mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
66 lines
2.9 KiB
Objective-C
66 lines
2.9 KiB
Objective-C
//
|
|
// ASMutableAttributedStringBuilder.h
|
|
// Texture
|
|
//
|
|
// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
|
|
// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
|
|
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
|
|
#import <Foundation/Foundation.h>
|
|
#import <AsyncDisplayKit/ASBaseDefines.h>
|
|
|
|
NS_ASSUME_NONNULL_BEGIN
|
|
|
|
/*
|
|
* Use this class to compose new attributed strings. You may use the normal
|
|
* attributed string calls on this the same way you would on a normal mutable
|
|
* attributed string, but it coalesces your changes into transactions on the
|
|
* actual string allowing improvements in performance.
|
|
*
|
|
* @discussion This is a use-once and throw away class for each string you make.
|
|
* Since this class is designed for increasing performance, we actually hand
|
|
* back the internally managed mutable attributed string in the
|
|
* `composedAttributedString` call. So once you make that call, any more
|
|
* changes will actually modify the string that was handed back to you in that
|
|
* method.
|
|
*
|
|
* Combination of multiple calls into single attribution is managed through
|
|
* merging of attribute dictionaries over ranges. For best performance, call
|
|
* collections of attributions over a single range together. So for instance,
|
|
* don't call addAttributes for range1, then range2, then range1 again. Group
|
|
* them together so you call addAttributes for both range1 together, and then
|
|
* range2.
|
|
*
|
|
* Also please note that switching between addAttribute and setAttributes in the
|
|
* middle of composition is a bad idea for performance because they have
|
|
* semantically different meanings, and trigger a commit of the pending
|
|
* attributes.
|
|
*
|
|
* Please note that ALL of the standard NSString methods are left unimplemented.
|
|
*/
|
|
AS_SUBCLASSING_RESTRICTED
|
|
@interface ASMutableAttributedStringBuilder : NSMutableAttributedString
|
|
|
|
- (instancetype)initWithString:(NSString *)str attributes:(nullable NSDictionary<NSString *, id> *)attrs;
|
|
- (instancetype)initWithAttributedString:(NSAttributedString *)attrStr;
|
|
|
|
- (void)replaceCharactersInRange:(NSRange)range withString:(NSString *)str;
|
|
- (void)setAttributes:(nullable NSDictionary<NSString *, id> *)attrs range:(NSRange)range;
|
|
|
|
- (void)addAttribute:(NSString *)name value:(id)value range:(NSRange)range;
|
|
- (void)addAttributes:(NSDictionary<NSString *, id> *)attrs range:(NSRange)range;
|
|
- (void)removeAttribute:(NSString *)name range:(NSRange)range;
|
|
|
|
- (void)replaceCharactersInRange:(NSRange)range withAttributedString:(NSAttributedString *)attrString;
|
|
- (void)insertAttributedString:(NSAttributedString *)attrString atIndex:(NSUInteger)loc;
|
|
- (void)appendAttributedString:(NSAttributedString *)attrString;
|
|
- (void)deleteCharactersInRange:(NSRange)range;
|
|
- (void)setAttributedString:(NSAttributedString *)attrString;
|
|
|
|
- (NSMutableAttributedString *)composedAttributedString;
|
|
|
|
@end
|
|
|
|
NS_ASSUME_NONNULL_END
|