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// Copyright 2020 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_FILEAPI_FILE_CHANGE_SERVICE_H_
#define CHROME_BROWSER_ASH_FILEAPI_FILE_CHANGE_SERVICE_H_
#include "base/callback_list.h"
#include "base/observer_list.h"
#include "chrome/browser/ash/fileapi/file_change_service_observer.h"
#include "components/keyed_service/core/keyed_service.h"
class Profile;
namespace ash {
// A service which notifies observers of file change events from external file
// systems. This serves as a bridge to allow for observation of file system
// changes across all file system contexts within a browser context.
class FileChangeService : public KeyedService {
public:
explicit FileChangeService(Profile* profile);
FileChangeService(const FileChangeService& other) = delete;
FileChangeService& operator=(const FileChangeService& other) = delete;
~FileChangeService() override;
// Adds/removes the specified `observer` for service events.
void AddObserver(FileChangeServiceObserver* observer);
void RemoveObserver(FileChangeServiceObserver* observer);
// Notifies the service that a file identified by `url` has been modified.
void NotifyFileModified(const storage::FileSystemURL& url);
// Notifies the service that a file has been moved from `src` to `dst`.
void NotifyFileMoved(const storage::FileSystemURL& src,
const storage::FileSystemURL& dst);
// Notifies the service that a file has been created at `url` in fulfillment
// of a `window.showSaveFilePicker()` request from the given
// `file_picker_binding_context`.
//
// See `content::FileSystemAccessEntryFactory::BindingContext`.
void NotifyFileCreatedFromShowSaveFilePicker(
const GURL& file_picker_binding_context,
const storage::FileSystemURL& url);
private:
// Subscription to be notified of file creation events originating from
// `window.showSaveFilePicker()`.
base::CallbackListSubscription
file_created_from_show_save_file_picker_subscription_;
base::ObserverList<FileChangeServiceObserver> observer_list_;
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_FILEAPI_FILE_CHANGE_SERVICE_H_
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