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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DOM_DISTILLER_CORE_DISTILLED_PAGE_PREFS_H_
#define COMPONENTS_DOM_DISTILLER_CORE_DISTILLED_PAGE_PREFS_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "components/dom_distiller/core/mojom/distilled_page_prefs.mojom.h"
class PrefService;
namespace user_prefs {
class PrefRegistrySyncable;
}
namespace dom_distiller {
// Interface for preferences used for distilled page.
class DistilledPagePrefs {
public:
class Observer {
public:
virtual void OnChangeFontFamily(mojom::FontFamily font) = 0;
virtual void OnChangeTheme(mojom::Theme theme) = 0;
virtual void OnChangeFontScaling(float scaling) = 0;
};
explicit DistilledPagePrefs(PrefService* pref_service);
DistilledPagePrefs(const DistilledPagePrefs&) = delete;
DistilledPagePrefs& operator=(const DistilledPagePrefs&) = delete;
~DistilledPagePrefs();
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
// Sets the user's preference for the font family of distilled pages.
void SetFontFamily(mojom::FontFamily new_font);
// Returns the user's preference for the font family of distilled pages.
mojom::FontFamily GetFontFamily();
// Sets the user's preference for the theme of distilled pages.
void SetTheme(mojom::Theme new_theme);
// Returns the user's preference for the theme of distilled pages.
mojom::Theme GetTheme();
// Sets the user's preference for the font size scaling of distilled pages.
void SetFontScaling(float scaling);
// Returns the user's preference for the font size scaling of distilled pages.
float GetFontScaling();
void AddObserver(Observer* obs);
void RemoveObserver(Observer* obs);
private:
// Notifies all Observers of new font family.
void NotifyOnChangeFontFamily(mojom::FontFamily font_family);
// Notifies all Observers of new theme.
void NotifyOnChangeTheme(mojom::Theme theme);
// Notifies all Observers of new font scaling.
void NotifyOnChangeFontScaling(float scaling);
raw_ptr<PrefService> pref_service_;
base::ObserverList<Observer>::Unchecked observers_;
base::WeakPtrFactory<DistilledPagePrefs> weak_ptr_factory_{this};
};
} // namespace dom_distiller
#endif // COMPONENTS_DOM_DISTILLER_CORE_DISTILLED_PAGE_PREFS_H_
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