http://bayalagbuteegch.mn/js/bootstrap-fileupload.js

1/* ===========================================================
2 * bootstrap-fileupload.js j2
3 * http://jasny.github.com/bootstrap/javascript.html#fileupload
4 * ===========================================================
5 * Copyright 2012 Jasny BV, Netherlands.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License")
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ========================================================== */
19
20
21!function ($) {
22
23  "use strict"; // jshint ;_
24
25 /* FILEUPLOAD PUBLIC CLASS DEFINITION
26  * ================================= */
27
28  var Fileupload = function (element, options) {
29    this.$element = $(element)
30    this.type = this.$element.data('uploadtype') || (this.$element.find('.img-thumbnail').length > 0 ? "image" : "file")
31      
32    this.$input = this.$element.find(':file')
33    if (this.$input.length === 0) return
34
35    // this.name = this.$input.attr('name') || options.name
36
37    this.$hidden = this.$element.find('input[type=hidden][name="'+this.name+'"]')
38    if (this.$hidden.length === 0) {
39      this.$hidden = $('<input type="hidden" />')
40      this.$element.prepend(this.$hidden)
41    }
42
43    this.$preview = this.$element.find('.fileupload-preview')
44    var height = this.$preview.css('height')
45    if (this.$preview.css('display') != 'inline' && height != '0px' && height != 'none') this.$preview.css('line-height', height)
46
47    this.original = {
48      'exists': this.$element.hasClass('fileupload-exists'),
49      'preview': this.$preview.html(),
50      'hiddenVal': this.$hidden.val()
51    }
52    
53    this.$remove = this.$element.find('[data-dismiss="fileupload"]')
54
55    this.$element.find('[data-trigger="fileupload"]').on('click.fileupload', $.proxy(this.trigger, this))
56
57    this.listen()
58  }
59  
60  Fileupload.prototype = {
61    
62    listen: function() {
63      this.$input.on('change.fileupload', $.proxy(this.change, this))
64      $(this.$input[0].form).on('reset.fileupload', $.proxy(this.reset, this))
65      if (this.$remove) this.$remove.on('click.fileupload', $.proxy(this.clear, this))
66    },
67    
68    change: function(e, invoked) {
69      if (invoked === 'clear') return
70      
71      var file = e.target.files !== undefined ? e.target.files[0] : (e.target.value ? { name: e.target.value.replace(/^.+\\/, '') } : null)
72      
73      if (!file) {
74        this.clear()
75        return
76      }
77      
78      this.$hidden.val('')
79      this.$hidden.attr('name', '')
80      this.$input.attr('name', this.name)
81  
82      if (this.type === "image" && this.$preview.length > 0 && (typeof file.type !== "undefined" ? file.type.match('image.*') : file.name.match(/\.(gif|png|jpe?g)$/i)) && typeof FileReader !== "undefined") {
83        var reader = new FileReader()
84        var preview = this.$preview
85        var element = this.$element
86
87    console.log(preview.css('max-height'));
88    
89        reader.onload = function(e) {
90          preview.html('<img src="' + e.target.result + '" class="img-responsive" />')
91          element.addClass('fileupload-exists').removeClass('fileupload-new')
92          $(element).trigger('imagechange')
93        }
94
95        reader.readAsDataURL(file)
96      } else {
97        this.$preview.text(file.name)
98        this.$element.addClass('fileupload-exists').removeClass('fileupload-new')
99      }
100    },
101
102    clear: function(e) {
103      this.$hidden.val('')
104      this.$hidden.attr('name', this.name)
105      this.$input.attr('name', '')
106
107      //ie8+ doesn't support changing the value of input with type=file so clone instead
108      if (navigator.userAgent.match(/msie/i)){ 
109          var inputClone = this.$input.clone(true);
110          this.$input.after(inputClone);
111          this.$input.remove();
112          this.$input = inputClone;
113      }else{
114          this.$input.val('')
115      }
116
117      this.$preview.html('')
118      this.$element.addClass('fileupload-new').removeClass('fileupload-exists')
119
120      if (e) {
121        this.$input.trigger('change', [ 'clear' ])
122        e.preventDefault()
123      }
124    },
125    
126    reset: function(e) {
127      this.clear()
128      
129      this.$hidden.val(this.original.hiddenVal)
130      this.$preview.html(this.original.preview)
131      
132      if (this.original.exists) this.$element.addClass('fileupload-exists').removeClass('fileupload-new')
133       else this.$element.addClass('fileupload-new').removeClass('fileupload-exists')
134    },
135    
136    trigger: function(e) {
137      this.$input.trigger('click')
138      e.preventDefault()
139    }
140  }
141
142  
143 /* FILEUPLOAD PLUGIN DEFINITION
144  * =========================== */
145
146  $.fn.fileupload = function (options) {
147    return this.each(function () {
148      var $this = $(this)
149      , data = $this.data('fileupload')
150      if (!data) $this.data('fileupload', (data = new Fileupload(this, options)))
151      if (typeof options == 'string') data[options]()
152    })
153  }
154
155  $.fn.fileupload.Constructor = Fileupload
156
157
158 /* FILEUPLOAD DATA-API
159  * ================== */
160

161  $(document).on('click.fileupload.data-api', '[data-provides="fileupload"]', function (e) {
162    var $this = $(this)
163    if ($this.data('fileupload')) return
164    $this.fileupload($this.data())
165      
166    var $target = $(e.target).closest('[data-dismiss="fileupload"],[data-trigger="fileupload"]');
167    if ($target.length > 0) {
168      $target.trigger('click.fileupload')
169      e.preventDefault()
170    }
171  })
172
173}(window.jQuery);