Upstream chrome://flags & chrome://ui-alternatives iOS WebUI.

ios/chrome/browser/ui/webui/flags_ui.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 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.
 
-#include "chrome/browser/ui/webui/flags_ui.h"
+#include "ios/chrome/browser/ui/webui/flags_ui.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/bind_helpers.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
-#include "chrome/browser/about_flags.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/lifetime/application_lifetime.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/common/channel_info.h"
-#include "chrome/common/pref_names.h"
-#include "chrome/common/url_constants.h"
 #include "components/flags_ui/flags_ui_constants.h"
 #include "components/flags_ui/flags_ui_pref_names.h"
 #include "components/flags_ui/pref_service_flags_storage.h"
 #include "components/version_info/version_info.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_ui.h"
-#include "content/public/browser/web_ui_data_source.h"
-#include "content/public/browser/web_ui_message_handler.h"
 #include "grit/components_chromium_strings.h"
 #include "grit/components_google_chrome_strings.h"
 #include "grit/components_resources.h"
 #include "grit/components_scaled_resources.h"
 #include "grit/components_strings.h"
+#include "ios/chrome/browser/about_flags.h"
+#include "ios/chrome/browser/application_context.h"
+#include "ios/chrome/browser/chrome_url_constants.h"
+#include "ios/public/provider/chrome/browser/browser_state/chrome_browser_state.h"
+#include "ios/public/provider/web/web_ui_ios.h"
+#include "ios/public/provider/web/web_ui_ios_message_handler.h"
+#include "ios/web/public/web_ui_ios_data_source.h"
+#include "ios/web/public/web_ui_ios_data_source.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
-#if defined(OS_CHROMEOS)
-#include "base/sys_info.h"
-#include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos.h"
-#include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.h"
-#include "chrome/browser/chromeos/settings/cros_settings.h"
-#include "chrome/browser/chromeos/settings/owner_flags_storage.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
-#include "chromeos/dbus/session_manager_client.h"
-#include "components/pref_registry/pref_registry_syncable.h"
-#include "components/user_manager/user_manager.h"
-#endif
-
-using content::WebContents;
-using content::WebUIMessageHandler;
-
 namespace {
 
-content::WebUIDataSource* CreateFlagsUIHTMLSource() {
-  content::WebUIDataSource* source =
-      content::WebUIDataSource::Create(chrome::kChromeUIFlagsHost);
+web::WebUIIOSDataSource* CreateFlagsUIHTMLSource(
+    BaseFlagsUI::FlagsUIKind flags_ui_kind) {
+  web::WebUIIOSDataSource* source = web::WebUIIOSDataSource::Create(
+      flags_ui_kind == BaseFlagsUI::FLAGS_UI_APPLE ? kChromeUIAppleFlagsHost
+                                                   : kChromeUIFlagsHost);
 
-  source->AddLocalizedString(flags_ui::kFlagsLongTitle,
-                             IDS_FLAGS_UI_LONG_TITLE);
-  source->AddLocalizedString(flags_ui::kFlagsTableTitle,
-                             IDS_FLAGS_UI_TABLE_TITLE);
+  if (flags_ui_kind == BaseFlagsUI::FLAGS_UI_APPLE) {
+    source->AddLocalizedString(flags_ui::kFlagsTableTitle,
+                               IDS_FLAGS_UI_ALTERNATIVES_UI_TABLE_TITLE);
+    source->AddLocalizedString(
+        flags_ui::kFlagsNoExperimentsAvailable,
+        IDS_FLAGS_UI_ALTERNATIVES_UI_NO_EXPERIMENTS_AVAILABLE);
+  } else {
+    source->AddLocalizedString(flags_ui::kFlagsLongTitle,
+                               IDS_FLAGS_UI_LONG_TITLE);
+    source->AddLocalizedString(flags_ui::kFlagsTableTitle,
+                               IDS_FLAGS_UI_TABLE_TITLE);
+  }
   source->AddLocalizedString(flags_ui::kFlagsWarningHeader,
                              IDS_FLAGS_UI_WARNING_HEADER);
   source->AddLocalizedString(flags_ui::kFlagsBlurb, IDS_FLAGS_UI_WARNING_TEXT);
-  source->AddLocalizedString(flags_ui::kChannelPromoBeta,
-                             IDS_FLAGS_UI_PROMOTE_BETA_CHANNEL);
-  source->AddLocalizedString(flags_ui::kChannelPromoDev,
-                             IDS_FLAGS_UI_PROMOTE_DEV_CHANNEL);
   source->AddLocalizedString(flags_ui::kFlagsUnsupportedTableTitle,
                              IDS_FLAGS_UI_UNSUPPORTED_TABLE_TITLE);
   source->AddLocalizedString(flags_ui::kFlagsNotSupported,
                              IDS_FLAGS_UI_NOT_AVAILABLE);
   source->AddLocalizedString(flags_ui::kFlagsRestartNotice,
                              IDS_FLAGS_UI_RELAUNCH_NOTICE);
   source->AddLocalizedString(flags_ui::kFlagsRestartButton,
                              IDS_FLAGS_UI_RELAUNCH_BUTTON);
   source->AddLocalizedString(flags_ui::kResetAllButton,
                              IDS_FLAGS_UI_RESET_ALL_BUTTON);
   source->AddLocalizedString(flags_ui::kDisable, IDS_FLAGS_UI_DISABLE);
   source->AddLocalizedString(flags_ui::kEnable, IDS_FLAGS_UI_ENABLE);
 
-#if defined(OS_CHROMEOS)
-  if (!user_manager::UserManager::Get()->IsCurrentUserOwner() &&
-      base::SysInfo::IsRunningOnChromeOS()) {
-    // Set the strings to show which user can actually change the flags.
-    std::string owner;
-    chromeos::CrosSettings::Get()->GetString(chromeos::kDeviceOwner, &owner);
-    source->AddString(flags_ui::kOwnerWarning,
-                      l10n_util::GetStringFUTF16(IDS_FLAGS_UI_SYSTEM_OWNER_ONLY,
-                                                 base::UTF8ToUTF16(owner)));
-  } else {
-    // The warning will be only shown on ChromeOS, when the current user is not
-    // the owner.
-    source->AddString(flags_ui::kOwnerWarning, base::string16());
-  }
-#endif
-
   source->SetJsonPath("strings.js");
   source->AddResourcePath(flags_ui::kFlagsJS, IDR_FLAGS_UI_FLAGS_JS);
-  source->SetDefaultResource(IDR_FLAGS_UI_FLAGS_HTML);
+  source->SetDefaultResource(flags_ui_kind == BaseFlagsUI::FLAGS_UI_APPLE
+                                 ? IDR_APPLE_FLAGS_HTML
+                                 : IDR_FLAGS_UI_FLAGS_HTML);
   return source;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // FlagsDOMHandler
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 // The handler for Javascript messages for the about:flags page.
-class FlagsDOMHandler : public WebUIMessageHandler {
+class FlagsDOMHandler : public web::WebUIIOSMessageHandler {
  public:
-  FlagsDOMHandler() : access_(flags_ui::kGeneralAccessFlagsOnly),
-                      experimental_features_requested_(false) {
-  }
+  FlagsDOMHandler()
+      : access_(flags_ui::kGeneralAccessFlagsOnly),
+        experimental_features_requested_(false) {}
   ~FlagsDOMHandler() override {}
 
   // Initializes the DOM handler with the provided flags storage and flags
   // access. If there were flags experiments requested from javascript before
   // this was called, it calls |HandleRequestExperimentalFeatures| again.
-  void Init(flags_ui::FlagsStorage* flags_storage,
-            flags_ui::FlagAccess access);
+  void Init(flags_ui::FlagsStorage* flags_storage, flags_ui::FlagAccess access);
 
   // WebUIMessageHandler implementation.
   void RegisterMessages() override;
 
   // Callback for the "requestExperimentFeatures" message.
   void HandleRequestExperimentalFeatures(const base::ListValue* args);
 
   // Callback for the "enableExperimentalFeature" message.
   void HandleEnableExperimentalFeatureMessage(const base::ListValue* args);
 
@@ skipping 44 matching lines @@
   experimental_features_requested_ = true;
   // Bail out if the handler hasn't been initialized yet. The request will be
   // handled after the initialization.
   if (!flags_storage_)
     return;
 
   base::DictionaryValue results;
 
   scoped_ptr<base::ListValue> supported_features(new base::ListValue);
   scoped_ptr<base::ListValue> unsupported_features(new base::ListValue);
-  about_flags::GetFlagFeatureEntries(flags_storage_.get(),
-                                     access_,
-                                     supported_features.get(),
-                                     unsupported_features.get());
+  GetFlagFeatureEntries(flags_storage_.get(), access_, supported_features.get(),
+                        unsupported_features.get());
   results.Set(flags_ui::kSupportedFeatures, supported_features.release());
   results.Set(flags_ui::kUnsupportedFeatures, unsupported_features.release());
-  results.SetBoolean(flags_ui::kNeedsRestart,
-                     about_flags::IsRestartNeededToCommitChanges());
+  // Cannot restart the browser on iOS.
+  results.SetBoolean(flags_ui::kNeedsRestart, false);
   results.SetBoolean(flags_ui::kShowOwnerWarning,
                      access_ == flags_ui::kGeneralAccessFlagsOnly);
 
-#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
-  version_info::Channel channel = chrome::GetChannel();
-  results.SetBoolean(flags_ui::kShowBetaChannelPromotion,
-                     channel == version_info::Channel::STABLE);
-  results.SetBoolean(flags_ui::kShowDevChannelPromotion,
-                     channel == version_info::Channel::BETA);
-#else
   results.SetBoolean(flags_ui::kShowBetaChannelPromotion, false);
   results.SetBoolean(flags_ui::kShowDevChannelPromotion, false);
-#endif
   web_ui()->CallJavascriptFunction(flags_ui::kReturnExperimentalFeatures,
                                    results);
 }
 
 void FlagsDOMHandler::HandleEnableExperimentalFeatureMessage(
     const base::ListValue* args) {
   DCHECK(flags_storage_);
   DCHECK_EQ(2u, args->GetSize());
   if (args->GetSize() != 2)
     return;
 
   std::string entry_internal_name;
   std::string enable_str;
   if (!args->GetString(0, &entry_internal_name) ||
       !args->GetString(1, &enable_str))
     return;
 
-  about_flags::SetFeatureEntryEnabled(flags_storage_.get(), entry_internal_name,
-                                      enable_str == "true");
+  SetFeatureEntryEnabled(flags_storage_.get(), entry_internal_name,
+                         enable_str == "true");
 }
 
 void FlagsDOMHandler::HandleRestartBrowser(const base::ListValue* args) {
-  DCHECK(flags_storage_);
-#if defined(OS_CHROMEOS)
-  // On ChromeOS be less intrusive and restart inside the user session after
-  // we apply the newly selected flags.
-  base::CommandLine user_flags(base::CommandLine::NO_PROGRAM);
-  about_flags::ConvertFlagsToSwitches(flags_storage_.get(),
-                                      &user_flags,
-                                      flags_ui::kAddSentinels);
-  base::CommandLine::StringVector flags;
-  // argv[0] is the program name |base::CommandLine::NO_PROGRAM|.
-  flags.assign(user_flags.argv().begin() + 1, user_flags.argv().end());
-  VLOG(1) << "Restarting to apply per-session flags...";
-  chromeos::DBusThreadManager::Get()
-      ->GetSessionManagerClient()
-      ->SetFlagsForUser(
-          user_manager::UserManager::Get()->GetActiveUser()->email(), flags);
-#endif
-  chrome::AttemptRestart();
+  NOTREACHED();
 }
 
 void FlagsDOMHandler::HandleResetAllFlags(const base::ListValue* args) {
   DCHECK(flags_storage_);
-  about_flags::ResetAllFlags(flags_storage_.get());
+  ResetAllFlags(flags_storage_.get());
 }
 
+}  // namespace
 
-#if defined(OS_CHROMEOS)
-// On ChromeOS verifying if the owner is signed in is async operation and only
-// after finishing it the UI can be properly populated. This function is the
-// callback for whether the owner is signed in. It will respectively pick the
-// proper PrefService for the flags interface.
-void FinishInitialization(base::WeakPtr<FlagsUI> flags_ui,
-                          Profile* profile,
-                          FlagsDOMHandler* dom_handler,
-                          bool current_user_is_owner) {
-  // If the flags_ui has gone away, there's nothing to do.
-  if (!flags_ui)
-    return;
+///////////////////////////////////////////////////////////////////////////////
+//
+// BaseFlagsUI
+//
+///////////////////////////////////////////////////////////////////////////////
 
-  // On Chrome OS the owner can set system wide flags and other users can only
-  // set flags for their own session.
-  // Note that |dom_handler| is owned by the web ui that owns |flags_ui|, so
-  // it is still alive if |flags_ui| is.
-  if (current_user_is_owner) {
-    chromeos::OwnerSettingsServiceChromeOS* service =
-        chromeos::OwnerSettingsServiceChromeOSFactory::GetForBrowserContext(
-            profile);
-    dom_handler->Init(new chromeos::about_flags::OwnerFlagsStorage(
-                          profile->GetPrefs(), service),
-                      flags_ui::kOwnerAccessToFlags);
-  } else {
-    dom_handler->Init(
-        new flags_ui::PrefServiceFlagsStorage(profile->GetPrefs()),
-        flags_ui::kGeneralAccessFlagsOnly);
-  }
+BaseFlagsUI::BaseFlagsUI(web::WebUIIOS* web_ui, FlagsUIKind flags_ui_kind)
+    : web::WebUIIOSController(web_ui), weak_factory_(this) {
+  Initialize(web_ui, flags_ui_kind);
 }
-#endif
 
-}  // namespace
+void BaseFlagsUI::Initialize(web::WebUIIOS* web_ui, FlagsUIKind flags_ui_kind) {
+  FlagsDOMHandler* handler = new FlagsDOMHandler();
+  web_ui->AddMessageHandler(handler);
+
+  flags_ui::FlagAccess flag_access = flags_ui::kOwnerAccessToFlags;
+  if (flags_ui_kind == FLAGS_UI_APPLE)
+    flag_access = flags_ui::kAppleReviewAccessToFlags;
+  handler->Init(new flags_ui::PrefServiceFlagsStorage(
+                    GetApplicationContext()->GetLocalState()),
+                flag_access);
+
+  // Set up the about:flags source.
+  web::WebUIIOSDataSource::Add(ios::ChromeBrowserState::FromWebUIIOS(web_ui),
+                               CreateFlagsUIHTMLSource(flags_ui_kind));
+}
+
+BaseFlagsUI::~BaseFlagsUI() {}
+
+// static
+base::RefCountedMemory* BaseFlagsUI::GetFaviconResourceBytes(
+    ui::ScaleFactor scale_factor) {
+  return ResourceBundle::GetSharedInstance().LoadDataResourceBytesForScale(
+      IDR_FLAGS_FAVICON, scale_factor);
+}
 
 ///////////////////////////////////////////////////////////////////////////////
 //
 // FlagsUI
 //
 ///////////////////////////////////////////////////////////////////////////////
 
-FlagsUI::FlagsUI(content::WebUI* web_ui)
-    : WebUIController(web_ui),
-      weak_factory_(this) {
-  Profile* profile = Profile::FromWebUI(web_ui);
+FlagsUI::FlagsUI(web::WebUIIOS* web_ui)
+    : BaseFlagsUI(web_ui, BaseFlagsUI::FLAGS_UI_GENERIC) {}
 
-  FlagsDOMHandler* handler = new FlagsDOMHandler();
-  web_ui->AddMessageHandler(handler);
+FlagsUI::~FlagsUI() {}
 
-#if defined(OS_CHROMEOS)
-  if (base::SysInfo::IsRunningOnChromeOS() &&
-      chromeos::OwnerSettingsServiceChromeOSFactory::GetForBrowserContext(
-          profile)) {
-    chromeos::OwnerSettingsServiceChromeOS* service =
-        chromeos::OwnerSettingsServiceChromeOSFactory::GetForBrowserContext(
-            profile);
-    service->IsOwnerAsync(base::Bind(
-        &FinishInitialization, weak_factory_.GetWeakPtr(), profile, handler));
-  } else {
-    FinishInitialization(weak_factory_.GetWeakPtr(), profile, handler,
-                         false /* current_user_is_owner */);
-  }
-#else
-  handler->Init(
-      new flags_ui::PrefServiceFlagsStorage(g_browser_process->local_state()),
-      flags_ui::kOwnerAccessToFlags);
-#endif
+///////////////////////////////////////////////////////////////////////////////
+//
+// AppleFlagsUI
+//
+///////////////////////////////////////////////////////////////////////////////
 
-  // Set up the about:flags source.
-  content::WebUIDataSource::Add(profile, CreateFlagsUIHTMLSource());
-}
+AppleFlagsUI::AppleFlagsUI(web::WebUIIOS* web_ui)
+    : BaseFlagsUI(web_ui, BaseFlagsUI::FLAGS_UI_APPLE) {}
 
-FlagsUI::~FlagsUI() {
-}
-
-// static
-base::RefCountedMemory* FlagsUI::GetFaviconResourceBytes(
-      ui::ScaleFactor scale_factor) {
-  return ResourceBundle::GetSharedInstance().
-      LoadDataResourceBytesForScale(IDR_FLAGS_FAVICON, scale_factor);
-}
+AppleFlagsUI::~AppleFlagsUI() {}