datahub/datahub-web/@datahub/utils/addon/templates/components/concurrency-task-state-handler.hbs

{{#if @task.last.isError}}

  {{#let (or @errorHeading "An error occurred. Please try again shortly.") as |errorMessage|}}
    {{! Show entity lockup if toggled on, otherwise yield error. This allows this component to be used in interfaces
     where rendering the lockup is not suitable, for example in a button
      <ConcurrencyTaskStateHandler @task=task @showLockup=false>
        <button>
          Click Me!
        </button>
      </ConcurrencyTaskStateHandler>
    }}
    {{#if this.showLockup}}
      <EmptyState
        @heading={{errorMessage}}
      />

      <div class="concurrency-task-state-handler__button-container">
        <button
          class="nacho-button nacho-button--large-inverse"
          onclick={{action this.performTask this.taskArgs}}
        >
          Retry
        </button>
      </div>
    {{else}}
      {{errorMessage}}
    {{/if}}
  {{/let}}


{{else}}
  {{#if @task.isRunning}}
    <div class="concurrency-task-state-handler">
      {{pendulum-ellipsis-animation}}
    </div>
  {{else}}
    {{yield}}
  {{/if}}
{{/if}}