Trait gio::FileInputStreamExt

pub trait FileInputStreamExt: 'static {
    fn query_info<P: IsA<Cancellable>>(
        &self, 
        attributes: &str, 
        cancellable: Option<&P>
    ) -> Result<FileInfo, Error>;
    fn query_info_async<P: IsA<Cancellable>, Q: FnOnce(Result<FileInfo, Error>) + Send + 'static>(
        &self, 
        attributes: &str, 
        io_priority: Priority, 
        cancellable: Option<&P>, 
        callback: Q
    );
    fn query_info_async_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<P: IsA<Cancellable>>(
    &self,
    attributes: &str,
    cancellable: Option<&P>
) -> 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 FileInputStreamExt::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: IsA<Cancellable>, Q: FnOnce(Result<FileInfo, Error>) + Send + 'static>(
    &self,
    attributes: &str,
    io_priority: Priority,
    cancellable: Option<&P>,
    callback: Q
)

Queries the stream information asynchronously. When the operation is finished callback will be called. You can then call FileInputStreamExt::query_info_finish to get the result of the operation.

For the synchronous version of this function, see FileInputStreamExt::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

user_data

the data to pass to callback function

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

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Implementors

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

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

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

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

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