root/chrome/browser/extensions/chrome_extensions_browser_client.cc

DEFINITIONS

1. IsShuttingDown
2. AreExtensionsDisabled
3. IsValidContext
4. IsSameContext
5. HasOffTheRecordContext
6. GetOffTheRecordContext
7. GetOriginalContext
8. IsGuestSession
9. IsExtensionIncognitoEnabled
10. CanExtensionCrossIncognito
11. GetPrefServiceForContext
12. GetEarlyExtensionPrefsObservers
13. DeferLoadingBackgroundHosts
14. IsBackgroundPageAllowed
15. CreateExtensionHostDelegate
16. DidVersionUpdate
17. CreateAppSorting
18. IsRunningInForcedAppMode
19. GetApiActivityMonitor
20. GetExtensionSystemFactory
21. RegisterExtensionFunctions

// 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/extensions/chrome_extensions_browser_client.h"

#include "apps/common/api/generated_api.h"
#include "base/command_line.h"
#include "base/version.h"
#include "chrome/browser/app_mode/app_mode_utils.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/activity_log/activity_log.h"
#include "chrome/browser/extensions/api/preference/chrome_direct_setting.h"
#include "chrome/browser/extensions/api/preference/preference_api.h"
#include "chrome/browser/extensions/api/web_request/web_request_api.h"
#include "chrome/browser/extensions/chrome_app_sorting.h"
#include "chrome/browser/extensions/chrome_extension_host_delegate.h"
#include "chrome/browser/extensions/extension_system_factory.h"
#include "chrome/browser/extensions/extension_util.h"
#include "chrome/browser/external_protocol/external_protocol_handler.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/chrome_version_info.h"
#include "chrome/common/extensions/api/generated_api.h"
#include "chrome/common/extensions/features/feature_channel.h"
#include "chrome/common/pref_names.h"
#include "extensions/browser/extension_function_registry.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/pref_names.h"
#include "extensions/common/api/generated_api.h"

#if defined(OS_CHROMEOS)
#include "chromeos/chromeos_switches.h"
#endif

#if defined(ENABLE_EXTENSIONS)
#include "chrome/browser/extensions/api/chrome_extensions_api_client.h"
#include "chrome/browser/extensions/api/content_settings/content_settings_service.h"
#endif

namespace extensions {

ChromeExtensionsBrowserClient::ChromeExtensionsBrowserClient() {
#if defined(ENABLE_EXTENSIONS)
  api_client_.reset(new ChromeExtensionsAPIClient);
#endif
  // Only set if it hasn't already been set (e.g. by a test).
  if (GetCurrentChannel() == GetDefaultChannel())
    SetCurrentChannel(chrome::VersionInfo::GetChannel());
}

ChromeExtensionsBrowserClient::~ChromeExtensionsBrowserClient() {}

bool ChromeExtensionsBrowserClient::IsShuttingDown() {
  return g_browser_process->IsShuttingDown();
}

bool ChromeExtensionsBrowserClient::AreExtensionsDisabled(
    const CommandLine& command_line,
    content::BrowserContext* context) {
  Profile* profile = static_cast<Profile*>(context);
  return command_line.HasSwitch(switches::kDisableExtensions) ||
      profile->GetPrefs()->GetBoolean(prefs::kDisableExtensions);
}

bool ChromeExtensionsBrowserClient::IsValidContext(
    content::BrowserContext* context) {
  Profile* profile = static_cast<Profile*>(context);
  return g_browser_process->profile_manager()->IsValidProfile(profile);
}

bool ChromeExtensionsBrowserClient::IsSameContext(
    content::BrowserContext* first,
    content::BrowserContext* second) {
  return static_cast<Profile*>(first)->IsSameProfile(
      static_cast<Profile*>(second));
}

bool ChromeExtensionsBrowserClient::HasOffTheRecordContext(
    content::BrowserContext* context) {
  return static_cast<Profile*>(context)->HasOffTheRecordProfile();
}

content::BrowserContext* ChromeExtensionsBrowserClient::GetOffTheRecordContext(
    content::BrowserContext* context) {
  return static_cast<Profile*>(context)->GetOffTheRecordProfile();
}

content::BrowserContext* ChromeExtensionsBrowserClient::GetOriginalContext(
    content::BrowserContext* context) {
  return static_cast<Profile*>(context)->GetOriginalProfile();
}

bool ChromeExtensionsBrowserClient::IsGuestSession(
    content::BrowserContext* context) const {
  return static_cast<Profile*>(context)->IsGuestSession();
}

bool ChromeExtensionsBrowserClient::IsExtensionIncognitoEnabled(
    const std::string& extension_id,
    content::BrowserContext* context) const {
  return IsGuestSession(context)
      || util::IsIncognitoEnabled(extension_id, context);
}

bool ChromeExtensionsBrowserClient::CanExtensionCrossIncognito(
    const extensions::Extension* extension,
    content::BrowserContext* context) const {
  return IsGuestSession(context)
      || util::CanCrossIncognito(extension, context);
}

PrefService* ChromeExtensionsBrowserClient::GetPrefServiceForContext(
    content::BrowserContext* context) {
  return static_cast<Profile*>(context)->GetPrefs();
}

void ChromeExtensionsBrowserClient::GetEarlyExtensionPrefsObservers(
    content::BrowserContext* context,
    std::vector<ExtensionPrefsObserver*>* observers) const {
#if defined(ENABLE_EXTENSIONS)
  observers->push_back(ContentSettingsService::Get(context));
#endif
}

bool ChromeExtensionsBrowserClient::DeferLoadingBackgroundHosts(
    content::BrowserContext* context) const {
  Profile* profile = static_cast<Profile*>(context);

  // The profile may not be valid yet if it is still being initialized.
  // In that case, defer loading, since it depends on an initialized profile.
  // http://crbug.com/222473
  if (!g_browser_process->profile_manager()->IsValidProfile(profile))
    return true;

#if defined(OS_ANDROID)
  return false;
#else
  // There are no browser windows open and the browser process was
  // started to show the app launcher.
  return chrome::GetTotalBrowserCountForProfile(profile) == 0 &&
         CommandLine::ForCurrentProcess()->HasSwitch(switches::kShowAppList);
#endif
}

bool ChromeExtensionsBrowserClient::IsBackgroundPageAllowed(
    content::BrowserContext* context) const {
  // Returns true if current session is Guest mode session and current
  // browser context is *not* off-the-record. Such context is artificial and
  // background page shouldn't be created in it.
  return !static_cast<Profile*>(context)->IsGuestSession() ||
         context->IsOffTheRecord();
}

scoped_ptr<ExtensionHostDelegate>
ChromeExtensionsBrowserClient::CreateExtensionHostDelegate() {
  return scoped_ptr<ExtensionHostDelegate>(new ChromeExtensionHostDelegate);
}

bool ChromeExtensionsBrowserClient::DidVersionUpdate(
    content::BrowserContext* context) {
  Profile* profile = static_cast<Profile*>(context);

  // Unit tests may not provide prefs; assume everything is up-to-date.
  ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(profile);
  if (!extension_prefs)
    return false;

  // If we're inside a browser test, then assume prefs are all up-to-date.
  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kTestType))
    return false;

  PrefService* pref_service = extension_prefs->pref_service();
  base::Version last_version;
  if (pref_service->HasPrefPath(pref_names::kLastChromeVersion)) {
    std::string last_version_str =
        pref_service->GetString(pref_names::kLastChromeVersion);
    last_version = base::Version(last_version_str);
  }

  chrome::VersionInfo current_version_info;
  std::string current_version = current_version_info.Version();
  pref_service->SetString(pref_names::kLastChromeVersion,
                          current_version);

  // If there was no version string in prefs, assume we're out of date.
  if (!last_version.IsValid())
    return true;

  return last_version.IsOlderThan(current_version);
}

scoped_ptr<AppSorting> ChromeExtensionsBrowserClient::CreateAppSorting() {
  return scoped_ptr<AppSorting>(new ChromeAppSorting());
}

bool ChromeExtensionsBrowserClient::IsRunningInForcedAppMode() {
  return chrome::IsRunningInForcedAppMode();
}

ApiActivityMonitor* ChromeExtensionsBrowserClient::GetApiActivityMonitor(
    content::BrowserContext* context) {
  // The ActivityLog monitors and records function calls and events.
  return ActivityLog::GetInstance(context);
}

ExtensionSystemProvider*
ChromeExtensionsBrowserClient::GetExtensionSystemFactory() {
  return ExtensionSystemFactory::GetInstance();
}

void ChromeExtensionsBrowserClient::RegisterExtensionFunctions(
    ExtensionFunctionRegistry* registry) const {
// TODO(rockot): Figure out if and why Android really needs to build
// ChromeExtensionsBrowserClient and refactor so this ifdef isn't necessary.
// See http://crbug.com/349436
#if defined(ENABLE_EXTENSIONS)
  // WebRequest.
  registry->RegisterFunction<WebRequestAddEventListener>();
  registry->RegisterFunction<WebRequestEventHandled>();

  // Preferences.
  registry->RegisterFunction<extensions::GetPreferenceFunction>();
  registry->RegisterFunction<extensions::SetPreferenceFunction>();
  registry->RegisterFunction<extensions::ClearPreferenceFunction>();

  // Direct Preference Access for Component Extensions.
  registry->RegisterFunction<
      extensions::chromedirectsetting::GetDirectSettingFunction>();
  registry->RegisterFunction<
      extensions::chromedirectsetting::SetDirectSettingFunction>();
  registry->RegisterFunction<
      extensions::chromedirectsetting::ClearDirectSettingFunction>();

  // Generated APIs from lower-level modules.
  extensions::core_api::GeneratedFunctionRegistry::RegisterAll(registry);
  apps::api::GeneratedFunctionRegistry::RegisterAll(registry);

  // Generated APIs from Chrome.
  extensions::api::GeneratedFunctionRegistry::RegisterAll(registry);
#endif
}

}  // namespace extensions