c9de6cdb6c
Added Arabic, Portuguese, and Simplified Chinese to the list of languages with specialized fields in the Mapbox Streets source. Rely on NSBundle to select the most appropriate locale based on the user’s preferred languages.
54 lines
2.3 KiB
Objective-C
54 lines
2.3 KiB
Objective-C
#import "MGLVectorSource+MBXAdditions.h"
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@implementation MGLVectorSource (MBXAdditions)
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+ (NS_SET_OF(NSString *) *)mapboxStreetsLanguages {
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// https://www.mapbox.com/vector-tiles/mapbox-streets-v7/#overview
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static dispatch_once_t onceToken;
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static NS_SET_OF(NSString *) *mapboxStreetsLanguages;
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dispatch_once(&onceToken, ^{
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// https://www.mapbox.com/vector-tiles/mapbox-streets-v7/#overview
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mapboxStreetsLanguages = [NSSet setWithObjects:@"ar", @"de", @"en", @"es", @"fr", @"pt", @"ru", @"zh", @"zh-Hans", nil];
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});
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return mapboxStreetsLanguages;
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}
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+ (NSString *)preferredMapboxStreetsLanguage {
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NSArray<NSString *> *supportedLanguages = [MGLVectorSource mapboxStreetsLanguages].allObjects;
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NSArray<NSString *> *preferredLanguages = [NSBundle preferredLocalizationsFromArray:supportedLanguages
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forPreferences:[NSLocale preferredLanguages]];
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NSString *mostSpecificLanguage;
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for (NSString *language in preferredLanguages) {
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if (language.length > mostSpecificLanguage.length) {
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mostSpecificLanguage = language;
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}
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}
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return mostSpecificLanguage ?: @"en";
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}
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- (BOOL)isMapboxStreets {
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NSURL *url = self.configurationURL;
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if (![url.scheme isEqualToString:@"mapbox"]) {
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return NO;
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}
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NSArray *identifiers = [url.host componentsSeparatedByString:@","];
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return [identifiers containsObject:@"mapbox.mapbox-streets-v7"] || [identifiers containsObject:@"mapbox.mapbox-streets-v6"];
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}
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- (NS_DICTIONARY_OF(NSString *, NSString *) *)localizedKeysByKeyForPreferredLanguage:(nullable NSString *)preferredLanguage {
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if (!self.mapboxStreets) {
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return @{};
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}
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// Replace {name} and {name_*} with the matching localized name tag.
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NSString *localizedKey = preferredLanguage ? [NSString stringWithFormat:@"name_%@", preferredLanguage] : @"name";
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NSMutableDictionary *localizedKeysByKey = [NSMutableDictionary dictionaryWithObject:localizedKey forKey:@"name"];
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for (NSString *languageCode in [MGLVectorSource mapboxStreetsLanguages]) {
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NSString *key = [NSString stringWithFormat:@"name_%@", languageCode];
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localizedKeysByKey[key] = localizedKey;
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}
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return localizedKeysByKey;
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}
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@end
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