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rulerView(_:shouldRemove:)

Returns whether the marker should be removed.

Declaration

func rulerView(_ ruler: NSRulerView, shouldRemove marker: NSRulerMarker) -> Bool

Parameters

  • ruler:

    The ruler view sending the message.

  • marker:

    The marker to be removed.

Return Value

true if aMarker can be removed, false otherwise.

Discussion

Only markers that represent tab stops can be removed. This method returns true if aMarker represents an NSTextTab object, false otherwise. Because this method can be invoked repeatedly as the user drags a ruler marker, it returns that value immediately. If the change is allowed and the user actually removes the marker, the receiver is also sent a rulerView(_:didRemove:) message.

See Also

Supporting the ruler view