components/tab_groups/tab_group_color.h

// Copyright 2019 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_TAB_GROUPS_TAB_GROUP_COLOR_H_
#define COMPONENTS_TAB_GROUPS_TAB_GROUP_COLOR_H_

#include <stddef.h>
#include <map>

#include "base/component_export.h"
#include "base/containers/flat_map.h"
#include "base/macros.h"
#include "base/strings/string16.h"
#include "third_party/skia/include/core/SkColor.h"

namespace tab_groups {

// IMPORTANT: Do not change or reuse the values of any item in this enum.
// These values are written to and read from disk for session and tab restore.
//
// Any changes to the tab group color set should be made in the map returned by
// GetColorSet(). The set of valid colors is contained in the keys of that map.
// Do not add or delete items in this enum without also reflecting that change
// in the map.
//
// Any code that reads an enum value from disk should check it against the map
// from GetColorSet(). If the value is not contained in the map's keys, default
// to kGrey.
enum class TabGroupColorId {
  kGrey = 0,
  kBlue = 1,
  kRed = 2,
  kYellow = 3,
  kGreen = 4,
  kPink = 5,
  kPurple = 6,
  kCyan = 7,
  // Next value: 8
};

using ColorLabelMap = base::flat_map<TabGroupColorId, base::string16>;

// Returns a map of TabGroupColorIds to their string labels.
// When reading color IDs from disk, always verify against the keys in this
// map for valid values.
COMPONENT_EXPORT(TAB_GROUPS)
const ColorLabelMap& GetTabGroupColorLabelMap();

}  // namespace tab_groups

#endif  // COMPONENTS_TAB_GROUPS_TAB_GROUP_COLOR_H_