linux_aura: Start implementing DesktopRootWindowHostLinux

ui/views/widget/desktop_root_window_host_linux.h

Index: ui/views/widget/desktop_root_window_host_linux.h
diff --git a/ui/views/widget/desktop_root_window_host_linux.h b/ui/views/widget/desktop_root_window_host_linux.h
index 8a5de347032156e5e0936e6f439ef8ebd12d6758..32acfd1f14b34695e86954f2196ccfe8fdc3523a 100644
--- a/ui/views/widget/desktop_root_window_host_linux.h
+++ b/ui/views/widget/desktop_root_window_host_linux.h
@@ -5,17 +5,52 @@
 #ifndef UI_VIEWS_WIDGET_DESKTOP_ROOT_WINDOW_HOST_LINUX_H_
 #define UI_VIEWS_WIDGET_DESKTOP_ROOT_WINDOW_HOST_LINUX_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 "ui/aura/root_window_host.h"
+#include "ui/gfx/rect.h"
+#include "ui/base/x/x11_atom_cache.h"
 #include "ui/views/widget/desktop_root_window_host.h"
 
+namespace aura {
+class DesktopActivationClient;
+class DesktopDispatcherClient;
+class FocusManager;
+namespace shared {
+class CompoundEventFilter;
+class InputMethodEventFilter;
+}
+}
+
 namespace views {
+class DesktopCaptureClient;
+class X11WindowEventFilter;
 
-class DesktopRootWindowHostLinux : public DesktopRootWindowHost {
+class DesktopRootWindowHostLinux : public DesktopRootWindowHost,
+                                   public aura::RootWindowHost,
+                                   public MessageLoop::Dispatcher {
  public:
   DesktopRootWindowHostLinux();
   virtual ~DesktopRootWindowHostLinux();
 
  private:
+  // Initializes our X11 surface to draw on. This method performs all
+  // initialization related to talking to the X11 server.
+  void InitX11Window(const gfx::Rect& bounds);
+
+  // Creates an aura::RootWindow to contain the |content_window|, along with
+  // all aura client objects that direct behavior.
+  void 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();
+
   // Overridden from DesktopRootWindowHost:
   virtual void Init(aura::Window* content_window,
                     const Widget::InitParams& params) OVERRIDE;
@@ -50,6 +85,69 @@ class DesktopRootWindowHostLinux : public DesktopRootWindowHost {
   virtual internal::InputMethodDelegate* GetInputMethodDelegate() OVERRIDE;
   virtual void SetWindowTitle(const string16& title) OVERRIDE;
 
+  // Overridden from aura::RootWindowHost:
+  virtual aura::RootWindow* GetRootWindow() OVERRIDE;
+  virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE;
+  virtual void Show() OVERRIDE;
+  virtual void Hide() OVERRIDE;
+  virtual void ToggleFullScreen() OVERRIDE;
+  virtual gfx::Rect GetBounds() const OVERRIDE;
+  virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
+  virtual gfx::Point GetLocationOnNativeScreen() const OVERRIDE;
+  virtual void SetCapture() OVERRIDE;
+  virtual void ReleaseCapture() OVERRIDE;
+  virtual void SetCursor(gfx::NativeCursor cursor) OVERRIDE;
+  virtual void ShowCursor(bool show) OVERRIDE;
+  virtual bool QueryMouseLocation(gfx::Point* location_return) OVERRIDE;
+  virtual bool ConfineCursorToRootWindow() OVERRIDE;
+  virtual void UnConfineCursor() OVERRIDE;
+  virtual void MoveCursorTo(const gfx::Point& location) OVERRIDE;
+  virtual void SetFocusWhenShown(bool focus_when_shown) OVERRIDE;
+  virtual bool GrabSnapshot(
+      const gfx::Rect& snapshot_bounds,
+      std::vector<unsigned char>* png_representation) OVERRIDE;
+  virtual void PostNativeEvent(const base::NativeEvent& native_event) OVERRIDE;
+  virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
+  virtual void PrepareForShutdown() OVERRIDE;
+
+  // Overridden from Dispatcher overrides:
+  virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
+
+  // X11 things
+  // The display and the native X window hosting the root window.
+  Display* xdisplay_;
+  ::Window xwindow_;
+
+  // The native root window.
+  ::Window x_root_window_;
+
+  ui::X11AtomCache atom_cache_;
+
+  // Is the window mapped to the screen?
+  bool window_mapped_;
+
+  // The bounds of |xwindow_|.
+  gfx::Rect bounds_;
+
+  // True if the window should be focused when the window is shown.
+  bool focus_when_shown_;
+
+  // aura:: objects that we own.
+  scoped_ptr<aura::RootWindow> root_window_;
+  scoped_ptr<DesktopCaptureClient> capture_client_;
+  scoped_ptr<aura::DesktopActivationClient> activation_client_;
+  scoped_ptr<aura::DesktopDispatcherClient> dispatcher_client_;
+
+  // Toplevel event filter which dispatches to other event filters.
+  aura::shared::CompoundEventFilter* root_window_event_filter_;
+
+  // An event filter that pre-handles all key events to send them to an IME.
+  scoped_ptr<aura::shared::InputMethodEventFilter> input_method_filter_;
+  scoped_ptr<X11WindowEventFilter> x11_window_event_filter_;
+
+  aura::RootWindowHostDelegate* root_window_host_delegate_;
+  aura::Window* content_window_;
+
   DISALLOW_COPY_AND_ASSIGN(DesktopRootWindowHostLinux);
 };