linux_aura: Implement the static part of the dbus menu for Unity.

ui/views/widget/desktop_aura/desktop_root_window_host_x11.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 UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_
 
 #include <X11/Xlib.h>
 
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
 #undef RootWindow
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/root_window_host.h"
 #include "ui/base/cursor/cursor_loader_x11.h"
 #include "ui/base/x/x11_atom_cache.h"
 #include "ui/gfx/rect.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/desktop_aura/desktop_root_window_host.h"
 
 namespace aura {
 namespace client {
 class FocusClient;
 class ScreenPositionClient;
 }
 }
 
 namespace views {
 class DesktopActivationClient;
 class DesktopCaptureClient;
 class DesktopDragDropClientAuraX11;
 class DesktopDispatcherClient;
+class DesktopRootWindowHostObserverX11;
 class X11DesktopWindowMoveClient;
 class X11WindowEventFilter;
 
 namespace corewm {
 class CursorManager;
 }
 
 class VIEWS_EXPORT DesktopRootWindowHostX11 :
     public DesktopRootWindowHost,
     public aura::RootWindowHost,
@@ skipping 12 matching lines @@
   static DesktopRootWindowHostX11* GetHostForXID(XID xid);
 
   // Get all open top-level windows. This includes windows that may not be
   // visible.
   static std::vector<aura::Window*> GetAllOpenWindows();
 
   // Called by X11DesktopHandler to notify us that the native windowing system
   // has changed our activation.
   void HandleNativeWidgetActivationChanged(bool active);
 
+  void AddObserver(views::DesktopRootWindowHostObserverX11* observer);
+  void RemoveObserver(views::DesktopRootWindowHostObserverX11* observer);
+
   // Deallocates the internal list of open windows.
   static void CleanUpWindowList();
 
- private:
-  // Initializes our X11 surface to draw on. This method performs all
-  // initialization related to talking to the X11 server.
-  void InitX11Window(const Widget::InitParams& params);
-
-  // Creates an aura::RootWindow to contain the |content_window|, along with
-  // all aura client objects that direct behavior.
-  aura::RootWindow* InitRootWindow(const Widget::InitParams& params);
-
-  // Returns true if there's an X window manager present... in most cases.  Some
-  // window managers (notably, ion3) don't implement enough of ICCCM for us to
-  // detect that they're there.
-  bool IsWindowManagerPresent();
-
-  // Sends a message to the x11 window manager, enabling or disabling the
-  // states |state1| and |state2|.
-  void SetWMSpecState(bool enabled, ::Atom state1, ::Atom state2);
-
-  // Checks if the window manager has set a specific state.
-  bool HasWMSpecProperty(const char* property) const;
-
-  // Called when another DRWHL takes capture, or when capture is released
-  // entirely.
-  void OnCaptureReleased();
-
-  // Dispatches a mouse event, taking mouse capture into account. If a
-  // different host has capture, we translate the event to its coordinate space
-  // and dispatch it to that host instead.
-  void DispatchMouseEvent(ui::MouseEvent* event);
-
-  // See comment for variable open_windows_.
-  static std::list<XID>& open_windows();
-
+ protected:
   // Overridden from DesktopRootWindowHost:
   virtual aura::RootWindow* Init(aura::Window* content_window,
                                  const Widget::InitParams& params) OVERRIDE;
   virtual void InitFocus(aura::Window* window) OVERRIDE;
   virtual void Close() OVERRIDE;
   virtual void CloseNow() OVERRIDE;
   virtual aura::RootWindowHost* AsRootWindowHost() OVERRIDE;
   virtual void ShowWindowWithState(ui::WindowShowState show_state) OVERRIDE;
   virtual void ShowMaximizedWithBounds(
       const gfx::Rect& restored_bounds) OVERRIDE;
@@ skipping 60 matching lines @@
   virtual void OnCursorVisibilityChanged(bool show) OVERRIDE;
   virtual void MoveCursorTo(const gfx::Point& location) OVERRIDE;
   virtual void SetFocusWhenShown(bool focus_when_shown) OVERRIDE;
   virtual bool CopyAreaToSkCanvas(const gfx::Rect& source_bounds,
                                   const gfx::Point& dest_offset,
                                   SkCanvas* canvas) OVERRIDE;
   virtual void PostNativeEvent(const base::NativeEvent& native_event) OVERRIDE;
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
   virtual void PrepareForShutdown() OVERRIDE;
 
+private:
+  // Initializes our X11 surface to draw on. This method performs all
+  // initialization related to talking to the X11 server.
+  void InitX11Window(const Widget::InitParams& params);
+
+  // Creates an aura::RootWindow to contain the |content_window|, along with
+  // all aura client objects that direct behavior.
+  aura::RootWindow* InitRootWindow(const Widget::InitParams& params);
+
+  // Returns true if there's an X window manager present... in most cases.  Some
+  // window managers (notably, ion3) don't implement enough of ICCCM for us to
+  // detect that they're there.
+  bool IsWindowManagerPresent();
+
+  // Sends a message to the x11 window manager, enabling or disabling the
+  // states |state1| and |state2|.
+  void SetWMSpecState(bool enabled, ::Atom state1, ::Atom state2);
+
+  // Checks if the window manager has set a specific state.
+  bool HasWMSpecProperty(const char* property) const;
+
+  // Called when another DRWHL takes capture, or when capture is released
+  // entirely.
+  void OnCaptureReleased();
+
+  // Dispatches a mouse event, taking mouse capture into account. If a
+  // different host has capture, we translate the event to its coordinate space
+  // and dispatch it to that host instead.
+  void DispatchMouseEvent(ui::MouseEvent* event);
+
+  // See comment for variable open_windows_.
+  static std::list<XID>& open_windows();
+
   // Overridden from Dispatcher:
   virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
 
   base::WeakPtrFactory<DesktopRootWindowHostX11> close_widget_factory_;
 
   // X11 things
   // The display and the native X window hosting the root window.
   Display* xdisplay_;
   ::Window xwindow_;
 
@@ skipping 45 matching lines @@
 
   // TODO(beng): Consider providing an interface to DesktopNativeWidgetAura
   //             instead of providing this route back to Widget.
   internal::NativeWidgetDelegate* native_widget_delegate_;
 
   DesktopNativeWidgetAura* desktop_native_widget_aura_;
 
   aura::RootWindowHostDelegate* root_window_host_delegate_;
   aura::Window* content_window_;
 
+  ObserverList<DesktopRootWindowHostObserverX11> observer_list_;
+
   // The current root window host that has capture. While X11 has something
   // like Windows SetCapture()/ReleaseCapture(), it is entirely implicit and
   // there are no notifications when this changes. We need to track this so we
   // can notify widgets when they have lost capture, which controls a bunch of
   // things in views like hiding menus.
   static DesktopRootWindowHostX11* g_current_capture;
 
   // A list of all (top-level) windows that have been created but not yet
   // destroyed.
   static std::list<XID>* open_windows_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopRootWindowHostX11);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_