// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// fileManagerPrivate API.
// This is a private API used by the file browser of ChromeOS.
[platforms=("chromeos"),
 implemented_in="chrome/browser/chromeos/extensions/file_manager/file_manager_private_api_functions.h"]
namespace fileManagerPrivate {
// Type of the mounted volume.
enum VolumeType { drive, downloads, removable, archive, provided, mtp,
                  media_view, crostini, android_files, testing };

// Device type. Available if this is removable volume.
enum DeviceType { usb, sd, optical, mobile, unknown };

// Additional data about mount, for example, that the filesystem is not
// supported.
enum MountCondition { unknown, unsupported };

// Additional information of the context the volume was mounted.
enum MountContext { user, auto };

// Is the event raised for mounting or unmounting.
enum MountCompletedEventType { mount, unmount };

// Event type that tells listeners if mount was successful or an error
// occurred. It also specifies the error.
enum MountCompletedStatus {
  success,
  error_unknown,
  error_internal,
  error_invalid_argument,
  error_invalid_path,
  error_path_already_mounted,
  error_path_not_mounted,
  error_directory_creation_failed,
  error_invalid_mount_options,
  error_invalid_unmount_options,
  error_insufficient_permissions,
  error_mount_program_not_found,
  error_mount_program_failed,
  error_invalid_device_path,
  error_unknown_filesystem,
  error_unsupported_filesystem,
  error_invalid_archive,
  error_authentication,
  error_path_unmounted
};

// File transfer progress state.
enum TransferState { in_progress, completed, failed };

// The type of the progress event.
enum CopyProgressStatusType {
  // "begin_copy_entry" is fired for each entry (file or directory) before
  // starting the copy operation.
  begin_copy_entry,

  // "end_copy_entry" is fired for each entry (file or directory) after ending
  // the copy operation.
  end_copy_entry,

  // "progress" is fired periodically to report progress of a file copy (not
  // directory).
  progress,

  // "success" is fired after all entries are copied.
  success,

  // "error" is fired when an error occurs.
  error
};

// The response when starting installing a Linux package.
enum InstallLinuxPackageResponse {
  started,
  failed,
  install_already_active
};

// Specifies type of event that is raised.
enum FileWatchEventType { changed, error };

// Specifies type of change in file watch event.
enum ChangeType { add_or_update, delete };

// The type of entry that is needed. Default to ALL.
enum SearchType { EXCLUDE_DIRECTORIES, SHARED_WITH_ME, OFFLINE, ALL };

// Zooming mode.
enum ZoomOperationType { in, out, reset };

// Specifies how to open inspector.
enum InspectionType {
  // Open inspector for foreground page.
  normal,
  // Open inspector for foreground page and bring focus to the console.
  console,
  // Open inspector for foreground page in inspect element mode.
  element,
  // Open inspector for background page.
  background
};

// Device event type.
enum DeviceEventType {
  // If the device is disabled by preference.
  disabled,
  // Device is removed.
  removed,
  // Device is hard unplugged.
  hard_unplugged,
  // Format started.
  format_start,
  // Format succeeded.
  format_success,
  // Format failed.
  format_fail,
  // Rename started.
  rename_start,
  // Rename succeeded.
  rename_success,
  // Rename failed.
  rename_fail
};

// Drive sync error type.
// Keep it synced with DriveSyncErrorType in operation_observer.h.
enum DriveSyncErrorType {
  // Request to delete a file without permission.
  delete_without_permission,
  // Google Drive is temporarily unavailable.
  service_unavailable,
  // There is no server space to sync a file.
  no_server_space,
  // Miscellaneous errors other than listed above.
  misc
};

// Result of task execution.
enum TaskResult {
  // The task execution succeeded and a new window/tab was opened.
  opened,
  // The task execution succeeded and the message was sent to the proper
  // extension.
  message_sent,
  // The task execution failed.
  failed,
  // No URL is specified.
  empty
};

// Drive share type.
enum DriveShareType {
  can_edit,
  can_comment,
  can_view
};

// Names of properties for getEntryProperties().
enum EntryPropertyName {
  size,
  modificationTime,
  modificationByMeTime,
  thumbnailUrl,
  croppedThumbnailUrl,
  imageWidth,
  imageHeight,
  imageRotation,
  pinned,
  present,
  hosted,
  availableOffline,
  availableWhenMetered,
  dirty,
  customIconUrl,
  contentMimeType,
  sharedWithMe,
  shared,
  starred,
  externalFileUrl,
  alternateUrl,
  shareUrl,
  canCopy,
  canDelete,
  canRename,
  canAddChildren,
  canShare
};

// Entry property visibility for setEntryTag();
enum EntryTagVisibility {
  private,
  public
};

// Source of the volume data.
enum Source {
  file,
  device,
  network,
  system
};

// File handler verbs used to describe the action that an extension performs
// over a file or directory.
enum Verb {
  open_with,
  add_to,
  pack_with,
  share_with
};

// Recent file sources allowed in getRecentFiles().
enum SourceRestriction {
  // Allows any source.
  any_source,

  // Allows source with native local file system only.
  native_source,

  // Allows native source and Drive source.
  native_or_drive_source
};

// A file task represents an action that the file manager can perform over the
// currently selected files. See
// chrome/browser/chromeos/extensions/file_manager/file_tasks.h for details
// about how file tasks are handled.
dictionary FileTask {
  // The unique identifier of the task.
  DOMString taskId;

  // Task title (ex. App name).
  DOMString title;

  // The verb that will be used to indicate the action a task performs over
  // a file (ex. "open_with").
  Verb? verb;

  // Task icon url (from chrome://extension-icon/...)
  DOMString iconUrl;

  // True if this task is a default task for the selected files.
  boolean isDefault;

  // True if this task is from generic file handler. Generic file handler is a
  // file handler which handles any type of files (e.g. extensions: ["*"],
  // types: ["*/*"]). Partial wild card (e.g. types: ["image/*"]) is not
  // generic file handler.
  boolean isGenericFileHandler;
};

// Additional entry properties.
dictionary EntryProperties {
  // Size of this file.
  double? size;

  // Timestamp of entry update time, in milliseconds past the epoch.
  double? modificationTime;

  // Timestamp of entry update time by me, in milliseconds past the epoch.
  double? modificationByMeTime;

  // URL to the Drive thumbnail image for this file.
  DOMString? thumbnailUrl;

  // URL to the Drive cropped thumbnail image for this file.
  DOMString? croppedThumbnailUrl;

  // Width, if the entry is an image.
  long? imageWidth;

  // Height, if the entry is an image.
  long? imageHeight;

  // Rotation in clockwise degrees, if the entry is an image.
  long? imageRotation;

  // True if the file is pinned in cache.
  boolean? pinned;

  // True if the file is present in cache.
  boolean? present;

  // True if the file is hosted on a server instead of local.
  boolean? hosted;

  // True if the file is available offline.
  boolean? availableOffline;

  // True if the file is available on metered connection.
  boolean? availableWhenMetered;

  // True if the file has local change (has not been fully synced to the cloud).
  boolean? dirty;

  // URL to the custom icon for this file.
  DOMString? customIconUrl;

  // Drive MIME type for this file.
  DOMString? contentMimeType;

  // True if the entry is labeled as shared-with-me.
  boolean? sharedWithMe;

  // True if the entry is labeled as shared (either from me to others or to me
  // by others.)
  boolean? shared;

  // True if the entry is starred by the user.
  boolean? starred;

  // externalfile:// URL to open the file in browser.
  DOMString? externalFileUrl;

  // https:// URL to open the file or folder in the Drive website.
  DOMString? alternateUrl;

  // https:// URL to open the file or folder in the Drive website with the
  // sharing dialog open.
  DOMString? shareUrl;

  // True if the entry can be copied by the user.
  boolean? canCopy;

  // True if the entry can be deleted by the user.
  boolean? canDelete;

  // True if the entry can be renamed by the user.
  boolean? canRename;

  // True if the entry can have children added to it by the user (directories
  // only).
  boolean? canAddChildren;

  // True if the entry can be shared by the user.
  boolean? canShare;
};

// Information about total and remaining size on the mount point.
dictionary MountPointSizeStats {
  // Approximate total available size on the mount point.
  double totalSize;

  // Approximate remaining available size on the mount point.
  double remainingSize;
};

// Information about a profile.
dictionary ProfileInfo {
  // Profile ID. This is currently e-mail address of the profile.
  DOMString profileId;

  // The name of the profile for display purpose.
  DOMString displayName;

  // True if the profile is the one running the current file manager instance.
  // TODO(hirono): Remove the property because of the design change of
  // multi-profile suuport.
  boolean isCurrentProfile;
};

// Represents an icon in multiple dimensions. All are optional.
dictionary IconSet {
  DOMString? icon16x16Url;
  DOMString? icon32x32Url;
};

// Mounted disk volume metadata.
dictionary VolumeMetadata {
  // ID of the disk volume.
  DOMString volumeId;

  // Id the provided file system (for provided file systems).
  DOMString? fileSystemId;

  // ID of the provider, if the volume is backed by FSP.
  DOMString? providerId;

  // Source of the volume's data.
  Source source;

  // Label of the volume (if available).
  DOMString? volumeLabel;

  // Description of the profile where the volume belongs.
  // TODO(hirono): Remove the property because of the design change of
  // multi-profile support.
  ProfileInfo profile;

  // The path to the mounted device, archive file or network resource.
  DOMString? sourcePath;

  // Type of the mounted volume.
  VolumeType volumeType;

  // Device type. Available if this is removable volume.
  DeviceType? deviceType;

  // Path to identify the device. This is consistent with DeviceEvent's
  // devicePath.
  DOMString? devicePath;

  // Whether the device is parent or not (i.e. sdb rather than sdb1).
  boolean? isParentDevice;

  // Flag that specifies if volume is mounted in read-only mode.
  boolean isReadOnly;

  // Flag that specifies if the device is write-protected.
  // Valid only for the volumes of removable device partitions.
  boolean isReadOnlyRemovableDevice;

  // Flag that specifies whether the volume contains media.
  boolean hasMedia;

  // Flag that specifies whether the volume is configurable.
  boolean configurable;

  // Flag that specifies whether the volume is watchable.
  boolean watchable;

  // Additional data about mount, for example, that the filesystem is not
  // supported.
  MountCondition? mountCondition;

  // Context in which the volume has been mounted.
  MountContext? mountContext;

  // File system type indentifier.
  DOMString? diskFileSystemType;

  // Icons for the volume.
  IconSet iconSet;
};

// Payload data for mount event.
dictionary MountCompletedEvent {
  // Is the event raised for mounting or unmounting.
  MountCompletedEventType eventType;

  // Event type that tells listeners if mount was successful or an error
  // occurred. It also specifies the error.
  MountCompletedStatus status;

  // Metadata of the mounted volume.
  VolumeMetadata volumeMetadata;

  // Whether the volume event should be notified or not.
  boolean shouldNotify;
};

// Payload data for file transfer status updates.
dictionary FileTransferStatus {
  // URL of file that is being transfered.
  DOMString fileUrl;

  // File transfer progress state.
  TransferState transferState;

  // Approximated completed portion of the transfer operation.
  double processed;

  // Approximated total size of transfer operation.
  double total;

  // Total number of jobs.
  long num_total_jobs;

  // If true, hide when a job is completed when there are zero jobs in
  // progress. Otherwise, hide when one job is in progress.
  boolean hideWhenZeroJobs;
};

// Error during the drive sync.
dictionary DriveSyncErrorEvent {
  // Error type.
  DriveSyncErrorType type;

  // File URL of the entry that the error happens to.
  DOMString fileUrl;
};

// Payload data for copy status progress updates.
dictionary CopyProgressStatus {
  // The type of the progress event.
  CopyProgressStatusType type;

  // URL for the entry currently being copied. This field is particularly useful
  // when a directory copy is initiated with startCopy(). The field tells what
  // file/directory in that directory is now being copied.
  DOMString? sourceUrl;

  // URL for the entry currently being created. This field is particularly
  // useful when a directory copy is initiated with startCopy(). The field tells
  // what file/directory in that directory is being created. Available only for
  // end_copy_entry and success.
  DOMString? destinationUrl;

  // Number of processed bytes for the file currently being copied. Available
  // only for "progress" event. To show the progress bar, a caller needs to
  // pre-compute the size of files being copied for the file (not directory).
  double? size;

  // DOMError's name. Available only for ERROR event.
  DOMString? error;
};

// Detailed information of change.
dictionary FileChange {
  // URL of changed file (or directory).
  DOMString url;

  // Type of change, which may be multiple.
  ChangeType[] changes;
};

// Directory change notification details.
dictionary FileWatchEvent {
  // Specifies type of event that is raised.
  FileWatchEventType eventType;

  // An Entry object which represents a changed directory. The conversion into a
  // kind of FileEntry object is done in
  // file_browser_handler_custom_bindings.cc. For filesystem API's Entry
  // interface, see <a
  // href='http://www.w3.org/TR/file-system-api/#the-entry-interface'>The Entry
  // interface</a>.
  [instanceOf=Entry] object entry;

  // Detailed change information of change. It would be null if the detailed
  // information is not available.
  FileChange[]? changedFiles;
};

dictionary Preferences {
  boolean driveEnabled;
  boolean cellularDisabled;
  boolean hostedFilesDisabled;
  boolean searchSuggestEnabled;
  boolean use24hourClock;
  boolean allowRedeemOffers;
  DOMString timezone;
};

dictionary PreferencesChange {
  boolean? cellularDisabled;
  boolean? hostedFilesDisabled;
};

dictionary SearchParams {
  // Search query.
  DOMString query;

  // ID of the search feed that should be fetched next. Value passed here should
  // be gotten from previous searchDrive call. It can be empty for the initial
  // search request.
  DOMString nextFeed;
};

dictionary SearchMetadataParams {
  // Search query. It can be empty. Any filename matches to an empty query.
  DOMString query;

  // The type of entry that is needed. Default to ALL.
  SearchType types;

  // Maximum number of results.
  long maxResults;
};

// Entry and Drive-related properties representing a search result.
dictionary SearchResult {
  // A dictionary object which represents a Drive file. This will be converted
  // into a kind of FileEntry object. See
  // file_browser_handler_custom_bindings.cc for details. For filesystem API's
  // Entry interface, see <a
  // href='http://www.w3.org/TR/file-system-api/#the-entry-interface'>The Entry
  // interface</a>.
  [instanceOf=Entry] object entry;

  // The base name of a Drive file that matched the search query. The matched
  // sub strings are highlighted with <b> element. Meta characters are escaped
  // like &lt;.
  DOMString highlightedBaseName;
};

dictionary DriveConnectionState {
  DOMString type;

  // Reasons of offline.
  DOMString? reason;

  // Whether the device has a cellular network access or not. i.e. the |type|
  // can be 'metered' or not.
  boolean hasCellularNetworkAccess;
};

// Device event dispatched to listeners of onDeviceChaged.  See also
// DeviceEventType to know when the event dispatched.
dictionary DeviceEvent {
  // Event type of the device event.
  DeviceEventType type;
  // Device path to identify the device.
  DOMString devicePath;
};

// Describes an installed provider.
dictionary Provider {
  // ID of the provider.
  DOMString providerId;

  // Set of icons for the provider.
  IconSet iconSet;

  // Name of the provider.
  DOMString name;

  // Whether supports configuration dialog.
  boolean configurable;

  // Whether supports watching entries.
  boolean watchable;

  // Whether supports mounting multiple instances.
  boolean multipleMounts;

  // Source of file systems' data.
  manifestTypes.FileSystemProviderSource source;
};

// Callback that does not take arguments.
callback SimpleCallback = void();

// |result| Boolean result returned by the invoked function.
callback BooleanCallback = void(boolean result);

// |result| Result of the task execution.
callback ExecuteTaskCallback = void(TaskResult result);

// |tasks| The list of matched file entries for this task.
callback GetFileTasksCallback = void(FileTask[] tasks);

// |result| Mime type of the file.
callback GetMimeTypeCallback = void(DOMString result);

// |result| Hash containing the string assets.
callback GetStringsCallback = void(object result);

// |success| True when file watch is successfully added.
callback AddFileWatchCallback = void(optional boolean success);

// |success| True when file watch is successfully removed.
callback RemoveFileWatchCallback = void(optional boolean success);

// |entryProperties| A dictionary containing properties of the requested
// entries.
callback GetEntryPropertiesCallback =
    void(EntryProperties[] entryProperties);

// |sourcePath| Source path of the mount.
callback AddMountCallback = void(DOMString sourcePath);

callback MarkCacheAsMountedCallback = void();

// |volumeMetadataList| The list of VolumeMetadata representing mounted volumes.
callback GetVolumeMetadataListCallback =
    void(VolumeMetadata[] volumeMetadataList);

// |fileTransferCancelStatuses| The list of FileTransferCancelStatus.
callback CancelFileTransfersCallback =
    void(FileTransferCancelStatus[] fileTransferCancelStatuses);

// |copyId| ID of the copy task. Can be used to identify the progress, and to
// cancel the task.
callback StartCopyCallback = void(long copyId);

// |sizeStats| Name/value pairs of size stats. Will be undefined if stats could
// not be determined.
callback GetSizeStatsCallback = void(optional MountPointSizeStats sizeStats);

callback GetPreferencesCallback = void(Preferences result);

// |entries|
// |nextFeed| ID of the feed that contains next chunk of the search result.
//     Should be sent to the next searchDrive request to perform
//     incremental search.
callback SearchDriveCallback =
    void([instanceOf=Entry] object[] entries, DOMString nextFeed);

callback SearchDriveMetadataCallback = void(SearchResult[] results);

// |urls| The map of hash and array of FileEntry's URL. The array can be empty
// if the corresponding file is not found.
callback SearchFilesByHashesCallback = void(object urls);

callback ZipSelectionCallback = void(optional boolean success);

callback GetDriveConnectionStateCallback = void(DriveConnectionState result);

// |result| true if the length is in the valid range, false otherwise.
callback ValidatePathNameLengthCallback = void(boolean result);

// |accessToken| OAuth2 access token, or an empty string if failed to fetch.
callback RequestAccessTokenCallback = void(DOMString accessToken);

// |accessToken| OAuth2 access token, or an empty string if failed to fetch.
callback RequestWebStoreAccessTokenCallback = void(DOMString accessToken);

// |url| Result url.
callback GetUrlCallback = void(DOMString url);

// |profiles| List of profile information.
// |runningProfile| ID of the profile that runs the application instance.
// |showingProfile| ID of the profile that shows the application window.
callback GetProfilesCallback = void(ProfileInfo[] profiles,
                                    DOMString runningProfile,
                                    DOMString displayProfile);

// |entries| External entries.
callback ResolveEntriesCallback =
    void([instanceOf=Entry] object[] entries);

// |checksum| Result checksum.
callback ComputeChecksumCallback = void(DOMString checksum);

// |extensions| List of providers.
callback GetProvidersCallback = void(Provider[] extensions);

// |actions| List of actions.
callback GetCustomActionsCallback = void(fileSystemProvider.Action[] actions);

// |size| result size.
callback GetDirectorySizeCallback = void(double size);

// |entries| Recently modified entries.
callback GetRecentFilesCallback = void([instanceOf=Entry] object[] entries);

// |status| Result of starting the install
// |failure_reason| Reason for failure for a 'failed' status
callback InstallLinuxPackageCallback = void(
    InstallLinuxPackageResponse response, DOMString failure_reason);

interface Functions {
  // Logout the current user for navigating to the re-authentication screen for
  // the Google account.
  static void logoutUserForReauthentication();

  // Cancels file selection.
  static void cancelDialog();

  // Executes file browser task over selected files.
  // |taskId| The unique identifier of task to execute.
  // |entries| Array of entries
  // |callback|
  [nocompile]
  static void executeTask(DOMString taskId,
                          [instanceof=Entry] object[] entries,
                          ExecuteTaskCallback callback);

  // Sets the default task for the supplied MIME types and path extensions.
  // Lists of MIME types and URLs may contain duplicates. Additionally, the
  // list of MIME types can be empty.
  // |taskId| The unique identifier of task to mark as default.
  // |entries| Array of selected entries to extract path extensions from.
  // |mimeTypes| Array of selected file MIME types.
  // |callback|
  [nocompile]
  static void setDefaultTask(DOMString taskId,
                             [instanceof=Entry] object[] entries,
                             DOMString[] mimeTypes,
                             SimpleCallback callback);

  // Gets the list of tasks that can be performed over selected files.
  // |entries| Array of selected entries
  // |callback|
  [nocompile]
  static void getFileTasks([instanceof=Entry] object[] entries,
                           GetFileTasksCallback callback);

  // Gets the MIME type of a file.
  // |entry| Entry to be checked.
  // |callback|
  [nocompile]
  static void getMimeType([instanceof=Entry] object entry,
                          GetMimeTypeCallback callback);

  // Gets localized strings and initialization data.
  // |callback|
  static void getStrings(GetStringsCallback callback);

  // Adds file watch.
  // |entry| Entry to watch
  // |callback|
  [nocompile]
  static void addFileWatch([instanceof=Entry] object entry,
                           AddFileWatchCallback callback);

  // Removes file watch.
  // |entry| Watched entry
  // |callback|
  [nocompile]
  static void removeFileWatch([instanceof=Entry] object entry,
                              RemoveFileWatchCallback callback);

  // Enables the extenal file scheme necessary to initiate drags to the browser
  // window for files on the external backend.
  static void enableExternalFileScheme();

  // Requests granting R/W permissions for the passed entries. It's a best
  // effort operation. Some files may not be granted access if the url is
  // invalid or not backed by the external file system.
  // |entryUrls| Urls for the entries to be accessed.
  // |callback|
  static void grantAccess(DOMString[] entryUrls, SimpleCallback callback);

  // Selects multiple files.
  // |selectedPaths| Array of selected paths
  // |shouldReturnLocalPath| true if paths need to be resolved to local paths.
  // |callback|
  static void selectFiles(DOMString[] selectedPaths,
                          boolean shouldReturnLocalPath,
                          SimpleCallback callback);

  // Selects a file.
  // |selectedPath| A selected path
  // |index| Index of Filter
  // |forOpening| true if paths are selected for opening. false if for saving.
  // |shouldReturnLocalPath| true if paths need to be resolved to local paths.
  // |callback|
  static void selectFile(DOMString selectedPath,
                         long index,
                         boolean forOpening,
                         boolean shouldReturnLocalPath,
                         SimpleCallback callback);

  // Requests additional properties for files.
  // |entries| list of entries
  // |names| list of requested properties by their names.
  // |callback| Completion callback. May return less than requested properties
  //     if some are not available. In the same time, it can return properties
  //     which were not requested (if it's cheap to compute them).
  [nocompile]
  static void getEntryProperties(
      [instanceOf=Entry] object[] entries,
      EntryPropertyName[] names,
      GetEntryPropertiesCallback callback);

  // Pins/unpins a Drive file in the cache.
  // |entry| Entry to pin/unpin.
  // |pin| Pass true to pin the file.
  // |callback| Completion callback. $(ref:runtime.lastError) will be set if
  //     there was an error.
  [nocompile]
  static void pinDriveFile([instanceof=Entry] object entry,
                           boolean pin,
                           SimpleCallback callback);

  // If |entry| is a Drive file, ensures the file is downloaded to the cache.
  // Otherwise, finishes immediately in success. For example, when the file is
  // under Downloads, MTP, removeable media, or provided by extensions for
  // other cloud storage services than Google Drive, this does nothing.
  // This is a workaround to avoid intermittent and duplicated downloading of
  // a Drive file by current implementation of Drive integration when an
  // extension reads a file sequentially but intermittently.
  // |entry| A regular file entry to be read.
  // |callback| Callback called after having the file in cache.
  //     $(ref:runtime.lastError) will be set if there was an error.
  [nocompile]
  static void ensureFileDownloaded([instanceof=Entry] object entry,
                           SimpleCallback callback);

  // Resolves entries in the isolated file system and returns corresponding
  // entries in the external file system mounted to Chrome OS file manager
  // backend. If resolving entry fails, the entry will be just ignored and the
  // corresponding entry does not appear in the result.
  [nocompile]
  static void resolveIsolatedEntries(
      [instanceOf=Entry] object[] entries,
      ResolveEntriesCallback callback);

  // Mount a resource or a file.
  // |source| Mount point source. For compressed files it is relative file path
  //     within external file system
  // |callback|
  static void addMount(DOMString source, AddMountCallback callback);

  // Unmounts a mounted resource.
  // |volumeId| An ID of the volume.
  static void removeMount(DOMString volumeId);

  // Marks a cache file of Drive as mounted or unmounted.
  // Does nothing if the file is not under Drive directory.
  // |sourcePath| Mounted source file. Relative file path within external file
  //     system.
  // |isMounted| Mark as mounted if true. Mark as unmounted otherwise.
  // |callback| Completion callback. $(ref:runtime.lastError) will be set if
  //     there was an error.
  static void markCacheAsMounted(DOMString sourcePath, boolean isMounted,
      MarkCacheAsMountedCallback callback);

  // Get the list of mounted volumes.
  // |callback|
  static void getVolumeMetadataList(GetVolumeMetadataListCallback callback);

  // Cancels ongoing file transfers for selected files.
  // |entries| Array of files for which ongoing transfer should be canceled.
  // |callback| Completion callback of the cancel.
  [nocompile]
  static void cancelFileTransfers([instanceof=Entry] object[] entries,
                                  SimpleCallback callback);

  // Cancels all ongoing file transfers.
  // |callback| Completion callback of the cancel.
  static void cancelAllFileTransfers(SimpleCallback callback);

  // Starts to copy an entry. If the source is a directory, the copy is done
  // recursively.
  // |entry| Entry of the source entry to be copied.
  // |parentEntry| Entry for the destination (parent) directory.
  // |newName| Name of the new entry. It must not contain '/'.
  // |callback| Completion callback.
  [nocompile]
  static void startCopy([instanceof=Entry] object entry,
                        [instanceof=DirectoryEntry] object parentEntry,
                        DOMString newName,
                        StartCopyCallback callback);

  // Cancels the running copy task.
  // |copyId| ID of the copy task to be cancelled.
  // |callback| Completion callback of the cancel.
  static void cancelCopy(long copyId, SimpleCallback callback);

  // Retrieves total and remaining size of a mount point.
  // |volumeId| ID of the volume to be checked.
  // |callback|
  static void getSizeStats(DOMString volumeId, GetSizeStatsCallback callback);

  // Formats a mounted volume.
  // |volumeId| ID of the volume to be formatted.
  static void formatVolume(DOMString volumeId);

  // Renames a mounted volume.
  // |volumeId| ID of the volume to be renamed.
  // |newName| New name of the target volume.
  static void renameVolume(DOMString volumeId, DOMString newName);

  // Retrieves file manager preferences.
  // |callback|
  static void getPreferences(GetPreferencesCallback callback);

  // Sets file manager preferences.
  // |changeInfo|
  static void setPreferences(PreferencesChange changeInfo);

  // Performs drive content search.
  // |searchParams|
  // |callback|
  static void searchDrive(SearchParams searchParams,
                          SearchDriveCallback callback);

  // Performs drive metadata search.
  // |searchParams|
  // |callback|
  static void searchDriveMetadata(SearchMetadataParams searchParams,
                                  SearchDriveMetadataCallback callback);

  // Search files in the volume having |volumeId| by using |hashList|.
  // sub-directories) the given |targetDirectoryUrl|.
  static void searchFilesByHashes(DOMString volumeId,
                                  DOMString[] hashList,
                                  SearchFilesByHashesCallback callback);

  // Create a zip file for the selected files.
  // |parentEntry| Entry of the directory containing the selected files.
  // |entries| Entries of the selected files. The files must be under the
  //     directory specified by |parentEntry|.
  // |destName| Name of the destination zip file. The zip file will be created
  //     under the directory specified by |parentEntry|.
  // |callback|
  [nocompile]
  static void zipSelection([instanceof=Entry] object[] entries,
                           [instanceof=DirectoryEntry] object parentEntry,
                           DOMString destName,
                           ZipSelectionCallback callback);

  // Retrieves the state of the current drive connection.
  // |callback|
  static void getDriveConnectionState(GetDriveConnectionStateCallback callback);

  // Checks whether the path name length fits in the limit of the filesystem.
  // |parentEntry| The entry of the parent directory entry.
  // |name| The name of the file.
  // |callback| Called back when the check is finished.
  [nocompile]
  static void validatePathNameLength(
      [instanceof=DirectoryEntry] object parentEntry,
      DOMString name,
      ValidatePathNameLengthCallback callback);

  // Changes the zoom factor of the Files app.
  // |operation| Zooming mode.
  static void zoom(ZoomOperationType operation);

  // Requests a Drive API OAuth2 access token.
  // |refresh| Whether the token should be refetched instead of using the cached
  //     one.
  // |callback|
  static void requestAccessToken(boolean refresh,
                                 RequestAccessTokenCallback callback);

  // Requests a Webstore API OAuth2 access token.
  // |callback|
  static void requestWebStoreAccessToken(
      RequestWebStoreAccessTokenCallback callback);

  // Requests a share dialog url for the specified file.
  // |entry| The entry to share.
  // |callback|
  [nocompile]
  static void getShareUrl([instanceof=Entry] object entry,
                          GetUrlCallback callback);

  // Requests a download url to download the file contents.
  // |entry| The entry to download.
  // |callback|
  [nocompile]
  static void getDownloadUrl([instanceof=Entry] object entry,
                             GetUrlCallback callback);

  // Requests to share drive files.
  // |entry| Entry to be shared.
  // |shareType| Type of access that is getting granted.
  [nocompile]
  static void requestDriveShare([instanceof=Entry] object entry,
                                DriveShareType shareType,
                                SimpleCallback callback);

  // Obtains a list of profiles that are logged-in.
  static void getProfiles(GetProfilesCallback callback);

  // Opens inspector window.
  // |type| InspectionType which specifies how to open inspector.
  static void openInspector(InspectionType type);

  // Opens page in Settings window.
  // |sub_page| Name of a sub_page to show.
  static void openSettingsSubpage(DOMString sub_page);

  // Computes an MD5 checksum for the given file.
  // |entry| The entry of the file to checksum.
  // |callback|
  [nocompile]
  static void computeChecksum([instanceof=Entry] object entry,
                              ComputeChecksumCallback callback);

  // Is UMA enabled?
  static void isUMAEnabled(BooleanCallback callback);

  // Sets a tag on a file or a directory. Only Drive files are supported.
  [nocompile]
  static void setEntryTag([instanceof=Entry] object entry,
                          EntryTagVisibility visibility,
                          DOMString key,
                          DOMString value,
                          SimpleCallback callback);

  // Returns if Piex loader is enabled.
  static void isPiexLoaderEnabled(BooleanCallback callback);

  // Returns list of available providers.
  static void getProviders(GetProvidersCallback callback);

  // Requests adding a new provided file system. If not possible, then an error
  // via chrome.runtime.lastError is returned.
  static void addProvidedFileSystem(DOMString provider_id,
                                    SimpleCallback callback);

  // Requests configuring an existing volume. If not possible, then returns
  // an error via chrome.runtime.lastError.
  static void configureVolume(DOMString volumeId, SimpleCallback callback);

  // Requests list of custom actions for the specified entries. If not possible,
  // then an error via chrome.runtime.lastError is returned.
  [nocompile]
  static void getCustomActions([instanceof=Entry] object[] entries,
                               GetCustomActionsCallback callback);

  // Executes a custom action for a set of entries. If not possible, then an
  // error via chrome.runtime.lastError is returned.
  [nocompile]
  static void executeCustomAction([instanceof=Entry] object[] entries,
                                  DOMString actionId,
                                  SimpleCallback callback);

  // Get the total size of a directory.
  // |entry| Entry of the target directory.
  // |callback|
  [nocompile]
  static void getDirectorySize([instanceof=DirectoryEntry] object entry,
                               GetDirectorySizeCallback callback);

  // Gets recently modified files across file systems.
  // |restriction| Flag to restrict sources of recent files.
  // |callback|
  [nocompile]
  static void getRecentFiles(SourceRestriction restriction,
                             GetRecentFilesCallback callback);

  // Returns true if crostini is enabled.
  // |callback|
  static void isCrostiniEnabled(BooleanCallback callback);

  // Starts and mounts crostini container.
  // |callback|
  static void mountCrostiniContainer(SimpleCallback callback);

  // Starts installation of a Linux package.
  [nocompile]
  static void installLinuxPackage([instanceof=Entry] object entry,
                                  InstallLinuxPackageCallback callback);
};

interface Events {
  static void onMountCompleted(MountCompletedEvent event);

  static void onFileTransfersUpdated(FileTransferStatus event);

  static void onCopyProgress(long copyId, CopyProgressStatus status);

  static void onDirectoryChanged(FileWatchEvent event);

  static void onPreferencesChanged();

  static void onDriveConnectionStatusChanged();

  static void onDeviceChanged(DeviceEvent event);

  static void onDriveSyncError(DriveSyncErrorEvent event);

  static void onAppsUpdated();
};
};
