// Copyright 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 "base/memory/weak_ptr.h"
#include "chrome/browser/ui/libgtk2ui/gtk2_signal.h"
#include "ui/views/linux_ui/status_icon_linux.h"

typedef struct _AppIndicator AppIndicator;
typedef struct _GtkWidget GtkWidget;

namespace gfx {
class ImageSkia;
}

namespace ui {
class MenuModel;
}

namespace libgtk2ui {

class AppIndicatorIcon : public views::StatusIconLinux {
 public:
  // The id uniquely identifies the new status icon from other chrome status
  // icons.
  AppIndicatorIcon(std::string id,
                   const gfx::ImageSkia& image,
                   const base::string16& tool_tip);
  virtual ~AppIndicatorIcon();

  // Indicates whether libappindicator so could be opened.
  static bool CouldOpen();

  // Overridden from views::StatusIconLinux:
  virtual void SetImage(const gfx::ImageSkia& image) OVERRIDE;
  virtual void SetPressedImage(const gfx::ImageSkia& image) OVERRIDE;
  virtual void SetToolTip(const base::string16& tool_tip) OVERRIDE;
  virtual void UpdatePlatformContextMenu(ui::MenuModel* menu) OVERRIDE;
  virtual void RefreshPlatformContextMenu() OVERRIDE;

 private:
  void SetImageFromFile(const 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();

  // 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 tool_tip_;

  // 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_;

  base::WeakPtrFactory<AppIndicatorIcon> weak_factory_;

  DISALLOW_COPY_AND_ASSIGN(AppIndicatorIcon);
};

}  // namespace libgtk2ui

#endif  // CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_