Struct gio::LocalTask

pub struct LocalTask<V: ValueType> { /* private fields */ }

LocalTask provides idiomatic access to gio’s GTask API, for instance by being generic over their value type, while not completely departing from the underlying C API. LocalTask does not require its value to be Send and Sync and thus is useful to to implement gio style asynchronous tasks that run in the glib main loop. If you need to run tasks in threads see the Task type.

The constructors of LocalTask and Task is marked as unsafe because this API does not allow to automatically enforce all the invariants required to be a completely safe abstraction. See the Task type for more details.

Implementations

impl<V: Into<Value> + ValueType> LocalTask<V>

pub unsafe fn new<S, P, Q>( source_object: Option<&S>, cancellable: Option<&P>, callback: Q ) -> Self

where S: IsA<Object>, P: IsA<Cancellable>, Q: FnOnce(LocalTask<V>, Option<&S>) + 'static,

pub fn cancellable(&self) -> Option<Cancellable>

pub fn is_check_cancellable(&self) -> bool

pub fn set_check_cancellable(&self, check_cancellable: bool)

pub fn set_name(&self, name: Option<&str>)

Available on crate feature v2_60 only.

pub fn set_return_on_cancel(&self, return_on_cancel: bool) -> bool

pub fn is_valid( result: &impl IsA<AsyncResult>, source_object: Option<&impl IsA<Object>> ) -> bool

pub fn priority(&self) -> Priority

pub fn set_priority(&self, priority: Priority)

pub fn is_completed(&self) -> bool

pub fn context(&self) -> MainContext

pub fn name(&self) -> Option<GString>

Available on crate feature v2_60 only.

pub fn is_return_on_cancel(&self) -> bool

pub fn had_error(&self) -> bool

pub fn connect_completed_notify<F>(&self, f: F) -> SignalHandlerId

where F: Fn(&LocalTask<V>) + 'static,

pub fn return_error_if_cancelled(&self) -> bool

pub fn return_result(self, result: Result<V, Error>)

pub fn propagate(self) -> Result<V, Error>

Trait Implementations

impl<V: ValueType> Clone for LocalTask<V>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<V: ValueType> Debug for LocalTask<V>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<V: ValueType> Display for LocalTask<V>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<V: ValueType> HasParamSpec for LocalTask<V>

type ParamSpec = ParamSpecObject

type SetValue = LocalTask<V>

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, LocalTask<V>>

fn param_spec_builder() -> Self::BuilderFn

impl<V: ValueType> Hash for LocalTask<V>

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<V: ValueType> Ord for LocalTask<V>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl<V: ValueType> ParentClassIs for LocalTask<V>

type Parent = Object

impl<OT: ObjectType, V: ValueType> PartialEq<OT> for LocalTask<V>

fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType, V: ValueType> PartialOrd<OT> for LocalTask<V>

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<V: ValueType> StaticType for LocalTask<V>

fn static_type() -> Type

Returns the type identifier of Self.

impl<V: ValueType> Eq for LocalTask<V>

impl<V: ValueType> IsA<AsyncResult> for LocalTask<V>