<button ng-class="state.className" ng-disabled="{{state.disabled}}">
      <span ng-if="loading" class="ant-btn-loading-icon">
          <span class="anticon anticon-loading anticon-spin">
              <es-icon type="LoadingOutlined"></es-icon>
              </span>
      </span>
      <span ng-transclude></span>
  </button>