Index: content/browser/renderer_host/input/touch_timeout_handler.h |
diff --git a/content/browser/renderer_host/input/touch_timeout_handler.h b/content/browser/renderer_host/input/touch_timeout_handler.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4c754992e333f602a3ed53a61079de42753cb1ec |
--- /dev/null |
+++ b/content/browser/renderer_host/input/touch_timeout_handler.h |
@@ -0,0 +1,89 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_TIMEOUT_HANDLER_H_ |
+#define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_TIMEOUT_HANDLER_H_ |
+ |
+#include <stddef.h> |
+#include <stdint.h> |
+ |
+#include <deque> |
+#include <list> |
+#include <memory> |
+ |
+#include "base/macros.h" |
+#include "base/time/time.h" |
+#include "content/browser/renderer_host/event_with_latency_info.h" |
+#include "content/browser/renderer_host/input/timeout_monitor.h" |
+#include "content/browser/renderer_host/input/touch_event_queue.h" |
+#include "content/common/content_export.h" |
+#include "content/common/input/input_event_ack_state.h" |
+#include "third_party/WebKit/public/platform/WebInputEvent.h" |
+#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.
|
+ |
+namespace content { |
+ |
+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.
|
+ |
+class TouchTimeoutHandler { |
+ public: |
+ TouchTimeoutHandler(TouchEventQueue* touch_queue, |
+ base::TimeDelta desktop_timeout_delay, |
+ base::TimeDelta mobile_timeout_delay); |
+ |
+ ~TouchTimeoutHandler(); |
+ |
+ void StartIfNecessary(const TouchEventWithLatencyInfo& event); |
+ bool ConfirmTouchEvent(uint32_t unique_touch_event_id, |
+ InputEventAckState ack_result); |
+ bool FilterEvent(const blink::WebTouchEvent& event); |
+ void SetEnabled(bool enabled); |
+ void SetUseMobileTimeout(bool use_mobile_timeout); |
+ bool IsTimeoutTimerRunning() const { return timeout_monitor_.IsRunning(); } |
+ bool IsEnabled() const { return enabled_ && !GetTimeoutDelay().is_zero(); } |
+ |
+ private: |
tdresser
2017/02/21 18:16:31
DISALLOW_COPY_AND_ASSIGN?
dtapuska
2017/02/21 18:26:47
Done.
|
+ enum PendingAckState { |
+ PENDING_ACK_NONE, |
+ PENDING_ACK_ORIGINAL_EVENT, |
+ PENDING_ACK_CANCEL_EVENT, |
+ }; |
+ |
+ void OnTimeOut(); |
+ // Skip a cancel event if the timed-out event had no consumer and was the |
+ // initial event in the gesture. |
+ bool AckedTimeoutEventRequiresCancel(InputEventAckState ack_result) const; |
+ void SetPendingAckState(PendingAckState new_pending_ack_state); |
+ void LogSequenceStartForUMA(); |
+ void LogSequenceEndForUMAIfNecessary(bool timed_out); |
+ base::TimeDelta GetTimeoutDelay() const; |
+ bool HasTimeoutEvent() const; |
+ |
+ TouchEventQueue* touch_queue_; |
+ |
+ // How long to wait on a touch ack before cancelling the touch sequence. |
+ const base::TimeDelta desktop_timeout_delay_; |
+ const base::TimeDelta mobile_timeout_delay_; |
+ bool use_mobile_timeout_; |
+ |
+ // The touch event source for which we expect the next ack. |
+ PendingAckState pending_ack_state_; |
+ |
+ // The event for which the ack timeout is triggered. |
+ TouchEventWithLatencyInfo timeout_event_; |
+ |
+ // Provides timeout-based callback behavior. |
+ TimeoutMonitor timeout_monitor_; |
+ |
+ bool enabled_; |
+ bool enabled_for_current_sequence_; |
+ |
+ // Bookkeeping to classify and log whether a touch sequence times out. |
+ bool sequence_awaiting_uma_update_; |
+ bool sequence_using_mobile_timeout_; |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_TIMEOUT_HANDLER_H_ |