react-native-navigation/lib/ios/RCTHelpers.m

#import "RCTHelpers.h"
#import <React/RCTView.h>
#import <React/RCTScrollView.h>
#import <React/RCTFont.h>

@implementation RCTHelpers

+ (NSMutableDictionary *)textAttributesFromDictionary:(NSDictionary *)dictionary withPrefix:(NSString *)prefix baseFont:(UIFont *)baseFont
{
	NSMutableDictionary *textAttributes = [NSMutableDictionary new];
	
	NSString *colorKey = @"color";
	NSString *familyKey = @"fontFamily";
	NSString *weightKey = @"fontWeight";
	NSString *sizeKey = @"fontSize";
	NSString *styleKey = @"fontStyle";
	NSString *shadowColourKey = @"shadowColor";
	NSString *shadowOffsetKey = @"shadowOffset";
	NSString *shadowBlurRadiusKey = @"shadowBlurRadius";
	NSString *showShadowKey = @"showShadow";
	
	if (prefix) {
		
		colorKey = [colorKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[colorKey substringToIndex:1].capitalizedString];
		colorKey = [NSString stringWithFormat:@"%@%@", prefix, colorKey];
		
		familyKey = [familyKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[familyKey substringToIndex:1].capitalizedString];
		familyKey = [NSString stringWithFormat:@"%@%@", prefix, familyKey];
		
		weightKey = [weightKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[weightKey substringToIndex:1].capitalizedString];
		weightKey = [NSString stringWithFormat:@"%@%@", prefix, weightKey];
		
		sizeKey = [sizeKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[sizeKey substringToIndex:1].capitalizedString];
		sizeKey = [NSString stringWithFormat:@"%@%@", prefix, sizeKey];
		
		styleKey = [styleKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[styleKey substringToIndex:1].capitalizedString];
		styleKey = [NSString stringWithFormat:@"%@%@", prefix, styleKey];
		
		shadowColourKey = [shadowColourKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[shadowColourKey substringToIndex:1].capitalizedString];
		shadowColourKey = [NSString stringWithFormat:@"%@%@", prefix, shadowColourKey];
		
		shadowOffsetKey = [shadowOffsetKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[shadowOffsetKey substringToIndex:1].capitalizedString];
		shadowOffsetKey = [NSString stringWithFormat:@"%@%@", prefix, shadowOffsetKey];
		
		shadowBlurRadiusKey = [shadowBlurRadiusKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[shadowBlurRadiusKey substringToIndex:1].capitalizedString];
		shadowBlurRadiusKey = [NSString stringWithFormat:@"%@%@", prefix, shadowBlurRadiusKey];
		
		showShadowKey = [showShadowKey stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:[showShadowKey substringToIndex:1].capitalizedString];
		showShadowKey = [NSString stringWithFormat:@"%@%@", prefix, showShadowKey];
	}
	
	NSShadow *shadow;
	
	NSNumber *shadowColor = dictionary[shadowColourKey];
	if (shadowColor && [shadowColor isKindOfClass:[NSNumber class]]) {
		if (!shadow) {
			shadow = [NSShadow new];
		}
		shadow.shadowColor = [RCTConvert UIColor:shadowColor];
	}
	
	NSDictionary *shadowOffsetDict = dictionary[shadowOffsetKey];
	if (shadowOffsetDict && [shadowOffsetDict isKindOfClass:[NSDictionary class]]) {
		CGSize shadowOffset = [RCTConvert CGSize:shadowOffsetDict];
		if (!shadow) {
			shadow = [NSShadow new];
		}
		shadow.shadowOffset = shadowOffset;
	}
	
	NSNumber *shadowRadius = dictionary[shadowBlurRadiusKey];
	if (shadowRadius) {
		CGFloat radius = [RCTConvert CGFloat:shadowRadius];
		if (!shadow) {
			shadow = [NSShadow new];
		}
		shadow.shadowBlurRadius = radius;
	}
	
	NSNumber *showShadow = dictionary[showShadowKey];
	if (showShadow) {
		BOOL show = [RCTConvert BOOL:showShadow];
		if (!show) {
			shadow = nil;
		}
	}
	
	if (shadow) {
		[textAttributes setObject:shadow forKey:NSShadowAttributeName];
	}
	
	NSNumber *textColor = dictionary[colorKey];
	if (textColor && [textColor isKindOfClass:[NSNumber class]])
	{
		UIColor *color = [RCTConvert UIColor:textColor];
		[textAttributes setObject:color forKey:NSForegroundColorAttributeName];
	}
	
	NSString *fontFamily = dictionary[familyKey];
	if (![fontFamily isKindOfClass:[NSString class]]) {
		fontFamily = nil;
	}
	
	NSString *fontWeight = dictionary[weightKey];
	if (![fontWeight isKindOfClass:[NSString class]]) {
		fontWeight = nil;
	}
	
	NSNumber *fontSize = dictionary[sizeKey];
	if (![fontSize isKindOfClass:[NSNumber class]]) {
		fontSize = nil;
	}
	
	NSString *fontStyle = dictionary[styleKey];
	if (![fontStyle isKindOfClass:[NSString class]]) {
		fontStyle = nil;
	}
	
	UIFont *font = [RCTFont updateFont:baseFont withFamily:fontFamily size:fontSize weight:fontWeight style:fontStyle variant:nil scaleMultiplier:1];
	
	if (font && (fontStyle || fontWeight || fontSize || fontFamily)) {
		[textAttributes setObject:font forKey:NSFontAttributeName];
	}
	
	return textAttributes;
}

+ (NSMutableDictionary *)textAttributesFromDictionary:(NSDictionary *)dictionary withPrefix:(NSString *)prefix
{
	return [self textAttributesFromDictionary:dictionary withPrefix:prefix baseFont:[UIFont systemFontOfSize:[UIFont systemFontSize]]];
}

+ (NSString *)getTimestampString {
	long long milliseconds = (long long)([[NSDate date] timeIntervalSince1970] * 1000.0);
	return [NSString stringWithFormat:@"%lld", milliseconds];
}

@end