1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "extensions/renderer/i18n_custom_bindings.h"
6
7#include "base/bind.h"
8#include "content/public/renderer/render_thread.h"
9#include "content/public/renderer/render_view.h"
10#include "extensions/common/extension_messages.h"
11#include "extensions/common/message_bundle.h"
12#include "extensions/renderer/script_context.h"
13
14namespace extensions {
15
16I18NCustomBindings::I18NCustomBindings(ScriptContext* context)
17    : ObjectBackedNativeHandler(context) {
18  RouteFunction(
19      "GetL10nMessage",
20      base::Bind(&I18NCustomBindings::GetL10nMessage, base::Unretained(this)));
21  RouteFunction("GetL10nUILanguage",
22                base::Bind(&I18NCustomBindings::GetL10nUILanguage,
23                           base::Unretained(this)));
24}
25
26void I18NCustomBindings::GetL10nMessage(
27    const v8::FunctionCallbackInfo<v8::Value>& args) {
28  if (args.Length() != 3 || !args[0]->IsString()) {
29    NOTREACHED() << "Bad arguments";
30    return;
31  }
32
33  std::string extension_id;
34  if (args[2]->IsNull() || !args[2]->IsString()) {
35    return;
36  } else {
37    extension_id = *v8::String::Utf8Value(args[2]->ToString());
38    if (extension_id.empty())
39      return;
40  }
41
42  L10nMessagesMap* l10n_messages = GetL10nMessagesMap(extension_id);
43  if (!l10n_messages) {
44    // Get the current RenderView so that we can send a routed IPC message
45    // from the correct source.
46    content::RenderView* renderview = context()->GetRenderView();
47    if (!renderview)
48      return;
49
50    L10nMessagesMap messages;
51    // A sync call to load message catalogs for current extension.
52    renderview->Send(
53        new ExtensionHostMsg_GetMessageBundle(extension_id, &messages));
54
55    // Save messages we got.
56    ExtensionToL10nMessagesMap& l10n_messages_map =
57        *GetExtensionToL10nMessagesMap();
58    l10n_messages_map[extension_id] = messages;
59
60    l10n_messages = GetL10nMessagesMap(extension_id);
61  }
62
63  std::string message_name = *v8::String::Utf8Value(args[0]);
64  std::string message =
65      MessageBundle::GetL10nMessage(message_name, *l10n_messages);
66
67  v8::Isolate* isolate = args.GetIsolate();
68  std::vector<std::string> substitutions;
69  if (args[1]->IsArray()) {
70    // chrome.i18n.getMessage("message_name", ["more", "params"]);
71    v8::Local<v8::Array> placeholders = v8::Local<v8::Array>::Cast(args[1]);
72    uint32_t count = placeholders->Length();
73    if (count > 9)
74      return;
75    for (uint32_t i = 0; i < count; ++i) {
76      substitutions.push_back(
77          *v8::String::Utf8Value(
78              placeholders->Get(v8::Integer::New(isolate, i))->ToString()));
79    }
80  } else if (args[1]->IsString()) {
81    // chrome.i18n.getMessage("message_name", "one param");
82    substitutions.push_back(*v8::String::Utf8Value(args[1]->ToString()));
83  }
84
85  args.GetReturnValue().Set(v8::String::NewFromUtf8(
86      isolate,
87      ReplaceStringPlaceholders(message, substitutions, NULL).c_str()));
88}
89
90void I18NCustomBindings::GetL10nUILanguage(
91    const v8::FunctionCallbackInfo<v8::Value>& args) {
92  args.GetReturnValue().Set(v8::String::NewFromUtf8(
93      args.GetIsolate(), content::RenderThread::Get()->GetLocale().c_str()));
94}
95
96}  // namespace extensions
97