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

// Copyright (c) 2013, 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.

import 'dart:async';

import 'package:web/web.dart';

import 'helpers/custom_element.dart';
import 'helpers/element_utils.dart';
import 'helpers/rendering_scheduler.dart';
import 'helpers/uris.dart';

import '../../models.dart' as M show IsolateRef, MegamorphicCacheRef;

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

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

  late M.IsolateRef _isolate;
  late M.MegamorphicCacheRef _cache;

  M.IsolateRef get isolate => _isolate;
  M.MegamorphicCacheRef get cache => _cache;

  factory MegamorphicCacheRefElement(
    M.IsolateRef isolate,
    M.MegamorphicCacheRef cache, {
    RenderingQueue? queue,
  }) {
    MegamorphicCacheRefElement e = new MegamorphicCacheRefElement.created();
    e._r = new RenderingScheduler<MegamorphicCacheRefElement>(e, queue: queue);
    e._isolate = isolate;
    e._cache = cache;
    return e;
  }

  MegamorphicCacheRefElement.created() : super.created('megamorphic-cache-ref');

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

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

  void render() {
    children = <HTMLElement>[
      new HTMLAnchorElement()
        ..href = Uris.inspect(_isolate, object: _cache)
        ..appendChildren(<HTMLElement>[
          new HTMLSpanElement()
            ..className = 'emphasize'
            ..textContent = 'MegamorphicCache',
          new HTMLSpanElement()..textContent = ' (${_cache.selector})',
        ]),
    ];
  }
}