Struct Conditional 

pub struct Conditional<C: RepeatedItemTree> { /* private fields */ }

Implementations

impl<C: RepeatedItemTree + 'static> Conditional<C>

pub fn ensure_updated( self: Pin<&Self>, init: impl Fn() -> VRc<ItemTreeVTable, C>, )

Call this function to make sure that the model is updated. The init function is the function to create a ItemTree

pub fn set_model_binding(&self, binding: impl Fn() -> bool + 'static)

Set the model binding

pub fn visit( &self, order: TraversalOrder, visitor: ItemVisitorRefMut<'_>, ) -> VisitChildrenResult

Call the visitor for the root of each instance

pub fn len(&self) -> usize

Return the amount of instances (1 if the conditional is active, 0 otherwise)

pub fn range(&self) -> Range<usize>

Return the range of indices used by this Conditional.

Similar to Repeater::range, but the range is always [0, 1] if the Conditional is active.

pub fn instance_at(&self, index: usize) -> Option<VRc<ItemTreeVTable, C>>

Return the instance for the given model index. The index should be within Self::range()

pub fn is_empty(&self) -> bool

Return true if the Repeater as empty

pub fn instances_vec(&self) -> Vec<VRc<ItemTreeVTable, C>>

Returns a vector containing all instances

Trait Implementations

impl<C: RepeatedItemTree> Default for Conditional<C>

fn default() -> Self

Returns the “default value” for a type.

impl<'pin, C: RepeatedItemTree> Unpin for Conditional<C>

where PinnedFieldsOf<__Conditional<'pin, C>>: Unpin,