Struct druid::widget::Parse

pub struct Parse<T> { /* fields omitted */ }

Converts a Widget<String> to a Widget<Option<T>>, mapping parse errors to None

Implementations

impl<T> Parse<T>

pub fn new(widget: T) -> Self

Trait Implementations

impl<T: FromStr + Display + Data, W: Widget<String>> Widget<Option<T>> for Parse<W>

fn event(
    &mut self,
    ctx: &mut EventCtx,
    event: &Event,
    data: &mut Option<T>,
    env: &Env
)

Handle an event.

fn lifecycle(
    &mut self,
    ctx: &mut LifeCycleCtx,
    event: &LifeCycle,
    data: &Option<T>,
    env: &Env
)

Handle a life cycle notification.

fn update(
    &mut self,
    ctx: &mut UpdateCtx,
    _old_data: &Option<T>,
    data: &Option<T>,
    env: &Env
)

Handle a change of data.

fn layout(
    &mut self,
    ctx: &mut LayoutCtx,
    bc: &BoxConstraints,
    _data: &Option<T>,
    env: &Env
) -> Size

Compute layout.

fn paint(&mut self, paint: &mut PaintCtx, _data: &Option<T>, env: &Env)

Paint the widget appearance.

fn id(&self) -> Option<WidgetId>