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Side by Side Diff: components/mus/public/cpp/view_observer.h

Issue 1340983002: Mandoline UI Process: Update namespaces and file names (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebased Created 5 years, 3 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef COMPONENTS_MUS_PUBLIC_CPP_VIEW_OBSERVER_H_ 5 #ifndef COMPONENTS_MUS_PUBLIC_CPP_VIEW_OBSERVER_H_
6 #define COMPONENTS_MUS_PUBLIC_CPP_VIEW_OBSERVER_H_ 6 #define COMPONENTS_MUS_PUBLIC_CPP_VIEW_OBSERVER_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "components/mus/public/cpp/view.h" 10 #include "components/mus/public/cpp/view.h"
11 #include "ui/mojo/events/input_events.mojom.h" 11 #include "ui/mojo/events/input_events.mojom.h"
12 12
13 namespace mojo { 13 namespace mus {
14 14
15 class View; 15 class View;
16 16
17 // A note on -ing and -ed suffixes: 17 // A note on -ing and -ed suffixes:
18 // 18 //
19 // -ing methods are called before changes are applied to the local view model. 19 // -ing methods are called before changes are applied to the local view model.
20 // -ed methods are called after changes are applied to the local view model. 20 // -ed methods are called after changes are applied to the local view model.
21 // 21 //
22 // If the change originated from another connection to the view manager, it's 22 // If the change originated from another connection to the view manager, it's
23 // possible that the change has already been applied to the service-side model 23 // possible that the change has already been applied to the service-side model
24 // prior to being called, so for example in the case of OnViewDestroying(), it's 24 // prior to being called, so for example in the case of OnViewDestroying(), it's
25 // possible the view has already been destroyed on the service side. 25 // possible the view has already been destroyed on the service side.
26 26
27 class ViewObserver { 27 class ViewObserver {
28 public: 28 public:
29 struct TreeChangeParams { 29 struct TreeChangeParams {
30 TreeChangeParams(); 30 TreeChangeParams();
31 View* target; 31 View* target;
32 View* old_parent; 32 View* old_parent;
33 View* new_parent; 33 View* new_parent;
34 View* receiver; 34 View* receiver;
35 }; 35 };
36 36
37 virtual void OnTreeChanging(const TreeChangeParams& params) {} 37 virtual void OnTreeChanging(const TreeChangeParams& params) {}
38 virtual void OnTreeChanged(const TreeChangeParams& params) {} 38 virtual void OnTreeChanged(const TreeChangeParams& params) {}
39 39
40 virtual void OnViewReordering(View* view, 40 virtual void OnViewReordering(View* view,
41 View* relative_view, 41 View* relative_view,
42 OrderDirection direction) {} 42 mojo::OrderDirection direction) {}
43 virtual void OnViewReordered(View* view, 43 virtual void OnViewReordered(View* view,
44 View* relative_view, 44 View* relative_view,
45 OrderDirection direction) {} 45 mojo::OrderDirection direction) {}
46 46
47 virtual void OnViewDestroying(View* view) {} 47 virtual void OnViewDestroying(View* view) {}
48 virtual void OnViewDestroyed(View* view) {} 48 virtual void OnViewDestroyed(View* view) {}
49 49
50 virtual void OnViewBoundsChanging(View* view, 50 virtual void OnViewBoundsChanging(View* view,
51 const Rect& old_bounds, 51 const mojo::Rect& old_bounds,
52 const Rect& new_bounds) {} 52 const mojo::Rect& new_bounds) {}
53 virtual void OnViewBoundsChanged(View* view, 53 virtual void OnViewBoundsChanged(View* view,
54 const Rect& old_bounds, 54 const mojo::Rect& old_bounds,
55 const Rect& new_bounds) {} 55 const mojo::Rect& new_bounds) {}
56 56
57 virtual void OnViewViewportMetricsChanged( 57 virtual void OnViewViewportMetricsChanged(
58 View* view, 58 View* view,
59 const ViewportMetrics& old_metrics, 59 const mojo::ViewportMetrics& old_metrics,
60 const ViewportMetrics& new_metrics) {} 60 const mojo::ViewportMetrics& new_metrics) {}
61 61
62 virtual void OnViewFocusChanged(View* gained_focus, View* lost_focus) {} 62 virtual void OnViewFocusChanged(View* gained_focus, View* lost_focus) {}
63 63
64 virtual void OnViewInputEvent(View* view, const EventPtr& event) {} 64 virtual void OnViewInputEvent(View* view, const mojo::EventPtr& event) {}
65 65
66 virtual void OnViewVisibilityChanging(View* view) {} 66 virtual void OnViewVisibilityChanging(View* view) {}
67 virtual void OnViewVisibilityChanged(View* view) {} 67 virtual void OnViewVisibilityChanged(View* view) {}
68 68
69 // Invoked when this View's shared properties have changed. This can either 69 // Invoked when this View's shared properties have changed. This can either
70 // be caused by SetSharedProperty() being called locally, or by us receiving 70 // be caused by SetSharedProperty() being called locally, or by us receiving
71 // a mojo message that this property has changed. If this property has been 71 // a mojo message that this property has changed. If this property has been
72 // added, |old_data| is null. If this property was removed, |new_data| is 72 // added, |old_data| is null. If this property was removed, |new_data| is
73 // null. 73 // null.
74 virtual void OnViewSharedPropertyChanged( 74 virtual void OnViewSharedPropertyChanged(
(...skipping 15 matching lines...) Expand all
90 90
91 // Sent when the drawn state changes. This is only sent for the root nodes 91 // Sent when the drawn state changes. This is only sent for the root nodes
92 // when embedded. 92 // when embedded.
93 virtual void OnViewDrawnChanging(View* view) {} 93 virtual void OnViewDrawnChanging(View* view) {}
94 virtual void OnViewDrawnChanged(View* view) {} 94 virtual void OnViewDrawnChanged(View* view) {}
95 95
96 protected: 96 protected:
97 virtual ~ViewObserver() {} 97 virtual ~ViewObserver() {}
98 }; 98 };
99 99
100 } // namespace mojo 100 } // namespace mus
101 101
102 #endif // COMPONENTS_MUS_PUBLIC_CPP_VIEW_OBSERVER_H_ 102 #endif // COMPONENTS_MUS_PUBLIC_CPP_VIEW_OBSERVER_H_
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