jquery.uniform.js checkbox knockout binding handler

ko_bh_checkedUniform.js

ko.bindingHandlers.checkedUniform = {
  init: function(element, valueAccessor) {
    ko.bindingHandlers.checked.init(element, valueAccessor);
    $(element).uniform();
  },
  update: function(element, valueAccessor) {
    var value = ko.utils.unwrapObservable(valueAccessor());
    if (value === null) {
        element.indeterminate = true;
    }
    else {
        element.indeterminate = false;
    }
    $.uniform.update($(element));
  }
};