Trait Selectable

Source

pub trait Selectable: Sized {
    // Required methods
    fn selected(self, selected: bool) -> Self;
    fn is_selected(&self) -> bool;

    // Provided methods
    fn secondary_selected(self, _: bool) -> Self { ... }
    fn open(self, open: bool) -> Self { ... }
    fn is_open(&self) -> bool { ... }
}

Expand description

An element or component that exposes controlled selected state.

selected is the application’s own meaning of selection: the current view, the active item, the chosen option. open is a separate state a popover, menu or dropdown puts on its trigger for as long as it is open. The two coincide on a plain button, which paints both the same way, so open falls back to selected by default and a trigger that only implements selected keeps working unchanged. A trigger whose selection means something else, such as a sidebar row that is selected when it is the current view, overrides open and is_open to keep the two apart.