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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_INPUT_EVENT_WITH_CALLBACK_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_INPUT_EVENT_WITH_CALLBACK_H_
#include <list>
#include "third_party/blink/public/common/input/web_coalesced_input_event.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/widget/input/input_handler_proxy.h"
#include "ui/latency/latency_info.h"
namespace cc {
class EventMetrics;
}
namespace blink {
namespace test {
class InputHandlerProxyEventQueueTest;
}
class PLATFORM_EXPORT EventWithCallback {
public:
struct PLATFORM_EXPORT OriginalEventWithCallback {
OriginalEventWithCallback(
std::unique_ptr<WebCoalescedInputEvent> event,
std::unique_ptr<cc::EventMetrics> metrics,
InputHandlerProxy::EventDispositionCallback callback);
~OriginalEventWithCallback();
std::unique_ptr<WebCoalescedInputEvent> event_;
std::unique_ptr<cc::EventMetrics> metrics_;
InputHandlerProxy::EventDispositionCallback callback_;
};
using OriginalEventList = std::list<OriginalEventWithCallback>;
EventWithCallback(std::unique_ptr<WebCoalescedInputEvent> event,
InputHandlerProxy::EventDispositionCallback callback,
std::unique_ptr<cc::EventMetrics> metrics);
EventWithCallback(std::unique_ptr<WebCoalescedInputEvent> event,
OriginalEventList original_events);
~EventWithCallback();
[[nodiscard]] bool CanCoalesceWith(const EventWithCallback& other) const;
void CoalesceWith(EventWithCallback* other);
void RunCallbacks(InputHandlerProxy::EventDisposition,
const ui::LatencyInfo& latency,
std::unique_ptr<InputHandlerProxy::DidOverscrollParams>,
const WebInputEventAttribution&);
const WebInputEvent& event() const { return event_->Event(); }
WebInputEvent* event_pointer() { return event_->EventPointer(); }
const ui::LatencyInfo& latency_info() const { return event_->latency_info(); }
ui::LatencyInfo& latency_info() { return event_->latency_info(); }
void set_coalesced_scroll_and_pinch() { coalesced_scroll_and_pinch_ = true; }
bool coalesced_scroll_and_pinch() const {
return coalesced_scroll_and_pinch_;
}
size_t coalesced_count() const { return original_events_.size(); }
OriginalEventList& original_events() { return original_events_; }
// |first_original_event()| is used as ID for tracing.
WebInputEvent* first_original_event() {
return original_events_.empty()
? nullptr
: original_events_.front().event_->EventPointer();
}
void SetScrollbarManipulationHandledOnCompositorThread();
cc::EventMetrics* metrics() const {
return original_events_.empty() ? nullptr
: original_events_.front().metrics_.get();
}
// Removes metrics objects from all original events and returns the first one
// for latency reporting purposes.
std::unique_ptr<cc::EventMetrics> TakeMetrics();
// Called when the compositor thread starts/finishes processing the event so
// that the metrics can be updated with the appropriate timestamp. These are
// only called if the event has metrics.
void WillStartProcessingForMetrics();
void DidCompleteProcessingForMetrics();
private:
friend class test::InputHandlerProxyEventQueueTest;
std::unique_ptr<WebCoalescedInputEvent> event_;
OriginalEventList original_events_;
bool coalesced_scroll_and_pinch_ = false;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WIDGET_INPUT_EVENT_WITH_CALLBACK_H_
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