('in')
          .attr('aria-hidden', true)

        $.support.transition && this.$element.hasClass('fade') ?
          this.hideWithTransition() :
          this.hideModal()
      }

    , enforceFocus: function () {
        var that = this
        $(document).on('focusin.modal', function (e) {
          if (that.$element[0] !== e.target && !that.$element.has(e.target).length) {
            that.$element.focus()
          }
        })
      }

    , escape: function () {
        var that = this
        if (this.isShown && this.options.keyboard) {
          this.$element.on('keyup.dismiss.modal', function ( e ) {
            e.which == 27 && that.hide()
          })
        } else if (!this.isShown) {
          this.$element.off('keyup.dismiss.modal')
        }
      }

    , hideWithTransition: function () {
        var that = this
          , timeout = setTimeout(function () {
              that.$element.off($.support.transition.end)
              that.hideModal()
            }, 500)

        this.$element.one($.support.transition.end, function () {
          clearTimeout(timeout)
          that.hideModal()
        })
      }

    , hideModal: function (that) {
        this.$element
          .hide()
          .trigger('hidden')

        this.backdrop()
      }

    , removeBackdrop: function () {
        this.$backdrop.remove()
        this.$backdrop = null
      }

    , backdrop: function (callback) {
        var that = this
          , 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(document.body)

          this.$backdrop.click(
            this.options.backdrop == 'static' ?
              $.proxy(this.$element[0].focus, this.$element[0])
            : $.proxy(this.hide, this)
          )

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

          this.$backdrop.addClass('in')

          doAnimate ?
            this.$backdrop.one($.support.transition.end, callback) :
            callback()

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

          $.support.transition && this.$element.hasClass('fade')?
            this.$backdrop.one($.support.transition.end, $.proxy(this.removeBackdrop, this)) :
            this.removeBackdrop()

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


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

  $.fn.modal = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('modal')
        , options = $.extend({}, $.fn.modal.defaults, $this.data(), typeof option == 'object' && option)
      if (!data) $this.data('modal', (data = new Modal(this, options)))
      if (typeof option == 'string') data[option]()
      else if (options.show) data.show()
    })
  }

  $.fn.modal.defaults = {
      backdrop: true
    , keyboard: true
    , show: true
  }

  $.fn.modal.Constructor = Modal


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

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

    e.preventDefault()

    $target
      .modal(option)
      .one('hide', function () {
        $this.focus()
      })
  })

}(window.jQuery);