Select2.prototype._isChangeMutation = function()

in adminlte/html/plugins/select2/js/select2.full.js [5737:5776]

• 31 lines of code
• 14 McCabe index (conditional complexity)

  Select2.prototype._isChangeMutation = function (evt, mutations) {
    var changed = false;
    var self = this;

    // Ignore any mutation events raised for elements that aren't options or
    // optgroups. This handles the case when the select element is destroyed
    if (
      evt && evt.target && (
        evt.target.nodeName !== 'OPTION' && evt.target.nodeName !== 'OPTGROUP'
      )
    ) {
      return;
    }

    if (!mutations) {
      // If mutation events aren't supported, then we can only assume that the
      // change affected the selections
      changed = true;
    } else if (mutations.addedNodes && mutations.addedNodes.length > 0) {
      for (var n = 0; n < mutations.addedNodes.length; n++) {
        var node = mutations.addedNodes[n];

        if (node.selected) {
          changed = true;
        }
      }
    } else if (mutations.removedNodes && mutations.removedNodes.length > 0) {
      changed = true;
    } else if ($.isArray(mutations)) {
      $.each(mutations, function(evt, mutation) {
        if (self._isChangeMutation(evt, mutation)) {
          // We've found a change mutation.
          // Let's escape from the loop and continue
          changed = true;
          return false;
        }
      });
    }
    return changed;
  };