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| 1 // Copyright 2015 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. | |
| 4 | |
| 5 #ifndef SERVICES_VIEW_MANAGER_SERVER_VIEW_OBSERVER_H_ | |
| 6 #define SERVICES_VIEW_MANAGER_SERVER_VIEW_OBSERVER_H_ | |
| 7 | |
| 8 #include "mojo/services/view_manager/interfaces/view_manager_constants.mojom.h" | |
| 9 | |
| 10 namespace gfx { | |
| 11 class Rect; | |
| 12 } | |
| 13 | |
| 14 namespace mojo { | |
| 15 class ViewportMetrics; | |
| 16 } | |
| 17 | |
| 18 namespace view_manager { | |
| 19 | |
| 20 class ServerView; | |
| 21 | |
| 22 // TODO(sky): rename to OnDid and OnWill everywhere. | |
| 23 class ServerViewObserver { | |
| 24 public: | |
| 25 // Invoked when a view is about to be destroyed; before any of the children | |
| 26 // have been removed and before the view has been removed from its parent. | |
| 27 virtual void OnWillDestroyView(ServerView* view) {} | |
| 28 | |
| 29 // Invoked at the end of the View's destructor (after it has been removed from | |
| 30 // the hierarchy). | |
| 31 virtual void OnViewDestroyed(ServerView* view) {} | |
| 32 | |
| 33 virtual void OnWillChangeViewHierarchy(ServerView* view, | |
| 34 ServerView* new_parent, | |
| 35 ServerView* old_parent) {} | |
| 36 | |
| 37 virtual void OnViewHierarchyChanged(ServerView* view, | |
| 38 ServerView* new_parent, | |
| 39 ServerView* old_parent) {} | |
| 40 | |
| 41 virtual void OnViewBoundsChanged(ServerView* view, | |
| 42 const gfx::Rect& old_bounds, | |
| 43 const gfx::Rect& new_bounds) {} | |
| 44 | |
| 45 virtual void OnViewReordered(ServerView* view, | |
| 46 ServerView* relative, | |
| 47 mojo::OrderDirection direction) {} | |
| 48 | |
| 49 virtual void OnWillChangeViewVisibility(ServerView* view) {} | |
| 50 virtual void OnViewVisibilityChanged(ServerView* view) {} | |
| 51 | |
| 52 virtual void OnViewSharedPropertyChanged( | |
| 53 ServerView* view, | |
| 54 const std::string& name, | |
| 55 const std::vector<uint8_t>* new_data) {} | |
| 56 | |
| 57 protected: | |
| 58 virtual ~ServerViewObserver() {} | |
| 59 }; | |
| 60 | |
| 61 } // namespace view_manager | |
| 62 | |
| 63 #endif // SERVICES_VIEW_MANAGER_SERVER_VIEW_OBSERVER_H_ | |
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