Struct glib::closure::RustClosure
source · [−]pub struct RustClosure(_);
Implementations
sourceimpl RustClosure
impl RustClosure
sourcepub fn new<F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static>(
callback: F
) -> Self
pub fn new<F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static>(
callback: F
) -> Self
Creates a new closure around a Rust closure.
See glib::closure!
for a way to create a closure with concrete
types.
Panics
Invoking the closure with wrong argument types or returning the wrong return value type will panic.
Example
use glib::prelude::*;
let closure = glib::RustClosure::new(|values| {
let x = values[0].get::<i32>().unwrap();
Some((x + 1).to_value())
});
assert_eq!(
closure.invoke::<i32>(&[&1i32]),
2,
);
sourcepub fn new_local<F: Fn(&[Value]) -> Option<Value> + 'static>(
callback: F
) -> Self
pub fn new_local<F: Fn(&[Value]) -> Option<Value> + 'static>(
callback: F
) -> Self
Creates a new closure around a Rust closure.
See glib::closure_local!
for a way to create a closure with
concrete types.
Panics
Invoking the closure with wrong argument types or returning the wrong return value type will panic.
Invoking the closure from a different thread than this one will panic.
sourcepub fn invoke<R: TryFromClosureReturnValue>(&self, values: &[&dyn ToValue]) -> R
pub fn invoke<R: TryFromClosureReturnValue>(&self, values: &[&dyn ToValue]) -> R
Invokes the closure with the given arguments.
For invalidated closures this returns the “default” value of the return type. For nullable
types this is None
, which means that e.g. requesting R = String
will panic will R = Option<String>
will return None
.
Panics
The argument types and return value type must match the ones expected by the closure or otherwise this function panics.
sourcepub fn invoke_with_values(
&self,
return_type: Type,
values: &[Value]
) -> Option<Value>
pub fn invoke_with_values(
&self,
return_type: Type,
values: &[Value]
) -> Option<Value>
Invokes the closure with the given arguments.
For invalidated closures this returns the “default” value of the return type.
Panics
The argument types and return value type must match the ones expected by the closure or otherwise this function panics.
sourcepub fn invalidate(&self)
pub fn invalidate(&self)
Invalidates the closure.
Invoking an invalidated closure has no effect.
Trait Implementations
sourceimpl AsRef<Closure> for RustClosure
impl AsRef<Closure> for RustClosure
sourceimpl Clone for RustClosure
impl Clone for RustClosure
sourcefn clone(&self) -> RustClosure
fn clone(&self) -> RustClosure
1.0.0 · sourceconst fn clone_from(&mut self, source: &Self)
const fn clone_from(&mut self, source: &Self)
source
. Read moresourceimpl Debug for RustClosure
impl Debug for RustClosure
sourceimpl From<RustClosure> for Closure
impl From<RustClosure> for Closure
sourcefn from(c: RustClosure) -> Self
fn from(c: RustClosure) -> Self
sourceimpl Hash for RustClosure
impl Hash for RustClosure
sourceimpl Ord for RustClosure
impl Ord for RustClosure
sourcefn cmp(&self, other: &RustClosure) -> Ordering
fn cmp(&self, other: &RustClosure) -> Ordering
1.21.0 · sourceconst fn max(self, other: Self) -> Self
const fn max(self, other: Self) -> Self
1.21.0 · sourceconst fn min(self, other: Self) -> Self
const fn min(self, other: Self) -> Self
1.50.0 · sourceconst fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
const fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
sourceimpl PartialEq<RustClosure> for RustClosure
impl PartialEq<RustClosure> for RustClosure
sourcefn eq(&self, other: &RustClosure) -> bool
fn eq(&self, other: &RustClosure) -> bool
sourceimpl PartialOrd<RustClosure> for RustClosure
impl PartialOrd<RustClosure> for RustClosure
sourcefn partial_cmp(&self, other: &RustClosure) -> Option<Ordering>
fn partial_cmp(&self, other: &RustClosure) -> Option<Ordering>
1.0.0 · sourceconst fn le(&self, other: &Rhs) -> bool
const fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read more