Reland of: Split out InputMethodMenuManager from InputMethodManager.

ash/ime/input_method_menu_manager.cc

+// Copyright 2014 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 "ash/ime/input_method_menu_manager.h"
+
+#include "base/logging.h"
+#include "base/memory/singleton.h"
+
+namespace ash {
+namespace ime {
+
+InputMethodMenuManager::InputMethodMenuManager()
+    : menu_list_(), observers_() {}
+
+InputMethodMenuManager::~InputMethodMenuManager() {}
+
+void InputMethodMenuManager::AddObserver(
+    InputMethodMenuManager::Observer* observer) {
+  observers_.AddObserver(observer);
+}
+
+void InputMethodMenuManager::RemoveObserver(
+    InputMethodMenuManager::Observer* observer) {
+  observers_.RemoveObserver(observer);
+}
+
+InputMethodMenuItemList
+InputMethodMenuManager::GetCurrentInputMethodMenuItemList() const {
+  return menu_list_;
+}
+
+void InputMethodMenuManager::SetCurrentInputMethodMenuItemList(
+    const InputMethodMenuItemList& menu_list) {
+  menu_list_ = menu_list;
+  FOR_EACH_OBSERVER(InputMethodMenuManager::Observer,
+                    observers_,
+                    InputMethodMenuItemChanged(this));
+}
+
+bool InputMethodMenuManager::HasInputMethodMenuItemForKey(
+    const std::string& key) const {
+  for (size_t i = 0; i < menu_list_.size(); ++i) {
+    if (menu_list_[i].key == key) {
+      return true;
+    }
+  }
+  return false;
+}
+
+// static
+InputMethodMenuManager* InputMethodMenuManager::GetInstance() {
+  return Singleton<InputMethodMenuManager>::get();
+}
+
+}  // namespace ime
+}  // namespace ash