Trait kas::Widget

pub trait Widget: SendEvent { }

Widget trait

Widgets must implement a family of traits, of which this trait is the final member:

• WidgetCore — base functionality (this trait is always derived)
• WidgetChildren — enumerates children and provides methods derived from this
• Layout — handles sizing and positioning of self and children
• WidgetConfig — the last unparametrised trait allows customisation of some aspects of widget behaviour
• event::Handler — parametrised widgets over a Msg type and handles events
• event::SendEvent — routes events to children and handles responses
• Widget — the final trait

Widgets must use the derive(Widget) macro to implement at least WidgetCore and Widget; these two traits must not be implemented manually or users may face unexpected breaking changes. This macro can optionally implement all above traits, and by default will implement all except for Layout. This opt-out derive behaviour means that adding additional traits into the family is not a breaking change.

To refer to a widget via dyn trait, use &dyn WidgetConfig (or, if the message type is known, one may use &dyn Widget<Msg = M>). To refer to a widget in generic functions, use <W: Widget> or <M, W: Widget<Msg = M>>.

Trait Implementations

impl<W> Boxed<dyn Widget<Msg = <W as Handler>::Msg> + 'static> for W where
    W: Widget, 

pub fn boxed(
    self
) -> Box<dyn Widget<Msg = <W as Handler>::Msg> + 'static, Global>

Boxing method

Implementations on Foreign Types

impl<M> Widget for Box<dyn Widget<Msg = M> + 'static, Global> where
    M: 'static, 

impl<D> Widget for ScrollBar<D> where
    D: Directional, 

impl<M> Widget for Box<dyn Menu<Msg = M> + 'static, Global> where
    M: 'static, 

impl<W> Widget for ScrollBarRegion<W> where
    W: Widget, 

impl<W> Widget for ScrollBars<W> where
    W: Scrollable, 

impl<T, V> Widget for MatrixView<T, V> where
    V: Driver<<T as MatrixData>::Item>,
    T: 'static + MatrixData + UpdatableAll<<T as MatrixData>::Key, <V as Driver<<T as MatrixData>::Item>>::Msg>, 

impl<G> Widget for EditBox<G> where
    G: EditGuard, 

impl<T> Widget for MessageBox<T> where
    T: 'static + FormattableText, 

impl<M> Widget for RadioBox<M> where
    M: 'static + From<VoidMsg>, 

impl<W, M> Widget for MapResponse<W, M> where
    M: 'static,
    W: Widget, 

impl<D, W> Widget for List<D, W> where
    D: Directional,
    W: Widget, 

impl<D, W> Widget for SubMenu<D, W> where
    D: Directional,
    W: Menu, 

impl<M> Widget for RadioBoxBare<M> where
    M: 'static, 

impl<M> Widget for MenuEntry<M> where
    M: 'static + Clone + Debug, 

impl<M> Widget for MenuToggle<M> where
    M: 'static + From<VoidMsg>, 

impl<D, T, V> Widget for ListView<D, T, V> where
    V: Driver<<T as ListData>::Item>,
    D: Directional,
    T: 'static + ListData + UpdatableAll<<T as ListData>::Key, <V as Driver<<T as ListData>::Item>>::Msg>, 

impl<W> Widget for Stack<W> where
    W: Widget, 

impl<M> Widget for CheckBoxBare<M> where
    M: 'static, 

impl<T> Widget for Label<T> where
    T: 'static + FormattableText, 

impl<D> Widget for ProgressBar<D> where
    D: Directional, 

impl<M> Widget for ComboBox<M> where
    M: 'static, 

impl<T, V> Widget for SingleView<T, V> where
    V: Driver<<T as SingleData>::Item>,
    T: 'static + SingleData + UpdatableAll<(), <V as Driver<<T as SingleData>::Item>>::Msg>, 

impl<W, D> Widget for WithLabel<W, D> where
    D: Directional,
    W: Widget, 

impl<W> Widget for NavFrame<W> where
    W: Widget, 

impl<W> Widget for Frame<W> where
    W: Widget, 

impl<W, R> Widget for Reserve<W, R> where
    R: 'static + FnMut(&mut dyn SizeHandle, AxisInfo) -> SizeRules,
    W: Widget, 

impl<G> Widget for EditField<G> where
    G: EditGuard, 

impl<W> Widget for Grid<W> where
    W: Widget, 

impl<W, D> Widget for MenuBar<W, D> where
    D: Directional,
    W: Menu, 

impl<W, M> Widget for Window<W> where
    M: Into<VoidMsg>,
    W: 'static + Widget<Msg = M> + Widget, 

impl Widget for Filler

impl Widget for Image

impl<M> Widget for Separator<M> where
    M: 'static + Debug, 

impl<W> Widget for ScrollRegion<W> where
    W: Widget, 

impl<T, D> Widget for Slider<T, D> where
    D: Directional,
    T: SliderType, 

impl<L, M> Widget for Button<L, M> where
    L: Widget<Msg = VoidMsg>,
    M: 'static, 

impl<M> Widget for CheckBox<M> where
    M: 'static + From<VoidMsg>, 

impl Widget for DragHandle

impl<T> Widget for ScrollLabel<T> where
    T: 'static + FormattableText, 

impl<D, W> Widget for Splitter<D, W> where
    D: Directional,
    W: Widget, 

impl<M> Widget for TextButton<M> where
    M: 'static, 

impl Widget for Svg

impl<P> Widget for Canvas<P> where
    P: CanvasDrawable, 

Implementors