chromium/third_party/blink/renderer/core/loader/anchor_element_interaction_tracker.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/loader/anchor_element_interaction_tracker.h"

#include "base/metrics/histogram_functions.h"
#include "base/strings/strcat.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/input/web_mouse_wheel_event.h"
#include "third_party/blink/public/common/input/web_pointer_properties.h"
#include "third_party/blink/public/mojom/preloading/anchor_element_interaction_host.mojom-blink.h"
#include "third_party/blink/public/platform/browser_interface_broker_proxy.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/event_type_names.h"
#include "third_party/blink/renderer/core/events/pointer_event.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/screen.h"
#include "third_party/blink/renderer/core/html/anchor_element_metrics.h"
#include "third_party/blink/renderer/core/html/anchor_element_metrics_sender.h"
#include "third_party/blink/renderer/core/pointer_type_names.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"

namespace blink {

namespace {
constexpr double eps = …;
const base::TimeDelta kMousePosQueueTimeDelta{ … };
const base::TimeDelta kMouseAccelerationAndVelocityInterval{ … };
}  // namespace

AnchorElementInteractionTracker::MouseMotionEstimator::MouseMotionEstimator(
    scoped_refptr<base::SingleThreadTaskRunner> task_runner)
    : … { … }

void AnchorElementInteractionTracker::MouseMotionEstimator::Trace(
    Visitor* visitor) const { … }

double AnchorElementInteractionTracker::MouseMotionEstimator::
    GetMouseTangentialAcceleration() const { … }

inline void AnchorElementInteractionTracker::MouseMotionEstimator::AddDataPoint(
    base::TimeTicks timestamp,
    gfx::PointF position) { … }
inline void
AnchorElementInteractionTracker::MouseMotionEstimator::RemoveOldDataPoints(
    base::TimeTicks now) { … }

void AnchorElementInteractionTracker::MouseMotionEstimator::Update() { … }

void AnchorElementInteractionTracker::MouseMotionEstimator::OnTimer(
    TimerBase*) { … }

void AnchorElementInteractionTracker::MouseMotionEstimator::OnMouseMoveEvent(
    gfx::PointF position) { … }

void AnchorElementInteractionTracker::MouseMotionEstimator::
    SetTaskRunnerForTesting(
        scoped_refptr<base::SingleThreadTaskRunner> task_runner,
        const base::TickClock* clock) { … }

AnchorElementInteractionTracker::AnchorElementInteractionTracker(
    Document& document)
    : … { … }

AnchorElementInteractionTracker::~AnchorElementInteractionTracker() = default;

void AnchorElementInteractionTracker::Trace(Visitor* visitor) const { … }

// static
bool AnchorElementInteractionTracker::IsFeatureEnabled() { … }

// static
bool AnchorElementInteractionTracker::IsMouseMotionEstimatorEnabled() { … }

// static
base::TimeDelta AnchorElementInteractionTracker::GetHoverDwellTime() { … }

void AnchorElementInteractionTracker::OnMouseMoveEvent(
    const WebMouseEvent& mouse_event) { … }

void AnchorElementInteractionTracker::OnPointerEvent(
    EventTarget& target,
    const PointerEvent& pointer_event) { … }

void AnchorElementInteractionTracker::OnClickEvent(
    HTMLAnchorElement& anchor,
    const MouseEvent& click_event) { … }

void AnchorElementInteractionTracker::OnScrollEnd() { … }

void AnchorElementInteractionTracker::HoverTimerFired(TimerBase*) { … }

void AnchorElementInteractionTracker::SetTaskRunnerForTesting(
    scoped_refptr<base::SingleThreadTaskRunner> task_runner,
    const base::TickClock* clock) { … }

HTMLAnchorElement*
AnchorElementInteractionTracker::FirstAnchorElementIncludingSelf(Node* node) { … }

KURL AnchorElementInteractionTracker::GetHrefEligibleForPreloading(
    const HTMLAnchorElement& anchor) { … }

}  // namespace blink