Struct ItemsSourceView 

pub struct ItemsSourceView { /* private fields */ }

Represents a standardized view of the supported interactions between an items collection and an items control.

Implementations

impl ItemsSourceView

pub fn empty() -> Rc<ItemsSourceView>

Gets an empty ItemsSourceView.

pub fn count(&self) -> usize

Gets the number of items in the collection.

pub fn source(&self) -> ItemsSource

Gets the source collection.

pub fn add_collection_changed(&self, handler: Rc<ItemsChangedHandler>) -> u64

Occurs when the collection has changed to indicate the reason for the change and which items changed. Returns the token for remove_collection_changed.

pub fn remove_collection_changed(&self, token: u64)

pub fn get_at(&self, index: usize) -> Option<BoxedValue>

Retrieves the item at the specified index. Panics if out of range.

pub fn contains(&self, item: &Option<BoxedValue>) -> bool

Whether the collection contains the item.

pub fn index_of(&self, item: &Option<BoxedValue>) -> i32

The index of the item, or -1.

pub fn get_or_create(items: Option<&ItemsSource>) -> Rc<ItemsSourceView>

Gets or creates an ItemsSourceView for the specified source.

Returns empty if items is None, otherwise a new view. (A caller that already holds a view uses it as is.)

pub fn get_or_create_of<T: PropertyValue>( items: Option<&ItemsSource>, ) -> ItemsSourceViewOf<T>

Gets or creates a typed view for the specified source.

pub fn iter(&self) -> impl Iterator<Item = Option<BoxedValue>>

The items, enumerated by index over the live collection.

pub fn to_vec(&self) -> Vec<Option<BoxedValue>>

A copy of the items.

Trait Implementations

impl ICollectionChangedListener for ItemsSourceView

fn pre_changed(&self, e: &ItemsChangedEventArgs<'_>)

fn changed(&self, e: &ItemsChangedEventArgs<'_>)

fn post_changed(&self, e: &ItemsChangedEventArgs<'_>)