Index: components/test_runner/tracked_dictionary.h |
diff --git a/components/test_runner/tracked_dictionary.h b/components/test_runner/tracked_dictionary.h |
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+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef COMPONENTS_TEST_RUNNER_TRACKED_DICTIONARY_H_ |
+#define COMPONENTS_TEST_RUNNER_TRACKED_DICTIONARY_H_ |
+ |
+#include <string> |
+ |
+#include "base/macros.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/values.h" |
+#include "components/test_runner/test_runner_export.h" |
+ |
+namespace test_runner { |
+ |
+// TrackedDictionary wraps base::DictionaryValue, but forces all mutations to go |
+// through TrackedDictionary's Set methods. This allows tracking of changes |
+// accumulated since the last call to ResetChangeTracking. |
+class TEST_RUNNER_EXPORT TrackedDictionary { |
+ public: |
+ TrackedDictionary(); |
+ |
+ // Current value of the tracked dictionary. |
+ const base::DictionaryValue& current_values() const { |
+ return current_values_; |
+ } |
+ |
+ // Subset of |current_values| that have been changed (i.e. via Set method) |
+ // since the last call to ResetChangeTracking. |
+ const base::DictionaryValue& changed_values() const { |
+ return changed_values_; |
+ } |
+ |
+ // Clears out |changed_values|. |
+ void ResetChangeTracking(); |
+ |
+ // Overwrites |current_values| with values present in |new_changes|. |
+ // The new values are not present in |changed_values| afterwards. |
+ void ApplyUntrackedChanges(const base::DictionaryValue& new_changes); |
+ |
+ // Sets a value in |current_values| and tracks the change in |changed_values|. |
+ void Set(const std::string& path, scoped_ptr<base::Value> new_value); |
+ |
+ // Type-specific setter for convenience. |
+ void SetBoolean(const std::string& path, bool new_value); |
+ |
+ private: |
+ base::DictionaryValue current_values_; |
+ base::DictionaryValue changed_values_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(TrackedDictionary); |
+}; |
+ |
+} // namespace test_runner |
+ |
+#endif // COMPONENTS_TEST_RUNNER_TRACKED_DICTIONARY_H_ |