Adds more to viewmanager

mojo/services/view_manager/node.h

 // 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.
 
 #ifndef MOJO_SERVICES_VIEW_MANAGER_NODE_H_
 #define MOJO_SERVICES_VIEW_MANAGER_NODE_H_
 
+#include <vector>
+
 #include "base/logging.h"
 #include "mojo/services/view_manager/ids.h"
 #include "mojo/services/view_manager/view_manager_export.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 
 namespace mojo {
 namespace services {
 namespace view_manager {
 
 class NodeDelegate;
+class View;
 
 // Represents a node in the graph. Delegate is informed of interesting events.
 class MOJO_VIEW_MANAGER_EXPORT Node : public aura::WindowObserver {
  public:
   Node(NodeDelegate* delegate, const NodeId& id);
   virtual ~Node();
 
   void set_view_id(const ViewId& view_id) { view_id_ = view_id; }
   const ViewId& view_id() const { return view_id_; }
 
   const NodeId& id() const { return id_; }
 
   void Add(Node* child);
   void Remove(Node* child);
 
   Node* GetParent();
 
+  std::vector<Node*> GetChildren();
+
+  // Sets the view associated with this node. Node does not own its View.
+  void SetView(View* view);
+  View* view() { return view_; }
+
  private:
   // WindowObserver overrides:
   virtual void OnWindowHierarchyChanged(
       const aura::WindowObserver::HierarchyChangeParams& params) OVERRIDE;
 
   NodeDelegate* delegate_;
   const NodeId id_;
+
+  // Weak pointer to view associated with this node.
+  View* view_;
+
   ViewId view_id_;
+
   aura::Window window_;
 
   DISALLOW_COPY_AND_ASSIGN(Node);
 };
 
 }  // namespace view_manager
 }  // namespace services
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_VIEW_MANAGER_NODE_H_