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// 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 "content/browser/attribution_reporting/attribution_input_event_tracker_android.h"
#include <jni.h>
#include <stdint.h>
#include <optional>
#include <tuple>
#include "base/android/scoped_java_ref.h"
#include "base/check.h"
#include "base/time/time.h"
#include "content/browser/web_contents/web_contents_android.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "ui/android/event_forwarder.h"
#include "ui/android/view_android.h"
#include "ui/events/android/motion_event_android.h"
namespace content {
AttributionInputEventTrackerAndroid::AttributionInputEventTrackerAndroid(
WebContents* web_contents) {
DCHECK(web_contents);
// Lazy initialization
std::ignore = static_cast<WebContentsImpl*>(web_contents)
->GetWebContentsAndroid()
->GetOrCreateEventForwarder(/*env=*/nullptr);
ui::EventForwarder* event_forwarder =
web_contents->GetNativeView()->event_forwarder();
DCHECK(event_forwarder);
// `this` will outlive `event_forwarder` in non-test code, therefore
// the observer doesn't need to be removed.
event_forwarder->AddObserver(this);
}
AttributionInputEventTrackerAndroid::~AttributionInputEventTrackerAndroid() =
default;
void AttributionInputEventTrackerAndroid::OnTouchEvent(
const ui::MotionEventAndroid& event) {
PushEvent(event);
}
void AttributionInputEventTrackerAndroid::PushEvent(
const ui::MotionEventAndroid& event) {
most_recent_event_ =
base::android::ScopedJavaGlobalRef<jobject>(event.GetJavaObject());
most_recent_event_id_ = event.GetUniqueEventId();
most_recent_event_cache_time_ = base::TimeTicks::Now();
}
AttributionInputEventTrackerAndroid::InputEvent
AttributionInputEventTrackerAndroid::GetMostRecentEvent() {
if (most_recent_event_cache_time_.is_null() ||
base::TimeTicks::Now() - most_recent_event_cache_time_ > kEventExpiry) {
most_recent_event_.Reset();
most_recent_event_id_.reset();
}
return AttributionInputEventTrackerAndroid::InputEvent(most_recent_event_id_,
most_recent_event_);
}
void AttributionInputEventTrackerAndroid::RemoveObserverForTesting(
WebContents* web_contents) {
DCHECK(web_contents);
ui::EventForwarder* event_forwarder =
web_contents->GetNativeView()->event_forwarder();
DCHECK(event_forwarder);
event_forwarder->RemoveObserver(this);
}
AttributionInputEventTrackerAndroid::InputEvent::InputEvent(
std::optional<uint32_t> id,
base::android::ScopedJavaGlobalRef<jobject> event)
: id(id), event(std::move(event)) {}
AttributionInputEventTrackerAndroid::InputEvent::~InputEvent() = default;
} // namespace content
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