Struct CellMeta 

pub struct CellMeta {
    pub label: String,
    pub is_bool: bool,
    pub is_numeric: bool,
    pub is_integer: bool,
    pub display: Box<dyn Fn(&Sheet) -> String>,
    pub write_str: WriteStrFn,
    pub range: Option<Box<dyn Fn(&Sheet) -> (f64, f64)>>,
}

Display and write metadata for a single cell.

Fields

label: String

Human-readable cell name shown in the inspector.

is_bool: bool

true if the cell holds a bool, so crate::SheetInspector can render it as a checkbox instead of a text field.

is_numeric: bool

true if the cell holds one of the 14 numeric primitive types, so crate::SheetInspector can render it with crate::spectrum::SpNumberfield instead of a plain text field.

is_integer: bool

true if the cell holds one of the 12 integer primitive types (as opposed to f32/f64), so crate::SheetInspector can set its numeric widget’s step to 1 — crate::spectrum::SpNumberfield’s, or, for a range-filtered cell, crate::spectrum::SpSlider’s — since an integer cell has no fractional steps to land on.

display: Box<dyn Fn(&Sheet) -> String>

Returns the current cell value as a display string.

write_str: WriteStrFn

Parses s and writes the result to the cell; returns Err on parse failure or type mismatch. May also always return Err for a cell type with no write support yet (e.g. compound values — see Labels::add_compound_cell).

range: Option<Box<dyn Fn(&Sheet) -> (f64, f64)>>

Live slider bounds, present only for a numeric cell whose filter is a adam_rs::FilterKind::Range — recomputed from the filter’s current argument values on every call, so a range driven by other cells or relationships stays live. Cast to f64 for display, matching format_rounded’s existing all-numeric-types-as-f64 convention.