Linux status icon for Ubuntu Unity

chrome/browser/ui/libgtk2ui/app_indicator_icon.h

+// Copyright (c) 2013 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_LIBGTK2UI_APP_INDICATOR_ICON_H_
+#define CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
+
+#include "base/files/file_path.h"
+#include "chrome/browser/ui/libgtk2ui/gtk2_signal.h"
+#include "ui/linux_ui/status_icon_linux.h"
+
+typedef struct _AppIndicator AppIndicator;
+typedef struct _GtkWidget GtkWidget;
+
+namespace gfx {
+class ImageSkia;
+}
+
+namespace libgtk2ui {
+
+class AppIndicatorIcon : public StatusIconLinux {
+ public:
+  // The id uniquely identifies the new status icon from other chrome status
+  // icons.
+  explicit AppIndicatorIcon(std::string id);
+  virtual ~AppIndicatorIcon();
+
+  // Indicates whether libappindicator so could be opened.
+  static bool CouldOpen();
+
+  // Overridden from StatusIcon:
+  virtual void SetImage(const gfx::ImageSkia& image) OVERRIDE;
+  virtual void SetPressedImage(const gfx::ImageSkia& image) OVERRIDE;
+  virtual void SetToolTip(const string16& tool_tip) OVERRIDE;
+  virtual void SetClickActionLabel(const string16& label) OVERRIDE;
+
+ protected:
+  // Overridden from StatusIcon.
+  virtual void UpdatePlatformContextMenu(ui::MenuModel* menu) OVERRIDE;
+
+ private:
+  void SetImageFromFile(base::FilePath icon_file_path);
+  void SetMenu();
+
+  // Adds a menu item to the top of the existing gtk_menu as a replacement for
+  // the status icon click action or creates a new gtk menu with the menu item
+  // if a menu doesn't exist. Clicking on this menu item should simulate a
+  // status icon click by despatching a click event.
+  void CreateClickActionReplacement();
+  void DestroyMenu();
+
+  static base::FilePath CreateTempImageFile(gfx::ImageSkia image,
+                                            int icon_change_count,
+                                            std::string id);
+  static void DeletePath(base::FilePath icon_file_path);
+
+  // Updates all the enabled/checked states and the dynamic labels.
+  void UpdateMenu();
+
+  // Callback for when the status icon click replacement menu item is clicked.
+  CHROMEGTK_CALLBACK_0(AppIndicatorIcon, void, OnClick);
+
+  // Callback for when a menu item is clicked.
+  CHROMEGTK_CALLBACK_0(AppIndicatorIcon, void, OnMenuItemActivated);
+
+  std::string id_;
+  std::string click_action_label_;
+
+  // Gtk status icon wrapper
+  AppIndicator* icon_;
+
+  GtkWidget* gtk_menu_;
+  ui::MenuModel* menu_model_;
+
+  base::FilePath icon_file_path_;
+  int icon_change_count_;
+  bool block_activation_;
+  bool has_click_action_replacement_;
+};
+
+}  // namespace libgtk2ui
+
+#endif  // CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_