chromium/chrome/browser/web_applications/locks/shared_web_contents_lock.h

// Copyright 2022 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_WEB_APPLICATIONS_LOCKS_SHARED_WEB_CONTENTS_LOCK_H_
#define CHROME_BROWSER_WEB_APPLICATIONS_LOCKS_SHARED_WEB_CONTENTS_LOCK_H_

#include <memory>

#include "base/memory/weak_ptr.h"
#include "chrome/browser/web_applications/locks/lock.h"
#include "chrome/browser/web_applications/locks/with_shared_web_contents_resources.h"

namespace content {
class WebContents;
}  // namespace content

namespace web_app {

struct PartitionedLockHolder;
class WebAppLockManager;

// This locks the background shared web contents that is used by the
// WebAppProvider system to do operations in the background that require a web
// contents, like install web apps and fetch data.
//
// Locks can be acquired by using the `WebAppLockManager`.
class SharedWebContentsLockDescription : public LockDescription { … };

// Holding this locks means you have exclusive access to a background web
// contents that is shared by the WebAppProvider system.
// The web contents will be prepared for use via
// WebAppUrlLoader::PrepareForLoad() prior to being granted access.
//
// See `WebAppLockManager` for how to use locks. Destruction of this class will
// release the lock or cancel the lock request if it is not acquired yet.
//
// Note: Accessing a lock will CHECK-fail if the WebAppProvider system has
// shutdown (or the profile has shut down).
class SharedWebContentsLock : public Lock,
                              public WithSharedWebContentsResources { … };

}  // namespace web_app

#endif  // CHROME_BROWSER_WEB_APPLICATIONS_LOCKS_SHARED_WEB_CONTENTS_LOCK_H_