Struct druid::widget::Added

pub struct Added<T, W> { /* private fields */ }

This Controller widget responds to LifeCycle::WidgetAdded event with the provided closure. Pass this and a child widget to ControllerHost to respond to the event when the child widget is added to the widget tree. This is also available, for convenience, as an on_added method via WidgetExt.

Implementations

impl<T: Data, W: Widget<T>> Added<T, W>

pub fn new( action: impl Fn(&mut W, &mut LifeCycleCtx<'_, '_>, &T, &Env) + 'static ) -> Self

Create a new Controller widget to respond to widget added to tree event.

Trait Implementations

impl<T: Data, W: Widget<T>> Controller<T, W> for Added<T, W>

fn lifecycle( &mut self, child: &mut W, ctx: &mut LifeCycleCtx<'_, '_>, event: &LifeCycle, data: &T, env: &Env )

Analogous to Widget::lifecycle.

fn event( &mut self, child: &mut W, ctx: &mut EventCtx<'_, '_>, event: &Event, data: &mut T, env: &Env )

Analogous to Widget::event.

fn update( &mut self, child: &mut W, ctx: &mut UpdateCtx<'_, '_>, old_data: &T, data: &T, env: &Env )

Analogous to Widget::update.