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TUIKit/TUIChat/UI_Classic/Cell/Chat/TUIJoinGroupMessageCell.m

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+
+//  Created by Tencent on 2023/06/09.
+//  Copyright © 2023 Tencent. All rights reserved.
+#import "TUIJoinGroupMessageCell.h"
+#import <TIMCommon/TIMDefine.h>
+
+@interface TUIJoinGroupMessageCell () <UITextViewDelegate>
+
+@property(nonatomic, strong) UITextView *textView;
+
+@end
+
+@implementation TUIJoinGroupMessageCell
+
+- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
+    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
+    if (self) {
+        _textView = [[UITextView alloc] init];
+        _textView.editable = NO;
+        _textView.scrollEnabled = NO;
+        _textView.backgroundColor = [UIColor clearColor];
+        _textView.textColor = [UIColor d_systemGrayColor];
+        _textView.textContainerInset = UIEdgeInsetsMake(5, 0, 5, 0);
+        _textView.layer.cornerRadius = 3;
+        _textView.delegate = self;
+
+        _textView.textAlignment = NSTextAlignmentLeft;
+        [self.messageLabel removeFromSuperview];
+        [self.container addSubview:_textView];
+        _textView.delaysContentTouches = NO;
+    }
+    return self;
+}
+
+- (void)fillWithData:(TUIJoinGroupMessageCellData *)data;
+{
+    [super fillWithData:data];
+    self.joinData = data;
+    self.nameLabel.hidden = YES;
+    self.avatarView.hidden = YES;
+    self.retryView.hidden = YES;
+    [self.indicator stopAnimating];
+    
+    NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@", data.content]];
+    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
+    paragraphStyle.alignment = NSTextAlignmentCenter;
+    NSDictionary *attributeDict = @{
+        NSFontAttributeName : self.messageLabel.font,
+        NSForegroundColorAttributeName : [UIColor d_systemGrayColor],
+        NSParagraphStyleAttributeName : paragraphStyle
+    };
+    [attributeString setAttributes:attributeDict range:NSMakeRange(0, attributeString.length)];
+    
+    if (data.userNameList.count > 0) {
+        NSArray *nameRangeList = [self findRightRangeOfAllString:data.userNameList inText:attributeString.string];
+        int i = 0;
+        for (i = 0; i < nameRangeList.count; i++) {
+            NSString *nameRangeString = nameRangeList[i];
+            NSRange nameRange = NSRangeFromString(nameRangeString);
+            [attributeString addAttribute:NSLinkAttributeName value:[NSString stringWithFormat:@"%d", i] range:nameRange];
+        }
+    }
+    self.textView.attributedText = attributeString;
+
+    // tell constraints they need updating
+    [self setNeedsUpdateConstraints];
+
+    // update constraints now so we can animate the change
+    [self updateConstraintsIfNeeded];
+
+    [self layoutIfNeeded];
+
+}
+
++ (BOOL)requiresConstraintBasedLayout {
+    return YES;
+}
+
+// this is Apple's recommended place for adding/updating constraints
+- (void)updateConstraints {
+    [super updateConstraints];
+    
+    [self.container mas_remakeConstraints:^(MASConstraintMaker *make) {
+        make.center.mas_equalTo(self.contentView);
+        make.size.mas_equalTo(self.contentView);
+    }];
+
+    if(self.textView.superview) {
+        [self.textView mas_remakeConstraints:^(MASConstraintMaker *make) {
+            make.center.mas_equalTo(self.container);
+            make.size.mas_equalTo(self.contentView);
+        }];
+    }
+}
+- (void)layoutSubviews {
+    [super layoutSubviews];
+    self.container.tui_mm_center();
+    self.textView.mm_fill();
+}
+
+- (void)onSelectUserName:(NSInteger)index {
+    if (self.joinGroupDelegate && [self.joinGroupDelegate respondsToSelector:@selector(didTapOnRestNameLabel:withIndex:)])
+        [self.joinGroupDelegate didTapOnRestNameLabel:self withIndex:index];
+}
+
+- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange {
+    NSArray *userNames = _joinData.userNameList;
+    NSURL *urlRecognizer = [[NSURL alloc] init];
+
+    for (int i = 0; i < userNames.count; i++) {
+        urlRecognizer = [NSURL URLWithString:[NSString stringWithFormat:@"%d", i]];
+        if ([URL isEqual:urlRecognizer]) {
+            [self onSelectUserName:i];
+        }
+    }
+
+    return NO;
+}
+
+/**
+ * To obtain the exact position of the nickname in the text content, the following properties are used: the storage order of userName in the array must be the
+ * same as the order in which the final text is displayed. For example: the text content is, "A invited B, C, D to join the group", then the storage order of
+ * the elements in userName must be ABCD. Therefore, the method of "searching from the beginning and searching in succession" is used. For example, find the
+ * first element A first, because of the characteristics of rangeOfString, it must find the A at the head position. After finding A at the head position, we
+ * remove A from the search range, and the search range becomes "B, C, D are invited to join the group", and then continue to search for the next element, which
+ * is B.
+ */
+- (NSMutableArray *)findRightRangeOfAllString:(NSMutableArray<NSString *> *)stringList inText:(NSString *)text {
+    NSMutableArray *rangeList = [NSMutableArray array];
+    NSUInteger beginLocation = 0;
+    NSEnumerator *enumer = [stringList objectEnumerator];
+
+    NSString *string = [NSString string];
+    while (string = [enumer nextObject]) {
+        NSRange newRange = NSMakeRange(beginLocation, text.length - beginLocation);
+        NSRange stringRange = [text rangeOfString:string options:NSLiteralSearch range:newRange];
+
+        if (stringRange.length > 0) {
+            [rangeList addObject:NSStringFromRange(stringRange)];
+            beginLocation = stringRange.location + stringRange.length;
+        }
+    }
+    return rangeList;
+}
+@end