Adlai Holler d4725a51f2 Add Experimental Text Node Implementation (#259)
* Add experimental text node implementation, based on YYText

* Fix warnings and alert when unimplemented experimental features are used.

* Address feedback from review

* Extend the cthulog

* Update license headers
2017-05-14 12:02:07 -07:00

88 lines
2.8 KiB
Objective-C
Executable File

//
// ASTextInput.h
// Modified from YYText <https://github.com/ibireme/YYText>
//
// Created by ibireme on 15/4/17.
// Copyright (c) 2015 ibireme.
//
// This source code is licensed under the MIT-style license found in the
// LICENSE file in the root directory of this source tree.
//
#import <UIKit/UIKit.h>
NS_ASSUME_NONNULL_BEGIN
/**
Text position affinity. For example, the offset appears after the last
character on a line is backward affinity, before the first character on
the following line is forward affinity.
*/
typedef NS_ENUM(NSInteger, ASTextAffinity) {
ASTextAffinityForward = 0, ///< offset appears before the character
ASTextAffinityBackward = 1, ///< offset appears after the character
};
/**
A ASTextPosition object represents a position in a text container; in other words,
it is an index into the backing string in a text-displaying view.
ASTextPosition has the same API as Apple's implementation in UITextView/UITextField,
so you can alse use it to interact with UITextView/UITextField.
*/
@interface ASTextPosition : UITextPosition <NSCopying>
@property (nonatomic, readonly) NSInteger offset;
@property (nonatomic, readonly) ASTextAffinity affinity;
+ (instancetype)positionWithOffset:(NSInteger)offset;
+ (instancetype)positionWithOffset:(NSInteger)offset affinity:(ASTextAffinity) affinity;
- (NSComparisonResult)compare:(id)otherPosition;
@end
/**
A ASTextRange object represents a range of characters in a text container; in other words,
it identifies a starting index and an ending index in string backing a text-displaying view.
ASTextRange has the same API as Apple's implementation in UITextView/UITextField,
so you can alse use it to interact with UITextView/UITextField.
*/
@interface ASTextRange : UITextRange <NSCopying>
@property (nonatomic, readonly) ASTextPosition *start;
@property (nonatomic, readonly) ASTextPosition *end;
@property (nonatomic, readonly, getter=isEmpty) BOOL empty;
+ (instancetype)rangeWithRange:(NSRange)range;
+ (instancetype)rangeWithRange:(NSRange)range affinity:(ASTextAffinity) affinity;
+ (instancetype)rangeWithStart:(ASTextPosition *)start end:(ASTextPosition *)end;
+ (instancetype)defaultRange; ///< <{0,0} Forward>
- (NSRange)asRange;
@end
/**
A ASTextSelectionRect object encapsulates information about a selected range of
text in a text-displaying view.
ASTextSelectionRect has the same API as Apple's implementation in UITextView/UITextField,
so you can alse use it to interact with UITextView/UITextField.
*/
@interface ASTextSelectionRect : UITextSelectionRect <NSCopying>
@property (nonatomic, readwrite) CGRect rect;
@property (nonatomic, readwrite) UITextWritingDirection writingDirection;
@property (nonatomic, readwrite) BOOL containsStart;
@property (nonatomic, readwrite) BOOL containsEnd;
@property (nonatomic, readwrite) BOOL isVertical;
@end
NS_ASSUME_NONNULL_END