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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/page_load_metrics/observers/foreground_duration_ukm_observer.h"
#include "base/time/time.h"
#include "components/page_load_metrics/browser/page_load_metrics_observer_delegate.h"
#include "components/page_load_metrics/browser/page_load_metrics_util.h"
#include "components/page_load_metrics/common/page_load_timing.h"
#include "content/public/browser/navigation_handle.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "services/metrics/public/cpp/ukm_source.h"
ForegroundDurationUKMObserver::ForegroundDurationUKMObserver()
: last_page_input_timing_(page_load_metrics::mojom::InputTiming::New()) {}
ForegroundDurationUKMObserver::~ForegroundDurationUKMObserver() = default;
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
ForegroundDurationUKMObserver::OnStart(
content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url,
bool started_in_foreground) {
currently_in_foreground_ = started_in_foreground;
if (currently_in_foreground_) {
last_time_shown_ = navigation_handle->NavigationStart();
}
return CONTINUE_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
ForegroundDurationUKMObserver::OnFencedFramesStart(
content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url) {
// This class doesn't use information on subframes and inner pages. No need to
// forward.
return STOP_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
ForegroundDurationUKMObserver::OnPrerenderStart(
content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url) {
return CONTINUE_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
ForegroundDurationUKMObserver::FlushMetricsOnAppEnterBackground(
const page_load_metrics::mojom::PageLoadTiming& timing) {
RecordUkmIfInForeground(base::TimeTicks::Now());
return CONTINUE_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
ForegroundDurationUKMObserver::OnHidden(
const page_load_metrics::mojom::PageLoadTiming& timing) {
RecordUkmIfInForeground(base::TimeTicks::Now());
return CONTINUE_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
ForegroundDurationUKMObserver::OnShown() {
if (!currently_in_foreground_) {
last_time_shown_ = base::TimeTicks::Now();
currently_in_foreground_ = true;
}
return CONTINUE_OBSERVING;
}
void ForegroundDurationUKMObserver::OnComplete(
const page_load_metrics::mojom::PageLoadTiming& timing) {
// If we have a page_end_time, use it as our end time, else fall back to the
// current time. Note that we expect page_end_time.has_value() to always be
// true in OnComplete (the PageLoadTracker destructor is supposed to guarantee
// it), but we use Now() as a graceful fallback just in case.
base::TimeTicks end_time =
GetDelegate().GetPageEndReason() != page_load_metrics::END_NONE
? GetDelegate().GetPageEndTime()
: base::TimeTicks::Now();
RecordUkmIfInForeground(end_time);
}
void ForegroundDurationUKMObserver::RecordUkmIfInForeground(
base::TimeTicks end_time) {
if (!currently_in_foreground_)
return;
if (GetDelegate().GetPrerenderingState() ==
page_load_metrics::PrerenderingState::kInPrerendering) {
return;
}
base::TimeDelta foreground_duration = end_time - last_time_shown_;
ukm::builders::PageForegroundSession ukm_builder(
GetDelegate().GetPageUkmSourceId());
ukm::UkmRecorder* ukm_recorder = ukm::UkmRecorder::Get();
ukm_builder.SetForegroundDuration(foreground_duration.InMilliseconds());
ukm_builder.Record(ukm_recorder);
currently_in_foreground_ = false;
}
void ForegroundDurationUKMObserver::DidActivatePrerenderedPage(
content::NavigationHandle* navigation_handle) {
if (GetDelegate().WasPrerenderedThenActivatedInForeground()) {
last_time_shown_ = base::TimeTicks::Now();
currently_in_foreground_ = true;
} else {
currently_in_foreground_ = false;
}
}
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