<!--
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  "framework" : "AppKit",
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  "role" : "Protocol",
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    "kind" : "Protocol",
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  "title" : "NSPopoverDelegate"
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# NSPopoverDelegate

A set of optional methods that a popover delegate can implement to provide additional or custom functionality.

```
protocol NSPopoverDelegate : NSObjectProtocol
```

## Overview

See [`NSPopover`](/documentation/AppKit/NSPopover) for more information on popovers in general.

## Topics

### Popover Window

[`detachableWindow(for:)`](/documentation/AppKit/NSPopoverDelegate/detachableWindow(for:))

Detaches the popover creating a window containing the content.

### Popover Visibility

[`popoverShouldClose(_:)`](/documentation/AppKit/NSPopoverDelegate/popoverShouldClose(_:))

Allows a delegate to override a close request.

[`popoverWillShow(_:)`](/documentation/AppKit/NSPopoverDelegate/popoverWillShow(_:))

Invoked when the popover will show.

[`popoverDidShow(_:)`](/documentation/AppKit/NSPopoverDelegate/popoverDidShow(_:))

Invoked when the popover has been shown.

[`popoverWillClose(_:)`](/documentation/AppKit/NSPopoverDelegate/popoverWillClose(_:))

Invoked when the popover is about to close.

[`popoverDidClose(_:)`](/documentation/AppKit/NSPopoverDelegate/popoverDidClose(_:))

Invoked when the popover did close.

[`popoverDidDetach(_:)`](/documentation/AppKit/NSPopoverDelegate/popoverDidDetach(_:))

Indicates that a popover has been released while it’s in an implicitly detached state.

[`popoverShouldDetach(_:)`](/documentation/AppKit/NSPopoverDelegate/popoverShouldDetach(_:))

Returns a Boolean value that indicates whether a popover should detach from its positioning view and become a separate window.


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