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// Copyright (c) 2011 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/locale_change_guard.h"
#include "app/l10n_util.h"
#include "base/utf_string_conversions.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chromeos/notifications/system_notification.h"
#include "chrome/browser/metrics/user_metrics.h"
#include "chrome/browser/notifications/notification_delegate.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/common/pref_names.h"
#include "grit/app_resources.h"
#include "grit/generated_resources.h"
namespace {
base::LazyInstance<chromeos::LocaleChangeGuard> g_locale_change_guard(
base::LINKER_INITIALIZED);
} // namespace
namespace chromeos {
class LocaleChangeGuard::Delegate : public NotificationDelegate {
public:
explicit Delegate(chromeos::LocaleChangeGuard* master) : master_(master) {}
void Close(bool by_user);
void Display() {}
void Error() {}
void Click() {}
std::string id() const;
private:
chromeos::LocaleChangeGuard* master_;
DISALLOW_COPY_AND_ASSIGN(Delegate);
};
LocaleChangeGuard::LocaleChangeGuard()
: profile_id_(Profile::InvalidProfileId),
tab_contents_(NULL),
note_(NULL),
reverted_(false) {
}
void LocaleChangeGuard::RevertLocaleChange(const ListValue* list) {
if (note_ == NULL ||
tab_contents_ == NULL ||
from_locale_.empty() ||
to_locale_.empty()) {
NOTREACHED();
return;
}
if (reverted_)
return;
PrefService* prefs = tab_contents_->profile()->GetPrefs();
if (prefs == NULL)
return;
reverted_ = true;
UserMetrics::RecordAction(UserMetricsAction("LanguageChange_Revert"));
tab_contents_->profile()->ChangeApplicationLocale(from_locale_, true);
prefs->SetString(prefs::kApplicationLocaleBackup, from_locale_);
prefs->ClearPref(prefs::kApplicationLocaleAccepted);
prefs->ScheduleSavePersistentPrefs();
Browser* browser = Browser::GetBrowserForController(
&tab_contents_->controller(), NULL);
if (browser)
browser->ExecuteCommand(IDC_EXIT);
}
void LocaleChangeGuard::CheckLocaleChange(TabContents* tab_contents) {
// We want notification to be shown no more than once per session.
if (note_ != NULL)
return;
DCHECK(note_ == NULL && tab_contents_ == NULL);
DCHECK(from_locale_.empty() && to_locale_.empty());
// We check profile Id because:
// (1) we want to exit fast in common case when nothing should be done.
// (2) on ChromeOS this guard may be invoked for a dummy profile first time.
ProfileId cur_profile_id = tab_contents->profile()->GetRuntimeId();
if (cur_profile_id == profile_id_) {
// We have already checked this profile, exiting fast.
return;
}
profile_id_ = cur_profile_id;
std::string cur_locale = g_browser_process->GetApplicationLocale();
if (cur_locale.empty()) {
NOTREACHED();
return;
}
PrefService* prefs = tab_contents->profile()->GetPrefs();
if (prefs == NULL)
return;
std::string to_locale = prefs->GetString(prefs::kApplicationLocaleOverride);
if (!to_locale.empty()) {
DCHECK(to_locale == cur_locale);
return;
}
to_locale = prefs->GetString(prefs::kApplicationLocale);
if (to_locale != cur_locale) {
// This conditional branch can occur in case kApplicationLocale
// preference was modified by synchronization.
return;
}
std::string from_locale = prefs->GetString(prefs::kApplicationLocaleBackup);
if (from_locale.empty() || from_locale == to_locale) {
// No locale change was detected, just exit.
return;
}
// Locale change detected, showing notification.
from_locale_ = from_locale;
to_locale_ = to_locale;
tab_contents_ = tab_contents;
note_.reset(new chromeos::SystemNotification(
tab_contents->profile(),
new Delegate(this),
IDR_DEFAULT_FAVICON,
l10n_util::GetStringUTF16(
IDS_OPTIONS_SETTINGS_SECTION_TITLE_LANGUAGE)));
note_->Show(
l10n_util::GetStringFUTF16(
IDS_LOCALE_CHANGE_MESSAGE,
l10n_util::GetDisplayNameForLocale(from_locale_, to_locale_, true),
l10n_util::GetDisplayNameForLocale(to_locale_, to_locale_, true)),
l10n_util::GetStringUTF16(IDS_LOCALE_CHANGE_REVERT_MESSAGE),
NewCallback(this, &LocaleChangeGuard::RevertLocaleChange),
true, // urgent
false); // non-sticky
}
void LocaleChangeGuard::AcceptLocaleChange() {
if (note_ == NULL ||
tab_contents_ == NULL ||
from_locale_.empty() ||
to_locale_.empty()) {
NOTREACHED();
return;
}
// Check whether locale has been reverted or changed.
// If not: mark current locale as accepted.
if (reverted_)
return;
PrefService* prefs = tab_contents_->profile()->GetPrefs();
if (prefs == NULL)
return;
std::string override_locale =
prefs->GetString(prefs::kApplicationLocaleOverride);
if (!override_locale.empty())
return;
if (prefs->GetString(prefs::kApplicationLocale) != to_locale_)
return;
UserMetrics::RecordAction(UserMetricsAction("LanguageChange_Accept"));
prefs->SetString(prefs::kApplicationLocaleBackup, to_locale_);
prefs->SetString(prefs::kApplicationLocaleAccepted, to_locale_);
prefs->ScheduleSavePersistentPrefs();
}
// static
void LocaleChangeGuard::Check(TabContents* tab_contents) {
g_locale_change_guard.Get().CheckLocaleChange(tab_contents);
}
void LocaleChangeGuard::Delegate::Close(bool by_user) {
if (by_user)
master_->AcceptLocaleChange();
}
std::string LocaleChangeGuard::Delegate::id() const {
// Arbitrary unique Id.
return "8c386938-1e3f-11e0-ac7b-18a90520e2e5";
}
} // namespace chromeos
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