UIKBTree

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UIKBTree is an undocumented class as of iOS 5.0 which represents iOS keyboard elements such as character key, shift key, delete key, language switch key and so on.

Types

More than one classification Apple has made to UIKBTree, here are known:

Generic Types

The list is determined by the method +[UIKBTree_Compile stringEnumForType:]

This kind of type is specified when creating an instance of UIKBTree: UIKBTree *tree = [[UIKBTree alloc] initWithType:genericType]

Type	String Enumeration	Availability
1	UIKBTreeTypeKeyboard
2	UIKBTreeTypeKeyplane
3	UIKBTreeTypeKeylayout
4	UIKBTreeTypeKeySet
5	UIKBTreeTypeGeometrySet
6	UIKBTreeTypeAttributeSet
7	UIKBTreeTypeList
8	UIKBTreeTypeKey
9	UIKBTreeTypeShape
10	UIKBTreeTypeAttributes
11	UIKBTreeTypeIdentifiers
12	UIKBTreeTypeAdaptiveKey	iOS 7.0+
13	UIKBTreeTypeMergePolicy	iOS 8.0+

Display Types

The list is determined by the private C function NSInteger displayTypeFromString(NSString *)

The display type is a property of any UIKBTree instance: @property(assign) NSInteger displayType

Display type		String representation	Availability
iOS 5.0 - 8.3	iOS 9.0+	String representation	Availability
0		String
1		CandidateList
2		Command
3		Delete
4		Dictation
5		Dismiss
6		Drag
7		DualString
8		DynamicString
9		Emoji
10		TenKeyKeyplaneSwitchOff
11		TenKeyKeyplaneSwitchOn
12		Handwriting
13		International
14		KeyplaneSwitch
15		LeftDarkAndNoRightDivider
16		LightBottom
17		LightBottomAndRight
18		More
19		NoRightDivider
20		NumberPad
21		Return
22		ReverseVerticalDark
23		Shift
24		SmallKana
25		Space
26		Tab
27		Top-Level-Domain
28		Top-Level-Domain-Variant
29		TwoVerticalDark
30		TwoVerticalLight
31		VoicedKey
32		MultitapComplete
33		MultitapReverse
34		WALongVowelSign
35		TenKeyRoman
36		EmojiInputView	iOS 6.0+
37		EmojiCategoryControl	iOS 6.0+
38		Letter-Line	iOS 8.0+
39		Bold	iOS 8.0+
40		Italic	iOS 8.0+
41		Underline	iOS 8.0+
42		Cut	iOS 8.0+
43		Copy	iOS 8.0+
44		Paste	iOS 8.0+
45		LeftArrow	iOS 8.0+
46		RightArrow	iOS 8.0+
47		PredictionActive	iOS 8.0+
-	48	UCBSelectionBackground	iOS 9.0+
48	49	BIU	iOS 8.3+
49	50	Divider	iOS 8.3+
-	51	Caps-Lock	iOS 9.0+
-	52	Dictation-Display	iOS 9.3+
-	53	MessageWriteboard	iOS 10.0+

Interaction Types

The list is determined by the private C function NSInteger interactionTypeFromString(NSString *)

The interaction type is a property of any UIKBTree instance: @property(assign) NSInteger interactionType

Display type	String representation	Availability
0	None
1	String
2	Popup
3	CandidateList
4	Delete
5	Dictation
6	Dismiss
7	Drag
8	Handwriting
9	International
10	KeyplaneSwitch
11	More
12	Redo
13	Return
14	Shift
15	Space
16	Flick
17	Undo
18	EmojiInputView	iOS 6.0+
19	EmojiCategoryControl	iOS 6.0+
20	MultitapComplete	iOS 7.0+
21	MultitapReverse	iOS 7.0+
22	RecentInput	iOS 7.0+
23	Clear	iOS 7.0+
24	RevealHiddenCandidates	iOS 7.0+
25	SelectNextCandidate	iOS 7.0+
26	SelectPreviousCandidate	iOS 7.0+
27	AcceptAutocorrection*	iOS 7.0+
28	Bold	iOS 8.0+
29	Italic	iOS 8.0+
30	Underline	iOS 8.0+
31	Cut	iOS 8.0+
32	Copy	iOS 8.0+
33	Paste	iOS 8.0+
34	LeftArrow	iOS 8.0+
35	RightArrow	iOS 8.0+
36	AssertLayoutTag	iOS 8.0+
37	Tab	iOS 9.0+
38	Caps-Lock	iOS 9.0+
39	Dictation-Display	iOS 9.3+
40	MessageWriteboard	iOS 10.0+

Note (*): It was AcceptAutoCorrection prior to iOS 8.0