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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_WEBUI_TOP_CHROME_PER_PROFILE_WEBUI_TRACKER_H_
#define CHROME_BROWSER_UI_WEBUI_TOP_CHROME_PER_PROFILE_WEBUI_TRACKER_H_
#include <memory>
#include <string>
#include "base/observer_list_types.h"
namespace content {
class WebContents;
} // namespace content
class Profile;
// PerProfileWebUITracker tracks WebUIs associated with a profile. It provides
// an API to query if a profile has any WebUI instances of a given URL. This
// class considers only the existence of a WebUI's WebContents, ignoring its
// status.
class PerProfileWebUITracker {
public:
class Observer : public base::CheckedObserver {
public:
// Called when a tracked WebContents is destroyed.
virtual void OnWebContentsDestroyed(content::WebContents* web_contents) = 0;
// Called when a tracked WebContents' primary page changed.
virtual void OnWebContentsPrimaryPageChanged(
content::WebContents* web_contents) = 0;
};
static std::unique_ptr<PerProfileWebUITracker> Create();
virtual ~PerProfileWebUITracker() = default;
// Starts tracking `web_contents`.
// This class automatically handles the destruction of WebContents, so manual
// handling is not needed.
virtual void AddWebContents(content::WebContents* web_contents) = 0;
// Returns true if a WebUI with the specified URL exists within the profile.
// This includes all WebContents, regardless of their visibility, hidden
// state, crash state, preload state, or any errors.
virtual bool ProfileHasWebUI(Profile* profile,
const std::string& webui_url) const = 0;
// Returns true if a WebUI with the specified URL exists within the profile
// and is in the background, i.e. it is preloaded and pending to be shown.
// Note that a preloaded WebUI is not equivalent to a background WebUI. A
// foreground WebUI may be preloaded before it is shown, in which case
// WebUIContentsPreloadState::preloaded is true.
virtual bool ProfileHasBackgroundWebUI(Profile* profile,
const std::string& webui_url) const = 0;
// Adds an observer that will be notified of tracked WebContents destroy.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
};
#endif // CHROME_BROWSER_UI_WEBUI_TOP_CHROME_PER_PROFILE_WEBUI_TRACKER_H_
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