---
title: "browser(_:headerViewControllerForItem:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nsbrowserdelegate/browser(_:headerviewcontrollerforitem:)"
---

# browser(_:headerViewControllerForItem:)

Asks the delegate for a controller that provides a header view for the specified column item.

## Declaration

```swift
@MainActor optional func browser(_ browser: NSBrowser, headerViewControllerForItem item: Any?) -> NSViewController?
```

## Parameters

- `browser`: The browser.
- `item`: The column item.

## Return Value

Return Value A view controller that provides a header view, or nil to omit the header view.

## Discussion

Discussion The returned controller’s represented object will be set to the column item. This method is called only if the delegate implements the item data source methods.

## See Also

### Accessing Components

- [browser(_:child:ofItem:)](appkit/nsbrowserdelegate/browser(_:child:ofitem:).md)
- [browser(_:isLeafItem:)](appkit/nsbrowserdelegate/browser(_:isleafitem:).md)
- [browser(_:shouldEditItem:)](appkit/nsbrowserdelegate/browser(_:shouldedititem:).md)
- [browser(_:objectValueForItem:)](appkit/nsbrowserdelegate/browser(_:objectvalueforitem:).md)
- [browser(_:setObjectValue:forItem:)](appkit/nsbrowserdelegate/browser(_:setobjectvalue:foritem:).md)
- [rootItem(for:)](appkit/nsbrowserdelegate/rootitem(for:).md)
- [browser(_:previewViewControllerForLeafItem:)](appkit/nsbrowserdelegate/browser(_:previewviewcontrollerforleafitem:).md)