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// Copyright (c) 2015 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 CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_IMPL_H_
#define CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_IMPL_H_
#include <string>
#include "base/gtest_prod_util.h"
#include "base/macros.h"
#include "base/prefs/pref_change_registrar.h"
#include "base/values.h"
#include "components/arc/arc_bridge_service.h"
#include "components/arc/settings/arc_settings_bridge.h"
namespace arc {
namespace fontsizes {
// The following values were obtained from chrome://settings and Android's
// Display settings on Nov 2015. They are expected to remain stable.
const float kAndroidFontScaleSmall = 0.85;
const float kAndroidFontScaleNormal = 1;
const float kAndroidFontScaleLarge = 1.15;
const float kAndroidFontScaleHuge = 1.3;
const int kChromeFontSizeNormal = 16;
const int kChromeFontSizeLarge = 20;
const int kChromeFontSizeVeryLarge = 24;
// Android has only a single float value for system-wide font size
// (font_scale). Chrome has three main int pixel values that affect
// system-wide font size. We will take the largest font value of the three
// main font values on Chrome and convert to an Android size.
double ConvertFontSizeChromeToAndroid(int default_size,
int default_fixed_size,
int minimum_size);
} // namespace fontsizes
// Listens to changes for select Chrome settings (prefs) that Android cares
// about and sends the new values to Android to keep the state in sync.
class ArcSettingsBridgeImpl : public ArcSettingsBridge,
public ArcBridgeService::Observer {
public:
ArcSettingsBridgeImpl() = default;
~ArcSettingsBridgeImpl() override;
// Starts listening to state changes of the ArcBridgeService.
// This must be called before the bridge service starts bootstrapping.
void StartObservingBridgeServiceChanges() override;
// Called when a Chrome pref we have registered an observer for has changed.
// Obtains the new pref value and sends it to Android.
void OnPrefChanged(const std::string& pref_name) const;
// ArcBridgeService::Observer
void OnStateChanged(ArcBridgeService::State state) override;
// ArcBridgeService::Observer
void OnInstanceBootPhase(InstanceBootPhase phase) override;
private:
// Registers to observe changes for Chrome settings we care about.
void StartObservingPrefChanges();
// Stops listening for Chrome settings changes.
void StopObservingPrefChanges();
// Retrives Chrome's state for the settings and send it to Android.
void SyncAllPrefs() const;
void SyncSpokenFeedbackEnabled() const;
void SyncFontSize() const;
// Registers to listen to a particular perf.
void AddPrefToObserve(const std::string& pref_name);
// Returns the integer value of the pref. pref_name must exist.
int GetIntegerPref(const std::string& pref_name) const;
// Sends a broadcast to the ArcSettings app in Android.
void SendSettingsBroadcast(const std::string& action,
const base::DictionaryValue& extras) const;
// Manages pref observation registration.
PrefChangeRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(ArcSettingsBridgeImpl);
};
} // namespace arc
#endif // CHROME_BROWSER_CHROMEOS_ARC_ARC_SETTINGS_BRIDGE_IMPL_H_
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