Put Kiosk App parameters into device settings.

chrome/browser/chromeos/settings/kiosk_app_local_settings.cc

-// Copyright 2013 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.
-
-#include "chrome/browser/chromeos/settings/kiosk_app_local_settings.h"
-
-#include <set>
-
-#include "base/prefs/pref_service.h"
-#include "base/string_util.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
-#include "chrome/browser/chromeos/settings/cros_settings_names.h"
-#include "chrome/browser/prefs/scoped_user_pref_update.h"
-
-namespace chromeos {
-
-KioskAppLocalSettings::KioskAppLocalSettings(
-    const NotifyObserversCallback& notify_cb)
-    : CrosSettingsProvider(notify_cb),
-      default_auto_launch_(""),
-      default_disable_bailout_shortcut_(false) {
-  // Local state could be NULL in test.
-  if (g_browser_process->local_state())
-    ReadApps();
-}
-
-KioskAppLocalSettings::~KioskAppLocalSettings() {}
-
-void KioskAppLocalSettings::ReadApps() {
-  apps_.Clear();
-
-  PrefService* local_state = g_browser_process->local_state();
-  const base::DictionaryValue* dict =
-      local_state->GetDictionary(KioskAppManager::kKioskDictionaryName);
-  const base::DictionaryValue* apps_dict;
-  if (!dict->GetDictionary(KioskAppManager::kKeyApps, &apps_dict))
-    return;
-
-  for (base::DictionaryValue::Iterator it(*apps_dict);
-       !it.IsAtEnd();
-       it.Advance()) {
-    apps_.AppendString(it.key());
-  }
-}
-
-void KioskAppLocalSettings::WriteApps(const base::Value& value) {
-  std::set<std::string> old_apps;
-  for (base::ListValue::const_iterator it = apps_.begin();
-       it != apps_.end();
-       ++it) {
-    std::string app;
-    CHECK((*it)->GetAsString(&app));
-    old_apps.insert(app);
-  }
-
-  PrefService* local_state = g_browser_process->local_state();
-  DictionaryPrefUpdate dict_update(local_state,
-                                   KioskAppManager::kKioskDictionaryName);
-  base::DictionaryValue* apps_dict;
-  if (!dict_update->GetDictionary(KioskAppManager::kKeyApps, &apps_dict)) {
-    apps_dict = new base::DictionaryValue;
-    dict_update->Set(KioskAppManager::kKeyApps, apps_dict);
-  }
-
-  const base::ListValue* list_value;
-  CHECK(value.GetAsList(&list_value));
-
-  // Updates "apps" dictionary and |old_apps| set.
-  for (base::ListValue::const_iterator new_it = list_value->begin();
-       new_it != list_value->end();
-       ++new_it) {
-    std::string app;
-    CHECK((*new_it)->GetAsString(&app));
-
-    std::set<std::string>::iterator old_it = old_apps.find(app);
-    if (old_it != old_apps.end())
-      old_apps.erase(old_it);
-    else
-      apps_dict->Set(app, new base::DictionaryValue);
-  }
-
-  const std::string auto_launch_key =
-      std::string(kKioskAutoLaunch).substr(kKioskAppSettingsPrefixLength);
-  std::string auto_launch;
-  dict_update->GetString(auto_launch_key, &auto_launch);
-  bool reset_auto_launch = false;
-
-  // Removes remaining |old_apps|.
-  for (std::set<std::string>::iterator it = old_apps.begin();
-       it != old_apps.end();
-       ++it) {
-    if (*it == auto_launch)
-      reset_auto_launch = true;
-
-    apps_dict->Remove(*it, NULL);
-  }
-
-  if (reset_auto_launch) {
-    dict_update->Remove(auto_launch_key, NULL);
-    NotifyObservers(kKioskAutoLaunch);
-  }
-
-  // Updates cached value.
-  ReadApps();
-}
-
-bool KioskAppLocalSettings::IsEligibleAutoLaunchAppId(
-    const base::Value& value) const {
-  if (apps_.Find(value) != apps_.end())
-    return true;
-
-  // Empty string means no auto launch app and considered as an acceptable
-  // value for auto launch setting.
-  const base::StringValue empty("");
-  return value.Equals(&empty);
-}
-
-const base::Value* KioskAppLocalSettings::Get(const std::string& path) const {
-  DCHECK(HandlesSetting(path));
-
-  if (path == kKioskApps)
-    return &apps_;
-
-  if (path == kKioskAutoLaunch ||
-      path == kKioskDisableBailoutShortcut) {
-    PrefService* local_state = g_browser_process->local_state();
-    const base::DictionaryValue* dict =
-        local_state->GetDictionary(KioskAppManager::kKioskDictionaryName);
-
-    const base::Value* value;
-    if (dict->Get(path.substr(kKioskAppSettingsPrefixLength), &value))
-      return value;
-  }
-
-  if (path == kKioskAutoLaunch)
-    return &default_auto_launch_;
-  if (path == kKioskDisableBailoutShortcut)
-    return &default_disable_bailout_shortcut_;
-
-  NOTREACHED() << "Try to get unknown kiosk app setting " << path;
-  return NULL;
-}
-
-CrosSettingsProvider::TrustedStatus KioskAppLocalSettings::PrepareTrustedValues(
-    const base::Closure& callback) {
-  return TRUSTED;
-}
-
-bool KioskAppLocalSettings::HandlesSetting(const std::string& path) const {
-  return StartsWithASCII(path, kKioskAppSettingsPrefix, true);
-}
-
-void KioskAppLocalSettings::DoSet(const std::string& path,
-                                  const base::Value& in_value) {
-  if (path == kKioskApps) {
-    WriteApps(in_value);
-  } else if (path == kKioskAutoLaunch ||
-             path == kKioskDisableBailoutShortcut) {
-    if (path == kKioskAutoLaunch && !IsEligibleAutoLaunchAppId(in_value))
-      return;
-
-    PrefService* local_state = g_browser_process->local_state();
-    DictionaryPrefUpdate dict_update(local_state,
-                                     KioskAppManager::kKioskDictionaryName);
-    dict_update->Set(path.substr(kKioskAppSettingsPrefixLength),
-                     in_value.DeepCopy());
-  } else {
-    NOTREACHED() << "Try to set unknown kiosk app setting " << path;
-    return;
-  }
-
-  NotifyObservers(path);
-}
-
-}  // namespace chromeos