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// 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/base/locale_util.h"
#include <vector>
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chromeos/input_method/input_method_util.h"
#include "content/public/browser/browser_thread.h"
#include "ui/base/ime/chromeos/input_method_manager.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/platform_font_pango.h"
namespace chromeos {
namespace {
struct SwitchLanguageData {
SwitchLanguageData(const std::string& locale,
const bool enable_locale_keyboard_layouts,
const bool login_layouts_only,
const locale_util::SwitchLanguageCallback& callback)
: callback(callback),
result(locale, std::string(), false),
enable_locale_keyboard_layouts(enable_locale_keyboard_layouts),
login_layouts_only(login_layouts_only) {}
const locale_util::SwitchLanguageCallback callback;
locale_util::LanguageSwitchResult result;
const bool enable_locale_keyboard_layouts;
const bool login_layouts_only;
};
// Runs on SequencedWorkerPool thread under PostTaskAndReply().
// So data is owned by "Reply" part of PostTaskAndReply() process.
void SwitchLanguageDoReloadLocale(SwitchLanguageData* data) {
DCHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
data->result.loaded_locale =
ResourceBundle::GetSharedInstance().ReloadLocaleResources(
data->result.requested_locale);
data->result.success = !data->result.loaded_locale.empty();
ResourceBundle::GetSharedInstance().ReloadFonts();
}
// Callback after SwitchLanguageDoReloadLocale() back in UI thread.
void FinishSwitchLanguage(scoped_ptr<SwitchLanguageData> data) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
if (data->result.success) {
g_browser_process->SetApplicationLocale(data->result.loaded_locale);
if (data->enable_locale_keyboard_layouts) {
input_method::InputMethodManager* manager =
input_method::InputMethodManager::Get();
scoped_refptr<input_method::InputMethodManager::State> ime_state =
manager->GetActiveIMEState();
if (data->login_layouts_only) {
// Enable the hardware keyboard layouts and locale-specific layouts
// suitable for use on the login screen. This will also switch to the
// first hardware keyboard layout since the input method currently in
// use may not be supported by the new locale.
ime_state->EnableLoginLayouts(
data->result.loaded_locale,
manager->GetInputMethodUtil()->GetHardwareLoginInputMethodIds());
} else {
// Enable all hardware keyboard layouts. This will also switch to the
// first hardware keyboard layout.
ime_state->ReplaceEnabledInputMethods(
manager->GetInputMethodUtil()->GetHardwareInputMethodIds());
// Enable all locale-specific layouts.
std::vector<std::string> input_methods;
manager->GetInputMethodUtil()->GetInputMethodIdsFromLanguageCode(
data->result.loaded_locale,
input_method::kKeyboardLayoutsOnly,
&input_methods);
for (std::vector<std::string>::const_iterator it =
input_methods.begin(); it != input_methods.end(); ++it) {
ime_state->EnableInputMethod(*it);
}
}
}
}
gfx::PlatformFontPango::ReloadDefaultFont();
if (!data->callback.is_null())
data->callback.Run(data->result);
}
} // namespace
namespace locale_util {
LanguageSwitchResult::LanguageSwitchResult(const std::string& requested_locale,
const std::string& loaded_locale,
bool success)
: requested_locale(requested_locale),
loaded_locale(loaded_locale),
success(success) {
}
void SwitchLanguage(const std::string& locale,
const bool enable_locale_keyboard_layouts,
const bool login_layouts_only,
const SwitchLanguageCallback& callback) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
scoped_ptr<SwitchLanguageData> data(new SwitchLanguageData(
locale, enable_locale_keyboard_layouts, login_layouts_only, callback));
base::Closure reloader(
base::Bind(&SwitchLanguageDoReloadLocale, base::Unretained(data.get())));
content::BrowserThread::PostBlockingPoolTaskAndReply(
FROM_HERE,
reloader,
base::Bind(&FinishSwitchLanguage, base::Passed(data.Pass())));
}
} // namespace locale_util
} // namespace chromeos
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