---
title: "outlineView(_:shouldTrackCell:for:item:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nsoutlineviewdelegate/outlineview(_:shouldtrackcell:for:item:)"
---

# outlineView(_:shouldTrackCell:for:item:)

Returns a Boolean value that indicates whether a given cell should be tracked.

## Declaration

```swift
@MainActor optional func outlineView(_ outlineView: NSOutlineView, shouldTrackCell cell: NSCell, for tableColumn: NSTableColumn?, item: Any) -> Bool
```

## Parameters

- `outlineView`: The outline view that sent the message.
- `cell`: The cell used to display item item in column tableColumn
- `tableColumn`: A table column in the outline view.
- `item`: An item in the outline view.

## Return Value

Return Value true if the cell should be tracked for the item item in column tableColumn, otherwise false.

## Discussion

Discussion Normally, only selectable or selected cells can be tracked. If you implement this method, cells which are not selectable or selected can be tracked (and vice-versa). For example, this allows you to have a button cell in a table which does not change the selection, but can still be clicked on and tracked.