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content / web_test / common / tracked_dictionary.h [blame]
// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_WEB_TEST_COMMON_TRACKED_DICTIONARY_H_
#define CONTENT_WEB_TEST_COMMON_TRACKED_DICTIONARY_H_
#include <string>
#include "base/values.h"
namespace content {
// TrackedDictionary wraps base::Value::Dict, but forces all mutations to go
// through TrackedDictionary's Set methods. This allows tracking of changes
// accumulated since the last call to ResetChangeTracking.
class TrackedDictionary {
public:
TrackedDictionary();
TrackedDictionary(const TrackedDictionary&) = delete;
TrackedDictionary& operator=(const TrackedDictionary&) = delete;
// Current value of the tracked dictionary.
const base::Value::Dict& 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::Value::Dict& 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::Value::Dict& new_changes);
// Sets a value in |current_values| and tracks the change in |changed_values|.
void Set(const std::string& path, base::Value new_value);
// Type-specific setter for convenience.
void SetBoolean(const std::string& path, bool new_value);
void SetInteger(const std::string& path, int new_value);
void SetString(const std::string& path, const std::string& new_value);
private:
base::Value::Dict current_values_;
base::Value::Dict changed_values_;
};
} // namespace content
#endif // CONTENT_WEB_TEST_COMMON_TRACKED_DICTIONARY_H_