ozone/platform/wayland: Implement pointer handling

ui/ozone/platform/wayland/wayland_window.h

Index: ui/ozone/platform/wayland/wayland_window.h
diff --git a/ui/ozone/platform/wayland/wayland_window.h b/ui/ozone/platform/wayland/wayland_window.h
index 8b8d5a20871dee01f3e7c10340940cec6a8a657f..2721c46ac600f3750d4946e9522c9886bacf9ea7 100644
--- a/ui/ozone/platform/wayland/wayland_window.h
+++ b/ui/ozone/platform/wayland/wayland_window.h
@@ -5,6 +5,7 @@
 #ifndef UI_OZONE_PLATFORM_WAYLAND_WAYLAND_WINDOW_H_
 #define UI_OZONE_PLATFORM_WAYLAND_WAYLAND_WINDOW_H_
 
+#include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/ozone/platform/wayland/wayland_object.h"
@@ -14,13 +15,15 @@ namespace ui {
 
 class WaylandDisplay;
 
-class WaylandWindow : public PlatformWindow {
+class WaylandWindow : public PlatformWindow, public PlatformEventDispatcher {
  public:
   WaylandWindow(PlatformWindowDelegate* delegate,
                 WaylandDisplay* display,
                 const gfx::Rect& bounds);
   ~WaylandWindow() override;
 
+  static WaylandWindow* FromSurface(wl_surface* surface);
+
   bool Initialize();
 
   wl_surface* GetSurface();
@@ -30,6 +33,9 @@ class WaylandWindow : public PlatformWindow {
   // be called after processing all pending events in the wayland connection.
   void ApplyPendingBounds();
 
+  // Set whether this window has pointer focus and should dispatch mouse events.
+  void set_pointer_focus(bool focus) { has_pointer_focus_ = focus; }
+
   // PlatformWindow
   void Show() override;
   void Hide() override;
@@ -48,6 +54,10 @@ class WaylandWindow : public PlatformWindow {
   void ConfineCursorToBounds(const gfx::Rect& bounds) override;
   PlatformImeController* GetPlatformImeController() override;
 
+  // PlatformEventDispatcher
+  bool CanDispatchEvent(const PlatformEvent& event) override;
+  uint32_t DispatchEvent(const PlatformEvent& event) override;
+
   // xdg_surface_listener
   static void Configure(void* data,
                         xdg_surface* obj,
@@ -67,6 +77,7 @@ class WaylandWindow : public PlatformWindow {
   gfx::Rect bounds_;
   gfx::Rect pending_bounds_;
   uint32_t pending_configure_serial_;
+  bool has_pointer_focus_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(WaylandWindow);
 };