Converted Observatory vm-view && isolate-view elements

runtime/observatory/lib/src/elements/isolate/location.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.
+
+import 'dart:html';
+import 'dart:async';
+import 'package:observatory/models.dart' as M;
+import 'package:observatory/src/elements/function_ref.dart';
+import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
+import 'package:observatory/src/elements/helpers/tag.dart';
+import 'package:observatory/src/elements/source_link.dart';
+
+class IsolateLocationElement extends HtmlElement implements Renderable {
+  static const tag = const Tag<IsolateLocationElement>('isolate-location',
+                                                    dependencies: const [
+                                                       FunctionRefElement.tag,
+                                                       SourceLinkElement.tag
+                                                    ]);
+
+  RenderingScheduler<IsolateLocationElement> _r;
+
+  Stream<RenderedEvent<IsolateLocationElement>> get onRendered =>
+      _r.onRendered;
+
+  M.Isolate _isolate;
+  M.EventRepository _events;
+  M.ScriptRepository _scripts;
+  StreamSubscription _debugSubscription;
+  StreamSubscription _isolateSubscription;
+
+  factory IsolateLocationElement(M.Isolate isolate,
+                                 M.EventRepository events,
+                                 M.ScriptRepository scripts,
+                                 {RenderingQueue queue}) {
+    assert(isolate != null);
+    assert(events != null);
+    assert(scripts != null);
+    IsolateLocationElement e = document.createElement(tag.name);
+    e._r = new RenderingScheduler(e, queue: queue);
+    e._isolate = isolate;
+    e._events = events;
+    e._scripts = scripts;
+    return e;
+  }
+
+  IsolateLocationElement.created() : super.created();
+
+  @override
+  void attached() {
+    super.attached();
+    _r.enable();
+    _debugSubscription = _events.onDebugEvent.listen(_eventListener);
+    _isolateSubscription = _events.onIsolateEvent.listen(_eventListener);
+  }
+
+  @override
+  void detached() {
+    super.detached();
+    children = [];
+    _r.disable(notify: true);
+    _debugSubscription.cancel();
+    _isolateSubscription.cancel();
+  }
+
+  void render() {
+    switch (_isolate.status) {
+      case M.IsolateStatus.loading:
+        children = [new SpanElement()..text = 'not yet runnable'];
+        break;
+      case M.IsolateStatus.running:
+        children = [
+          new SpanElement()..text = 'at ',
+          new FunctionRefElement(_isolate,
+                                 M.topFrame(_isolate.pauseEvent).function,
+                                 queue: _r.queue),
+          new SpanElement()..text = ' (',
+          new SourceLinkElement(_isolate,
+                                M.topFrame(_isolate.pauseEvent).location,
+                                _scripts,
+                                queue: _r.queue),
+          new SpanElement()..text = ') '
+        ];
+        break;
+      case M.IsolateStatus.paused:
+        if (_isolate.pauseEvent is M.PauseStartEvent) {
+          children = [new SpanElement()..text = 'at isolate start'];
+        } else if (_isolate.pauseEvent is M.PauseExitEvent) {
+          children = [new SpanElement()..text = 'at isolate exit'];
+        } else if (_isolate.pauseEvent is M.NoneEvent) {
+          children = [new SpanElement()..text = 'not yet runnable'];
+        } else {
+          final content = <Element>[];
+          if (_isolate.pauseEvent is M.PauseBreakpointEvent) {
+            content.add(new SpanElement()..text = 'by breakpoint');
+          } else if (_isolate.pauseEvent is M.PauseExceptionEvent) {
+            content.add(new SpanElement()..text = 'by exception');
+          }
+          if (M.topFrame(_isolate.pauseEvent) != null) {
+            content.addAll([
+              new SpanElement()..text = ' at ',
+              new FunctionRefElement(_isolate,
+                                     M.topFrame(_isolate.pauseEvent).function,
+                                     queue: _r.queue),
+              new SpanElement()..text = ' (',
+              new SourceLinkElement(_isolate,
+                                    M.topFrame(_isolate.pauseEvent).location,
+                                    _scripts,
+                                    queue: _r.queue),
+              new SpanElement()..text = ') '
+            ]);
+          }
+          children = content;
+        }
+        break;
+      default:
+        children = const [];
+    }
+  }
+
+  void _eventListener(e) {
+    if (e.isolate.id == _isolate.id) {
+      _r.dirty();
+    }
+  }
+}