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

 * bootstrap-fileupload.js j2

 * http://jasny.github.com/bootstrap/javascript.html#fileupload

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

 * Copyright 2012 Jasny BV, Netherlands.

 *

 * 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"; // jshint ;_



 /* FILEUPLOAD PUBLIC CLASS DEFINITION

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



  var Fileupload = function (element, options) {

    this.$element = $(element)

    this.type = this.$element.data('uploadtype') || (this.$element.find('.thumbnail').length > 0 ? "image" : "file")

      

    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" />')

      this.$element.prepend(this.$hidden)

    }



    this.$preview = this.$element.find('.fileupload-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('fileupload-exists'),

      'preview': this.$preview.html(),

      'hiddenVal': this.$hidden.val()

    }

    

    this.$remove = this.$element.find('[data-dismiss="fileupload"]')



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



    this.listen()

  }

  

  Fileupload.prototype = {

    

    listen: function() {

      this.$input.on('change.fileupload', $.proxy(this.change, this))

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

      if (this.$remove) this.$remove.on('click.fileupload', $.proxy(this.clear, this))

    },

    

    change: function(e, invoked) {

      var file = e.target.files !== undefined ? e.target.files[0] : (e.target.value ? { name: e.target.value.replace(/^.+\\/, '') } : null)

      if (invoked === 'clear') return

      

      if (!file) {

        this.clear()

        return

      }

      

      this.$hidden.val('')

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

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



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

        var reader = new FileReader()

        var preview = this.$preview

        var element = this.$element



        reader.onload = function(e) {

          preview.html('<img src="' + e.target.result + '" ' + (preview.css('max-height') != 'none' ? 'style="max-height: ' + preview.css('max-height') + ';"' : '') + ' />')

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

        }



        reader.readAsDataURL(file)

      } else {

        this.$preview.text(file.name)

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

      }

    },



    clear: function(e) {

      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($.browser.msie){

          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.addClass('fileupload-new').removeClass('fileupload-exists')



      if (e) {

        this.$input.trigger('change', [ 'clear' ])

        e.preventDefault()

      }

    },

    

    reset: function(e) {

      this.clear()

      

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

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

      

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

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

    },

    

    trigger: function(e) {

      this.$input.trigger('click')

      e.preventDefault()

    }

  }



  

 /* FILEUPLOAD PLUGIN DEFINITION

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



  $.fn.fileupload = function (options) {

    return this.each(function () {

      var $this = $(this)

      , data = $this.data('fileupload')

      if (!data) $this.data('fileupload', (data = new Fileupload(this, options)))

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

    })

  }



  $.fn.fileupload.Constructor = Fileupload





 /* FILEUPLOAD DATA-API

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



  $(function () {

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

      var $this = $(this)

      if ($this.data('fileupload')) return

      $this.fileupload($this.data())

      

      var $target = $(e.target).is('[data-dismiss=fileupload],[data-trigger=fileupload]') ?

        $(e.target) : $(e.target).parents('[data-dismiss=fileupload],[data-trigger=fileupload]').first()

      if ($target.length > 0) {

          $target.trigger('click.fileupload')

          e.preventDefault()

      }

    })

  })



}(window.jQuery);