Struct If

pub struct If<T, F> { /* private fields */ }

A conditional view that can take on one of at most two branches, depending on a boolean condition.

Implementations

impl<T> If<T, ()>

pub fn new(condition: bool, then_view: impl FnOnce() -> T) -> If<T, ()>

Examples found in repository

examples/fizz_buzz.rs (line 29)

    fn body(&self) -> Self::Body {
        let count = self.count.clone();
        let fizz = count.get() % 3 == 0;
        let buzz = count.get() % 5 == 0;
        VStack::new((
            Button::with_text("Increment", clone!(count => move || {
                count.set(count.get() + 1);
            })),
            If::new_or_else(fizz || buzz, || {
                HStack::new((
                    If::new(fizz, || Text::new("Fizz")),
                    If::new(buzz, || Text::new("Buzz")),
                ))
            }, || {
                Text::new(format!("{}", self.count.get()))
            }),
        ))
    }

impl<T, F> If<T, F>

pub fn new_or_else( condition: bool, then_view: impl FnOnce() -> T, else_view: impl FnOnce() -> F, ) -> If<T, F>

Examples found in repository

examples/fizz_buzz.rs (lines 27-34)

    fn body(&self) -> Self::Body {
        let count = self.count.clone();
        let fizz = count.get() % 3 == 0;
        let buzz = count.get() % 5 == 0;
        VStack::new((
            Button::with_text("Increment", clone!(count => move || {
                count.set(count.get() + 1);
            })),
            If::new_or_else(fizz || buzz, || {
                HStack::new((
                    If::new(fizz, || Text::new("Fizz")),
                    If::new(buzz, || Text::new("Buzz")),
                ))
            }, || {
                Text::new(format!("{}", self.count.get()))
            }),
        ))
    }

Trait Implementations

impl<T, F> Bind for If<T, F>

fn bind(&self, context: &Context)

impl<T, F> Clone for If<T, F>

where T: Clone, F: Clone,

fn clone(&self) -> If<T, F>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T, F> Debug for If<T, F>

where T: Debug, F: Debug,

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

Formats the value using the given formatter.

impl<T, F> PartialEq for If<T, F>

where T: PartialEq, F: PartialEq,

fn eq(&self, other: &If<T, F>) -> 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.

impl<T, F> View for If<T, F>

where T: View, F: View,

fn fire(&self, event: &Event, event_path: &IdPath, context: &Context)

fn render(&self, context: &Context) -> Node

type Body = NeverView

fn body(&self) -> Self::Body

impl<T, F> Eq for If<T, F>

where T: Eq, F: Eq,

impl<T, F> StructuralPartialEq for If<T, F>