All Known Implementing Classes:

NSTextContentStorage
```
public interface NSTextStorageObserving
```
NSTextStorageObserving defines the protocol for NSTextStorage controller objects observing changes in the text backing-store. API-Since: 15.0

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface NSTextStorageObserving.Block_performEditingTransactionForTextStorageUsingBlock

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`performEditingTransactionForTextStorageUsingBlock(@NotNull NSTextStorage textStorage, @NotNull NSTextStorageObserving.Block_performEditingTransactionForTextStorageUsingBlock transaction)`	Transactional editing support
`void`	`processEditingForTextStorageEditedRangeChangeInLengthInvalidatedRange(@NotNull NSTextStorage textStorage, long editMask, NSRange newCharRange, long delta, NSRange invalidatedCharRange)`	The newCharRange is the range in the final string which was explicitly edited.
`void`	`setTextStorage(@Nullable NSTextStorage value)`	The document object
`@Nullable NSTextStorage`	`textStorage()`	The document object

Method Detail

performEditingTransactionForTextStorageUsingBlock

void performEditingTransactionForTextStorageUsingBlock(@NotNull
                                                       @NotNull NSTextStorage textStorage,
                                                       @NotNull
                                                       @NotNull NSTextStorageObserving.Block_performEditingTransactionForTextStorageUsingBlock transaction)

Transactional editing support

processEditingForTextStorageEditedRangeChangeInLengthInvalidatedRange

void processEditingForTextStorageEditedRangeChangeInLengthInvalidatedRange(@NotNull
                                                                           @NotNull NSTextStorage textStorage,
                                                                           long editMask,
                                                                           NSRange newCharRange,
                                                                           long delta,
                                                                           NSRange invalidatedCharRange)

The newCharRange is the range in the final string which was explicitly edited. The invalidatedRange includes portions that changed as a result of attribute fixing. invalidatedRange is either equal to newCharRange or larger. Controllers should not change the contents of the text storage during the execution of this message.

setTextStorage

void setTextStorage(@Nullable
                    @Nullable NSTextStorage value)

The document object

textStorage

@Nullable
@Nullable NSTextStorage textStorage()