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// Copyright 2018 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 "extensions/renderer/i18n_hooks_delegate.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_thread.h"
#include "extensions/common/extension.h"
#include "extensions/renderer/bindings/api_signature.h"
#include "extensions/renderer/bindings/js_runner.h"
#include "extensions/renderer/get_script_context.h"
#include "extensions/renderer/i18n_hooks_util.h"
#include "extensions/renderer/script_context.h"
#include "gin/converter.h"
namespace extensions {
namespace {
constexpr char kGetMessage[] = "i18n.getMessage";
constexpr char kGetUILanguage[] = "i18n.getUILanguage";
constexpr char kDetectLanguage[] = "i18n.detectLanguage";
} // namespace
using RequestResult = APIBindingHooks::RequestResult;
I18nHooksDelegate::I18nHooksDelegate() {}
I18nHooksDelegate::~I18nHooksDelegate() = default;
RequestResult I18nHooksDelegate::HandleRequest(
const std::string& method_name,
const APISignature* signature,
v8::Local<v8::Context> context,
std::vector<v8::Local<v8::Value>>* arguments,
const APITypeReferenceMap& refs) {
using Handler = RequestResult (I18nHooksDelegate::*)(
ScriptContext*, const std::vector<v8::Local<v8::Value>>&);
static const struct {
Handler handler;
base::StringPiece method;
} kHandlers[] = {
{&I18nHooksDelegate::HandleGetMessage, kGetMessage},
{&I18nHooksDelegate::HandleGetUILanguage, kGetUILanguage},
{&I18nHooksDelegate::HandleDetectLanguage, kDetectLanguage},
};
ScriptContext* script_context = GetScriptContextFromV8ContextChecked(context);
Handler handler = nullptr;
for (const auto& handler_entry : kHandlers) {
if (handler_entry.method == method_name) {
handler = handler_entry.handler;
break;
}
}
if (!handler)
return RequestResult(RequestResult::NOT_HANDLED);
std::string error;
std::vector<v8::Local<v8::Value>> parsed_arguments;
if (!signature->ParseArgumentsToV8(context, *arguments, refs,
&parsed_arguments, &error)) {
RequestResult result(RequestResult::INVALID_INVOCATION);
result.error = std::move(error);
return result;
}
return (this->*handler)(script_context, parsed_arguments);
}
RequestResult I18nHooksDelegate::HandleGetMessage(
ScriptContext* script_context,
const std::vector<v8::Local<v8::Value>>& parsed_arguments) {
DCHECK(script_context->extension());
DCHECK(parsed_arguments[0]->IsString());
v8::Local<v8::Value> message = i18n_hooks::GetI18nMessage(
gin::V8ToString(parsed_arguments[0]), script_context->extension()->id(),
parsed_arguments[1], script_context->GetRenderFrame(),
script_context->v8_context());
RequestResult result(RequestResult::HANDLED);
result.return_value = message;
return result;
}
RequestResult I18nHooksDelegate::HandleGetUILanguage(
ScriptContext* script_context,
const std::vector<v8::Local<v8::Value>>& parsed_arguments) {
RequestResult result(RequestResult::HANDLED);
result.return_value = gin::StringToSymbol(
script_context->isolate(), content::RenderThread::Get()->GetLocale());
return result;
}
RequestResult I18nHooksDelegate::HandleDetectLanguage(
ScriptContext* script_context,
const std::vector<v8::Local<v8::Value>>& parsed_arguments) {
DCHECK(parsed_arguments[0]->IsString());
DCHECK(parsed_arguments[1]->IsFunction());
v8::Local<v8::Context> v8_context = script_context->v8_context();
v8::Local<v8::Value> detected_languages = i18n_hooks::DetectTextLanguage(
v8_context, gin::V8ToString(parsed_arguments[0]));
// NOTE(devlin): The JS bindings make this callback asynchronous through a
// setTimeout, but it shouldn't be necessary.
v8::Local<v8::Value> callback_args[] = {detected_languages};
JSRunner::Get(v8_context)
->RunJSFunction(parsed_arguments[1].As<v8::Function>(),
script_context->v8_context(), arraysize(callback_args),
callback_args);
return RequestResult(RequestResult::HANDLED);
}
} // namespace extensions
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