Add PlatformWindow/Event related code for Ozone X11.

ui/ozone/platform/x11/x11_window_ozone.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2016 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_PLATFORM_WINDOW_X11_X11_WINDOW_H_
-#define UI_PLATFORM_WINDOW_X11_X11_WINDOW_H_
+#ifndef UI_OZONE_PLATFORM_X11_X11_WINDOW_OZONE_H_
+#define UI_OZONE_PLATFORM_X11_X11_WINDOW_OZONE_H_
 
-#include <stdint.h>
+#include <map>
 
-#include "base/macros.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/x/x11_atom_cache.h"
+#include "ui/ozone/platform/x11/x11_window_manager_ozone.h"
 #include "ui/platform_window/platform_window.h"
-#include "ui/platform_window/platform_window_delegate.h"
-#include "ui/platform_window/x11/x11_window_export.h"
 
 typedef struct _XDisplay XDisplay;
 typedef unsigned long XID;
+typedef union _XEvent XEvent;
 
 namespace ui {
 
-class X11_WINDOW_EXPORT X11Window : public PlatformWindow,
-                                    public PlatformEventDispatcher {
+// Manages one XWindow and handles events for that window.
+class X11WindowOzone : public PlatformWindow, public PlatformEventDispatcher {

[sadrul, 2016/01/21 14:53:01]

Can you use X11Window instead? |on_create_callback_| can be replaced by
overriding OnAcceleratedWidgetAvailable(), and |on_destroy_callback_| can be
replaced by overriding OnClosed(). Is there anything else you need? I would try
to just update X11Window so we can use that. Worst case, we can have this
X11WindowOzone-isa-X11Window and override some things.

[spang, 2016/01/21 15:07:33]

We have to pull out the event handling stuff since PlatformEvent is defined
differently in the two builds.

Maybe we should have X11WindowBase, X11Window, & X11WindowOzone?

  public:
-  explicit X11Window(PlatformWindowDelegate* delegate);
-  ~X11Window() override;
+  explicit X11WindowOzone(PlatformWindowDelegate* delegate,
+                          WindowStatusCallback on_create_callback,
+                          WindowStatusCallback on_destroy_callback);
+  ~X11WindowOzone() override;
 
- private:
-  void Destroy();
+  // Creates new underlying XWindow. Does not map XWindow.
+  void Create();
 
-  void ProcessXInput2Event(XEvent* xevent);
+  // Processes an XEvent that can't be converted into an equivalent ui::Event
+  // and handled by normal event loop.
+  void ProcessXEvent(const XEvent& xev);
 
   // PlatformWindow:
   void Show() override;
   void Hide() override;
   void Close() override;
   void SetBounds(const gfx::Rect& bounds) override;
   gfx::Rect GetBounds() override;
   void SetTitle(const base::string16& title) override;
   void SetCapture() override;
   void ReleaseCapture() override;
   void ToggleFullscreen() override;
   void Maximize() override;
   void Minimize() override;
   void Restore() override;
   void SetCursor(PlatformCursor cursor) override;
   void MoveCursorTo(const gfx::Point& location) override;
   void ConfineCursorToBounds(const gfx::Rect& bounds) override;
   PlatformImeController* GetPlatformImeController() override;
 
+ private:
+  void Destroy();
+
   // PlatformEventDispatcher:
   bool CanDispatchEvent(const PlatformEvent& event) override;
   uint32_t DispatchEvent(const PlatformEvent& event) override;
 
   PlatformWindowDelegate* delegate_;
 
+  WindowStatusCallback on_create_callback_;
+  WindowStatusCallback on_destroy_callback_;
+
   XDisplay* xdisplay_;
   XID xwindow_;
   XID xroot_window_;
   X11AtomCache atom_cache_;
 
   base::string16 window_title_;
 
   // Setting the bounds is an asynchronous operation in X11. |requested_bounds_|
   // is the bounds requested using XConfigureWindow, and |confirmed_bounds_| is
   // the bounds the X11 server has set on the window.
   gfx::Rect requested_bounds_;
   gfx::Rect confirmed_bounds_;
 
-  bool window_mapped_;
+  bool window_mapped_ = false;
 
-  DISALLOW_COPY_AND_ASSIGN(X11Window);
+  DISALLOW_COPY_AND_ASSIGN(X11WindowOzone);
 };
 
-namespace test {
-
-// Sets the value of the |override_redirect| flag when creating an X11 window.
-// It is necessary to set this flag on for various tests, otherwise the call to
-// X11Window::Show() blocks because it never receives the MapNotify event. It is
-// unclear why this is necessary, but might be related to calls to
-// XInitThreads().
-X11_WINDOW_EXPORT void SetUseOverrideRedirectWindowByDefault(
-    bool override_redirect);
-
-}  // namespace test
-
 }  // namespace ui
 
-#endif  // UI_PLATFORM_WINDOW_X11_X11_WINDOW_H_
+#endif  // UI_OZONE_PLATFORM_X11_X11_WINDOW_OZONE_H_