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// 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_METRICS_DESKTOP_SESSION_DURATION_DESKTOP_SESSION_DURATION_OBSERVER_H_
#define CHROME_BROWSER_METRICS_DESKTOP_SESSION_DURATION_DESKTOP_SESSION_DURATION_OBSERVER_H_
#include "base/memory/raw_ptr.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "third_party/blink/public/common/input/web_input_event.h"
namespace metrics {
class DesktopSessionDurationTracker;
// Tracks user input events from web contents and notifies
// |DesktopSessionDurationTracker|.
class DesktopSessionDurationObserver
: public content::WebContentsObserver,
public content::WebContentsUserData<DesktopSessionDurationObserver>,
public content::RenderWidgetHost::InputEventObserver {
public:
DesktopSessionDurationObserver(content::WebContents* web_contents,
DesktopSessionDurationTracker* service);
DesktopSessionDurationObserver(const DesktopSessionDurationObserver&) =
delete;
DesktopSessionDurationObserver& operator=(
const DesktopSessionDurationObserver&) = delete;
~DesktopSessionDurationObserver() override;
static DesktopSessionDurationObserver* CreateForWebContents(
content::WebContents* web_contents);
private:
friend class content::WebContentsUserData<DesktopSessionDurationObserver>;
// Register / Unregister input event callback to given RenderFrameHost
void RegisterInputEventObserver(content::RenderFrameHost* host);
void UnregisterInputEventObserver(content::RenderFrameHost* host);
// content::RenderWidgetHost::InputEventObserver:
void OnInputEvent(const content::RenderWidgetHost& widget,
const blink::WebInputEvent& event) override;
// content::WebContentsObserver:
void RenderFrameHostChanged(content::RenderFrameHost* old_host,
content::RenderFrameHost* new_host) override;
raw_ptr<DesktopSessionDurationTracker> service_;
WEB_CONTENTS_USER_DATA_KEY_DECL();
};
} // namespace metrics
#endif // CHROME_BROWSER_METRICS_DESKTOP_SESSION_DURATION_DESKTOP_SESSION_DURATION_OBSERVER_H_
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