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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/extensions/api/accessibility_private_hooks_delegate.h"
#include "base/i18n/unicodestring.h"
#include "base/strings/utf_string_conversions.h"
#include "extensions/common/extension.h"
#include "extensions/renderer/bindings/api_signature.h"
#include "extensions/renderer/get_script_context.h"
#include "extensions/renderer/script_context.h"
#include "gin/converter.h"
#include "ui/base/l10n/l10n_util.h"
namespace extensions {
namespace {
constexpr char kGetDisplayNameForLocale[] =
"accessibilityPrivate.getDisplayNameForLocale";
constexpr char kUndeterminedLocale[] = "und";
} // namespace
using RequestResult = APIBindingHooks::RequestResult;
AccessibilityPrivateHooksDelegate::AccessibilityPrivateHooksDelegate() =
default;
AccessibilityPrivateHooksDelegate::~AccessibilityPrivateHooksDelegate() =
default;
RequestResult AccessibilityPrivateHooksDelegate::HandleRequest(
const std::string& method_name,
const APISignature* signature,
v8::Local<v8::Context> context,
v8::LocalVector<v8::Value>* arguments,
const APITypeReferenceMap& refs) {
// Error checks.
// Ensure we would like to call the GetDisplayNameForLocale function.
if (method_name != kGetDisplayNameForLocale)
return RequestResult(RequestResult::NOT_HANDLED);
// Ensure arguments are successfully parsed and converted.
APISignature::V8ParseResult parse_result =
signature->ParseArgumentsToV8(context, *arguments, refs);
if (!parse_result.succeeded()) {
RequestResult result(RequestResult::INVALID_INVOCATION);
result.error = std::move(*parse_result.error);
return result;
}
return HandleGetDisplayNameForLocale(
GetScriptContextFromV8ContextChecked(context), *parse_result.arguments);
}
RequestResult AccessibilityPrivateHooksDelegate::HandleGetDisplayNameForLocale(
ScriptContext* script_context,
const v8::LocalVector<v8::Value>& parsed_arguments) {
DCHECK(script_context->extension());
DCHECK_EQ(2u, parsed_arguments.size());
DCHECK(parsed_arguments[0]->IsString());
DCHECK(parsed_arguments[1]->IsString());
const std::string locale =
gin::V8ToString(script_context->isolate(), parsed_arguments[0]);
const std::string display_locale =
gin::V8ToString(script_context->isolate(), parsed_arguments[1]);
bool found_valid_result = false;
std::string locale_result;
if (l10n_util::IsValidLocaleSyntax(locale) &&
l10n_util::IsValidLocaleSyntax(display_locale)) {
locale_result = base::UTF16ToUTF8(l10n_util::GetDisplayNameForLocale(
locale, display_locale, true /* is_ui */));
// Check for valid locales before getting the display name.
// The ICU Locale class returns "und" for undetermined locales, and
// returns the locale string directly if it has no translation.
// Treat these cases as invalid results.
found_valid_result =
locale_result != kUndeterminedLocale && locale_result != locale;
}
// We return an empty string to communicate that we could not determine
// the display locale.
if (!found_valid_result)
locale_result = std::string();
RequestResult result(RequestResult::HANDLED);
result.return_value =
gin::StringToV8(script_context->isolate(), locale_result);
return result;
}
} // namespace extensions
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