Struct CommandBarElementCollection 

pub struct CommandBarElementCollection(/* private fields */);

The read-only, notifying collection of command bar elements that a CommandBar exposes as VisiblePrimaryCommands and OverflowItems (the read-only observable collection of the reference).

The collection is a reference object: the value is a shared handle, clones refer to the same collection and handles compare by identity. Only the command bar that owns it changes it. As an items source its elements that are controls are items boxed as controls, so that an items control presents them as their own containers.

Implementations

impl CommandBarElementCollection

pub fn count(&self) -> usize

The number of elements.

pub fn is_empty(&self) -> bool

Whether the collection has no elements.

pub fn get(&self, index: usize) -> Rc<dyn ICommandBarElement>

The element at index. Panics if out of range.

pub fn snapshot(&self) -> Rc<Vec<Rc<dyn ICommandBarElement>>>

The elements as they are now. The snapshot shares storage with the collection until the collection changes.

pub fn to_vec(&self) -> Vec<Rc<dyn ICommandBarElement>>

A copy of the elements.

pub fn contains(&self, element: &Rc<dyn ICommandBarElement>) -> bool

Whether the collection contains element.

pub fn index_of(&self, element: &Rc<dyn ICommandBarElement>) -> Option<usize>

The index of element, if the collection contains it.

pub fn add_collection_changed( &self, handler: Rc<CollectionChangedHandler<Rc<dyn ICommandBarElement>>>, ) -> u64

Subscribes to the changes of the collection. Returns the token for remove_collection_changed.

pub fn remove_collection_changed(&self, token: u64) -> bool

Unsubscribes a handler.

pub fn as_items_source(&self) -> ItemsSource

The collection as the source of the items of an items control.

Trait Implementations

impl Clone for CommandBarElementCollection

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CommandBarElementCollection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<CommandBarElementCollection> for ItemsSource

fn from(value: CommandBarElementCollection) -> Self

Converts to this type from the input type.

impl PartialEq for CommandBarElementCollection

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.