| // 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 ui { |
| class Event; |
| } |
| |
| namespace gfx { |
| class Rect; |
| } |
| |
| namespace mojo { |
| namespace service { |
| |
| class Node; |
| class View; |
| |
| class MOJO_VIEW_MANAGER_EXPORT NodeDelegate { |
| public: |
| // Invoked at the end of the Node's destructor (after it has been removed from |
| // the hierarchy and its active view has been reset). |
| virtual void OnNodeDestroyed(const Node* node) = 0; |
| |
| // Invoked when the hierarchy has changed. |
| virtual void OnNodeHierarchyChanged(const Node* node, |
| const Node* new_parent, |
| const Node* old_parent) = 0; |
| |
| virtual void OnNodeBoundsChanged(const Node* node, |
| const gfx::Rect& old_bounds, |
| const gfx::Rect& new_bounds) = 0; |
| |
| // Invoked when the View associated with a node changes. |
| virtual void OnNodeViewReplaced(const Node* node, |
| const View* new_view, |
| const View* old_view) = 0; |
| |
| // Invoked when an input event is received by the View at this node. |
| virtual void OnViewInputEvent(const View* view, |
| const ui::Event* event) = 0; |
| |
| protected: |
| virtual ~NodeDelegate() {} |
| }; |
| |
| } // namespace service |
| } // namespace mojo |
| |
| #endif // MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_ |