Struct SelectionExternalStorage

pub struct SelectionExternalStorage<'f, Storage> { /* private fields */ }

MultiSelectStorage that forwards the selection data to another place.

Storage is the inner storage type, usually a mutable reference, but not necessarily. 'f is the lifetime of the setter function, usually 'static.

Implementations

impl<'f, Storage> SelectionExternalStorage<'f, Storage>

pub fn new( storage: Storage, selection_size: impl Fn(&Storage) -> Option<usize> + 'f, setter: impl FnMut(&mut Storage, usize, bool) + 'f, ) -> Self

Creates a new SelectionExternalStorage.

The intended usage is that you keep the storage in your code and when multi-select happens, you pass a mutable reference to it in storage, along with a setter function to set the selection status of an item.

Additionally, pass a function to count the number of selected items. If you don’t want to compute that, use |_| None.

pub fn storage(&mut self) -> &mut Storage

Gets a reference to the inner storage.

pub fn into_storage(self) -> Storage

Unwraps the inner storage.

Trait Implementations

impl<'f, Storage> MultiSelectStorage for SelectionExternalStorage<'f, Storage>

fn size(&self) -> Option<usize>

fn apply_requests(&mut self, ms: &mut MultiSelect)