pub struct Closure { /* private fields */ }
Implementations§
§impl Closure
impl Closure
pub fn new<F>(callback: F) -> Closurewhere
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
pub fn new<F>(callback: F) -> Closurewhere F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
Creates a new closure around a Rust closure.
Note that RustClosure
provides more convenient and non-unsafe API for invoking
closures. This type mostly exists for FFI interop.
Panics
Invoking the closure with wrong argument types or returning the wrong return value type will panic.
Example
use glib::prelude::*;
let closure = glib::Closure::new(|values| {
let x = values[0].get::<i32>().unwrap();
Some((x + 1).to_value())
});
// Invoking non-Rust closures is unsafe because of possibly missing
// argument and return value type checks.
let res = unsafe {
closure
.invoke_with_values(glib::Type::I32, &[1i32.to_value()])
.and_then(|v| v.get::<i32>().ok())
.expect("Invalid return value")
};
assert_eq!(res, 2);
pub fn new_local<F>(callback: F) -> Closurewhere
F: Fn(&[Value]) -> Option<Value> + 'static,
pub fn new_local<F>(callback: F) -> Closurewhere F: Fn(&[Value]) -> Option<Value> + 'static,
Creates a new closure around a Rust closure.
Note that RustClosure
provides more convenient and non-unsafe API for invoking
closures. This type mostly exists for FFI interop.
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.
pub unsafe fn new_unsafe<F>(callback: F) -> Closurewhere
F: Fn(&[Value]) -> Option<Value>,
pub unsafe fn new_unsafe<F>(callback: F) -> Closurewhere F: Fn(&[Value]) -> Option<Value>,
Creates a new closure around a Rust closure.
Safety
The captured variables of the closure must stay valid as long as the return value of this constructor does, and it must be valid to call the closure from any thread that is used by callers.
pub unsafe fn invoke_with_values(
&self,
return_type: Type,
values: &[Value]
) -> Option<Value>
pub unsafe 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.
Safety
The argument types and return value type must match the ones expected by the closure or otherwise the behaviour is undefined.
Closures created from Rust via e.g. Closure::new
will panic on type mismatches but
this is not guaranteed for closures created from other languages.
pub fn invalidate(&self)
pub fn invalidate(&self)
Invalidates the closure.
Invoking an invalidated closure has no effect.
Trait Implementations§
§impl AsRef<Closure> for RustClosure
impl AsRef<Closure> for RustClosure
§impl From<RustClosure> for Closure
impl From<RustClosure> for Closure
§fn from(c: RustClosure) -> Closure
fn from(c: RustClosure) -> Closure
§impl Ord for Closure
impl Ord for Closure
§impl PartialOrd<Closure> for Closure
impl PartialOrd<Closure> for Closure
§fn partial_cmp(&self, other: &Closure) -> Option<Ordering>
fn partial_cmp(&self, other: &Closure) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read more§impl StaticType for Closure
impl StaticType for Closure
§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for Closure
impl Send for Closure
impl StructuralEq for Closure
impl StructuralPartialEq for Closure
impl Sync for Closure
Auto Trait Implementations§
Blanket Implementations§
§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
§impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere
T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
§impl<T> RoundFrom<T> for T
impl<T> RoundFrom<T> for T
§fn round_from(x: T) -> T
fn round_from(x: T) -> T
§impl<T, U> RoundInto<U> for Twhere
U: RoundFrom<T>,
impl<T, U> RoundInto<U> for Twhere U: RoundFrom<T>,
§fn round_into(self) -> U
fn round_into(self) -> U
§impl<T> StaticTypeExt for Twhere
T: StaticType,
impl<T> StaticTypeExt for Twhere T: StaticType,
§fn ensure_type()
fn ensure_type()
§impl<T> ToClosureReturnValue for Twhere
T: ToValue,
impl<T> ToClosureReturnValue for Twhere T: ToValue,
fn to_closure_return_value(&self) -> Option<Value>
§impl<T> ToSendValue for Twhere
T: Send + ToValue + ?Sized,
impl<T> ToSendValue for Twhere T: Send + ToValue + ?Sized,
§fn to_send_value(&self) -> SendValue
fn to_send_value(&self) -> SendValue
SendValue
clone of self
.