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1 // Copyright 2017 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 CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_TIMEOUT_HANDLER_H_ | |
6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_TIMEOUT_HANDLER_H_ | |
7 | |
8 #include <stddef.h> | |
9 #include <stdint.h> | |
10 | |
11 #include <deque> | |
12 #include <list> | |
13 #include <memory> | |
14 | |
15 #include "base/macros.h" | |
16 #include "base/time/time.h" | |
17 #include "content/browser/renderer_host/event_with_latency_info.h" | |
18 #include "content/browser/renderer_host/input/timeout_monitor.h" | |
19 #include "content/browser/renderer_host/input/touch_event_queue.h" | |
20 #include "content/common/content_export.h" | |
21 #include "content/common/input/input_event_ack_state.h" | |
22 #include "third_party/WebKit/public/platform/WebInputEvent.h" | |
23 #include "ui/gfx/geometry/point_f.h" | |
tdresser
2017/02/21 18:16:31
At least this include is unnecessary. Are there ot
dtapuska
2017/02/21 18:26:47
Done.
| |
24 | |
25 namespace content { | |
26 | |
27 class TouchEventQueue; | |
tdresser
2017/02/21 18:16:31
We're including this and forward declaring it curr
dtapuska
2017/02/21 18:26:47
Done.
| |
28 | |
29 class TouchTimeoutHandler { | |
30 public: | |
31 TouchTimeoutHandler(TouchEventQueue* touch_queue, | |
32 base::TimeDelta desktop_timeout_delay, | |
33 base::TimeDelta mobile_timeout_delay); | |
34 | |
35 ~TouchTimeoutHandler(); | |
36 | |
37 void StartIfNecessary(const TouchEventWithLatencyInfo& event); | |
38 bool ConfirmTouchEvent(uint32_t unique_touch_event_id, | |
39 InputEventAckState ack_result); | |
40 bool FilterEvent(const blink::WebTouchEvent& event); | |
41 void SetEnabled(bool enabled); | |
42 void SetUseMobileTimeout(bool use_mobile_timeout); | |
43 bool IsTimeoutTimerRunning() const { return timeout_monitor_.IsRunning(); } | |
44 bool IsEnabled() const { return enabled_ && !GetTimeoutDelay().is_zero(); } | |
45 | |
46 private: | |
tdresser
2017/02/21 18:16:31
DISALLOW_COPY_AND_ASSIGN?
dtapuska
2017/02/21 18:26:47
Done.
| |
47 enum PendingAckState { | |
48 PENDING_ACK_NONE, | |
49 PENDING_ACK_ORIGINAL_EVENT, | |
50 PENDING_ACK_CANCEL_EVENT, | |
51 }; | |
52 | |
53 void OnTimeOut(); | |
54 // Skip a cancel event if the timed-out event had no consumer and was the | |
55 // initial event in the gesture. | |
56 bool AckedTimeoutEventRequiresCancel(InputEventAckState ack_result) const; | |
57 void SetPendingAckState(PendingAckState new_pending_ack_state); | |
58 void LogSequenceStartForUMA(); | |
59 void LogSequenceEndForUMAIfNecessary(bool timed_out); | |
60 base::TimeDelta GetTimeoutDelay() const; | |
61 bool HasTimeoutEvent() const; | |
62 | |
63 TouchEventQueue* touch_queue_; | |
64 | |
65 // How long to wait on a touch ack before cancelling the touch sequence. | |
66 const base::TimeDelta desktop_timeout_delay_; | |
67 const base::TimeDelta mobile_timeout_delay_; | |
68 bool use_mobile_timeout_; | |
69 | |
70 // The touch event source for which we expect the next ack. | |
71 PendingAckState pending_ack_state_; | |
72 | |
73 // The event for which the ack timeout is triggered. | |
74 TouchEventWithLatencyInfo timeout_event_; | |
75 | |
76 // Provides timeout-based callback behavior. | |
77 TimeoutMonitor timeout_monitor_; | |
78 | |
79 bool enabled_; | |
80 bool enabled_for_current_sequence_; | |
81 | |
82 // Bookkeeping to classify and log whether a touch sequence times out. | |
83 bool sequence_awaiting_uma_update_; | |
84 bool sequence_using_mobile_timeout_; | |
85 }; | |
86 | |
87 } // namespace content | |
88 | |
89 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_TIMEOUT_HANDLER_H_ | |
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