Instance Method

ruleEditor(_:numberOfChildrenForCriterion:with:)

Returns the number of child items of a given criterion or row type.

Required.

Declaration

func ruleEditor(_ editor: NSRuleEditor, numberOfChildrenForCriterion criterion: Any?, with rowType: NSRuleEditor.RowType) -> Int

Parameters

editor

The rule editor that sent the message.

criterion

The criterion for which the number of children is required.

rowType

The type of row of criterion.

Return Value

The number of child items of criterion. If criterion is nil, return the number of root criteria for the row type rowType.

Discussion

The delegate must implement this method.

See Also

Providing Data

func ruleEditor(NSRuleEditor, child: Int, forCriterion: Any?, with: NSRuleEditor.RowType) -> Any

Returns the child of a given item at a given index.

Required.

func ruleEditor(NSRuleEditor, displayValueForCriterion: Any, inRow: Int) -> Any

Returns the value for a given criterion.

Required.

func ruleEditor(NSRuleEditor, predicatePartsForCriterion: Any, withDisplayValue: Any, inRow: Int) -> [NSRuleEditor.PredicatePartKey : Any]?

Returns a dictionary representing the parts of the predicate determined by the given criterion and value.

struct NSRuleEditor.PredicatePartKey

These strings are used as keys to the dictionary returned from the delegate’s ruleEditor(_:predicatePartsForCriterion:withDisplayValue:inRow:) optional method. To construct a valid predicate, the union of the dictionaries for each item in the row must contain the required parts.