Struct i_slint_core::item_tree::ItemVisitorVTable

#[repr(C)]
pub struct ItemVisitorVTable {
    pub visit_item: unsafe extern "C" fn(_: VRefMut<'_, ItemVisitorVTable>, component: &VRc<ComponentVTable, Dyn>, index: usize, item: Pin<VRef<'_, ItemVTable>>) -> VisitChildrenResult,
    pub drop: unsafe extern "C" fn(_: VRefMut<'_, ItemVisitorVTable>),
}

Object to be passed in visit_item_children method of the Component.

Fields

visit_item: unsafe extern "C" fn(_: VRefMut<'_, ItemVisitorVTable>, component: &VRc<ComponentVTable, Dyn>, index: usize, item: Pin<VRef<'_, ItemVTable>>) -> VisitChildrenResult

Called for each child of the visited item

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

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

Destructor

Implementations

impl ItemVisitorVTable

pub fn new<T: ItemVisitor>() -> Self

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

Trait Implementations

impl VTableMeta for ItemVisitorVTable

type VTable = ItemVisitorVTable

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

type Target = ItemVisitorTO

That’s the trait object that implements the functions

impl VTableMetaDrop for ItemVisitorVTable

unsafe fn drop(ptr: *mut ItemVisitorTO)

Safety

fn new_box<X: HasStaticVTable<ItemVisitorVTable>>(
    value: X
) -> VBox<ItemVisitorVTable>

allocate a new VBox