NTP5: Starting implementation of a native menu for showing other device sessions.

chrome/browser/ui/search/other_device_menu.h

+// Copyright (c) 2012 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_UI_SEARCH_OTHER_DEVICE_MENU_H_
+#define CHROME_BROWSER_UI_SEARCH_OTHER_DEVICE_MENU_H_
+
+#include "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+#include "ui/base/models/simple_menu_model.h"
+#include "ui/gfx/point.h"
+
+namespace content {
+class WebUI;
+}
+
+namespace views {
+class MenuRunner;
+}
+
+// A menu model that builds the contents of the other device menu.  This menu
+// is displayed when a device on the ntp_search device page is clicked and
+// contains the session for that device.  This is implemented natively rather
+// than in JavaScript to allow the menu to extend into the natively-rendered
+// section of the NTP.
+class OtherDeviceMenu : public ui::SimpleMenuModel::Delegate {
+ public:
+  // Enumerates the different menu item types.

[dhollowa, 2012/10/09 15:13:42]

This enum should be private, or better yet declared inside an anonymous
namespace within the .cc file.  I.e.:

namespace {
enum ItemType {
...
}
}  // namespace

[jeremycho, 2012/10/09 19:45:38]

Done.

+  enum ItemType {
+    // An item for restoring a single tab.
+    TAB,
+
+    // An item for restoring all tabs in this session.
+    OPEN_ALL,
+
+    // Number of enum entries, used for UMA histogram reporting macros.
+    ITEM_TYPE_ENUM_COUNT,
+  };
+
+  OtherDeviceMenu(content::WebUI* web_ui,
+                  std::string session_id,

[dhollowa, 2012/10/09 15:13:42]

These should remain const references.  Just the member variables needed to
change.

[jeremycho, 2012/10/09 19:45:38]

Ah sorry.  Done.

On 2012/10/09 15:13:42, dhollowa wrote:

+                  gfx::Point location);
+  virtual ~OtherDeviceMenu();
+
+  // Displays the menu.
+  void ShowMenu();
+
+  // ui::SimpleMenuModel::Delegate overrides:
+  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
+  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
+  virtual void ExecuteCommand(int command_id) OVERRIDE;
+  virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
+  virtual bool GetAcceleratorForCommandId(
+      int command_id,
+      ui::Accelerator* accelerator) OVERRIDE;
+
+ private:
+  typedef std::vector<linked_ptr<DictionaryValue> > TabData;
+
+  // Adds the tabs of the |session_id_| session to the menu.
+  void AddDeviceTabs();
+
+  content::WebUI* web_ui_;  // weak
+  std::string session_id_;
+  // The anchor point for the top-left corner of the menu.
+  gfx::Point location_;
+  ui::SimpleMenuModel menu_model_;
+  scoped_ptr<views::MenuRunner> menu_runner_;
+
+  // The tab data for each menu item, in the order in which they're displayed.
+  // |command_id| i corresponds to index i.
+  TabData tab_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(OtherDeviceMenu);
+};
+
+#endif  // CHROME_BROWSER_UI_SEARCH_OTHER_DEVICE_MENU_H_