Struct FallbackStorageProvider 

pub struct FallbackStorageProvider { /* private fields */ }

A storage provider that forwards each request to the first of a list of lazily created providers that can serve it.

This is an implementation detail of the platform backends.

Implementations

impl FallbackStorageProvider

pub fn new(factories: Vec<StorageProviderFactory>) -> Self

Creates a provider over the given factories, which are tried in order and at most once each.

pub fn reset(&self, factories: Vec<StorageProviderFactory>)

Replaces the factories and forgets the providers created so far.

Trait Implementations

impl IStorageProvider for FallbackStorageProvider

fn can_open(&self) -> bool

Returns true if it is possible to open a file picker on the current platform.

fn can_save(&self) -> bool

Returns true if it is possible to open a save file picker on the current platform.

fn can_pick_folder(&self) -> bool

Returns true if it is possible to open a folder picker on the current platform.

fn open_file_picker_async( &self, options: FilePickerOpenOptions, ) -> LocalBoxFuture<Result<Vec<Rc<dyn IStorageFile>>>>

Opens a file picker dialog.

fn open_file_picker_with_result_async( &self, options: FilePickerOpenOptions, ) -> LocalBoxFuture<Result<OpenFilePickerResult>>

Opens a file picker dialog and returns the selected files along with additional information.

fn save_file_picker_async( &self, options: FilePickerSaveOptions, ) -> LocalBoxFuture<Result<Option<Rc<dyn IStorageFile>>>>

Opens a save file picker dialog.

fn save_file_picker_with_result_async( &self, options: FilePickerSaveOptions, ) -> LocalBoxFuture<Result<SaveFilePickerResult>>

Opens a save file picker dialog and returns the selected file along with additional information.

fn open_folder_picker_async( &self, options: FolderPickerOpenOptions, ) -> LocalBoxFuture<Result<Vec<Rc<dyn IStorageFolder>>>>

Opens a folder picker dialog.

fn open_file_bookmark_async( &self, bookmark: &str, ) -> LocalBoxFuture<Option<Rc<dyn IStorageBookmarkFile>>>

Opens an IStorageBookmarkFile from the bookmark ID.

fn open_folder_bookmark_async( &self, bookmark: &str, ) -> LocalBoxFuture<Option<Rc<dyn IStorageBookmarkFolder>>>

Opens an IStorageBookmarkFolder from the bookmark ID.

fn try_get_file_from_path_async( &self, file_path: &Uri, ) -> LocalBoxFuture<Option<Rc<dyn IStorageFile>>>

Attempts to read a file from the file-system by its path.

fn try_get_folder_from_path_async( &self, folder_path: &Uri, ) -> LocalBoxFuture<Option<Rc<dyn IStorageFolder>>>

Attempts to read a folder from the file-system by its path.

fn try_get_well_known_folder_async( &self, well_known_folder: WellKnownFolder, ) -> LocalBoxFuture<Option<Rc<dyn IStorageFolder>>>

Attempts to read a folder from the file-system by its well-known folder identifier.

fn is_file_system_backed(&self) -> bool

Whether the provider is the file-system backed one (C# provider is BclStorageProvider).