Trait gio::prelude::FileInputStreamExt

pub trait FileInputStreamExt: 'static {
    // Required methods
    fn query_info(
        &self,
        attributes: &str,
        cancellable: Option<&impl IsA<Cancellable>>
    ) -> Result<FileInfo, Error>;
    fn query_info_async<P: FnOnce(Result<FileInfo, Error>) + 'static>(
        &self,
        attributes: &str,
        io_priority: Priority,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P
    );
    fn query_info_future(
        &self,
        attributes: &str,
        io_priority: Priority
    ) -> Pin<Box_<dyn Future<Output = Result<FileInfo, Error>> + 'static>>;
}

Trait containing all FileInputStream methods.

Implementors

FileInputStream

Required Methods

fn query_info( &self, attributes: &str, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<FileInfo, Error>

Queries a file input stream the given attributes. This function blocks while querying the stream. For the asynchronous (non-blocking) version of this function, see query_info_async(). While the stream is blocked, the stream will set the pending flag internally, and any other operations on the stream will fail with IOErrorEnum::Pending.

attributes

a file attribute query string.

cancellable

optional Cancellable object, None to ignore.

Returns

a FileInfo, or None on error.

fn query_info_async<P: FnOnce(Result<FileInfo, Error>) + 'static>( &self, attributes: &str, io_priority: Priority, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Queries the stream information asynchronously. When the operation is finished callback will be called. You can then call g_file_input_stream_query_info_finish() to get the result of the operation.

For the synchronous version of this function, see query_info().

If cancellable is not None, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error IOErrorEnum::Cancelled will be set

attributes

a file attribute query string.

io_priority

the [I/O priority][io-priority] of the request

cancellable

optional Cancellable object, None to ignore.

callback

callback to call when the request is satisfied

fn query_info_future( &self, attributes: &str, io_priority: Priority ) -> Pin<Box_<dyn Future<Output = Result<FileInfo, Error>> + 'static>>

Implementors

impl<O: IsA<FileInputStream>> FileInputStreamExt for O