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+#import "RNNTitleViewHelper.h"
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+#import <React/RCTConvert.h>
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+#import "RCTHelpers.h"
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+
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+@implementation RNNTitleView
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+
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+
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+@end
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+
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+@interface RNNTitleViewHelper ()
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+
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+@property (nonatomic, weak) UIViewController *viewController;
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+
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+@property (nonatomic, strong) NSString *title;
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+@property (nonatomic, strong) NSString *subtitle;
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+@property (nonatomic, strong) id titleImageData;
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+@property (nonatomic) BOOL isSetSubtitle;
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+
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+@property (nonatomic, strong) RNNTitleView *titleView;
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+
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+@end
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+
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+
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+@implementation RNNTitleViewHelper
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+
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+- (instancetype)init:(UIViewController*)viewController
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+ title:(NSString*)title subtitle:(NSString*)subtitle
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+ titleImageData:(id)titleImageData
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+ isSetSubtitle:(BOOL)isSetSubtitle {
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+ self = [super init];
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+ if (self) {
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+ self.viewController = viewController;
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+ if (isSetSubtitle){
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+ self.title = viewController.navigationItem.title;
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+ } else {
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+ self.title = [RNNTitleViewHelper validateString:title];
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+ }
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+ self.subtitle = [RNNTitleViewHelper validateString:subtitle];
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+ self.titleImageData = titleImageData;
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+ }
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+ return self;
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+}
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+
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++(NSString*)validateString:(NSString*)string {
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+ if ([string isEqual:[NSNull null]]) {
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+ return nil;
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+ }
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+
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+ return string;
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+}
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+
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+-(void)setup:(RNNTitleOptions*)style {
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+
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+ CGRect navigationBarBounds = self.viewController.navigationController.navigationBar.bounds;
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+
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+ self.titleView = [[RNNTitleView alloc] initWithFrame:navigationBarBounds];
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+ self.titleView.backgroundColor = [UIColor clearColor];
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+ self.titleView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
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+ self.titleView.clipsToBounds = YES;
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+
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+ self.viewController.navigationItem.title = self.title;
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+
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+ if ([self isTitleOnly]) {
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+ self.viewController.navigationItem.titleView = nil;
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+ return;
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+ }
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+
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+ if ([self isTitleImage]) {
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+ [self setupTitleImage];
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+ return;
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+ }
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+
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+ if (self.subtitle) {
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+ self.titleView.subtitleLabel = [self setupSubtitle:style];
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+ }
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+
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+ if (self.title) {
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+ self.titleView.titleLabel = [self setupTitle:style];
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+ }
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+
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+ [self centerTitleView:navigationBarBounds titleLabel:self.titleView.titleLabel subtitleLabel:self.titleView.subtitleLabel];
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+
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+ self.viewController.navigationItem.titleView = self.titleView;
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+}
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+
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+
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+-(BOOL)isTitleOnly {
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+ return self.title && !self.subtitle && !self.titleImageData;
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+}
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+
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+
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+-(BOOL)isTitleImage {
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+ return self.titleImageData && ![self.titleImageData isEqual:[NSNull null]];
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+}
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+
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+
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+-(void)setupTitleImage {
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+ UIImage *titleImage = [RCTConvert UIImage:self.titleImageData];
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+ UIImageView *imageView = [[UIImageView alloc] initWithImage:titleImage];
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+ imageView.contentMode = UIViewContentModeScaleAspectFit;
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+ imageView.autoresizingMask = self.titleView.autoresizingMask;
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+
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+ self.viewController.navigationItem.titleView = imageView;
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+}
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+
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+
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+-(void)centerTitleView:(CGRect)navigationBarBounds titleLabel:(UILabel*)titleLabel subtitleLabel:(UILabel*)subtitleLabel
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+{
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+ CGRect titleViewFrame = navigationBarBounds;
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+ titleViewFrame.size.width = MAX(titleLabel.frame.size.width, subtitleLabel.frame.size.width);;
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+ self.titleView.frame = titleViewFrame;
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+
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+ for (UIView *view in self.titleView.subviews) {
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+ CGRect viewFrame = view.frame;
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+ viewFrame.size.width = self.titleView.frame.size.width;
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+ viewFrame.origin.x = (self.titleView.frame.size.width - viewFrame.size.width)/2;
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+ view.frame = viewFrame;
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+ }
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+
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+}
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+
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+
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+-(UILabel*)setupSubtitle:(RNNTitleOptions*)style {
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+ CGRect subtitleFrame = self.titleView.frame;
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+ subtitleFrame.size.height /= 2;
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+ subtitleFrame.origin.y = subtitleFrame.size.height;
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+
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+ UILabel *subtitleLabel = [[UILabel alloc] initWithFrame:subtitleFrame];
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+ subtitleLabel.textAlignment = NSTextAlignmentCenter;
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+ subtitleLabel.backgroundColor = [UIColor clearColor];
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+ subtitleLabel.autoresizingMask = self.titleView.autoresizingMask;
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+
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+ [subtitleLabel setAttributedText:[[NSAttributedString alloc] initWithString:self.subtitle attributes:style.fontAttributes]];
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+
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+
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+ CGSize labelSize = [subtitleLabel.text sizeWithAttributes:style.fontAttributes];
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+ CGRect labelframe = subtitleLabel.frame;
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+ labelframe.size = labelSize;
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+ subtitleLabel.frame = labelframe;
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+ [subtitleLabel sizeToFit];
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+
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+ [self.titleView addSubview:subtitleLabel];
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+
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+ return subtitleLabel;
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+}
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+
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+
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+-(UILabel*)setupTitle:(RNNTitleOptions*)style {
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+ CGRect titleFrame = self.titleView.frame;
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+ if (self.subtitle) {
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+ titleFrame.size.height /= 2;
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+ }
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+ UILabel *titleLabel = [[UILabel alloc] initWithFrame:titleFrame];
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+ titleLabel.textAlignment = NSTextAlignmentCenter;
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+ titleLabel.backgroundColor = [UIColor clearColor];
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+
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+ titleLabel.autoresizingMask = self.titleView.autoresizingMask;
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+
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+ UIFont *titleFont = [UIFont boldSystemFontOfSize:17.f];
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+
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+ id fontSize = style.subtitleFontSize;
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+ if (fontSize) {
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+ CGFloat fontSizeFloat = [RCTConvert CGFloat:fontSize];
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+ titleFont = [UIFont boldSystemFontOfSize:fontSizeFloat];
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+ }
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+
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+ [titleLabel setAttributedText:[[NSAttributedString alloc] initWithString:self.title attributes:style.subtitleFontAttributes]];
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+
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+ CGSize labelSize = [titleLabel.text sizeWithAttributes:@{NSFontAttributeName:titleFont}];
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+ CGRect labelframe = titleLabel.frame;
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+ labelframe.size = labelSize;
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+ titleLabel.frame = labelframe;
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+
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+ if (!self.subtitle) {
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+ titleLabel.center = self.titleView.center;
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+ }
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+
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+ id navBarTextColor = style.subtitleColor;
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+ if (navBarTextColor) {
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+ UIColor *color = navBarTextColor != (id)[NSNull null] ? [RCTConvert UIColor:navBarTextColor] : nil;
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+ titleLabel.textColor = color;
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+ }
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+
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+ [titleLabel sizeToFit];
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+ [self.titleView addSubview:titleLabel];
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+
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+ return titleLabel;
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+}
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+
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+
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+@end
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+
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yogevbd
7 年之前