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// Copyright 2020 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_TRANSLATE_PAGE_LOAD_METRICS_OBSERVER_H_
#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_TRANSLATE_PAGE_LOAD_METRICS_OBSERVER_H_
#include <memory>
#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
namespace translate {
class TranslateMetricsLogger;
} // namespace translate
namespace content {
class NavigationHandle;
} // namespace content
// Observer responsible for notifying Translate of the status of a page load.
// This information is used to log UKM and UMA metrics at a page load level, as
// well as tracking the time a page is in the foreground and either translated
// or not translated.
class TranslatePageLoadMetricsObserver
: public page_load_metrics::PageLoadMetricsObserver {
public:
static std::unique_ptr<TranslatePageLoadMetricsObserver> CreateIfNeeded(
content::WebContents* web_contents);
explicit TranslatePageLoadMetricsObserver(
std::unique_ptr<translate::TranslateMetricsLogger>
translate_metrics_logger);
~TranslatePageLoadMetricsObserver() override;
TranslatePageLoadMetricsObserver(const TranslatePageLoadMetricsObserver&) =
delete;
TranslatePageLoadMetricsObserver& operator=(
const TranslatePageLoadMetricsObserver&) = delete;
// page_load_metrics::PageLoadMetricsObserver
ObservePolicy OnStart(content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url,
bool started_in_foreground) override;
ObservePolicy OnPrerenderStart(content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url) override;
ObservePolicy OnFencedFramesStart(
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;
ObservePolicy OnShown() override;
ObservePolicy FlushMetricsOnAppEnterBackground(
const page_load_metrics::mojom::PageLoadTiming& timing) override;
void OnComplete(
const page_load_metrics::mojom::PageLoadTiming& timing) override;
void DidActivatePrerenderedPage(
content::NavigationHandle* navigation_handle) override;
private:
bool is_in_primary_page_ = false;
std::unique_ptr<translate::TranslateMetricsLogger> translate_metrics_logger_;
};
#endif // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_TRANSLATE_PAGE_LOAD_METRICS_OBSERVER_H_
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