Add window manager component.

wm/host/root_window_host_linux.h

Index: wm/host/root_window_host_linux.h
diff --git a/ui/aura/root_window_host_linux.h b/wm/host/root_window_host_linux.h
similarity index 63%
copy from ui/aura/root_window_host_linux.h
copy to wm/host/root_window_host_linux.h
index 85fcd3b30d7392158b214e04df5a35b048e7b2fb..72880852752951f0d9c64f866fb25586f18d4a32 100644
--- a/ui/aura/root_window_host_linux.h
+++ b/wm/host/root_window_host_linux.h
@@ -1,9 +1,9 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 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 UI_AURA_ROOT_WINDOW_HOST_LINUX_H_
-#define UI_AURA_ROOT_WINDOW_HOST_LINUX_H_
+#ifndef WM_HOST_ROOT_WINDOW_HOST_LINUX_H_
+#define WM_HOST_ROOT_WINDOW_HOST_LINUX_H_
 
 #include <X11/Xlib.h>
 
@@ -12,9 +12,11 @@
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
 #undef RootWindow
 
+#include "base/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "ui/aura/root_window_host.h"
+#include "ui/aura/window_observer.h"
 #include "ui/base/x/x11_atom_cache.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/gfx/rect.h"
@@ -23,14 +25,18 @@ namespace ui {
 class MouseEvent;
 }
 
-namespace aura {
+namespace wm {
+class ForeignWindow;
 
 namespace internal {
 class TouchEventCalibrate;
 }
 
-class RootWindowHostLinux : public RootWindowHost,
-                            public MessageLoop::Dispatcher {
+// TODO(reveman): Reuse aura::RootWindowHostLinux code.
+class RootWindowHostLinux : public aura::RootWindowHost,
+                            public MessageLoop::Dispatcher,
+                            public aura::WindowObserver,
+                            public base::SupportsWeakPtr<RootWindowHostLinux> {
  public:
   explicit RootWindowHostLinux(const gfx::Rect& bounds);
   virtual ~RootWindowHostLinux();
@@ -38,9 +44,22 @@ class RootWindowHostLinux : public RootWindowHost,
   // Overridden from Dispatcher overrides:
   virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
 
-  // RootWindowHost Overrides.
-  virtual void SetDelegate(RootWindowHostDelegate* delegate) OVERRIDE;
-  virtual RootWindow* GetRootWindow() OVERRIDE;
+ private:
+  class MouseMoveFilter;
+
+  typedef base::hash_map< ::Window, scoped_refptr<ForeignWindow> >
+      ForeignWindowMap;
+
+  bool DispatchEventForRootWindow(const base::NativeEvent& event);
+
+  // Dispatches XI2 events. Note that some events targetted for the X root
+  // window are dispatched to the aura root window (e.g. touch events after
+  // calibration).
+  void DispatchXI2Event(const base::NativeEvent& event);
+
+  // Overridden from aura::RootWindowHost:
+  virtual void SetDelegate(aura::RootWindowHostDelegate* delegate) OVERRIDE;
+  virtual aura::RootWindow* GetRootWindow() OVERRIDE;
   virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
@@ -67,16 +86,6 @@ class RootWindowHostLinux : public RootWindowHost,
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
   virtual void PrepareForShutdown() OVERRIDE;
 
- private:
-  class MouseMoveFilter;
-
-  bool DispatchEventForRootWindow(const base::NativeEvent& event);
-
-  // Dispatches XI2 events. Note that some events targetted for the X root
-  // window are dispatched to the aura root window (e.g. touch events after
-  // calibration).
-  void DispatchXI2Event(const base::NativeEvent& event);
-
   // 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.
@@ -94,7 +103,35 @@ class RootWindowHostLinux : public RootWindowHost,
   // CopyAreaToSkCanvas() and GrabSnapshot().
   scoped_ptr<ui::XScopedImage> GetXImage(const gfx::Rect& snapshot_bounds);
 
-  RootWindowHostDelegate* delegate_;
+  // Overridden from aura::WindowObserver:
+  virtual void OnWindowAdded(aura::Window* window) OVERRIDE;
+  virtual void OnWillRemoveWindow(aura::Window* window) OVERRIDE;
+  virtual void OnWindowStackingChanged(aura::Window* window) OVERRIDE;
+  virtual void OnWindowVisibilityChanged(
+      aura::Window* window, bool visible) OVERRIDE;
+  virtual void OnWindowBoundsChanged(aura::Window* window,
+                                     const gfx::Rect& old_bounds,
+                                     const gfx::Rect& new_bounds) OVERRIDE;
+  virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
+
+  ::Window GetTopForeignWindow(const aura::Window* window);
+  ::Window FindForeignWindowToStackAbove(const aura::Window* window);
+  void MapWindowIfNeeded(ForeignWindow* window);
+  void UnmapWindowIfNeeded(ForeignWindow* window);
+
+  void RecursiveConfigure(
+      aura::Window* window,
+      gfx::Vector2d offset,
+      ::Window* sibling_to_stack_above,
+      SkRegion* input_region);
+
+  // Configure of native windows.
+  void Configure();
+
+  // Schedule deferred configure of native windows.
+  void ScheduleConfigure(aura::Window* window);
+
+  aura::RootWindowHostDelegate* delegate_;
 
   // The display and the native X window hosting the root window.
   Display* xdisplay_;
@@ -126,9 +163,18 @@ class RootWindowHostLinux : public RootWindowHost,
 
   ui::X11AtomCache atom_cache_;
 
+  ForeignWindowMap foreign_windows_;
+  aura::Window* configure_window_;
+
+  // The native input window.
+  ::Window x_input_window_;
+
+  // To ensure we set the default cursor for native windows.
+  bool need_to_set_default_cursor_;
+
   DISALLOW_COPY_AND_ASSIGN(RootWindowHostLinux);
 };
 
-}  // namespace aura
+}  // namespace wm
 
-#endif  // UI_AURA_ROOT_WINDOW_HOST_LINUX_H_
+#endif  // WM_HOST_ROOT_WINDOW_HOST_LINUX_H_