// 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 CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_PROTOCOL_PAGE_LOAD_METRICS_OBSERVER_H_
#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_PROTOCOL_PAGE_LOAD_METRICS_OBSERVER_H_

#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
#include "components/page_load_metrics/browser/protocol_util.h"
#include "services/metrics/public/cpp/ukm_source.h"

class ProtocolPageLoadMetricsObserver
    : public page_load_metrics::PageLoadMetricsObserver {
 public:
  ProtocolPageLoadMetricsObserver() = default;

  ProtocolPageLoadMetricsObserver(const ProtocolPageLoadMetricsObserver&) =
      delete;
  ProtocolPageLoadMetricsObserver& operator=(
      const ProtocolPageLoadMetricsObserver&) = delete;

  // page_load_metrics::PageLoadMetricsObserver implementation:
  ObservePolicy OnStart(content::NavigationHandle* navigation_handle,
                        const GURL& currently_committed_url,
                        bool started_in_foreground) override;
  ObservePolicy OnFencedFramesStart(
      content::NavigationHandle* navigation_handle,
      const GURL& currently_committed_url) override;
  ObservePolicy OnPrerenderStart(content::NavigationHandle* navigation_handle,
                                 const GURL& currently_committed_url) override;
  ObservePolicy OnCommit(content::NavigationHandle* navigation_handle) override;
  ObservePolicy OnHidden(
      const page_load_metrics::mojom::PageLoadTiming& timing) override;
  void OnParseStart(
      const page_load_metrics::mojom::PageLoadTiming& timing) override;
  void OnFirstContentfulPaintInPage(
      const page_load_metrics::mojom::PageLoadTiming& timing) override;
  void OnFirstMeaningfulPaintInMainFrameDocument(
      const page_load_metrics::mojom::PageLoadTiming& timing) override;
  void OnDomContentLoadedEventStart(
      const page_load_metrics::mojom::PageLoadTiming& timing) override;
  void OnLoadEventStart(
      const page_load_metrics::mojom::PageLoadTiming& timing) override;

 private:
  friend class ProtocolPageLoadMetricsObserverTest;

  // The protocol for the committed navigation.
  page_load_metrics::NetworkProtocol protocol_ =
      page_load_metrics::NetworkProtocol::kOther;
};

#endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_PROTOCOL_PAGE_LOAD_METRICS_OBSERVER_H_