1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_
6 #define MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_
8 #include "mojo/services/view_manager/view_manager_export.h"
12 namespace view_manager {
17 class MOJO_VIEW_MANAGER_EXPORT NodeDelegate {
19 // Invoked when the hierarchy has changed.
20 virtual void OnNodeHierarchyChanged(const NodeId& node,
21 const NodeId& new_parent,
22 const NodeId& old_parent) = 0;
24 // Invoked when the View associated with a node changes.
25 virtual void OnNodeViewReplaced(const NodeId& node,
26 const ViewId& new_view_id,
27 const ViewId& old_view_id) = 0;
30 virtual ~NodeDelegate() {}
33 } // namespace view_manager
34 } // namespace services
37 #endif // MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_