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# PDFDocumentDelegate

The delegate for the `PDFDocument` object.

```
protocol PDFDocumentDelegate : NSObjectProtocol
```

## Topics

### Managing Document Security

[`documentDidUnlock(_:)`](/documentation/PDFKit/PDFDocumentDelegate/documentDidUnlock(_:))

Called when the `PDFDocumentDidUnlockNotification` notification is posted.

### Getting Document Search Notifications

[`didMatchString(_:)`](/documentation/PDFKit/PDFDocumentDelegate/didMatchString(_:))

Called for every match found during a find operation.

[`documentDidBeginDocumentFind(_:)`](/documentation/PDFKit/PDFDocumentDelegate/documentDidBeginDocumentFind(_:))

Called when the `PDFDocumentDidBeginFindNotification` notification is posted.

[`documentDidBeginPageFind(_:)`](/documentation/PDFKit/PDFDocumentDelegate/documentDidBeginPageFind(_:))

Called when the `PDFDocumentDidBeginPageFindNotification` notification is posted.

[`documentDidEndDocumentFind(_:)`](/documentation/PDFKit/PDFDocumentDelegate/documentDidEndDocumentFind(_:))

Called when the `PDFDocumentDidEndFindNotification` notification is posted.

[`documentDidEndPageFind(_:)`](/documentation/PDFKit/PDFDocumentDelegate/documentDidEndPageFind(_:))

Called when the `PDFDocumentDidEndPageFindNotification` notification is posted.

[`documentDidFindMatch(_:)`](/documentation/PDFKit/PDFDocumentDelegate/documentDidFindMatch(_:))

Called when the `PDFDocumentDidFindMatchNotification` notification is posted.

### Wrapping Document Elements

[`classForPage()`](/documentation/PDFKit/PDFDocumentDelegate/classForPage())

Returns a `PDFPage` subclass for a page object.

[`class(forAnnotationClass:)`](/documentation/PDFKit/PDFDocumentDelegate/class(forAnnotationClass:))

Returns a `PDFAnnotation` subclass for a class.

[`class(forAnnotationType:)`](/documentation/PDFKit/PDFDocumentDelegate/class(forAnnotationType:))

Returns a `PDFAnnotation` subclass for an annotation type.


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