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TUIKit/TIMCommon/BaseCell/TUISystemMessageCell.m

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+//
+//  TUISystemMessageCell.m
+//  UIKit
+//
+//  Created by annidyfeng on 2019/5/30.
+//  Copyright © 2023 Tencent. All rights reserved.
+//
+
+#import "TUISystemMessageCell.h"
+#import <TIMCommon/TIMDefine.h>
+#import <TUICore/NSString+TUIUtil.h>
+
+@interface TUISystemMessageCell ()
+@property(nonatomic, strong) UILabel *messageLabel;
+@property TUISystemMessageCellData *systemData;
+@end
+
+@implementation TUISystemMessageCell
+
+- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
+    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
+    if (self) {
+        _messageLabel = [[UILabel alloc] init];
+        _messageLabel.textAlignment = NSTextAlignmentCenter;
+        _messageLabel.numberOfLines = 0;
+        _messageLabel.backgroundColor = [UIColor clearColor];
+        _messageLabel.layer.cornerRadius = 3;
+        [_messageLabel.layer setMasksToBounds:YES];
+        [self.container addSubview:_messageLabel];
+        self.backgroundColor = [UIColor clearColor];
+        self.contentView.backgroundColor = [UIColor clearColor];
+    }
+    return self;
+}
+
++ (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);
+    }];
+    [self.messageLabel sizeToFit];
+    if(self.messageLabel.superview) {
+        [self.messageLabel mas_remakeConstraints:^(MASConstraintMaker *make) {
+            make.center.mas_equalTo(self.container);
+            make.leading.trailing.mas_equalTo(self.container);
+        }];
+    }
+}
+
+- (void)fillWithData:(TUISystemMessageCellData *)data;
+{
+    [super fillWithData:data];
+    self.systemData = data;
+    
+    self.messageLabel.textColor = TUISystemMessageCellData.textColor ? : data.contentColor;
+    self.messageLabel.font = TUISystemMessageCellData.textFont ? : data.contentFont;
+    self.messageLabel.backgroundColor = TUISystemMessageCellData.textBackgroundColor ? : [UIColor clearColor];
+    self.messageLabel.attributedText = data.attributedString;
+    
+    self.nameLabel.hidden = YES;
+    self.avatarView.hidden = YES;
+    self.retryView.hidden = YES;
+    [self.indicator stopAnimating];
+    
+    // tell constraints they need updating
+    [self setNeedsUpdateConstraints];
+    // update constraints now so we can animate the change
+    [self updateConstraintsIfNeeded];
+    [self layoutIfNeeded];
+}
+
+- (void)layoutSubviews {
+    [super layoutSubviews];
+}
+
+
+#pragma mark - TUIMessageCellProtocol
++ (CGFloat)getEstimatedHeight:(TUIMessageCellData *)data {
+    return 42.f;
+}
+
++ (CGFloat)getHeight:(TUIMessageCellData *)data withWidth:(CGFloat)width {
+    return [self getContentSize:data].height + kScale375(16);
+}
+
++ (CGSize)getContentSize:(TUIMessageCellData *)data {
+    NSAssert([data isKindOfClass:TUISystemMessageCellData.class], @"data must be kind of TUISystemMessageCellData");
+    TUISystemMessageCellData *systemCellData = (TUISystemMessageCellData *)data;
+    
+    static CGSize maxSystemSize;
+    if (CGSizeEqualToSize(maxSystemSize, CGSizeZero)) {
+        maxSystemSize = CGSizeMake(Screen_Width, MAXFLOAT);
+    }
+    CGSize size = [systemCellData.attributedString.string textSizeIn:maxSystemSize font:systemCellData.contentFont];
+    size.height += 10;
+    size.width += 16;
+    return size;
+}
+
+@end