i_slint_core::item_tree

Struct ItemVisitorVTable

Source
#[repr(C)]
pub struct ItemVisitorVTable { pub visit_item: unsafe extern "C" fn(_: VRefMut<'_, ItemVisitorVTable>, item_tree: &VRc<ItemTreeVTable, Dyn>, index: u32, item: Pin<VRef<'_, ItemVTable>>) -> VisitChildrenResult, pub drop: unsafe extern "C" fn(_: VRefMut<'_, ItemVisitorVTable>), }
Expand description

Object to be passed in visit_item_children method of the ItemTree.

Fields§

§visit_item: unsafe extern "C" fn(_: VRefMut<'_, ItemVisitorVTable>, item_tree: &VRc<ItemTreeVTable, Dyn>, index: u32, item: Pin<VRef<'_, ItemVTable>>) -> VisitChildrenResult

Called for each child of the visited item

The item_tree parameter is the ItemTree in which the item live which might not be the same as the parent’s ItemTree. index is to be used again in the visit_item_children function of the ItemTree (the one passed as parameter) and item is a reference to the item itself

§drop: unsafe extern "C" fn(_: VRefMut<'_, ItemVisitorVTable>)

Destructor

Implementations§

Source§

impl ItemVisitorVTable

Source

pub fn new<T: ItemVisitor>() -> Self

Create a vtable suitable for a given type implementing the trait.

Trait Implementations§

Source§

impl VTableMeta for ItemVisitorVTable

Source§

type VTable = ItemVisitorVTable

That’s the VTable itself (so most likely Self)
Source§

type Target = ItemVisitorTO

That’s the trait object that implements the functions Read more
Source§

impl VTableMetaDrop for ItemVisitorVTable

Auto Trait Implementations§

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

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

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.

Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.