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web/modules/contrib/webform/js/webform.element.managed_file.js

@@ -0,0 +1,109 @@
+/**
+ * @file
+ * JavaScript behaviors for managed file uploads.
+ */
+
+(function ($, Drupal) {
+
+  'use strict';
+
+  /**
+   * Track file uploads and display confirm dialog when an file upload is inprogress.
+   *
+   * @type {Drupal~behavior}
+   */
+  Drupal.behaviors.webformManagedFileAutoUpload = {
+    attach: function attach(context) {
+      // Add submit handler to file upload form.
+      $(context).find('form')
+        .once('webform-auto-file-upload')
+        .on('submit', function (event) {
+          var $form = $(this);
+          if ($form.data('webform-auto-file-uploads') > 0 && blockSubmit($form)) {
+            event.preventDefault();
+            return false;
+          }
+          return true;
+        });
+
+      // Add submit handler to form.beforeSend.
+      // Update Drupal.Ajax.prototype.beforeSend only once.
+      if (typeof Drupal.Ajax !== 'undefined' && typeof Drupal.Ajax.prototype.beforeSubmitWebformManagedFileAutoUploadOriginal === 'undefined') {
+        Drupal.Ajax.prototype.beforeSubmitWebformManagedFileAutoUploadOriginal = Drupal.Ajax.prototype.beforeSubmit;
+        Drupal.Ajax.prototype.beforeSubmit = function (form_values, element_settings, options) {
+          var $form = this.$form;
+          var $element = $(this.element);
+
+          // Determine if the triggering element is within .form-actions.
+          var isFormActions = $element
+            .closest('.form-actions').length;
+
+          // Determine if the triggering element is within a multiple element.
+          var isMultipleUpload = $element
+            .parents('.js-form-type-webform-multiple, .js-form-type-webform-custom-composite')
+            .find('.js-form-managed-file').length;
+
+          // Determine if the triggering element is not within a
+          // managed file element.
+          var isManagedUploadButton = $element.parents('.js-form-managed-file').length;
+
+          // Only trigger block submit for .form-actions and multiple element
+          // with file upload.
+          if ($form.data('webform-auto-file-uploads') > 0 &&
+            (isFormActions || (isMultipleUpload && !isManagedUploadButton)) &&
+            blockSubmit($form)) {
+            this.ajaxing = false;
+            return false;
+          }
+          return this.beforeSubmitWebformManagedFileAutoUploadOriginal();
+        };
+      }
+
+      $(context).find('input[type="file"]').once('webform-auto-file-upload').on('change', function () {
+        // Track file upload.
+        $(this).data('msk-auto-file-upload', true);
+
+        // Increment form file uploads.
+        var $form = $(this.form);
+        var fileUploads = ($form.data('webform-auto-file-uploads') || 0);
+        $form.data('webform-auto-file-uploads', fileUploads + 1);
+      });
+    },
+    detach: function detach(context, settings, trigger) {
+      if (trigger === 'unload') {
+        $(context).find('input[type="file"]').removeOnce('webform-auto-file-upload').each(function () {
+          if ($(this).data('msk-auto-file-upload')) {
+            // Remove file upload tracking.
+            $(this).removeData('msk-auto-file-upload');
+
+            // Decrease form file uploads.
+            var $form = $(this.form);
+            var fileUploads = ($form.data('webform-auto-file-uploads') || 0);
+            $form.data('webform-auto-file-uploads', fileUploads - 1);
+          }
+        });
+      }
+    }
+  };
+
+  /**
+   * Block form submit.
+   *
+   * @param {jQuery} form
+   *   A form.
+   *
+   * @return {boolean}
+   *   TRUE if form submit should be blocked.
+   */
+  function blockSubmit(form) {
+    if ($(form).data('webform-auto-file-uploads') < 0) {
+      return false;
+    }
+
+    var message = Drupal.t('File upload inprogress. Uploaded file may be lost.') +
+      '\n' +
+      Drupal.t('Do you want to continue?');
+    return !window.confirm(message);
+  }
+
+})(jQuery, Drupal);