featherVoice/QXLive/Tools/QXTextView.m

//
//  QXTextView.m
//  QXLive
//
//  Created by 启星 on 2025/5/15.
//

#import "QXTextView.h"
@interface QXTextView()<UITextViewDelegate>

@property (nonatomic,strong)UILabel *maxCountLabel;
@end
@implementation QXTextView

- (instancetype)init
{
    self = [super init];
    if (self) {
        [self initSubview];
    }
    return self;
}
- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self initSubview];
    }
    return self;
}

-(void)initSubview{
    self.lengthColor = QXConfig.themeColor;
    self.maxLength = 120;
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textViewDidChange:) name:UITextViewTextDidChangeNotification object:nil];
    self.delegate = self;
    [self addSubview:self.placehoulderLabel];
    
    self.returnKeyType = UIReturnKeyDone;
    [self addSubview:self.maxCountLabel];
    
}
-(void)layoutSubviews{
    [super layoutSubviews];
    self.placehoulderLabel.frame = CGRectMake(10, 10, self.width-20, 50);
    [self.placehoulderLabel sizeToFit];
    self.maxCountLabel.frame = CGRectMake(10, self.height-20, self.width-20, 15);
}
-(void)textViewDidBeginEditing:(UITextView *)textView{
    if (textView.text.length == 0) {
        self.placehoulderLabel.hidden = NO;
    }else{
        self.placehoulderLabel.hidden = YES;
    }
}
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{

   if([text isEqualToString:@"\n"]){

       [textView resignFirstResponder];

       return NO;

   }

   return YES;

}

-(void)textViewDidChange:(UITextView*)textView{
    
    if (self.text.length == 0) {
        self.placehoulderLabel.hidden = NO;
    }else{
        self.placehoulderLabel.hidden = YES;
    }
    
    if (self.text.length > self.maxLength) {
        self.text = [self.text substringToIndex:self.maxLength];
        return;
    }
    if (self.maxLengthHidden) {
        return;
    }
    NSString *length = [NSString stringWithFormat:@"%ld",self.maxLength - self.text.length];
    NSString *str = [NSString stringWithFormat:@"%@%@%@",QXText(@"还可输入"),length,QXText(@"字")];
    NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:str];
    [attr yy_setColor:self.lengthColor range:[str rangeOfString:length]];
    self.maxCountLabel.attributedText = attr;
}

-(void)setMaxLength:(NSInteger)maxLength{
    _maxLength = maxLength;
    NSString *length = [NSString stringWithFormat:@"%ld",self.maxLength - self.text.length];
    NSString *str = [NSString stringWithFormat:@"%@%@%@",QXText(@"还可输入"),length,QXText(@"字")];
    NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:str];
    [attr yy_setColor:self.lengthColor range:[str rangeOfString:length]];
    self.maxCountLabel.attributedText = attr;
}

-(void)setMaxLengthHidden:(BOOL)maxLengthHidden{
    _maxLengthHidden = maxLengthHidden;
    self.maxCountLabel.hidden = YES;
}
-(void)setPlacehoulderColor:(UIColor *)placehoulderColor{
    _placehoulderColor = placehoulderColor;
    self.placehoulderLabel.textColor = placehoulderColor;
}
-(void)setPlacehoulder:(NSString *)placehoulder{
    _placehoulder = placehoulder;
    self.placehoulderLabel.text = placehoulder;
}
-(void)setPlacehoulderFont:(UIFont *)placehoulderFont{
    _placehoulderFont = placehoulderFont;
    self.placehoulderLabel.font = placehoulderFont;
}
-(void)setLengthColor:(UIColor *)lengthColor{
    _lengthColor = lengthColor;
}

-(UILabel *)placehoulderLabel{
    if (!_placehoulderLabel) {
        _placehoulderLabel = [[UILabel alloc] init];
        _placehoulderLabel.numberOfLines = 0;
        _placehoulderLabel.font = [UIFont systemFontOfSize:12.f];
        _placehoulderLabel.textColor = RGB16(0x9B9B9B);
        MJWeakSelf
        [_placehoulderLabel addTapBlock:^(id  _Nonnull obj) {
            [weakSelf becomeFirstResponder];
        }];
    }
    return _placehoulderLabel;
}

-(UILabel *)maxCountLabel{
    if (!_maxCountLabel) {
        _maxCountLabel = [[UILabel alloc] init];
        _maxCountLabel.font = [UIFont systemFontOfSize:9];
        _maxCountLabel.textAlignment = NSTextAlignmentRight;
        _maxCountLabel.textColor = RGB16(0x666666);
        NSString *length = [NSString stringWithFormat:@"%ld",self.maxLength - self.text.length];
        NSString *str = [NSString stringWithFormat:@"%@%@%@",QXText(@"还可输入"),length,QXText(@"字")];
        NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:str];
        [attr yy_setColor:self.lengthColor range:[str rangeOfString:length]];
        _maxCountLabel.attributedText = attr;
    }
    return _maxCountLabel;
}
@end