pub struct BoxedAnyObject { /* private fields */ }
Expand description
This is a subclass of glib::object::Object
capable of storing any Rust type.
It let’s you insert a Rust type anywhere a glib::object::Object
is needed.
The inserted value can then be borrowed as a Rust type, by using the various
provided methods.
§Examples
use glib::prelude::*;
use glib::BoxedAnyObject;
use std::cell::Ref;
struct Author {
name: String,
subscribers: usize
}
// BoxedAnyObject can contain any custom type
let boxed = BoxedAnyObject::new(Author {
name: String::from("GLibAuthor"),
subscribers: 1000
});
// The value can be retrieved with `borrow`
let author: Ref<Author> = boxed.borrow();
use gio::ListStore;
// The boxed data can be stored as a `glib::object::Object`
let list = ListStore::new::<BoxedAnyObject>();
list.append(&boxed);
GLib type: GObject with reference counted clone semantics.
Implementations§
Source§impl BoxedAnyObject
impl BoxedAnyObject
Sourcepub fn replace<T: 'static>(&self, t: T) -> Box<dyn Any>
pub fn replace<T: 'static>(&self, t: T) -> Box<dyn Any>
Replaces the wrapped value with a new one, returning the old value, without deinitializing either one.
The returned value is inside a Box
and must be manually downcasted if needed.
Sourcepub fn try_borrow<T: 'static>(&self) -> Result<Ref<'_, T>, BorrowError>
pub fn try_borrow<T: 'static>(&self) -> Result<Ref<'_, T>, BorrowError>
Immutably borrows the wrapped value, returning an error if the value is currently mutably
borrowed or if it’s not of type T
.
The borrow lasts until the returned Ref
exits scope. Multiple immutable borrows can be
taken out at the same time.
This is the non-panicking variant of borrow
.
Sourcepub fn try_borrow_mut<T: 'static>(
&mut self,
) -> Result<RefMut<'_, T>, BorrowMutError>
pub fn try_borrow_mut<T: 'static>( &mut self, ) -> Result<RefMut<'_, T>, BorrowMutError>
Mutably borrows the wrapped value, returning an error if the value is currently borrowed.
or if it’s not of type T
.
The borrow lasts until the returned RefMut
or all RefMut
s derived
from it exit scope. The value cannot be borrowed while this borrow is
active.
This is the non-panicking variant of borrow_mut
.
Sourcepub fn borrow<T: 'static>(&self) -> Ref<'_, T>
pub fn borrow<T: 'static>(&self) -> Ref<'_, T>
Immutably borrows the wrapped value.
The borrow lasts until the returned Ref
exits scope. Multiple
immutable borrows can be taken out at the same time.
§Panics
Panics if the value is currently mutably borrowed or if it’s not of type T
.
For a non-panicking variant, use
try_borrow
.
Sourcepub fn borrow_mut<T: 'static>(&self) -> RefMut<'_, T>
pub fn borrow_mut<T: 'static>(&self) -> RefMut<'_, T>
Mutably borrows the wrapped value.
The borrow lasts until the returned RefMut
or all RefMut
s derived
from it exit scope. The value cannot be borrowed while this borrow is
active.
§Panics
Panics if the value is currently borrowed or if it’s not of type T
.
For a non-panicking variant, use
try_borrow_mut
.
Trait Implementations§
Source§impl Clone for BoxedAnyObject
impl Clone for BoxedAnyObject
Source§impl Debug for BoxedAnyObject
impl Debug for BoxedAnyObject
Source§impl HasParamSpec for BoxedAnyObject
impl HasParamSpec for BoxedAnyObject
type ParamSpec = ParamSpecObject
Source§type SetValue = BoxedAnyObject
type SetValue = BoxedAnyObject
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, BoxedAnyObject>
fn param_spec_builder() -> Self::BuilderFn
Source§impl Hash for BoxedAnyObject
impl Hash for BoxedAnyObject
Source§impl ObjectSubclassIs for BoxedAnyObject
impl ObjectSubclassIs for BoxedAnyObject
Source§impl Ord for BoxedAnyObject
impl Ord for BoxedAnyObject
Source§fn cmp(&self, other: &Self) -> Ordering
fn cmp(&self, other: &Self) -> Ordering
Comparison for two GObjects.
Compares the memory addresses of the provided objects.
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Source§impl ParentClassIs for BoxedAnyObject
impl ParentClassIs for BoxedAnyObject
Source§impl<OT: ObjectType> PartialEq<OT> for BoxedAnyObject
impl<OT: ObjectType> PartialEq<OT> for BoxedAnyObject
Source§impl<OT: ObjectType> PartialOrd<OT> for BoxedAnyObject
impl<OT: ObjectType> PartialOrd<OT> for BoxedAnyObject
Source§impl StaticType for BoxedAnyObject
impl StaticType for BoxedAnyObject
Source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for BoxedAnyObject
Auto Trait Implementations§
impl Freeze for BoxedAnyObject
impl !RefUnwindSafe for BoxedAnyObject
impl !Send for BoxedAnyObject
impl !Sync for BoxedAnyObject
impl Unpin for BoxedAnyObject
impl !UnwindSafe for BoxedAnyObject
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Source§impl<T> Cast for Twhere
T: ObjectType,
impl<T> Cast for Twhere
T: ObjectType,
Source§fn upcast<T: ObjectType>(self) -> Twhere
Self: IsA<T>,
fn upcast<T: ObjectType>(self) -> Twhere
Self: IsA<T>,
T
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Self: IsA<T>,
fn upcast_ref<T: ObjectType>(&self) -> &Twhere
Self: IsA<T>,
T
. Read moreSource§fn downcast<T: ObjectType>(self) -> Result<T, Self>where
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fn downcast<T: ObjectType>(self) -> Result<T, Self>where
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T
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fn dynamic_cast<T: ObjectType>(self) -> Result<T, Self>
T
. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while upcast
will do many checks at compile-time already. downcast
will
perform the same checks at runtime as dynamic_cast
, but will also ensure some amount of
compile-time safety. Read moreSource§fn dynamic_cast_ref<T: ObjectType>(&self) -> Option<&T>
fn dynamic_cast_ref<T: ObjectType>(&self) -> Option<&T>
T
. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while downcast
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unsafe fn unsafe_cast<T: ObjectType>(self) -> T
T
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name: Option<&str>,
f: F,
) -> SignalHandlerId
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F, ) -> SignalHandlerId
notify
signal of the object. Read more