Function __column_selector

external/.datatables.js:7819–7931

(settings, selector, opts)

	}

	var __column_selector = function (settings, selector, opts) {
		var columns = settings.aoColumns,
			names = _pluck(columns, "sName"),
			titles = _pluck(columns, "sTitle"),
			cells = DataTable.util.get("[].[].cell")(settings.aoHeader),
			nodes = _unique(_flatten([], cells))

		var run = function (s) {
			var selInt = _intVal(s)

			// Selector - all
			if (s === "") {
				return _range(columns.length)
			}

			// Selector - index
			if (selInt !== null) {
				return [
					selInt >= 0
						? selInt // Count from left
						: columns.length + selInt // Count from right (+ because its a negative value)
				]
			}

			// Selector = function
			if (typeof s === "function") {
				var rows = _selector_row_indexes(settings, opts)

				return columns.map(function (col, idx) {
					return s(idx, __columnData(settings, idx, 0, 0, rows), __column_header(settings, idx)) ? idx : null
				})
			}

			// jQuery or string selector
			var match = typeof s === "string" ? s.match(__re_column_selector) : ""

			if (match) {
				switch (match[2]) {
					case "visIdx":
					case "visible":
						// Selector is a column index
						if (match[1] && match[1].match(/^\d+$/)) {
							var idx = parseInt(match[1], 10)

							// Visible index given, convert to column index
							if (idx < 0) {
								// Counting from the right
								var visColumns = columns.map(function (col, i) {
									return col.bVisible ? i : null
								})
								return [visColumns[visColumns.length + idx]]
							}
							// Counting from the left
							return [_fnVisibleToColumnIndex(settings, idx)]
						}

						return columns.map(function (col, idx) {
							// Not visible, can't match