Struct widgetry::Stash

pub struct Stash<T> {
    value: Rc<RefCell<T>>,
}

An invisible widget that stores some arbitrary data on the Panel. Users of the panel can read and write the value. This is one method for “returning” data when a State completes.

Fields

value: Rc<RefCell<T>>

Implementations

impl<T: 'static> Stash<T>

pub fn new(name: &str, value: T) -> Widget

pub(crate) fn get_value(&self) -> Rc<RefCell<T>>

Trait Implementations

impl<T: 'static> WidgetImpl for Stash<T>

fn get_dims(&self) -> ScreenDims

What width and height does the widget occupy? If this changes, be sure to set redo_layout to true in event.

fn set_pos(&mut self, _: ScreenPt)

Your widget’s top left corner should be here. Handle mouse events and draw appropriately.

fn event(&mut self, _: &mut EventCtx<'_>, _: &mut WidgetOutput)

Your chance to react to an event. Any side effects outside of this widget are communicated through the output.

fn draw(&self, _: &mut GfxCtx<'_>)

Draw the widget. Be sure to draw relative to the top-left specified by set_pos.

fn can_restore(&self) -> bool

If a new Panel is being created to replace an older one, all widgets have the chance to preserve state from the previous version.

fn restore(&mut self, _: &mut EventCtx<'_>, _prev: &Box<dyn WidgetImpl>)

Restore state from the previous version of this widget, with the same ID. Implementors must downcast.