microspid-8.x-1.0-beta12/js/ajax-confirm.js

/**
 * @file
 * Confirm dialog for specific ajax submits.
 */
(function ($, Drupal) {

  /**
   * Attaches the confirm dialog to all enabled elements for ajax confirmation.
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Attaches the ajax confirmation behaviors.
   * @prop {Drupal~behaviorDetach} detach
   *   Detaches the autocomplete behaviors.
   */
  Drupal.behaviors.ajaxConfirm = {
    attach: function (context, settings) {
 
      /**
       * Returns the ajax instance corresponding to an element.
       *
       * @param element
       *   The element for which to return its ajax instance.
       *
       * @returns {Drupal.Ajax | null}
       *   The ajax instance if found, otherwise null.
       */
      function findAjaxInstance(element) {
        var ajax = null;
        var selector = '#' + element.id;
        for (var index in Drupal.ajax.instances) {
          var ajaxInstance = Drupal.ajax.instances[index];
          if (ajaxInstance && (ajaxInstance.selector == selector)) {
            ajax = ajaxInstance;
            break;
          }
        }
        return ajax;
      }

      /**
       * Adds ajax confirmation to the specified class selectors in the settings.
       *
       * @param {HTMLDocument|HTMLElement} [context=document]
       *   An element to attach behaviors to.
       * @param {object} [settings=drupalSettings]
       *   An object containing settings for the current context. If none is given,
       *   the global {@link drupalSettings} object is used.
       */
      function ajaxConfirm(context, settings) {
        if (typeof settings.ajaxConfirm != 'undefined') {
          for (var classNameConfirm in settings.ajaxConfirm) {
            $(context).find('.' + classNameConfirm).once('ajax-confirm').each(function () {
              var ajax = findAjaxInstance(this);
              if (ajax) {
                // Store the original beforeSend function, which will be called
                // if the user confirms the action.
                ajax.options.originalBeforeSend = ajax.options.beforeSend;
                
                ajax.options.beforeSend = function (xmlhttprequest, options) {
                  if (!ajax.alreadyConfirmed) {
                    // Wait for an user input and if desired trigger the ajax
                    // submission again but flag the ajax object so that the
                    // next time we do not interrupt the submission.
                    dialog_options = settings.ajaxConfirm[classNameConfirm];
                    var text = typeof dialog_options.text != 'undefined' ? dialog_options.text : Drupal.t('Are you sure?');
                    answer = confirm(text);
                    if (answer == true) {
                      ajax.alreadyConfirmed = true;
                      $(ajax.element).trigger(ajax.element_settings.event);
                    } else {
                      // Interrupt the ajax submission.
                      ajax.ajaxing = false;
                      return false;
                    }
                  }
                  if (ajax.alreadyConfirmed) {
                    var beforeSend = ajax.options.originalBeforeSend(xmlhttprequest, options);
                    ajax.alreadyConfirmed = false;
                    return beforeSend;
                  }
                };
              }
            });
          }
        }
      }

      ajaxConfirm(context, settings);
    }
  };

})(jQuery, Drupal);