Struct Selector 

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

Represents the contextual selector behavior of value selector.

A selector can be set using selector, all value widgets in context will target it.

Implementations

impl Selector

pub fn new(selector: impl SelectorImpl) -> Self

New custom selector.

pub fn nil() -> Self

Represents no selector and the inability to select any item.

pub fn single<T>(selection: impl IntoVar<T>) -> Self

where T: VarValue,

Represents the “radio” selection of a single item.

pub fn single_opt<T>(selection: impl IntoVar<Option<T>>) -> Self

where T: VarValue,

Represents the “radio” selection of a single item that is optional.

pub fn bitflags<T>(selection: impl IntoVar<T>) -> Self

where T: VarValue + BitOr<Output = T> + BitAnd<Output = T> + Not<Output = T>,

Represents the “check list” selection of bitflags.

pub fn subscribe(&self)

Add the selector subscriptions in WIDGET.

pub fn select(&self, value: BoxAnyVarValue) -> Result<(), SelectorError>

Insert the value in the selection, returns Ok(()) if the value was inserted or was already selected.

pub fn deselect(&self, value: &dyn AnyVarValue) -> Result<(), SelectorError>

Remove the value from the selection, returns Ok(()) if the value was removed or was not selected.

pub fn is_selected(&self, value: &dyn AnyVarValue) -> bool

Returns true if the value is selected.

pub fn downgrade(&self) -> WeakSelector

Create a WeakSelector pointer to this selector.

pub fn strong_count(&self) -> usize

Number of strong pointers to this selector.

Trait Implementations

impl Clone for Selector

fn clone(&self) -> Selector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Selector

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

Formats the value using the given formatter.

impl<S: SelectorImpl> From<S> for Selector

fn from(sel: S) -> Self

Converts to this type from the input type.

impl PartialEq for Selector

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.