Instance Method

rulerView(_:didAdd:)

Modifies the paragraph style of the paragraphs containing the selection to accommodate a new marker.

Declaration

func rulerView(_ ruler: NSRulerView, didAdd marker: NSRulerMarker)

Parameters

aRulerView

The ruler view sending the message.

aMarker

The marker that was added.

Discussion

This method records the change by invoking didChangeText() after adding the marker.

NSTextView checks for permission to make the change in its rulerView(_:shouldAdd:) method, which invokes shouldChangeText(in:replacementString:) to send out the proper request and notifications, and only invokes this method if permission is granted.

See Also

NSRulerView Client Methods

func rulerView(NSRulerView, didMove: NSRulerMarker)

Modifies the paragraph style of the paragraphs containing the selection to record the new location of the marker.

func rulerView(NSRulerView, willMove: NSRulerMarker, toLocation: CGFloat) -> CGFloat

Returns a potentially modified location to which the marker should be moved.

func rulerView(NSRulerView, shouldMove: NSRulerMarker) -> Bool

Returns whether the marker should be moved.

func rulerView(NSRulerView, didRemove: NSRulerMarker)

Modifies the paragraph style of the paragraphs containing the selection—if possible—by removing the specified marker.

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

Returns whether the marker should be removed.

func rulerView(NSRulerView, shouldAdd: NSRulerMarker) -> Bool

Returns whether a new marker can be added.

func rulerView(NSRulerView, willAdd: NSRulerMarker, atLocation: CGFloat) -> CGFloat

Returns a potentially modified location to which the marker should be added.

func rulerView(NSRulerView, handleMouseDownWith: NSEvent)

Adds a left tab marker to the ruler at the location clicked.