Struct Focus

pub struct Focus<T, U, V> { /* private fields */ }

A view that focuses on a part of the data.

This is useful when using components that require specific data.

Implementations

impl<T, U, V> Focus<T, U, V>

pub fn new( content: V, focus: impl FnMut(&mut T, &mut dyn FnMut(&mut U)) + 'static, ) -> Focus<T, U, V>

Create a new Focus.

Trait Implementations

impl<T, U, V> View<T> for Focus<T, U, V>

where V: View<U>,

type State = <V as View<U>>::State

The state of the view, see top-level documentation for more information.

fn build( &mut self, cx: &mut BuildCx<'_, '_>, data: &mut T, ) -> <Focus<T, U, V> as View<T>>::State

Build the view state, see top-level documentation for more information.

fn rebuild( &mut self, state: &mut <Focus<T, U, V> as View<T>>::State, cx: &mut RebuildCx<'_, '_>, data: &mut T, old: &Focus<T, U, V>, )

Rebuild the view state, see top-level documentation for more information.

fn event( &mut self, state: &mut <Focus<T, U, V> as View<T>>::State, cx: &mut EventCx<'_, '_>, data: &mut T, event: &Event, ) -> bool

Handle an event, see top-level documentation for more information.

fn layout( &mut self, state: &mut <Focus<T, U, V> as View<T>>::State, cx: &mut LayoutCx<'_, '_>, data: &mut T, space: Space, ) -> Size

Layout the view, see top-level documentation for more information.

fn draw( &mut self, state: &mut <Focus<T, U, V> as View<T>>::State, cx: &mut DrawCx<'_, '_>, data: &mut T, )

Draw the view, see top-level documentation for more information.