Rename several classes in barback.

pkg/barback/lib/src/asset_graph_manager.dart

Index: pkg/barback/lib/src/asset_graph_manager.dart
diff --git a/pkg/barback/lib/src/asset_graph_manager.dart b/pkg/barback/lib/src/asset_graph_manager.dart
deleted file mode 100644
index e7bf958386a8ec6ed886cedd7fe8d5bbf534e7f9..0000000000000000000000000000000000000000
--- a/pkg/barback/lib/src/asset_graph_manager.dart
+++ /dev/null
@@ -1,121 +0,0 @@
-// 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.
-
-library barback.asset_graph_manager;
-
-import 'dart:async';
-
-import 'package:stack_trace/stack_trace.dart';
-
-import 'asset.dart';
-import 'asset_provider.dart';
-import 'asset_graph.dart';
-import 'asset_id.dart';
-import 'errors.dart';
-import 'utils.dart';
-
-// TODO(nweiz): come up with better names for this and AssetGraph.
-
-/// The asset manager for an entire application.
-///
-/// This tracks each package's [AssetGraph] and routes asset requests between
-/// them.
-class AssetGraphManager {
-  /// The provider that exposes asset and package information.
-  final AssetProvider provider;
-
-  /// The [AssetGraph] for each package.
-  final _graphs = <String, AssetGraph>{};
-
-  /// The current [BuildResult] for each package's [AssetGraph].
-  ///
-  /// The result for a given package will be `null` if that [AssetGraph] is
-  /// actively building.
-  final _graphResults = <String, BuildResult>{};
-
-  /// A stream that emits a [BuildResult] each time the build is completed,
-  /// whether or not it succeeded.
-  ///
-  /// This will emit a result only once every package's [AssetGraph] has
-  /// finished building.
-  ///
-  /// If an unexpected error in barback itself occurs, it will be emitted
-  /// through this stream's error channel.
-  Stream<BuildResult> get results => _resultsController.stream;
-  final _resultsController = new StreamController<BuildResult>.broadcast();
-
-  /// A stream that emits any errors from the asset graph or the transformers.
-  ///
-  /// This emits errors as they're detected. If an error occurs in one part of
-  /// the asset graph, unrelated parts will continue building.
-  ///
-  /// This will not emit programming errors from barback itself. Those will be
-  /// emitted through the [results] stream's error channel.
-  Stream get errors => _errors;
-  Stream _errors;
-
-  /// Creates a new [AssetGraphManager] that will transform assets in all
-  /// packages made available by [provider].
-  AssetGraphManager(this.provider) {
-    for (var package in provider.packages) {
-      var graph = new AssetGraph(this, package,
-          provider.getTransformers(package));
-      // The initial result for each graph is "success" since the graph doesn't
-      // start building until some source in that graph is updated.
-      _graphResults[package] = new BuildResult.success();
-      _graphs[package] = graph;
-
-      graph.results.listen((result) {
-        _graphResults[graph.package] = result;
-        // If any graph hasn't yet finished, the overall build isn't finished
-        // either.
-        if (_graphResults.values.any((result) => result == null)) return;
-
-        // Include all build errors for all graphs. If no graphs have errors,
-        // the result will automatically be considered a success.
-        _resultsController.add(new BuildResult(flatten(
-            _graphResults.values.map((result) => result.errors))));
-      }, onError: _resultsController.addError);
-    }
-
-    _errors = mergeStreams(_graphs.values.map((graph) => graph.errors));
-  }
-
-  /// Gets the asset identified by [id].
-  ///
-  /// If [id] is for a generated or transformed asset, this will wait until
-  /// it has been created and return it. If the asset cannot be found, throws
-  /// [AssetNotFoundException].
-  Future<Asset> getAssetById(AssetId id) {
-    var graph = _graphs[id.package];
-    if (graph != null) return graph.getAssetById(id);
-    return new Future.error(
-        new AssetNotFoundException(id),
-        new Trace.current().vmTrace);
-  }
-
-  /// Adds [sources] to the graph's known set of source assets.
-  ///
-  /// Begins applying any transforms that can consume any of the sources. If a
-  /// given source is already known, it is considered modified and all
-  /// transforms that use it will be re-applied.
-  void updateSources(Iterable<AssetId> sources) {
-    groupBy(sources, (id) => id.package).forEach((package, ids) {
-      var graph = _graphs[package];
-      if (graph == null) throw new ArgumentError("Unknown package $package.");
-      _graphResults[package] = null;
-      graph.updateSources(ids);
-    });
-  }
-
-  /// Removes [removed] from the graph's known set of source assets.
-  void removeSources(Iterable<AssetId> sources) {
-    groupBy(sources, (id) => id.package).forEach((package, ids) {
-      var graph = _graphs[package];
-      if (graph == null) throw new ArgumentError("Unknown package $package.");
-      _graphResults[package] = null;
-      graph.removeSources(ids);
-    });
-  }
-}