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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 <memory>
#include <string>
#include "base/macros.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, std::unique_ptr<base::Value> new_value);
// Type-specific setter for convenience.
void SetBoolean(const std::string& path, bool new_value);
void SetString(const std::string& path, const std::string& 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_
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