pkg/observatory/lib/src/elements/error_ref.dart

// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

library error_ref_element;

import 'dart:async';

import 'package:web/web.dart';

import '../../models.dart' show ErrorRef;
import 'helpers/custom_element.dart';
import 'helpers/rendering_scheduler.dart';

class ErrorRefElement extends CustomElement implements Renderable {
  late RenderingScheduler<ErrorRefElement> _r;

  Stream<RenderedEvent<ErrorRefElement>> get onRendered => _r.onRendered;

  late ErrorRef _error;

  ErrorRef get error => _error;

  factory ErrorRefElement(ErrorRef error, {RenderingQueue? queue}) {
    ErrorRefElement e = new ErrorRefElement.created();
    e._r = new RenderingScheduler<ErrorRefElement>(e, queue: queue);
    e._error = error;
    return e;
  }

  ErrorRefElement.created() : super.created('error-ref');

  @override
  void attached() {
    super.attached();
    _r.enable();
  }

  @override
  void detached() {
    super.detached();
    removeChildren();
    _r.disable(notify: true);
  }

  void render() {
    setChildren(<HTMLElement>[
      new HTMLPreElement.pre()..textContent = error.message ?? '',
    ]);
  }
}