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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_PRINTING_PRINT_PREVIEW_STICKY_SETTINGS_H_
#define CHROME_BROWSER_PRINTING_PRINT_PREVIEW_STICKY_SETTINGS_H_
#include <optional>
#include <string>
#include <vector>
#include "base/containers/flat_map.h"
#include "printing/print_job_constants.h"
class PrefService;
namespace user_prefs {
class PrefRegistrySyncable;
}
namespace printing {
// Holds all the settings that should be remembered (sticky) in print preview.
// A sticky setting will be restored next time the user launches print preview.
// Only one instance of this class is instantiated.
class PrintPreviewStickySettings {
public:
static PrintPreviewStickySettings* GetInstance();
PrintPreviewStickySettings();
~PrintPreviewStickySettings();
const std::string* printer_app_state() const;
// Stores app state for the last used printer.
void StoreAppState(const std::string& app_state);
void SaveInPrefs(PrefService* profile) const;
void RestoreFromPrefs(PrefService* profile);
// Parses serialized printing sticky settings state and extracts the list of
// recently used printers. Returns a map with printers ids and their ranks.
// The rank is the position in the list of recently used printers. The lower
// the rank the more recent the printer was used.
base::flat_map<std::string, int> GetPrinterRecentlyUsedRanks();
// Parses serialized printing sticky settings state and extracts the list of
// recently used printers. The list is ordered from most recently used to
// least recently used.
std::vector<std::string> GetRecentlyUsedPrinters();
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
private:
std::optional<std::string> printer_app_state_;
};
} // namespace printing
#endif // CHROME_BROWSER_PRINTING_PRINT_PREVIEW_STICKY_SETTINGS_H_
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