Trait AsyncResultExt 

pub trait AsyncResultExt: IsA<AsyncResult> + 'static {
    // Provided methods
    fn source_object(&self) -> Option<Object> { ... }
    fn legacy_propagate_error(&self) -> Result<(), Error> { ... }
}

Trait containing all AsyncResult methods.

Implementors

AsyncResult, Task

Provided Methods

fn source_object(&self) -> Option<Object>

Gets the source object from a AsyncResult.

Returns

a new reference to the source object for the @self, or NULL if there is none.

fn legacy_propagate_error(&self) -> Result<(), Error>

If @self is a Gio::SimpleAsyncResult, this is equivalent to Gio::SimpleAsyncResult::propagate_error(). Otherwise it returns FALSE.

This can be used for legacy error handling in async *_finish() wrapper functions that traditionally handled Gio::SimpleAsyncResult error returns themselves rather than calling into the virtual method. This should not be used in new code; AsyncResult errors that are set by virtual methods should also be extracted by virtual methods, to enable subclasses to chain up correctly.

Returns

TRUE if @error is has been filled in with an error from @self, FALSE if not.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<O> AsyncResultExt for O

where O: IsA<AsyncResult>,