Struct glib::subclass::types::TypeData

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pub struct TypeData { /* private fields */ }
Expand description

Type-specific data that is filled in during type creation.

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impl TypeData

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pub fn type_(&self) -> Type

Returns the type ID.

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pub fn parent_class(&self) -> gpointer

Returns a pointer to the native parent class.

This is used for chaining up to the parent class’ implementation of virtual methods.

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pub fn parent_interface<I: IsInterface>(&self) -> gpointer

Returns a pointer to the native parent interface struct for interface type_.

This is used for chaining up to the parent interface’s implementation of virtual methods.

Panics

This function panics if the type to which the TypeData belongs does not implement the given interface or was not registered yet.

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pub fn class_data<T: Any + Send + Sync + 'static>( &self, type_: Type ) -> Option<&T>

Returns a pointer to the class implementation specific data.

This is used for class implementations to store additional data.

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pub unsafe fn class_data_mut<T: Any + Send + Sync + 'static>( &mut self, type_: Type ) -> Option<&mut T>

Gets a mutable reference of the class implementation specific data.

Safety

This can only be used while the type is being initialized.

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pub unsafe fn set_class_data<T: Any + Send + Sync + 'static>( &mut self, type_: Type, data: T )

Sets class specific implementation data.

Safety

This can only be used while the type is being initialized.

Panics

If the class_data already contains a data for the specified type_.

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pub fn impl_offset(&self) -> isize

Returns the offset of the private implementation struct in bytes relative to the beginning of the instance struct.

Trait Implementations§

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.