Dispatch key events to the currently focused window.

mojo/services/public/cpp/view_manager/lib/view.cc

 // Copyright 2014 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 "mojo/services/public/cpp/view_manager/view.h"
 
 #include "mojo/public/cpp/application/service_provider_impl.h"
 #include "mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.h"
 #include "mojo/services/public/cpp/view_manager/lib/view_private.h"
 #include "mojo/services/public/cpp/view_manager/view_observer.h"
@@ skipping 252 matching lines @@
 }
 
 void View::AddObserver(ViewObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void View::RemoveObserver(ViewObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
+const View* View::GetRoot() const {
+  const View* root = this;
+  for (const View* parent = this; parent; parent = parent->parent())
+    root = parent;
+  return root;
+}
+
 void View::AddChild(View* child) {
   // TODO(beng): not necessarily valid to all connections, but possibly to the
   //             embeddee in an embedder-embeddee relationship.
   if (manager_)
     CHECK_EQ(ViewPrivate(child).view_manager(), manager_);
   LocalAddChild(child);
   if (manager_)
     static_cast<ViewManagerClientImpl*>(manager_)->AddChild(child->id(), id_);
 }
 
@@ skipping 198 matching lines @@
   if (IsDrawn() == value) {
     drawn_ = value;
     return;
   }
   FOR_EACH_OBSERVER(ViewObserver, observers_, OnViewDrawnChanging(this));
   drawn_ = value;
   FOR_EACH_OBSERVER(ViewObserver, observers_, OnViewDrawnChanged(this));
 }
 
 }  // namespace mojo