RNNTabBarItemCreator.m

#import "RNNTabBarItemCreator.h"
#import "RNNFontAttributesCreator.h"
#import "UIImage+tint.h"

@implementation RNNTabBarItemCreator

+ (UITabBarItem *)createTabBarItem:(UITabBarItem *)mergeItem {
    return [UITabBarItem new];
}

+ (UITabBarItem *)createTabBarItem:(RNNBottomTabOptions *)bottomTabOptions
                         mergeItem:(UITabBarItem *)mergeItem {
    UITabBarItem *tabItem = [self createTabBarItem:mergeItem];
    UIImage *icon = [bottomTabOptions.icon getWithDefaultValue:nil];
    UIImage *selectedIcon = [bottomTabOptions.selectedIcon getWithDefaultValue:icon];
    UIColor *iconColor = [bottomTabOptions.iconColor getWithDefaultValue:nil];
    UIColor *selectedIconColor = [bottomTabOptions.selectedIconColor getWithDefaultValue:iconColor];

    tabItem.image = [self getIconImage:icon withTint:iconColor];
    tabItem.selectedImage = [self getSelectedIconImage:selectedIcon
                                     selectedIconColor:selectedIconColor];
    tabItem.title = [bottomTabOptions.text getWithDefaultValue:nil];
    tabItem.tag = bottomTabOptions.tag;
    tabItem.accessibilityIdentifier = [bottomTabOptions.testID getWithDefaultValue:nil];

    NSDictionary *iconInsets = [bottomTabOptions.iconInsets getWithDefaultValue:nil];
    if (iconInsets && ![iconInsets isKindOfClass:[NSNull class]]) {
        id topInset = iconInsets[@"top"];
        id leftInset = iconInsets[@"left"];
        id bottomInset = iconInsets[@"bottom"];
        id rightInset = iconInsets[@"right"];

        CGFloat top = topInset != (id)[NSNull null] ? [RCTConvert CGFloat:topInset] : 0;
        CGFloat left = topInset != (id)[NSNull null] ? [RCTConvert CGFloat:leftInset] : 0;
        CGFloat bottom = topInset != (id)[NSNull null] ? [RCTConvert CGFloat:bottomInset] : 0;
        CGFloat right = topInset != (id)[NSNull null] ? [RCTConvert CGFloat:rightInset] : 0;

        tabItem.imageInsets = UIEdgeInsetsMake(top, left, bottom, right);
    }

    [self appendTitleAttributes:tabItem bottomTabOptions:bottomTabOptions];

    return tabItem;
}

+ (UIImage *)getSelectedIconImage:(UIImage *)selectedIcon
                selectedIconColor:(UIColor *)selectedIconColor {
    if (selectedIcon) {
        if (selectedIconColor) {
            return [[selectedIcon withTintColor:selectedIconColor]
                imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
        } else {
            return [selectedIcon imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
        }
    }

    return nil;
}

+ (UIImage *)getIconImage:(UIImage *)icon withTint:(UIColor *)tintColor {
    if (icon) {
        if (tintColor) {
            return [[icon withTintColor:tintColor]
                imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
        } else {
            return [icon imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
        }
    }

    return nil;
}

+ (void)appendTitleAttributes:(UITabBarItem *)tabItem
             bottomTabOptions:(RNNBottomTabOptions *)bottomTabOptions {
    UIColor *textColor = [bottomTabOptions.textColor getWithDefaultValue:nil];
    UIColor *selectedTextColor = [bottomTabOptions.selectedTextColor getWithDefaultValue:nil];
    NSString *fontFamily = [bottomTabOptions.fontFamily getWithDefaultValue:nil];
    NSNumber *fontSize = [bottomTabOptions.fontSize getWithDefaultValue:nil];
    NSString *fontWeight = [bottomTabOptions.fontWeight getWithDefaultValue:nil];

    NSDictionary *selectedAttributes = [RNNFontAttributesCreator
        createFromDictionary:[tabItem titleTextAttributesForState:UIControlStateSelected]
                  fontFamily:fontFamily
                    fontSize:fontSize
             defaultFontSize:@(10)
                  fontWeight:fontWeight
                       color:selectedTextColor
                defaultColor:[UIColor blackColor]];
    [self setSelectedTitleAttributes:tabItem selectedTitleAttributes:selectedAttributes];

    NSDictionary *normalAttributes = [RNNFontAttributesCreator
        createFromDictionary:[tabItem titleTextAttributesForState:UIControlStateNormal]
                  fontFamily:fontFamily
                    fontSize:fontSize
             defaultFontSize:@(10)
                  fontWeight:fontWeight
                       color:textColor
                defaultColor:[UIColor blackColor]];
    [self setTitleAttributes:tabItem titleAttributes:normalAttributes];
}

+ (void)setTitleAttributes:(UITabBarItem *)tabItem titleAttributes:(NSDictionary *)titleAttributes {
    [tabItem setTitleTextAttributes:titleAttributes forState:UIControlStateNormal];
}

+ (void)setSelectedTitleAttributes:(UITabBarItem *)tabItem
           selectedTitleAttributes:(NSDictionary *)selectedTitleAttributes {
    [tabItem setTitleTextAttributes:selectedTitleAttributes forState:UIControlStateSelected];
}

@end