Have panels respond to changes in work area on Linux.

chrome/browser/ui/panels/panel_browser_window_gtk.h

 // Copyright (c) 2011 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_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_WINDOW_GTK_H_
 
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 #include "chrome/browser/ui/gtk/menu_gtk.h"
 #include "chrome/browser/ui/panels/native_panel.h"
 #include "ui/base/animation/animation_delegate.h"
+#include "ui/base/x/work_area_watcher_x_observer.h"
 
 class Panel;
 class PanelSettingsMenuModel;
 class NativePanelTestingGtk;
 
 namespace ui {
 
 class SlideAnimation;
 
 }
 
 class PanelBrowserWindowGtk : public BrowserWindowGtk,
-                              public NativePanel,
                               public MenuGtk::Delegate,
                               public MessageLoopForUI::Observer,
-                              public ui::AnimationDelegate {
+                              public NativePanel,
+                              public ui::AnimationDelegate,
+                              public ui::WorkAreaWatcherXObserver {
   friend class NativePanelTestingGtk;
  public:
   PanelBrowserWindowGtk(Browser* browser, Panel* panel,
                         const gfx::Rect& bounds);
   virtual ~PanelBrowserWindowGtk();
 
-  // BrowserWindowGtk overrides
+  // BrowserWindowGtk override
   virtual void Init() OVERRIDE;
 
   // BrowserWindow overrides
   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
   virtual void ShowSettingsMenu(GtkWidget* widget,
                                 GdkEventButton* event) OVERRIDE;
   virtual TitleDecoration GetWindowTitle(std::string* title) const OVERRIDE;
 
+  // ui::WorkAreaWatcherXObserver override
+  virtual void WorkAreaChanged() OVERRIDE;
+
  protected:
   // BrowserWindowGtk overrides
   virtual bool GetWindowEdge(int x, int y, GdkWindowEdge* edge) OVERRIDE;
   virtual bool HandleTitleBarLeftMousePress(
       GdkEventButton* event,
       guint32 last_click_time,
       gfx::Point last_click_position) OVERRIDE;
   virtual void SaveWindowPosition() OVERRIDE;
   virtual void SetGeometryHints() OVERRIDE;
   virtual bool UseCustomFrame() OVERRIDE;
   virtual void OnSizeChanged(int width, int height) OVERRIDE;
   virtual void DrawCustomFrame(cairo_t* cr, GtkWidget* widget,
                                GdkEventExpose* event) OVERRIDE;
   virtual void ActiveWindowChanged(GdkWindow* active_window) OVERRIDE;
   // 'focus-in-event' handler.
   virtual void HandleFocusIn(GtkWidget* widget,
                              GdkEventFocus* event) OVERRIDE;
 
-
   // Overridden from NativePanel:
   virtual void ShowPanel() OVERRIDE;
   virtual void ShowPanelInactive() OVERRIDE;
   virtual gfx::Rect GetPanelBounds() const OVERRIDE;
   virtual void SetPanelBounds(const gfx::Rect& bounds) OVERRIDE;
   virtual void ClosePanel() OVERRIDE;
   virtual void ActivatePanel() OVERRIDE;
   virtual void DeactivatePanel() OVERRIDE;
   virtual bool IsPanelActive() const OVERRIDE;
   virtual gfx::NativeWindow GetNativePanelHandle() OVERRIDE;
@@ skipping 104 matching lines @@
   base::Time disableMinimizeUntilTime_;
 
   // Used to animate the bounds change.
   scoped_ptr<ui::SlideAnimation> bounds_animator_;
   gfx::Rect animation_start_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(PanelBrowserWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_WINDOW_GTK_H_