Trait DropdownDelegate 

pub trait DropdownDelegate: Sized {
    type Item: DropdownItem;

    // Required methods
    fn items_count(&self, section: usize) -> usize;
    fn item(&self, ix: IndexPath) -> Option<&Self::Item>;
    fn position<V>(&self, _value: &V) -> Option<IndexPath>
       where Self::Item: DropdownItem<Value = V>,
             V: PartialEq;

    // Provided methods
    fn sections_count(&self, _: &App) -> usize { ... }
    fn section(&self, _section: usize) -> Option<AnyElement> { ... }
    fn searchable(&self) -> bool { ... }
    fn perform_search(
        &mut self,
        _query: &str,
        _window: &mut Window,
        _: &mut App,
    ) -> Task<()> { ... }
}

Required Associated Types

type Item: DropdownItem

Required Methods

fn items_count(&self, section: usize) -> usize

Returns the number of items in the given section.

fn item(&self, ix: IndexPath) -> Option<&Self::Item>

Returns the item at the given index path (Only section, row will be use).

fn position<V>(&self, _value: &V) -> Option<IndexPath>

where Self::Item: DropdownItem<Value = V>, V: PartialEq,

Returns the index of the item with the given value, or None if not found.

Provided Methods

fn sections_count(&self, _: &App) -> usize

Returns the number of sections in the dropdown.

fn section(&self, _section: usize) -> Option<AnyElement>

Returns the section header element for the given section index.

fn searchable(&self) -> bool

fn perform_search( &mut self, _query: &str, _window: &mut Window, _: &mut App, ) -> Task<()>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T: DropdownItem> DropdownDelegate for Vec<T>

type Item = T

fn items_count(&self, _: usize) -> usize

fn item(&self, ix: IndexPath) -> Option<&Self::Item>

fn position<V>(&self, value: &V) -> Option<IndexPath>

where Self::Item: DropdownItem<Value = V>, V: PartialEq,

Implementors

impl<I: DropdownItem> DropdownDelegate for SearchableVec<DropdownItemGroup<I>>

type Item = I

impl<I: DropdownItem> DropdownDelegate for SearchableVec<I>

type Item = I