Trait zng::undo::WidgetInfoUndoExt

pub trait WidgetInfoUndoExt {
    // Required methods
    fn is_undo_scope(&self) -> bool;
    fn undo_scope(&self) -> Option<WidgetInfo>;
}

Undo extension methods for widget info.

Required Methods

fn is_undo_scope(&self) -> bool

Returns true if the widget is an undo scope.

fn undo_scope(&self) -> Option<WidgetInfo>

Gets the first ancestor that is an undo scope.

Implementors

impl WidgetInfoUndoExt for WidgetInfo