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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 CONTENT_BROWSER_ANDROID_OVERSCROLL_REFRESH_H_ | 5 #ifndef CONTENT_BROWSER_ANDROID_OVERSCROLL_REFRESH_H_ |
6 #define CONTENT_BROWSER_ANDROID_OVERSCROLL_REFRESH_H_ | 6 #define CONTENT_BROWSER_ANDROID_OVERSCROLL_REFRESH_H_ |
7 | 7 |
8 #include "base/memory/scoped_ptr.h" | 8 #include "base/memory/scoped_ptr.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 #include "content/common/content_export.h" | 10 #include "content/common/content_export.h" |
11 #include "ui/gfx/geometry/size_f.h" | 11 #include "ui/gfx/geometry/size_f.h" |
12 #include "ui/gfx/geometry/vector2d_f.h" | 12 #include "ui/gfx/geometry/vector2d_f.h" |
13 | 13 |
14 namespace cc { | 14 namespace cc { |
15 class Layer; | 15 class Layer; |
16 } | 16 } |
17 | 17 |
18 namespace ui { | 18 namespace ui { |
19 class SystemUIResourceManager; | 19 class ResourceManager; |
20 } | 20 } |
21 | 21 |
22 namespace content { | 22 namespace content { |
23 | 23 |
24 // Allows both page reload activation and page reloading state queries. | 24 // Allows both page reload activation and page reloading state queries. |
25 class CONTENT_EXPORT OverscrollRefreshClient { | 25 class CONTENT_EXPORT OverscrollRefreshClient { |
26 public: | 26 public: |
27 virtual ~OverscrollRefreshClient() {} | 27 virtual ~OverscrollRefreshClient() {} |
28 | 28 |
29 // Called when the effect is released beyond the activation threshold. This | 29 // Called when the effect is released beyond the activation threshold. This |
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40 // 1) The scroll begins when the page has no vertical scroll offset. | 40 // 1) The scroll begins when the page has no vertical scroll offset. |
41 // 2) The page doesn't consume the initial scroll events. | 41 // 2) The page doesn't consume the initial scroll events. |
42 // 3) The initial scroll direction is upward. | 42 // 3) The initial scroll direction is upward. |
43 // The actual page reload action is triggered only when the effect is active | 43 // The actual page reload action is triggered only when the effect is active |
44 // and beyond a particular threshold when released. | 44 // and beyond a particular threshold when released. |
45 class CONTENT_EXPORT OverscrollRefresh { | 45 class CONTENT_EXPORT OverscrollRefresh { |
46 public: | 46 public: |
47 // Both |resource_manager| and |client| must not be null. | 47 // Both |resource_manager| and |client| must not be null. |
48 // |target_drag_offset_pixels| is the threshold beyond which the effect | 48 // |target_drag_offset_pixels| is the threshold beyond which the effect |
49 // will trigger a refresh action when released. | 49 // will trigger a refresh action when released. |
50 OverscrollRefresh(ui::SystemUIResourceManager* resource_manager, | 50 OverscrollRefresh(ui::ResourceManager* resource_manager, |
51 OverscrollRefreshClient* client, | 51 OverscrollRefreshClient* client, |
52 float target_drag_offset_pixels); | 52 float target_drag_offset_pixels); |
53 ~OverscrollRefresh(); | 53 ~OverscrollRefresh(); |
54 | 54 |
55 // Scroll event stream listening methods. | 55 // Scroll event stream listening methods. |
56 void OnScrollBegin(); | 56 void OnScrollBegin(); |
57 void OnScrollEnd(const gfx::Vector2dF& velocity); | 57 void OnScrollEnd(const gfx::Vector2dF& velocity); |
58 | 58 |
59 // Scroll ack listener. The effect will only be activated if the initial | 59 // Scroll ack listener. The effect will only be activated if the initial |
60 // updates go unconsumed. | 60 // updates go unconsumed. |
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102 | 102 |
103 class Effect; | 103 class Effect; |
104 scoped_ptr<Effect> effect_; | 104 scoped_ptr<Effect> effect_; |
105 | 105 |
106 DISALLOW_COPY_AND_ASSIGN(OverscrollRefresh); | 106 DISALLOW_COPY_AND_ASSIGN(OverscrollRefresh); |
107 }; | 107 }; |
108 | 108 |
109 } // namespace content | 109 } // namespace content |
110 | 110 |
111 #endif // CONTENT_BROWSER_ANDROID_OVERSCROLL_REFRESH_H_ | 111 #endif // CONTENT_BROWSER_ANDROID_OVERSCROLL_REFRESH_H_ |
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