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Side by Side Diff: packages/charted/lib/core/utils/object_factory.dart

Issue 1521693002: Roll Observatory deps (charted -> ^0.3.0) (Closed) Base URL: https://chromium.googlesource.com/external/github.com/dart-lang/observatory_pub_packages.git@master
Patch Set: Created 5 years ago
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1 // 1 //
2 // Copyright 2014 Google Inc. All rights reserved. 2 // Copyright 2014 Google Inc. All rights reserved.
3 // 3 //
4 // Use of this source code is governed by a BSD-style 4 // Use of this source code is governed by a BSD-style
5 // license that can be found in the LICENSE file or at 5 // license that can be found in the LICENSE file or at
6 // https://developers.google.com/open-source/licenses/bsd 6 // https://developers.google.com/open-source/licenses/bsd
7 // 7 //
8 8
9 part of charted.core.utils; 9 part of charted.core.utils;
10 10
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23 /// Register a component [creator] for [name]. 23 /// Register a component [creator] for [name].
24 void register(String name, ObjectCreator<T> creator) { 24 void register(String name, ObjectCreator<T> creator) {
25 _components[name] = creator; 25 _components[name] = creator;
26 } 26 }
27 27
28 /// Create an instance for [name]. 28 /// Create an instance for [name].
29 T create(String name) { 29 T create(String name) {
30 if (!_components.containsKey(name)) { 30 if (!_components.containsKey(name)) {
31 throw new ArgumentError('Element $name not found in ComponentFactory'); 31 throw new ArgumentError('Element $name not found in ComponentFactory');
32 } 32 }
33 var creator = _components[name], 33 var creator = _components[name], instance = creator();
34 instance = creator();
35 if (instance == null) { 34 if (instance == null) {
36 throw new ArgumentError('Component $name initialization failed.'); 35 throw new ArgumentError('Component $name initialization failed.');
37 } 36 }
38 return instance; 37 return instance;
39 } 38 }
40 } 39 }
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