| // 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 source_link_element; |
| |
| import 'dart:html'; |
| import 'dart:async'; |
| import 'package:observatory/models.dart' |
| show IsolateRef, SourceLocation, Script, ScriptRepository; |
| import 'package:observatory/service.dart' as S; |
| import 'package:observatory/src/elements/helpers/rendering_scheduler.dart'; |
| import 'package:observatory/src/elements/helpers/tag.dart'; |
| import 'package:observatory/src/elements/helpers/uris.dart'; |
| |
| class SourceLinkElement extends CustomElement implements Renderable { |
| static const tag = const Tag<SourceLinkElement>('source-link'); |
| |
| RenderingScheduler _r; |
| |
| Stream<RenderedEvent<SourceLinkElement>> get onRendered => _r.onRendered; |
| |
| IsolateRef _isolate; |
| SourceLocation _location; |
| Script _script; |
| ScriptRepository _repository; |
| |
| IsolateRef get isolate => _isolate; |
| SourceLocation get location => _location; |
| |
| factory SourceLinkElement( |
| IsolateRef isolate, SourceLocation location, ScriptRepository repository, |
| {RenderingQueue queue}) { |
| assert(isolate != null); |
| assert(location != null); |
| SourceLinkElement e = new SourceLinkElement.created(); |
| e._r = new RenderingScheduler<SourceLinkElement>(e, queue: queue); |
| e._isolate = isolate; |
| e._location = location; |
| e._repository = repository; |
| return e; |
| } |
| |
| SourceLinkElement.created() : super.created(tag); |
| |
| @override |
| void attached() { |
| super.attached(); |
| _repository.get(_isolate, _location.script.id).then((script) { |
| _script = script; |
| _r.dirty(); |
| }, onError: (e) { |
| // The script object has expired, likely due to a hot reload. |
| (_isolate as S.Isolate).getScripts().then((scripts) { |
| for (final script in scripts) { |
| if (script.uri == _location.script.uri) { |
| _script = script; |
| _r.dirty(); |
| return; |
| } |
| } |
| // Rethrow the original exception if we can't find a match. |
| throw e; |
| }); |
| }); |
| _r.enable(); |
| } |
| |
| @override |
| void detached() { |
| super.detached(); |
| children = <Element>[]; |
| _r.disable(notify: true); |
| } |
| |
| Future render() async { |
| if (_script == null) { |
| children = <Element>[new SpanElement()..text = '<LOADING>']; |
| } else { |
| String label = _script.uri.split('/').last; |
| int token = _location.tokenPos; |
| int line = _script.tokenToLine(token); |
| int column = _script.tokenToCol(token); |
| children = <Element>[ |
| new AnchorElement( |
| href: Uris.inspect(isolate, object: _script, pos: token)) |
| ..title = _script.uri |
| ..text = '${label}:${line}:${column}' |
| ]; |
| } |
| } |
| } |