[win/cros/lin] Add back the spellcheck menu.

chrome/browser/renderer_context_menu/spelling_options_submenu_observer.h

+// 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.
+
+#ifndef CHROME_BROWSER_RENDERER_CONTEXT_MENU_SPELLING_OPTIONS_SUBMENU_OBSERVER_H_
+#define CHROME_BROWSER_RENDERER_CONTEXT_MENU_SPELLING_OPTIONS_SUBMENU_OBSERVER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "components/renderer_context_menu/render_view_context_menu_observer.h"
+#include "ui/base/models/simple_menu_model.h"
+
+class RenderViewContextMenuProxy;
+
+// A class that implements the 'spell-checker options' submenu. This class
+// creates the submenu, adds it to the parent menu, and handles events.
+class SpellingOptionsSubMenuObserver : public RenderViewContextMenuObserver {
+ public:
+  SpellingOptionsSubMenuObserver(RenderViewContextMenuProxy* proxy,
+                                 ui::SimpleMenuModel::Delegate* delegate,
+                                 int group_id);
+  ~SpellingOptionsSubMenuObserver() override;
+
+  // RenderViewContextMenuObserver implementation.
+  void InitMenu(const content::ContextMenuParams& params) override;
+  bool IsCommandIdSupported(int command_id) override;
+  bool IsCommandIdChecked(int command_id) override;
+  bool IsCommandIdEnabled(int command_id) override;
+  void ExecuteCommand(int command_id) override;
+
+ private:
+  // The interface for adding a submenu to the parent.
+  RenderViewContextMenuProxy* proxy_;
+
+  // The submenu of the 'spell-checker options'. This class adds items to this
+  // submenu and adds it to the parent menu.
+  ui::SimpleMenuModel submenu_model_;
+
+  // The ID of radio items representing languages available for spellchecking.
+  int language_group_id_;
+
+  // The number of languages currently selected for spellchecking, which are
+  // also the first elements in |languages_|.
+  size_t num_selected_languages_;
+
+  // A vector of all languages available for spellchecking.
+  std::vector<std::string> languages_;
+
+  DISALLOW_COPY_AND_ASSIGN(SpellingOptionsSubMenuObserver);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_CONTEXT_MENU_SPELLING_OPTIONS_SUBMENU_OBSERVER_H_