1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef COMPONENTS_DOM_DISTILLER_CORE_DISTILLED_PAGE_PREFS_H_ 6#define COMPONENTS_DOM_DISTILLER_CORE_DISTILLED_PAGE_PREFS_H_ 7 8#include "base/macros.h" 9#include "base/memory/weak_ptr.h" 10#include "base/observer_list.h" 11 12class PrefService; 13 14namespace user_prefs { 15class PrefRegistrySyncable; 16} 17 18namespace dom_distiller { 19 20// Interface for preferences used for distilled page. 21class DistilledPagePrefs { 22 public: 23 // Possible font families for distilled page. 24 enum FontFamily { 25#define DEFINE_FONT_FAMILY(name, value) name = value, 26#include "components/dom_distiller/core/font_family_list.h" 27#undef DEFINE_FONT_FAMILY 28 }; 29 30 // Possible themes for distilled page. 31 enum Theme { 32#define DEFINE_THEME(name, value) name = value, 33#include "components/dom_distiller/core/theme_list.h" 34#undef DEFINE_THEME 35 }; 36 37 class Observer { 38 public: 39 virtual void OnChangeFontFamily(FontFamily font) = 0; 40 virtual void OnChangeTheme(Theme theme) = 0; 41 }; 42 43 explicit DistilledPagePrefs(PrefService* pref_service); 44 ~DistilledPagePrefs(); 45 46 static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry); 47 48 // Sets the user's preference for the font family of distilled pages. 49 void SetFontFamily(FontFamily new_font); 50 // Returns the user's preference for the font family of distilled pages. 51 FontFamily GetFontFamily(); 52 53 // Sets the user's preference for the theme of distilled pages. 54 void SetTheme(Theme new_theme); 55 // Returns the user's preference for the theme of distilled pages. 56 Theme GetTheme(); 57 58 void AddObserver(Observer* obs); 59 void RemoveObserver(Observer* obs); 60 61 private: 62 // Notifies all Observers of new font family. 63 void NotifyOnChangeFontFamily(FontFamily font_family); 64 // Notifies all Observers of new theme. 65 void NotifyOnChangeTheme(Theme theme); 66 67 PrefService* pref_service_; 68 ObserverList<Observer> observers_; 69 70 base::WeakPtrFactory<DistilledPagePrefs> weak_ptr_factory_; 71 72 DISALLOW_COPY_AND_ASSIGN(DistilledPagePrefs); 73}; 74 75} // namespace dom_distiller 76 77#endif // COMPONENTS_DOM_DISTILLER_CORE_DISTILLED_PAGE_PREFS_H_ 78