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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_ASH_MAHI_WEB_CONTENTS_MAHI_TAB_HELPER_H_
#define CHROME_BROWSER_ASH_MAHI_WEB_CONTENTS_MAHI_TAB_HELPER_H_
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
namespace content {
class RenderWidgetHost;
class WebContents;
} // namespace content
namespace mahi {
// Tab helper to observer the focused tab changes on browser side.
class MahiTabHelper : public content::WebContentsUserData<MahiTabHelper>,
public content::WebContentsObserver {
public:
// Creates MahiTabHelper and attaches it the `web_contents` if mahi is
// enabled.
static void MaybeCreateForWebContents(content::WebContents* web_contents);
MahiTabHelper(const MahiTabHelper&) = delete;
MahiTabHelper& operator=(const MahiTabHelper&) = delete;
~MahiTabHelper() override = default;
// content::WebContentObserver:
void OnWebContentsFocused(
content::RenderWidgetHost* render_widget_host) override;
void OnWebContentsLostFocus(
content::RenderWidgetHost* render_widget_host) override;
void DocumentOnLoadCompletedInPrimaryMainFrame() override;
void WebContentsDestroyed() override;
private:
friend class content::WebContentsUserData<MahiTabHelper>;
// The only constructor is private because it will only be called by the
// WebContentsUserData.
explicit MahiTabHelper(content::WebContents* web_contents);
// Boolean to indicate if this web contents get focused. Only one web content
// can get focused at the same time.
bool focused_ = false;
WEB_CONTENTS_USER_DATA_KEY_DECL();
};
} // namespace mahi
#endif // CHROME_BROWSER_ASH_MAHI_WEB_CONTENTS_MAHI_TAB_HELPER_H_
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