| // 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_DELEGATE_H_ |
| #define MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_ |
| |
| #include "mojo/services/view_manager/view_manager_export.h" |
| |
| namespace mojo { |
| namespace services { |
| namespace view_manager { |
| |
| struct NodeId; |
| struct ViewId; |
| |
| class MOJO_VIEW_MANAGER_EXPORT NodeDelegate { |
| public: |
| // Invoked when the hierarchy has changed. |
| virtual void OnNodeHierarchyChanged(const NodeId& node, |
| const NodeId& new_parent, |
| const NodeId& old_parent) = 0; |
| |
| // Invoked when the View associated with a node changes. |
| virtual void OnNodeViewReplaced(const NodeId& node, |
| const ViewId& new_view_id, |
| const ViewId& old_view_id) = 0; |
| |
| protected: |
| virtual ~NodeDelegate() {} |
| }; |
| |
| } // namespace view_manager |
| } // namespace services |
| } // namespace mojo |
| |
| #endif // MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_ |