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

 * Bootstrap: fileinput.js v3.1.3

 * http://jasny.github.com/bootstrap/javascript/#fileinput

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

 * Copyright 2012-2014 Arnold Daniels

 *

 * Licensed under the Apache License, Version 2.0 (the "License")

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

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



+function ($) { "use strict";



  var isIE = window.navigator.appName == 'Microsoft Internet Explorer'



  // FILEUPLOAD PUBLIC CLASS DEFINITION

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



  var Fileinput = function (element, options) {

    this.$element = $(element)

    

    this.$input = this.$element.find(':file')

    if (this.$input.length === 0) return



    this.name = this.$input.attr('name') || options.name



    this.$hidden = this.$element.find('input[type=hidden][name="' + this.name + '"]')

    if (this.$hidden.length === 0) {

      this.$hidden = $('<input type="hidden">').insertBefore(this.$input)

    }



    this.$preview = this.$element.find('.fileinput-preview')

    var height = this.$preview.css('height')

    if (this.$preview.css('display') !== 'inline' && height !== '0px' && height !== 'none') {

      this.$preview.css('line-height', height)

    }

        

    this.original = {

      exists: this.$element.hasClass('fileinput-exists'),

      preview: this.$preview.html(),

      hiddenVal: this.$hidden.val()

    }

    

    this.listen()

  }

  

  Fileinput.prototype.listen = function() {

    this.$input.on('change.bs.fileinput', $.proxy(this.change, this))

    $(this.$input[0].form).on('reset.bs.fileinput', $.proxy(this.reset, this))

    

    this.$element.find('[data-trigger="fileinput"]').on('click.bs.fileinput', $.proxy(this.trigger, this))

    this.$element.find('[data-dismiss="fileinput"]').on('click.bs.fileinput', $.proxy(this.clear, this))

  },



  Fileinput.prototype.change = function(e) {

    var files = e.target.files === undefined ? (e.target && e.target.value ? [{ name: e.target.value.replace(/^.+\\/, '')}] : []) : e.target.files

    

    e.stopPropagation()



    if (files.length === 0) {

      this.clear()

      return

    }



    this.$hidden.val('')

    this.$hidden.attr('name', '')

    this.$input.attr('name', this.name)



    var file = files[0]



    if (this.$preview.length > 0 && (typeof file.type !== "undefined" ? file.type.match(/^image\/(gif|png|jpeg)$/) : file.name.match(/\.(gif|png|jpe?g)$/i)) && typeof FileReader !== "undefined") {

      var reader = new FileReader()

      var preview = this.$preview

      var element = this.$element



      reader.onload = function(re) {

        var $img = $('<img>')

        $img[0].src = re.target.result

        files[0].result = re.target.result

        

        element.find('.fileinput-filename').text(file.name)

        

        // if parent has max-height, using `(max-)height: 100%` on child doesn't take padding and border into account

        if (preview.css('max-height') != 'none') $img.css('max-height', parseInt(preview.css('max-height'), 10) - parseInt(preview.css('padding-top'), 10) - parseInt(preview.css('padding-bottom'), 10)  - parseInt(preview.css('border-top'), 10) - parseInt(preview.css('border-bottom'), 10))

        

        preview.html($img)

        element.addClass('fileinput-exists').removeClass('fileinput-new')



        element.trigger('change.bs.fileinput', files)

      }



      reader.readAsDataURL(file)

    } else {

      this.$element.find('.fileinput-filename').text(file.name)

      this.$preview.text(file.name)

      

      this.$element.addClass('fileinput-exists').removeClass('fileinput-new')

      

      this.$element.trigger('change.bs.fileinput')

    }

  },



  Fileinput.prototype.clear = function(e) {

    if (e) e.preventDefault()

    

    this.$hidden.val('')

    this.$hidden.attr('name', this.name)

    this.$input.attr('name', '')



    //ie8+ doesn't support changing the value of input with type=file so clone instead

    if (isIE) { 

      var inputClone = this.$input.clone(true);

      this.$input.after(inputClone);

      this.$input.remove();

      this.$input = inputClone;

    } else {

      this.$input.val('')

    }



    this.$preview.html('')

    this.$element.find('.fileinput-filename').text('')

    this.$element.addClass('fileinput-new').removeClass('fileinput-exists')

    

    if (e !== undefined) {

      this.$input.trigger('change')

      this.$element.trigger('clear.bs.fileinput')

    }

  },



  Fileinput.prototype.reset = function() {

    this.clear()



    this.$hidden.val(this.original.hiddenVal)

    this.$preview.html(this.original.preview)

    this.$element.find('.fileinput-filename').text('')



    if (this.original.exists) this.$element.addClass('fileinput-exists').removeClass('fileinput-new')

     else this.$element.addClass('fileinput-new').removeClass('fileinput-exists')

    

    this.$element.trigger('reset.bs.fileinput')

  },



  Fileinput.prototype.trigger = function(e) {

    this.$input.trigger('click')

    e.preventDefault()

  }



  

  // FILEUPLOAD PLUGIN DEFINITION

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



  var old = $.fn.fileinput

  

  $.fn.fileinput = function (options) {

    return this.each(function () {

      var $this = $(this),

          data = $this.data('bs.fileinput')

      if (!data) $this.data('bs.fileinput', (data = new Fileinput(this, options)))

      if (typeof options == 'string') data[options]()

    })

  }



  $.fn.fileinput.Constructor = Fileinput





  // FILEINPUT NO CONFLICT

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



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

    $.fn.fileinput = old

    return this

  }





  // FILEUPLOAD DATA-API

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



  $(document).on('click.fileinput.data-api', '[data-provides="fileinput"]', function (e) {

    var $this = $(this)

    if ($this.data('bs.fileinput')) return

    $this.fileinput($this.data())

      

    var $target = $(e.target).closest('[data-dismiss="fileinput"],[data-trigger="fileinput"]');

    if ($target.length > 0) {

      e.preventDefault()

      $target.trigger('click.bs.fileinput')

    }

  })



}(window.jQuery);