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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 UI_ANDROID_OVERSCROLL_REFRESH_H_ | 5 #ifndef UI_ANDROID_OVERSCROLL_REFRESH_H_ |
6 #define UI_ANDROID_OVERSCROLL_REFRESH_H_ | 6 #define UI_ANDROID_OVERSCROLL_REFRESH_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "ui/android/ui_android_export.h" | 9 #include "ui/android/ui_android_export.h" |
10 #include "ui/gfx/geometry/size_f.h" | 10 #include "ui/gfx/geometry/size_f.h" |
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30 enum { kMinPullsToActivate = 3 }; | 30 enum { kMinPullsToActivate = 3 }; |
31 | 31 |
32 explicit OverscrollRefresh(OverscrollRefreshHandler* handler); | 32 explicit OverscrollRefresh(OverscrollRefreshHandler* handler); |
33 ~OverscrollRefresh(); | 33 ~OverscrollRefresh(); |
34 | 34 |
35 // Scroll event stream listening methods. | 35 // Scroll event stream listening methods. |
36 void OnScrollBegin(); | 36 void OnScrollBegin(); |
37 // Returns whether the refresh was activated. | 37 // Returns whether the refresh was activated. |
38 void OnScrollEnd(const gfx::Vector2dF& velocity); | 38 void OnScrollEnd(const gfx::Vector2dF& velocity); |
39 | 39 |
40 // Scroll ack listener. The effect will only be activated if the initial | 40 // Scroll ack listener. The effect will only be activated if the controller |
41 // updates go unconsumed. | 41 // decides it can navigate based on the consumed result and |
42 void OnScrollUpdateAck(bool was_consumed); | 42 // scroll-boundary-behavior. |
| 43 void OnOverscrolled(bool can_navigate); |
43 | 44 |
44 // Returns true if the effect has consumed the |scroll_delta|. | 45 // Returns true if the effect has consumed the |scroll_delta|. |
45 bool WillHandleScrollUpdate(const gfx::Vector2dF& scroll_delta); | 46 bool WillHandleScrollUpdate(const gfx::Vector2dF& scroll_delta); |
46 | 47 |
47 // Release the effect (if active), preventing any associated refresh action. | 48 // Release the effect (if active), preventing any associated refresh action. |
48 void ReleaseWithoutActivation(); | 49 void ReleaseWithoutActivation(); |
49 | 50 |
50 // Notify the effect of the latest scroll offset and overflow properties. | 51 // Notify the effect of the latest scroll offset and overflow properties. |
51 // The effect will be disabled when the offset is non-zero or overflow is | 52 // The effect will be disabled when the offset is non-zero or overflow is |
52 // hidden. Note: All dimensions are in device pixels. | 53 // hidden. Note: All dimensions are in device pixels. |
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76 } scroll_consumption_state_; | 77 } scroll_consumption_state_; |
77 | 78 |
78 OverscrollRefreshHandler* const handler_; | 79 OverscrollRefreshHandler* const handler_; |
79 | 80 |
80 DISALLOW_COPY_AND_ASSIGN(OverscrollRefresh); | 81 DISALLOW_COPY_AND_ASSIGN(OverscrollRefresh); |
81 }; | 82 }; |
82 | 83 |
83 } // namespace ui | 84 } // namespace ui |
84 | 85 |
85 #endif // UI_ANDROID_OVERSCROLL_REFRESH_H_ | 86 #endif // UI_ANDROID_OVERSCROLL_REFRESH_H_ |
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