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react-native/React/Base/RCTConvert.m

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTConvert.h"
#import <objc/message.h>
@implementation RCTConvert
RCT_CONVERTER(BOOL, BOOL, boolValue)
RCT_NUMBER_CONVERTER(double, doubleValue)
RCT_NUMBER_CONVERTER(float, floatValue)
RCT_NUMBER_CONVERTER(int, intValue)
RCT_NUMBER_CONVERTER(int64_t, longLongValue);
RCT_NUMBER_CONVERTER(uint64_t, unsignedLongLongValue);
RCT_NUMBER_CONVERTER(NSInteger, integerValue)
RCT_NUMBER_CONVERTER(NSUInteger, unsignedIntegerValue)
RCT_CUSTOM_CONVERTER(NSArray *, NSArray, [NSArray arrayWithArray:json])
RCT_CUSTOM_CONVERTER(NSDictionary *, NSDictionary, [NSDictionary dictionaryWithDictionary:json])
RCT_CONVERTER(NSString *, NSString, description)
+ (NSNumber *)NSNumber:(id)json
{
if ([json isKindOfClass:[NSNumber class]]) {
return json;
} else if ([json isKindOfClass:[NSString class]]) {
static NSNumberFormatter *formatter;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
formatter = [[NSNumberFormatter alloc] init];
formatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"];
});
NSNumber *number = [formatter numberFromString:json];
if (!number) {
RCTLogError(@"JSON String '%@' could not be interpreted as a number", json);
}
return number;
} else if (json && json != [NSNull null]) {
RCTLogError(@"JSON value '%@' of class %@ could not be interpreted as a number", json, [json classForCoder]);
}
return nil;
}
+ (NSData *)NSData:(id)json
{
// TODO: should we automatically decode base64 data? Probably not...
return [[self NSString:json] dataUsingEncoding:NSUTF8StringEncoding];
}
+ (NSURL *)NSURL:(id)json
{
if (![json isKindOfClass:[NSString class]]) {
RCTLogError(@"Expected NSString for NSURL, received %@: %@", [json classForCoder], json);
return nil;
}
NSString *path = json;
if ([path isAbsolutePath])
{
return [NSURL fileURLWithPath:path];
}
else if ([path length])
{
NSURL *URL = [NSURL URLWithString:path relativeToURL:[[NSBundle mainBundle] resourceURL]];
if ([URL isFileURL] && ![[NSFileManager defaultManager] fileExistsAtPath:[URL path]]) {
RCTLogWarn(@"The file '%@' does not exist", URL);
return nil;
}
return URL;
}
return nil;
}
+ (NSURLRequest *)NSURLRequest:(id)json
{
return [NSURLRequest requestWithURL:[self NSURL:json]];
}
+ (NSDate *)NSDate:(id)json
{
if ([json isKindOfClass:[NSNumber class]]) {
return [NSDate dateWithTimeIntervalSince1970:[self NSTimeInterval:json]];
} else if ([json isKindOfClass:[NSString class]]) {
static NSDateFormatter *formatter;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = @"yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ";
formatter.locale = [NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"];
formatter.timeZone = [NSTimeZone timeZoneWithName:@"UTC"];
});
NSDate *date = [formatter dateFromString:json];
if (!date) {
RCTLogError(@"JSON String '%@' could not be interpreted as a date. Expected format: YYYY-MM-DD'T'HH:mm:ss.sssZ", json);
}
return date;
} else if (json && json != [NSNull null]) {
RCTLogError(@"JSON value '%@' of class %@ could not be interpreted as a date", json, [json classForCoder]);
}
return nil;
}
// JS Standard for time is milliseconds
RCT_CUSTOM_CONVERTER(NSTimeInterval, NSTimeInterval, [self double:json] / 1000.0)
// JS standard for time zones is minutes.
RCT_CUSTOM_CONVERTER(NSTimeZone *, NSTimeZone, [NSTimeZone timeZoneForSecondsFromGMT:[self double:json] * 60.0])
NSNumber *RCTConverterEnumValue(const char *typeName, NSDictionary *mapping, NSNumber *defaultValue, id json)
{
if (!json || json == (id)kCFNull) {
return defaultValue;
}
if ([json isKindOfClass:[NSNumber class]]) {
NSArray *allValues = [mapping allValues];
if ([[mapping allValues] containsObject:json] || [json isEqual:defaultValue]) {
return json;
}
RCTLogError(@"Invalid %s '%@'. should be one of: %@", typeName, json, allValues);
return defaultValue;
}
if (![json isKindOfClass:[NSString class]]) {
RCTLogError(@"Expected NSNumber or NSString for %s, received %@: %@",
typeName, [json classForCoder], json);
}
id value = mapping[json];
if (!value && [json description].length > 0) {
RCTLogError(@"Invalid %s '%@'. should be one of: %@", typeName, json, [mapping allKeys]);
}
return value ?: defaultValue;
}
RCT_ENUM_CONVERTER(NSTextAlignment, (@{
@"auto": @(NSTextAlignmentNatural),
@"left": @(NSTextAlignmentLeft),
@"center": @(NSTextAlignmentCenter),
@"right": @(NSTextAlignmentRight),
@"justify": @(NSTextAlignmentJustified),
}), NSTextAlignmentNatural, integerValue)
RCT_ENUM_CONVERTER(NSWritingDirection, (@{
@"auto": @(NSWritingDirectionNatural),
@"ltr": @(NSWritingDirectionLeftToRight),
@"rtl": @(NSWritingDirectionRightToLeft),
}), NSWritingDirectionNatural, integerValue)
RCT_ENUM_CONVERTER(UITextAutocapitalizationType, (@{
@"none": @(UITextAutocapitalizationTypeNone),
@"words": @(UITextAutocapitalizationTypeWords),
@"sentences": @(UITextAutocapitalizationTypeSentences),
@"characters": @(UITextAutocapitalizationTypeAllCharacters)
}), UITextAutocapitalizationTypeSentences, integerValue)
RCT_ENUM_CONVERTER(UITextFieldViewMode, (@{
@"never": @(UITextFieldViewModeNever),
@"while-editing": @(UITextFieldViewModeWhileEditing),
@"unless-editing": @(UITextFieldViewModeUnlessEditing),
@"always": @(UITextFieldViewModeAlways),
}), UITextFieldViewModeNever, integerValue)
RCT_ENUM_CONVERTER(UIScrollViewKeyboardDismissMode, (@{
@"none": @(UIScrollViewKeyboardDismissModeNone),
@"on-drag": @(UIScrollViewKeyboardDismissModeOnDrag),
@"interactive": @(UIScrollViewKeyboardDismissModeInteractive),
}), UIScrollViewKeyboardDismissModeNone, integerValue)
RCT_ENUM_CONVERTER(UIKeyboardType, (@{
@"default": @(UIKeyboardTypeDefault),
@"ascii-capable": @(UIKeyboardTypeASCIICapable),
@"numbers-and-punctuation": @(UIKeyboardTypeNumbersAndPunctuation),
@"url": @(UIKeyboardTypeURL),
@"number-pad": @(UIKeyboardTypeNumberPad),
@"phone-pad": @(UIKeyboardTypePhonePad),
@"name-phone-pad": @(UIKeyboardTypeNamePhonePad),
@"email-address": @(UIKeyboardTypeEmailAddress),
@"decimal-pad": @(UIKeyboardTypeDecimalPad),
@"twitter": @(UIKeyboardTypeTwitter),
@"web-search": @(UIKeyboardTypeWebSearch),
}), UIKeyboardTypeDefault, integerValue)
RCT_ENUM_CONVERTER(UIReturnKeyType, (@{
@"default": @(UIReturnKeyDefault),
@"go": @(UIReturnKeyGo),
@"google": @(UIReturnKeyGoogle),
@"join": @(UIReturnKeyJoin),
@"next": @(UIReturnKeyNext),
@"route": @(UIReturnKeyRoute),
@"search": @(UIReturnKeySearch),
@"send": @(UIReturnKeySend),
@"yahoo": @(UIReturnKeyYahoo),
@"done": @(UIReturnKeyDone),
@"emergency-call": @(UIReturnKeyEmergencyCall),
}), UIReturnKeyDefault, integerValue)
RCT_ENUM_CONVERTER(UIViewContentMode, (@{
@"scale-to-fill": @(UIViewContentModeScaleToFill),
@"scale-aspect-fit": @(UIViewContentModeScaleAspectFit),
@"scale-aspect-fill": @(UIViewContentModeScaleAspectFill),
@"redraw": @(UIViewContentModeRedraw),
@"center": @(UIViewContentModeCenter),
@"top": @(UIViewContentModeTop),
@"bottom": @(UIViewContentModeBottom),
@"left": @(UIViewContentModeLeft),
@"right": @(UIViewContentModeRight),
@"top-left": @(UIViewContentModeTopLeft),
@"top-right": @(UIViewContentModeTopRight),
@"bottom-left": @(UIViewContentModeBottomLeft),
@"bottom-right": @(UIViewContentModeBottomRight),
}), UIViewContentModeScaleToFill, integerValue)
RCT_ENUM_CONVERTER(UIBarStyle, (@{
@"default": @(UIBarStyleDefault),
@"black": @(UIBarStyleBlack),
}), UIBarStyleDefault, integerValue)
// TODO: normalise the use of w/width so we can do away with the alias values (#6566645)
/**
* This macro is used for creating converter functions for structs that consist
* of a number of CGFloat properties, such as CGPoint, CGRect, etc.
*/
#define RCT_CGSTRUCT_CONVERTER(type, values, _aliases) \
+ (type)type:(id)json \
{ \
@try { \
static NSArray *fields; \
static NSUInteger count; \
static dispatch_once_t onceToken; \
dispatch_once(&onceToken, ^{ \
fields = values; \
count = [fields count]; \
}); \
type result; \
if ([json isKindOfClass:[NSArray class]]) { \
if ([json count] != count) { \
RCTLogError(@"Expected array with count %zd, but count is %zd: %@", count, [json count], json); \
} else { \
for (NSUInteger i = 0; i < count; i++) { \
((CGFloat *)&result)[i] = [self CGFloat:json[i]]; \
} \
} \
} else if ([json isKindOfClass:[NSDictionary class]]) { \
NSDictionary *aliases = _aliases; \
if (aliases.count) { \
json = [json mutableCopy]; \
for (NSString *alias in aliases) { \
NSString *key = aliases[alias]; \
NSNumber *number = json[alias]; \
if (number) { \
RCTLogWarn(@"Using deprecated '%@' property for '%s'. Use '%@' instead.", alias, #type, key); \
((NSMutableDictionary *)json)[key] = number; \
} \
} \
} \
for (NSUInteger i = 0; i < count; i++) { \
((CGFloat *)&result)[i] = [self CGFloat:json[fields[i]]]; \
} \
} else if (json && json != [NSNull null]) { \
RCTLogError(@"Expected NSArray or NSDictionary for %s, received %@: %@", \
#type, [json classForCoder], json); \
} \
return result; \
} \
@catch (__unused NSException *e) { \
RCTLogError(@"JSON value '%@' cannot be converted to '%s'", json, #type); \
type result; \
return result; \
} \
}
RCT_CUSTOM_CONVERTER(CGFloat, CGFloat, [self double:json])
RCT_CGSTRUCT_CONVERTER(CGPoint, (@[@"x", @"y"]), (@{@"l": @"x", @"t": @"y"}))
RCT_CGSTRUCT_CONVERTER(CGSize, (@[@"width", @"height"]), (@{@"w": @"width", @"h": @"height"}))
RCT_CGSTRUCT_CONVERTER(CGRect, (@[@"x", @"y", @"width", @"height"]), (@{@"l": @"x", @"t": @"y", @"w": @"width", @"h": @"height"}))
RCT_CGSTRUCT_CONVERTER(UIEdgeInsets, (@[@"top", @"left", @"bottom", @"right"]), nil)
RCT_ENUM_CONVERTER(CGLineJoin, (@{
@"miter": @(kCGLineJoinMiter),
@"round": @(kCGLineJoinRound),
@"bevel": @(kCGLineJoinBevel),
}), kCGLineJoinMiter, intValue)
RCT_ENUM_CONVERTER(CGLineCap, (@{
@"butt": @(kCGLineCapButt),
@"round": @(kCGLineCapRound),
@"square": @(kCGLineCapSquare),
}), kCGLineCapButt, intValue)
RCT_CGSTRUCT_CONVERTER(CATransform3D, (@[
@"m11", @"m12", @"m13", @"m14",
@"m21", @"m22", @"m23", @"m24",
@"m31", @"m32", @"m33", @"m34",
@"m41", @"m42", @"m43", @"m44"
]), nil)
RCT_CGSTRUCT_CONVERTER(CGAffineTransform, (@[
@"a", @"b", @"c", @"d", @"tx", @"ty"
]), nil)
+ (UIColor *)UIColor:(id)json
{
// Check color cache
static NSMutableDictionary *colorCache = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
colorCache = [[NSMutableDictionary alloc] init];
});
UIColor *color = colorCache[json];
if (color) {
return color;
}
if ([json isKindOfClass:[NSString class]]) {
// Check named colors
static NSDictionary *namedColors = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
namedColors = @{
// CSS colors
@"aliceblue": @"#f0f8ff",
@"antiquewhite": @"#faebd7",
@"aqua": @"#00ffff",
@"aquamarine": @"#7fffd4",
@"azure": @"#f0ffff",
@"beige": @"#f5f5dc",
@"bisque": @"#ffe4c4",
@"black": @"#000000",
@"blanchedalmond": @"#ffebcd",
@"blue": @"#0000ff",
@"blueviolet": @"#8a2be2",
@"brown": @"#a52a2a",
@"burlywood": @"#deb887",
@"cadetblue": @"#5f9ea0",
@"chartreuse": @"#7fff00",
@"chocolate": @"#d2691e",
@"coral": @"#ff7f50",
@"cornflowerblue": @"#6495ed",
@"cornsilk": @"#fff8dc",
@"crimson": @"#dc143c",
@"cyan": @"#00ffff",
@"darkblue": @"#00008b",
@"darkcyan": @"#008b8b",
@"darkgoldenrod": @"#b8860b",
@"darkgray": @"#a9a9a9",
@"darkgrey": @"#a9a9a9",
@"darkgreen": @"#006400",
@"darkkhaki": @"#bdb76b",
@"darkmagenta": @"#8b008b",
@"darkolivegreen": @"#556b2f",
@"darkorange": @"#ff8c00",
@"darkorchid": @"#9932cc",
@"darkred": @"#8b0000",
@"darksalmon": @"#e9967a",
@"darkseagreen": @"#8fbc8f",
@"darkslateblue": @"#483d8b",
@"darkslategray": @"#2f4f4f",
@"darkslategrey": @"#2f4f4f",
@"darkturquoise": @"#00ced1",
@"darkviolet": @"#9400d3",
@"deeppink": @"#ff1493",
@"deepskyblue": @"#00bfff",
@"dimgray": @"#696969",
@"dimgrey": @"#696969",
@"dodgerblue": @"#1e90ff",
@"firebrick": @"#b22222",
@"floralwhite": @"#fffaf0",
@"forestgreen": @"#228b22",
@"fuchsia": @"#ff00ff",
@"gainsboro": @"#dcdcdc",
@"ghostwhite": @"#f8f8ff",
@"gold": @"#ffd700",
@"goldenrod": @"#daa520",
@"gray": @"#808080",
@"grey": @"#808080",
@"green": @"#008000",
@"greenyellow": @"#adff2f",
@"honeydew": @"#f0fff0",
@"hotpink": @"#ff69b4",
@"indianred": @"#cd5c5c",
@"indigo": @"#4b0082",
@"ivory": @"#fffff0",
@"khaki": @"#f0e68c",
@"lavender": @"#e6e6fa",
@"lavenderblush": @"#fff0f5",
@"lawngreen": @"#7cfc00",
@"lemonchiffon": @"#fffacd",
@"lightblue": @"#add8e6",
@"lightcoral": @"#f08080",
@"lightcyan": @"#e0ffff",
@"lightgoldenrodyellow": @"#fafad2",
@"lightgray": @"#d3d3d3",
@"lightgrey": @"#d3d3d3",
@"lightgreen": @"#90ee90",
@"lightpink": @"#ffb6c1",
@"lightsalmon": @"#ffa07a",
@"lightseagreen": @"#20b2aa",
@"lightskyblue": @"#87cefa",
@"lightslategray": @"#778899",
@"lightslategrey": @"#778899",
@"lightsteelblue": @"#b0c4de",
@"lightyellow": @"#ffffe0",
@"lime": @"#00ff00",
@"limegreen": @"#32cd32",
@"linen": @"#faf0e6",
@"magenta": @"#ff00ff",
@"maroon": @"#800000",
@"mediumaquamarine": @"#66cdaa",
@"mediumblue": @"#0000cd",
@"mediumorchid": @"#ba55d3",
@"mediumpurple": @"#9370db",
@"mediumseagreen": @"#3cb371",
@"mediumslateblue": @"#7b68ee",
@"mediumspringgreen": @"#00fa9a",
@"mediumturquoise": @"#48d1cc",
@"mediumvioletred": @"#c71585",
@"midnightblue": @"#191970",
@"mintcream": @"#f5fffa",
@"mistyrose": @"#ffe4e1",
@"moccasin": @"#ffe4b5",
@"navajowhite": @"#ffdead",
@"navy": @"#000080",
@"oldlace": @"#fdf5e6",
@"olive": @"#808000",
@"olivedrab": @"#6b8e23",
@"orange": @"#ffa500",
@"orangered": @"#ff4500",
@"orchid": @"#da70d6",
@"palegoldenrod": @"#eee8aa",
@"palegreen": @"#98fb98",
@"paleturquoise": @"#afeeee",
@"palevioletred": @"#db7093",
@"papayawhip": @"#ffefd5",
@"peachpuff": @"#ffdab9",
@"peru": @"#cd853f",
@"pink": @"#ffc0cb",
@"plum": @"#dda0dd",
@"powderblue": @"#b0e0e6",
@"purple": @"#800080",
@"rebeccapurple": @"#663399",
@"red": @"#ff0000",
@"rosybrown": @"#bc8f8f",
@"royalblue": @"#4169e1",
@"saddlebrown": @"#8b4513",
@"salmon": @"#fa8072",
@"sandybrown": @"#f4a460",
@"seagreen": @"#2e8b57",
@"seashell": @"#fff5ee",
@"sienna": @"#a0522d",
@"silver": @"#c0c0c0",
@"skyblue": @"#87ceeb",
@"slateblue": @"#6a5acd",
@"slategray": @"#708090",
@"slategrey": @"#708090",
@"snow": @"#fffafa",
@"springgreen": @"#00ff7f",
@"steelblue": @"#4682b4",
@"tan": @"#d2b48c",
@"teal": @"#008080",
@"thistle": @"#d8bfd8",
@"tomato": @"#ff6347",
@"turquoise": @"#40e0d0",
@"violet": @"#ee82ee",
@"wheat": @"#f5deb3",
@"white": @"#ffffff",
@"whitesmoke": @"#f5f5f5",
@"yellow": @"#ffff00",
@"yellowgreen": @"#9acd32",
// Nonstandard color extensions
@"transparent": @"rgba(0,0,0,0)",
};
});
NSString *colorString = namedColors[json];
if (!colorString) {
colorString = json;
}
// Parse color
NSUInteger red = -1;
NSUInteger green = -1;
NSUInteger blue = -1;
CGFloat alpha = 1.0;
if ([colorString hasPrefix:@"#"]) {
if (colorString.length == 4) { // 3 digit hex
sscanf([colorString UTF8String], "#%01tX%01tX%01tX", &red, &green, &blue);
// expand to 6 digit hex
red = red | (red << 4);
green = green | (green << 4);
blue = blue | (blue << 4);
} else if (colorString.length == 7) { // normal 6 digit hex
sscanf([colorString UTF8String], "#%02tX%02tX%02tX", &red, &green, &blue);
} else {
RCTLogError(@"Invalid hex color %@. Hex colors should be 3 or 6 digits long", colorString);
}
} else if ([colorString hasPrefix:@"rgba("]) {
double tmpAlpha;
sscanf([colorString UTF8String], "rgba(%zd,%zd,%zd,%lf)", &red, &green, &blue, &tmpAlpha);
alpha = tmpAlpha > 0.99 ? 1.0 : tmpAlpha;
} else if ([colorString hasPrefix:@"rgb("]) {
sscanf([colorString UTF8String], "rgb(%zd,%zd,%zd)", &red, &green, &blue);
} else {
RCTLogError(@"Unrecognized color format '%@', must be one of #hex|rgba|rgb", colorString);
}
if (red == -1 || green == -1 || blue == -1 || alpha > 1.0 || alpha < 0.0) {
RCTLogError(@"Invalid color string '%@'", colorString);
} else {
color = [UIColor colorWithRed:red / 255.0 green:green / 255.0 blue:blue / 255.0 alpha:alpha];
}
} else if ([json isKindOfClass:[NSArray class]]) {
if ([json count] < 3 || [json count] > 4) {
RCTLogError(@"Expected array with count 3 or 4, but count is %zd: %@", [json count], json);
} else {
// Color array
color = [UIColor colorWithRed:[self double:json[0]]
green:[self double:json[1]]
blue:[self double:json[2]]
alpha:[json count] > 3 ? [self double:json[3]] : 1];
}
} else if ([json isKindOfClass:[NSDictionary class]]) {
// Color dictionary
color = [UIColor colorWithRed:[self double:json[@"r"]]
green:[self double:json[@"g"]]
blue:[self double:json[@"b"]]
alpha:[self double:json[@"a"] ?: @1]];
} else if (json && ![json isKindOfClass:[NSNull class]]) {
RCTLogError(@"Expected NSArray, NSDictionary or NSString for UIColor, received %@: %@",
[json classForCoder], json);
}
// Default color
if (!color) {
color = [UIColor whiteColor];
}
// Cache and return
if (json) {
colorCache[json] = color;
}
return color;
}
+ (CGColorRef)CGColor:(id)json
{
return [self UIColor:json].CGColor;
}
+ (UIImage *)UIImage:(id)json
{
// TODO: we might as well cache the result of these checks (and possibly the
// image itself) so as to reduce overhead on subsequent checks of the same input
if (![json isKindOfClass:[NSString class]]) {
RCTLogError(@"Expected NSString for UIImage, received %@: %@", [json classForCoder], json);
return nil;
}
if ([json length] == 0) {
return nil;
}
UIImage *image = nil;
NSString *path = json;
if ([path hasPrefix:@"data:"]) {
NSURL *url = [NSURL URLWithString:path];
NSData *imageData = [NSData dataWithContentsOfURL:url];
image = [UIImage imageWithData:imageData];
} else if ([path isAbsolutePath]) {
image = [UIImage imageWithContentsOfFile:path];
} else {
image = [UIImage imageNamed:path];
if (!image) {
image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:path ofType:nil]];
}
}
// NOTE: we don't warn about nil images because there are legitimate
// case where we find out if a string is an image by using this method
return image;
}
+ (CGImageRef)CGImage:(id)json
{
return [self UIImage:json].CGImage;
}
#if !defined(__IPHONE_8_2) || __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_8_2
// These constants are defined in iPhone SDK 8.2, but the app cannot run on
// iOS < 8.2 unless we redefine them here. If you target iOS 8.2 or above
// as a base target, the standard constants will be used instead.
#define UIFontWeightUltraLight -0.8
#define UIFontWeightThin -0.6
#define UIFontWeightLight -0.4
#define UIFontWeightRegular 0
#define UIFontWeightMedium 0.23
#define UIFontWeightSemibold 0.3
#define UIFontWeightBold 0.4
#define UIFontWeightHeavy 0.56
#define UIFontWeightBlack 0.62
#endif
typedef CGFloat RCTFontWeight;
RCT_ENUM_CONVERTER(RCTFontWeight, (@{
@"normal": @(UIFontWeightRegular),
@"bold": @(UIFontWeightBold),
@"100": @(UIFontWeightUltraLight),
@"200": @(UIFontWeightThin),
@"300": @(UIFontWeightLight),
@"400": @(UIFontWeightRegular),
@"500": @(UIFontWeightMedium),
@"600": @(UIFontWeightSemibold),
@"700": @(UIFontWeightBold),
@"800": @(UIFontWeightHeavy),
@"900": @(UIFontWeightBlack),
}), UIFontWeightRegular, doubleValue)
typedef BOOL RCTFontStyle;
RCT_ENUM_CONVERTER(RCTFontStyle, (@{
@"normal": @NO,
@"italic": @YES,
@"oblique": @YES,
}), NO, boolValue)
static RCTFontWeight RCTWeightOfFont(UIFont *font)
{
NSDictionary *traits = [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
return [traits[UIFontWeightTrait] doubleValue];
}
static BOOL RCTFontIsItalic(UIFont *font)
{
NSDictionary *traits = [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
UIFontDescriptorSymbolicTraits symbolicTraits = [traits[UIFontSymbolicTrait] unsignedIntValue];
return (symbolicTraits & UIFontDescriptorTraitItalic) != 0;
}
static BOOL RCTFontIsCondensed(UIFont *font)
{
NSDictionary *traits = [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
UIFontDescriptorSymbolicTraits symbolicTraits = [traits[UIFontSymbolicTrait] unsignedIntValue];
return (symbolicTraits & UIFontDescriptorTraitCondensed) != 0;
}
+ (UIFont *)UIFont:(UIFont *)font withSize:(id)json
{
return [self UIFont:font withFamily:nil size:json weight:nil style:nil];
}
+ (UIFont *)UIFont:(UIFont *)font withWeight:(id)json
{
return [self UIFont:font withFamily:nil size:nil weight:json style:nil];
}
+ (UIFont *)UIFont:(UIFont *)font withStyle:(id)json
{
return [self UIFont:font withFamily:nil size:nil weight:nil style:json];
}
+ (UIFont *)UIFont:(UIFont *)font withFamily:(id)json
{
return [self UIFont:font withFamily:json size:nil weight:nil style:nil];
}
+ (UIFont *)UIFont:(UIFont *)font withFamily:(id)family
size:(id)size weight:(id)weight style:(id)style
{
// Defaults
NSString *const RCTDefaultFontFamily = @"Helvetica Neue";
const RCTFontWeight RCTDefaultFontWeight = UIFontWeightRegular;
const CGFloat RCTDefaultFontSize = 14;
// Get existing properties
BOOL isItalic = NO;
BOOL isCondensed = NO;
RCTFontWeight fontWeight = RCTDefaultFontWeight;
if (font) {
family = font.familyName;
fontWeight = RCTWeightOfFont(font);
isItalic = RCTFontIsItalic(font);
isCondensed = RCTFontIsCondensed(font);
}
// Get font style
if (style) {
isItalic = [self RCTFontStyle:style];
}
// Get font size
CGFloat fontSize = [self CGFloat:size] ?: RCTDefaultFontSize;
// Get font family
NSString *familyName = [self NSString:family] ?: RCTDefaultFontFamily;
if ([UIFont fontNamesForFamilyName:familyName].count == 0) {
font = [UIFont fontWithName:familyName size:fontSize];
if (font) {
// It's actually a font name, not a font family name,
// but we'll do what was meant, not what was said.
familyName = font.familyName;
NSDictionary *traits = [font.fontDescriptor objectForKey:UIFontDescriptorTraitsAttribute];
fontWeight = [traits[UIFontWeightTrait] doubleValue];
} else {
// Not a valid font or family
RCTLogError(@"Unrecognized font family '%@'", familyName);
familyName = RCTDefaultFontFamily;
}
}
// Get font weight
if (weight) {
fontWeight = [self RCTFontWeight:weight];
}
// Get closest match
UIFont *bestMatch = font;
CGFloat closestWeight = font ? RCTWeightOfFont(font) : INFINITY;
for (NSString *name in [UIFont fontNamesForFamilyName:familyName]) {
UIFont *match = [UIFont fontWithName:name size:fontSize];
if (isItalic == RCTFontIsItalic(match) &&
isCondensed == RCTFontIsCondensed(match)) {
CGFloat testWeight = RCTWeightOfFont(match);
if (ABS(testWeight - fontWeight) < ABS(closestWeight - fontWeight)) {
bestMatch = match;
closestWeight = testWeight;
}
}
}
// Safety net
if (!bestMatch) {
RCTLogError(@"Could not find font with family: '%@', size: %@, \
weight: %@, style: %@", family, size, weight, style);
bestMatch = [UIFont fontWithName:[[UIFont fontNamesForFamilyName:familyName] firstObject]
size:fontSize];
}
return bestMatch;
}
RCT_ARRAY_CONVERTER(NSString)
RCT_ARRAY_CONVERTER(NSDictionary)
RCT_ARRAY_CONVERTER(NSURL)
RCT_ARRAY_CONVERTER(NSNumber)
RCT_ARRAY_CONVERTER(UIColor)
// Can't use RCT_ARRAY_CONVERTER due to bridged cast
+ (NSArray *)CGColorArray:(id)json
{
NSMutableArray *colors = [[NSMutableArray alloc] init];
for (id value in [self NSArray:json]) {
[colors addObject:(__bridge id)[self CGColor:value]];
}
return colors;
}
RCT_ENUM_CONVERTER(css_overflow, (@{
@"hidden": @NO,
@"visible": @YES
}), YES, boolValue)
RCT_ENUM_CONVERTER(css_flex_direction_t, (@{
@"row": @(CSS_FLEX_DIRECTION_ROW),
@"column": @(CSS_FLEX_DIRECTION_COLUMN)
}), CSS_FLEX_DIRECTION_COLUMN, intValue)
RCT_ENUM_CONVERTER(css_justify_t, (@{
@"flex-start": @(CSS_JUSTIFY_FLEX_START),
@"flex-end": @(CSS_JUSTIFY_FLEX_END),
@"center": @(CSS_JUSTIFY_CENTER),
@"space-between": @(CSS_JUSTIFY_SPACE_BETWEEN),
@"space-around": @(CSS_JUSTIFY_SPACE_AROUND)
}), CSS_JUSTIFY_FLEX_START, intValue)
RCT_ENUM_CONVERTER(css_align_t, (@{
@"flex-start": @(CSS_ALIGN_FLEX_START),
@"flex-end": @(CSS_ALIGN_FLEX_END),
@"center": @(CSS_ALIGN_CENTER),
@"auto": @(CSS_ALIGN_AUTO),
@"stretch": @(CSS_ALIGN_STRETCH)
}), CSS_ALIGN_FLEX_START, intValue)
RCT_ENUM_CONVERTER(css_position_type_t, (@{
@"absolute": @(CSS_POSITION_ABSOLUTE),
@"relative": @(CSS_POSITION_RELATIVE)
}), CSS_POSITION_RELATIVE, intValue)
RCT_ENUM_CONVERTER(css_wrap_type_t, (@{
@"wrap": @(CSS_WRAP),
@"nowrap": @(CSS_NOWRAP)
}), CSS_NOWRAP, intValue)
RCT_ENUM_CONVERTER(RCTPointerEvents, (@{
@"none": @(RCTPointerEventsNone),
@"box-only": @(RCTPointerEventsBoxOnly),
@"box-none": @(RCTPointerEventsBoxNone),
@"auto": @(RCTPointerEventsUnspecified)
}), RCTPointerEventsUnspecified, integerValue)
RCT_ENUM_CONVERTER(RCTAnimationType, (@{
@"spring": @(RCTAnimationTypeSpring),
@"linear": @(RCTAnimationTypeLinear),
@"easeIn": @(RCTAnimationTypeEaseIn),
@"easeOut": @(RCTAnimationTypeEaseOut),
@"easeInEaseOut": @(RCTAnimationTypeEaseInEaseOut),
}), RCTAnimationTypeEaseInEaseOut, integerValue)
@end
BOOL RCTSetProperty(id target, NSString *keyPath, SEL type, id json)
{
// Split keypath
NSArray *parts = [keyPath componentsSeparatedByString:@"."];
NSString *key = [parts lastObject];
for (NSUInteger i = 0; i < parts.count - 1; i++) {
target = [target valueForKey:parts[i]];
if (!target) {
return NO;
}
}
// Get property setter
SEL setter = NSSelectorFromString([NSString stringWithFormat:@"set%@%@:",
[[key substringToIndex:1] uppercaseString],
[key substringFromIndex:1]]);
// Fail early
if (![target respondsToSelector:setter]) {
return NO;
}
@try {
// Get converted value
NSMethodSignature *signature = [RCTConvert methodSignatureForSelector:type];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature];
[invocation setArgument:&type atIndex:1];
[invocation setArgument:&json atIndex:2];
[invocation invokeWithTarget:[RCTConvert class]];
NSUInteger length = [signature methodReturnLength];
void *value = malloc(length);
[invocation getReturnValue:value];
// Set converted value
signature = [target methodSignatureForSelector:setter];
invocation = [NSInvocation invocationWithMethodSignature:signature];
[invocation setArgument:&setter atIndex:1];
[invocation setArgument:value atIndex:2];
[invocation invokeWithTarget:target];
free(value);
return YES;
}
@catch (NSException *exception) {
RCTLogError(@"Exception thrown while attempting to set property '%@' of \
'%@' with value '%@': %@", key, [target class], json, exception);
return NO;
}
}
BOOL RCTCopyProperty(id target, id source, NSString *keyPath)
{
// Split keypath
NSArray *parts = [keyPath componentsSeparatedByString:@"."];
NSString *key = [parts lastObject];
for (NSUInteger i = 0; i < parts.count - 1; i++) {
source = [source valueForKey:parts[i]];
target = [target valueForKey:parts[i]];
if (!source || !target) {
return NO;
}
}
// Get property getter
SEL getter = NSSelectorFromString(key);
// Get property setter
SEL setter = NSSelectorFromString([NSString stringWithFormat:@"set%@%@:",
[[key substringToIndex:1] uppercaseString],
[key substringFromIndex:1]]);
// Fail early
if (![source respondsToSelector:getter] || ![target respondsToSelector:setter]) {
return NO;
}
// Get value
NSMethodSignature *signature = [source methodSignatureForSelector:getter];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature];
[invocation setArgument:&getter atIndex:1];
[invocation invokeWithTarget:source];
NSUInteger length = [signature methodReturnLength];
void *value = malloc(length);
[invocation getReturnValue:value];
// Set value
signature = [target methodSignatureForSelector:setter];
invocation = [NSInvocation invocationWithMethodSignature:signature];
[invocation setArgument:&setter atIndex:1];
[invocation setArgument:value atIndex:2];
[invocation invokeWithTarget:target];
free(value);
return YES;
}
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