table-core/io.github.tanstacktable.core/Header

Header

A column header cell. Combines the core header members with the ColumnSizing feature members (getResizeHandler/getSize/getStart).

Integer counts (colSpan, rowSpan, depth, index) are Int. Sizes returned by getSize/getStart are Double because resize math can produce fractional pixel values.

Constructors

Header

constructor()

Properties

colSpan

var colSpan: Int

Column span. Mutated by buildHeaderGroups; starts at 0.

column

lateinit var column: Column<TData, TValue>

The column this header represents.

depth

var depth: Int

Depth of this header in the header tree (root = 0).

getContext

lateinit var getContext: () -> HeaderContext<TData, TValue>

Returns the HeaderContext used by header renderers.

getLeafHeaders

lateinit var getLeafHeaders: () -> List<Header<TData, *>>

Returns the flattened list of leaf headers beneath this header.

getResizeHandler

lateinit var getResizeHandler: (contextDocument: Any?) -> (event: Any?) -> Unit

Returns a pointer/touch event handler that drives column resizing for this header. The first parameter is the owner document (browser-only, Any? in commonMain); the returned handler accepts a platform event (also Any? here).

getSize

lateinit var getSize: () -> Double

Returns the current rendered size of this header in pixels.

getStart