Panels refactor: Support browserless panels on Linux.

chrome/browser/ui/panels/panel_titlebar_gtk.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_PANELS_PANEL_BROWSER_TITLEBAR_GTK_H_
-#define CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_TITLEBAR_GTK_H_
+#ifndef CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_GTK_H_
+#define CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "chrome/browser/ui/gtk/browser_titlebar_base.h"
 #include "chrome/browser/ui/gtk/titlebar_throb_animation.h"
 #include "chrome/browser/ui/panels/panel_constants.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/gfx/skia_util.h"
 
 class CustomDrawButton;
 class GtkThemeService;
-class PanelBrowserWindowGtk;
+class PanelGtk;
 
 namespace content {
 class WebContents;
 }
 
-class PanelBrowserTitlebarGtk : public BrowserTitlebarBase,
-                                public content::NotificationObserver {
+class PanelTitlebarGtk {
  public:
-  PanelBrowserTitlebarGtk(PanelBrowserWindowGtk* browser_window,
-                          GtkWindow* window);
-  virtual ~PanelBrowserTitlebarGtk();
+  explicit PanelTitlebarGtk(PanelGtk* panel_gtk);
+  virtual ~PanelTitlebarGtk();
 
   void UpdateTextColor();
   void UpdateMinimizeRestoreButtonVisibility();
 
   // When a panel appears in the same position as the one of the panel being
   // closed and the cursor stays in the close button, the close button appears
   // not to be clickable. This is because neither "enter-notify-event" nor
   // "clicked" event for the new panel gets fired if the mouse does not move.
   // This creates a bad experience when a user has multiple panels of the same
   // size (which is typical) and tries closing them all by repeatedly clicking
   // in the same place on the screen.
   //
   // Opened a gtk bug for this -
   //   https://bugzilla.gnome.org/show_bug.cgi?id=667841
   void SendEnterNotifyToCloseButtonIfUnderMouse();
 
-  // Overriden from BrowserTitlebarBase.
-  virtual void Init() OVERRIDE;
-  virtual void UpdateTitleAndIcon() OVERRIDE;
-  virtual void UpdateCustomFrame(bool use_custom_frame) OVERRIDE;
-  virtual void UpdateThrobber(content::WebContents* web_contents) OVERRIDE;
-  virtual void ShowContextMenu(GdkEventButton* event) OVERRIDE;
-  virtual GtkWidget* widget() const OVERRIDE;
-  virtual void set_window(GtkWindow* window) OVERRIDE;
-  virtual AvatarMenuButtonGtk* avatar_button() const OVERRIDE;
+  void Init();
+  void UpdateTitleAndIcon();
+  void UpdateThrobber(content::WebContents* web_contents);
+  GtkWidget* widget() const;
 
  private:
-  friend class NativePanelTestingGtk;
-
-  // Overridden from content::NotificationObserver:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
+  friend class GtkNativePanelTesting;
 
   void BuildButtons();
   CustomDrawButton* CreateButton(panel::TitlebarButtonType button_type);
   void GetButtonResources(panel::TitlebarButtonType button_type,
                           int* normal_image_id,
                           int* pressed_image_id,
                           int* hover_image_id,
                           int* tooltip_id) const;
   GtkWidget* GetButtonHBox();
 
-  // Callback for changes to window state.  This includes minimizing/restoring
-  // the window.
-  CHROMEG_CALLBACK_1(PanelBrowserTitlebarGtk, gboolean, OnWindowStateChanged,
-                     GtkWindow*, GdkEventWindowState*);
-
   // Callback for minimize/restore/close buttons.
-  CHROMEGTK_CALLBACK_0(PanelBrowserTitlebarGtk, void, OnButtonClicked);
+  CHROMEGTK_CALLBACK_0(PanelTitlebarGtk, void, OnButtonClicked);
 
   CustomDrawButton* close_button() const { return close_button_.get(); }
   CustomDrawButton* minimize_button() const { return minimize_button_.get(); }
   CustomDrawButton* restore_button() const { return restore_button_.get(); }
 
   SkColor GetTextColor() const;
 
-  // Pointers to the browser window that owns us and its GtkWindow.
-  PanelBrowserWindowGtk* browser_window_;
-  GtkWindow* window_;
+  // Pointers to the native panel window that owns us and its GtkWindow.
+  PanelGtk* panel_gtk_;
 
   // The container widget the holds the hbox which contains the whole titlebar.
   GtkWidget* container_;
 
   // VBoxes that holds the minimize/restore/close buttons box.
   GtkWidget* titlebar_right_buttons_vbox_;
 
   // HBoxes that contains the actual min/max/close buttons.
   GtkWidget* titlebar_right_buttons_hbox_;
 
   // The icon and page title.
   GtkWidget* icon_;
   GtkWidget* title_;
 
   // The buttons.
   scoped_ptr<CustomDrawButton> close_button_;
   scoped_ptr<CustomDrawButton> minimize_button_;
   scoped_ptr<CustomDrawButton> restore_button_;
 
   TitlebarThrobAnimation throbber_;
   GtkThemeService* theme_service_;
-  content::NotificationRegistrar registrar_;
 
-  DISALLOW_COPY_AND_ASSIGN(PanelBrowserTitlebarGtk);
+  DISALLOW_COPY_AND_ASSIGN(PanelTitlebarGtk);
 };
 
-#endif  // CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_TITLEBAR_GTK_H_
+#endif  // CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_GTK_H_