Add PlatformWindow/Event related code for Ozone X11.

ui/platform_window/x11/x11_window_ozone.cc

+// 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 <X11/Xlib.h>
+
+#include "ui/events/event.h"
+#include "ui/events/ozone/events_ozone.h"
+#include "ui/events/platform/x11/x11_event_source.h"
+#include "ui/gfx/geometry/point.h"
+
+namespace ui {
+
+X11WindowOzone::X11WindowOzone(X11EventSourceLibevent* event_source,
+                               PlatformWindowDelegate* delegate)
+    : X11WindowBase(delegate), event_source_(event_source) {
+  DCHECK(event_source_);
+  event_source_->AddPlatformEventDispatcher(this);
+  event_source_->AddXEventDispatcher(this);
+}
+
+X11WindowOzone::~X11WindowOzone() {
+  event_source_->RemovePlatformEventDispatcher(this);
+  event_source_->RemoveXEventDispatcher(this);
+}
+
+void X11WindowOzone::SetCursor(PlatformCursor cursor) {}
+
+bool X11WindowOzone::DispatchXEvent(XEvent* xev) {
+  if (!IsEventForXWindow(*xev))
+    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 xwindow() != None;
+}
+
+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