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// Copyright 2024 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_UI_PERFORMANCE_CONTROLS_TAB_RESOURCE_USAGE_COLLECTOR_H_
#define CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_TAB_RESOURCE_USAGE_COLLECTOR_H_
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "chrome/browser/resource_coordinator/tab_load_tracker.h"
#include "components/performance_manager/public/resource_attribution/queries.h"
namespace base {
template <typename T>
class NoDestructor;
}
namespace content {
class WebContents;
}
class TabResourceUsageCollector
: public resource_attribution::QueryResultObserver,
public resource_coordinator::TabLoadTracker::Observer {
public:
class Observer : public base::CheckedObserver {
public:
// Raised after the tab resource metrics have refreshed through an immediate
// or periodic query made by the TabResourceUsageCollector
virtual void OnTabResourceMetricsRefreshed() = 0;
};
~TabResourceUsageCollector() override;
static TabResourceUsageCollector* Get();
void AddObserver(Observer* o);
void RemoveObserver(Observer* o);
void ImmediatelyRefreshMetrics(content::WebContents* web_contents);
void ImmediatelyRefreshMetricsForAllTabs();
// resource_attribution::QueryResultObserver:
void OnResourceUsageUpdated(
const resource_attribution::QueryResultMap& results) override;
// resource_coordinator::TabLoadTracker::Observer:
void OnLoadingStateChange(content::WebContents* web_contents,
LoadingState old_loading_state,
LoadingState new_loading_state) override;
private:
friend base::NoDestructor<TabResourceUsageCollector>;
TabResourceUsageCollector();
resource_attribution::ScopedResourceUsageQuery scoped_query_;
resource_attribution::ScopedQueryObservation query_observer_{this};
base::ObserverList<Observer> observers_;
base::ScopedObservation<resource_coordinator::TabLoadTracker,
resource_coordinator::TabLoadTracker::Observer>
load_state_observer_{this};
};
#endif // CHROME_BROWSER_UI_PERFORMANCE_CONTROLS_TAB_RESOURCE_USAGE_COLLECTOR_H_
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