https://www.nasco.coop/sites/all/themes/bootstrap/js/modules/file/file.js?tm6sfv

1(function ($) {
2  // Override core JS so it works with "button" tags.
3  /**
4   * Attach behaviors to the file upload and remove buttons.
5   */
6  Drupal.behaviors.fileButtons = {
7    attach: function (context) {
8      $(':input.form-submit', context).bind('mousedown', Drupal.file.disableFields);
9      $('div.form-managed-file :input.form-submit', context).bind('mousedown', Drupal.file.progressBar);
10    },
11    detach: function (context) {
12      $(':input.form-submit', context).unbind('mousedown', Drupal.file.disableFields);
13      $('div.form-managed-file :input.form-submit', context).unbind('mousedown', Drupal.file.progressBar);
14    }
15  };
16  if (Drupal.file) {
17    /**
18     * Prevent file uploads when using buttons not intended to upload.
19     */
20    Drupal.file.disableFields = function (event){
21      var clickedButton = this;
22
23      // Only disable upload fields for Ajax buttons.
24      if (!$(clickedButton).hasClass('ajax-processed')) {
25        return;
26      }
27
28      // Check if we're working with an "Upload" button.
29      var $enabledFields = [];
30      if ($(this).closest('div.form-managed-file').length > 0) {
31        $enabledFields = $(this).closest('div.form-managed-file').find(':input.form-file');
32      }
33
34      // Temporarily disable upload fields other than the one we're currently
35      // working with. Filter out fields that are already disabled so that they
36      // do not get enabled when we re-enable these fields at the end of behavior
37      // processing. Re-enable in a setTimeout set to a relatively short amount
38      // of time (1 second). All the other mousedown handlers (like Drupal's Ajax
39      // behaviors) are excuted before any timeout functions are called, so we
40      // don't have to worry about the fields being re-enabled too soon.
41      // @todo If the previous sentence is true, why not set the timeout to 0?
42      var $fieldsToTemporarilyDisable = $('div.form-managed-file :input.form-file').not($enabledFields).not(':disabled');
43      $fieldsToTemporarilyDisable.attr('disabled', 'disabled');
44      setTimeout(function (){
45        $fieldsToTemporarilyDisable.attr('disabled', false);
46      }, 1000);
47    };
48    /**
49     * Add progress bar support if possible.
50     */
51    Drupal.file.progressBar = function (event) {
52      var clickedButton = this;
53      var $progressId = $(clickedButton).closest('div.form-managed-file').find(':input.file-progress');
54      if ($progressId.length) {
55        var originalName = $progressId.attr('name');
56
57        // Replace the name with the required identifier.
58        $progressId.attr('name', originalName.match(/APC_UPLOAD_PROGRESS|UPLOAD_IDENTIFIER/)[0]);
59
60        // Restore the original name after the upload begins.
61        setTimeout(function () {
62          $progressId.attr('name', originalName);
63        }, 1000);
64      }
65      // Show the progress bar if the upload takes longer than half a second.
66      setTimeout(function () {
67        $(clickedButton).closest('div.form-managed-file').find('div.ajax-progress-bar').slideDown();
68      }, 500);
69    };
70
71    /**
72     * Styling invalid file extension error message (Issue #2331595 by NetTantra).
73     */
74    Drupal.file.validateExtension = function (event) {
75      // Remove any previous errors.
76      $('.file-upload-js-error').remove();
77
78      // Add client side validation for the input[type=file].
79      var extensionPattern = event.data.extensions.replace(/,\s*/g, '|');
80      if (extensionPattern.length > 1 && this.value.length > 0) {
81        var acceptableMatch = new RegExp('\\.(' + extensionPattern + ')$', 'gi');
82        if (!acceptableMatch.test(this.value)) {
83          var error = Drupal.t("The selected file %filename cannot be uploaded. Only files with the following extensions are allowed: %extensions.", {
84            // According to the specifications of HTML5, a file upload control
85            // should not reveal the real local path to the file that a user
86            // has selected. Some web browsers implement this restriction by
87            // replacing the local path with "C:\fakepath\", which can cause
88            // confusion by leaving the user thinking perhaps Drupal could not
89            // find the file because it messed up the file path. To avoid this
90            // confusion, therefore, we strip out the bogus fakepath string.
91            '%filename': this.value.replace('C:\\fakepath\\', ''),
92            '%extensions': extensionPattern.replace(/\|/g, ', ')
93          });
94          $(this).closest('div.form-managed-file').parents('.form-item').first().prepend('<div class="alert alert-danger alert-dismissible messages error file-upload-js-error" aria-live="polite" role="alert">\
95            <button type="button" class="close" data-dismiss="alert">\

96              <span aria-hidden="true">&times;</span>\
97              <span class="sr-only">Close</span>\
98            </button>' + error + '</div>');
99          this.value = '';
100          return false;
101        }
102      }
103    };
104  }
105})(jQuery);