Trait UICollectionViewDataSource 

pub unsafe trait UICollectionViewDataSource: NSObjectProtocol + MainThreadOnly {
    // Provided methods
    fn collectionView_numberOfItemsInSection(
        &self,
        collection_view: &UICollectionView,
        section: NSInteger,
    ) -> NSInteger
       where Self: Sized + Message { ... }
    fn collectionView_cellForItemAtIndexPath(
        &self,
        collection_view: &UICollectionView,
        index_path: &NSIndexPath,
    ) -> Retained<UICollectionViewCell>
       where Self: Sized + Message { ... }
    fn numberOfSectionsInCollectionView(
        &self,
        collection_view: &UICollectionView,
    ) -> NSInteger
       where Self: Sized + Message { ... }
    fn collectionView_viewForSupplementaryElementOfKind_atIndexPath(
        &self,
        collection_view: &UICollectionView,
        kind: &NSString,
        index_path: &NSIndexPath,
    ) -> Retained<UICollectionReusableView>
       where Self: Sized + Message { ... }
    fn collectionView_canMoveItemAtIndexPath(
        &self,
        collection_view: &UICollectionView,
        index_path: &NSIndexPath,
    ) -> bool
       where Self: Sized + Message { ... }
    fn collectionView_moveItemAtIndexPath_toIndexPath(
        &self,
        collection_view: &UICollectionView,
        source_index_path: &NSIndexPath,
        destination_index_path: &NSIndexPath,
    )
       where Self: Sized + Message { ... }
    fn indexTitlesForCollectionView(
        &self,
        collection_view: &UICollectionView,
    ) -> Option<Retained<NSArray<NSString>>>
       where Self: Sized + Message { ... }
    fn collectionView_indexPathForIndexTitle_atIndex(
        &self,
        collection_view: &UICollectionView,
        title: &NSString,
        index: NSInteger,
    ) -> Retained<NSIndexPath>
       where Self: Sized + Message { ... }
}

Available on crate feature UICollectionView only.

Apple’s documentation

Provided Methods

fn collectionView_numberOfItemsInSection( &self, collection_view: &UICollectionView, section: NSInteger, ) -> NSInteger

where Self: Sized + Message,

Available on crate features UIResponder and UIScrollView and UIView only.

fn collectionView_cellForItemAtIndexPath( &self, collection_view: &UICollectionView, index_path: &NSIndexPath, ) -> Retained<UICollectionViewCell>

where Self: Sized + Message,

Available on crate features UICollectionViewCell and UIResponder and UIScrollView and UIView only.

fn numberOfSectionsInCollectionView( &self, collection_view: &UICollectionView, ) -> NSInteger

where Self: Sized + Message,

Available on crate features UIResponder and UIScrollView and UIView only.

fn collectionView_viewForSupplementaryElementOfKind_atIndexPath( &self, collection_view: &UICollectionView, kind: &NSString, index_path: &NSIndexPath, ) -> Retained<UICollectionReusableView>

where Self: Sized + Message,

Available on crate features UICollectionViewCell and UIResponder and UIScrollView and UIView only.

fn collectionView_canMoveItemAtIndexPath( &self, collection_view: &UICollectionView, index_path: &NSIndexPath, ) -> bool

where Self: Sized + Message,

Available on crate features UIResponder and UIScrollView and UIView only.

fn collectionView_moveItemAtIndexPath_toIndexPath( &self, collection_view: &UICollectionView, source_index_path: &NSIndexPath, destination_index_path: &NSIndexPath, )

where Self: Sized + Message,

Available on crate features UIResponder and UIScrollView and UIView only.

fn indexTitlesForCollectionView( &self, collection_view: &UICollectionView, ) -> Option<Retained<NSArray<NSString>>>

where Self: Sized + Message,

Available on crate features UIResponder and UIScrollView and UIView only.

Returns a list of index titles to display in the index view (e.g. [“A”, “B”, “C” … “Z”, “#”])

fn collectionView_indexPathForIndexTitle_atIndex( &self, collection_view: &UICollectionView, title: &NSString, index: NSInteger, ) -> Retained<NSIndexPath>

where Self: Sized + Message,

Available on crate features UIResponder and UIScrollView and UIView only.

Returns the index path that corresponds to the given title / index. (e.g. “B”,1) Return an index path with a single index to indicate an entire section, instead of a specific item.

Trait Implementations

impl<T> ImplementedBy<T> for dyn UICollectionViewDataSource

where T: ?Sized + Message + UICollectionViewDataSource,

impl ProtocolType for dyn UICollectionViewDataSource

const NAME: &'static str = "UICollectionViewDataSource"

The name of the Objective-C protocol that this type represents.

fn protocol() -> Option<&'static AnyProtocol>

Get a reference to the Objective-C protocol object that this type represents.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> UICollectionViewDataSource for ProtocolObject<T>

where T: ?Sized + UICollectionViewDataSource,

Implementors

impl UICollectionViewDataSource for UICollectionViewController

Available on crate feature UICollectionViewController only.

impl<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> UICollectionViewDataSource for UICollectionViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

Available on crate feature UIDiffableDataSource only.