Add PlatformWindow/Event related code for Ozone X11.

ui/platform_window/x11/x11_window_ozone.cc

Index: ui/platform_window/x11/x11_window_ozone.cc
diff --git a/ui/platform_window/x11/x11_window_ozone.cc b/ui/platform_window/x11/x11_window_ozone.cc
new file mode 100644
index 0000000000000000000000000000000000000000..22363f9aa8c56dd99db927d7c3865bc4b7296f7d
--- /dev/null
+++ b/ui/platform_window/x11/x11_window_ozone.cc
@@ -0,0 +1,64 @@
+// 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.
+
+#include "ui/platform_window/x11/x11_window_ozone.h"
+
+#include "ui/events/event.h"
+#include "ui/events/ozone/events_ozone.h"
+#include "ui/events/platform/x11/x11_event_source.h"
+#include "ui/events/x/events_x_utils.h"
+#include "ui/gfx/geometry/point.h"
+
+namespace ui {
+
+X11WindowOzone::X11WindowOzone(PlatformWindowDelegate* delegate)
+    : X11WindowBase(delegate) {}
+
+X11WindowOzone::~X11WindowOzone() {
+  Destroy();
+}
+
+void X11WindowOzone::Create() {
+  X11EventSourceLibevent* event_source = X11EventSourceLibevent::GetInstance();
+  DCHECK(event_source);
+  event_source->AddPlatformEventDispatcher(this);
+  event_source->AddXEventDispatcher(this);

[sadrul, 2016/02/08 17:28:33]

Is there a reason to not do this in the ctor?

[kylechar, 2016/02/08 19:08:10]

Done.

+
+  X11WindowBase::Create();
+}
+
+void X11WindowOzone::Destroy() {
+  X11EventSourceLibevent* event_source = X11EventSourceLibevent::GetInstance();
+  event_source->RemovePlatformEventDispatcher(this);
+  event_source->RemoveXEventDispatcher(this);
+}
+
+void X11WindowOzone::Close() {
+  Destroy();
+  X11WindowBase::Destroy();
+}
+
+void X11WindowOzone::SetCursor(PlatformCursor cursor) {}
+
+bool X11WindowOzone::DispatchXEvent(XEvent* xev) {
+  if (XWindowFromXEvent(*xev) != xwindow())
+    return false;
+
+  ProcessXWindowEvent(xev);
+  return true;
+}
+
+bool X11WindowOzone::CanDispatchEvent(const PlatformEvent& event) {
+  // TODO(kylechar): This is broken, there is no way to include XID of XWindow
+  // in ui::Event. Fix or use similar hack to DrmWindowHost.
+  return true;
+}
+
+uint32_t X11WindowOzone::DispatchEvent(const PlatformEvent& platform_event) {
+  Event* event = static_cast<Event*>(platform_event);
+  delegate()->DispatchEvent(event);
+  return POST_DISPATCH_STOP_PROPAGATION;
+}
+
+}  // namespace ui