chromium/chrome/browser/page_load_metrics/observers/multi_tab_loading_page_load_metrics_observer.cc

// Copyright 2017 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/multi_tab_loading_page_load_metrics_observer.h"

#include "base/metrics/histogram_functions.h"
#include "build/build_config.h"
#include "chrome/browser/page_load_metrics/observers/histogram_suffixes.h"
#include "components/page_load_metrics/browser/page_load_metrics_util.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/web_contents.h"

#if BUILDFLAG(IS_ANDROID)
#include "chrome/browser/ui/android/tab_model/tab_model.h"
#include "chrome/browser/ui/android/tab_model/tab_model_list.h"
#else
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#endif

namespace {

void PageLoadHistogram(const std::string& name, base::TimeDelta sample) { … }

}  // namespace

namespace internal {

const char kHistogramPrefixMultiTabLoading[] = …;
const char kHistogramPrefixMultiTabLoading1OrMore[] = …;
const char kHistogramPrefixMultiTabLoading2OrMore[] = …;
const char kHistogramPrefixMultiTabLoading5OrMore[] = …;
const char kHistogramPrefixMultiTabLoading0[] = …;
const char kHistogramPrefixMultiTabLoading1[] = …;
const char kHistogramPrefixMultiTabLoading2[] = …;
const char kHistogramPrefixMultiTabLoading3[] = …;
const char kHistogramPrefixMultiTabLoading4[] = …;
const char kHistogramPrefixMultiTabLoading5[] = …;
const char kHistogramPrefixMultiTab0[] = …;
const char kHistogramPrefixMultiTab1[] = …;
const char kHistogramPrefixMultiTab2[] = …;
const char kHistogramPrefixMultiTab4[] = …;
const char kHistogramPrefixMultiTab8[] = …;
const char kHistogramPrefixMultiTab16[] = …;
const char kHistogramPrefixMultiTab32[] = …;
const char kHistogramPrefixMultiTab64[] = …;

}  // namespace internal

MultiTabLoadingPageLoadMetricsObserver::
    MultiTabLoadingPageLoadMetricsObserver() = default;

MultiTabLoadingPageLoadMetricsObserver::
    ~MultiTabLoadingPageLoadMetricsObserver() = default;

page_load_metrics::PageLoadMetricsObserver::ObservePolicy
MultiTabLoadingPageLoadMetricsObserver::OnStart(
    content::NavigationHandle* navigation_handle,
    const GURL& currently_committed_url,
    bool started_in_foreground) { … }

page_load_metrics::PageLoadMetricsObserver::ObservePolicy
MultiTabLoadingPageLoadMetricsObserver::OnFencedFramesStart(
    content::NavigationHandle* navigation_handle,
    const GURL& currently_committed_url) { … }

page_load_metrics::PageLoadMetricsObserver::ObservePolicy
MultiTabLoadingPageLoadMetricsObserver::OnPrerenderStart(
    content::NavigationHandle* navigation_handle,
    const GURL& currently_committed_url) { … }

#define RECORD_HISTOGRAM(condition, name) …

void MultiTabLoadingPageLoadMetricsObserver::OnFirstContentfulPaintInPage(
    const page_load_metrics::mojom::PageLoadTiming& timing) { … }

void MultiTabLoadingPageLoadMetricsObserver::
    OnFirstMeaningfulPaintInMainFrameDocument(
        const page_load_metrics::mojom::PageLoadTiming& timing) { … }

void MultiTabLoadingPageLoadMetricsObserver::OnDomContentLoadedEventStart(
    const page_load_metrics::mojom::PageLoadTiming& timing) { … }

void MultiTabLoadingPageLoadMetricsObserver::OnLoadEventStart(
    const page_load_metrics::mojom::PageLoadTiming& timing) { … }

void MultiTabLoadingPageLoadMetricsObserver::OnComplete(
    const page_load_metrics::mojom::PageLoadTiming& timing) { … }

page_load_metrics::PageLoadMetricsObserver::ObservePolicy
MultiTabLoadingPageLoadMetricsObserver::FlushMetricsOnAppEnterBackground(
    const page_load_metrics::mojom::PageLoadTiming& timing) { … }

void MultiTabLoadingPageLoadMetricsObserver::RecordTimingHistograms() { … }

void MultiTabLoadingPageLoadMetricsObserver::RecordHistograms(
    const char* suffix,
    base::TimeDelta sample) { … }

#if BUILDFLAG(IS_ANDROID)

int MultiTabLoadingPageLoadMetricsObserver::NumberOfTabsWithInflightLoad(
    content::NavigationHandle* navigation_handle) {
  content::WebContents* this_contents = navigation_handle->GetWebContents();
  int num_loading = 0;
  for (const TabModel* model : TabModelList::models()) {
    // Note: |this_contents| may not appear in |model|.
    for (int i = 0; i < model->GetTabCount(); ++i) {
      content::WebContents* other_contents = model->GetWebContentsAt(i);
      if (other_contents && other_contents != this_contents &&
          other_contents->IsLoading()) {
        num_loading++;
      }
    }
  }
  return num_loading;
}

int MultiTabLoadingPageLoadMetricsObserver::NumberOfTabs(
    content::NavigationHandle* navigation_handle) {
  int num_of_tabs = 0;
  for (const TabModel* model : TabModelList::models()) {
    num_of_tabs += model->GetTabCount();
  }
  return num_of_tabs;
}

#else  // BUILDFLAG(IS_ANDROID)

int MultiTabLoadingPageLoadMetricsObserver::NumberOfTabsWithInflightLoad(
    content::NavigationHandle* navigation_handle) { … }

int MultiTabLoadingPageLoadMetricsObserver::NumberOfTabs(
    content::NavigationHandle* navigation_handle) { … }

#endif  // BUILDFLAG(IS_ANDROID)