[ios] add callback method

2 files changed, 21 insertions, 4 deletions

diff --git a/platform/darwin/src/MGLOfflineStorage.h b/platform/darwin/src/MGLOfflineStorage.h
index a827a1261d..8ec70a7c7d 100644
--- a/platform/darwin/src/MGLOfflineStorage.h
+++ b/platform/darwin/src/MGLOfflineStorage.h
@@ -352,7 +352,7 @@ MGL_EXPORT
  This method should be called before using the database.
  */
 
-- (void)setMaximumAmbientCacheSize:(uint64_t)cacheSize;
+- (void)setMaximumAmbientCacheSize:(void (^)(unsigned long cacheSize, NSError * _Nullable error))completion;
 
 /*
  Forces cache tiles to be invalidated and updated from the tile server. This ensures that the
@@ -360,6 +360,8 @@ MGL_EXPORT
 
 - (void)invalidateAmbientCache;
 
+- (void)clearAmbientCache;
+
 /*
  Inserts the provided resource into the ambient cache.
  
diff --git a/platform/darwin/src/MGLOfflineStorage.mm b/platform/darwin/src/MGLOfflineStorage.mm
index 6e15b01bbe..c7462b5548 100644
--- a/platform/darwin/src/MGLOfflineStorage.mm
+++ b/platform/darwin/src/MGLOfflineStorage.mm
@@ -488,17 +488,32 @@ const MGLExceptionName MGLUnsupportedRegionTypeException = @"MGLUnsupportedRegio
 
 #pragma mark - Ambient Cache management
 
-- (void)setMaximumAmbientCacheSize:(uint64_t)cacheSize {
+
+void maxCacheSizeCallback(std::exception_ptr result) {
+    
+    
     
-    if ( ! (cacheSize > 0) ) { /* give a warning*/ } ;
-    _mbglFileSource->setMaximumAmbientCacheSize(cacheSize, nil); // I should do something with the std::exception_ptr here but i don't know what
+    //    if ( ! (cacheSize > 0) ) { /* give a warning*/ } ;
+   
+    //
+        // ERROR: Too few arguments to function call, expected 2,
 }
 
+- (void)setMaximumAmbientCacheSize:(NSInteger)cacheSize withCallback:(void (^)(NSError *))callback {
+
+    
+    _mbglFileSource->setMaximumAmbientCacheSize(cacheSize, maxCacheSizeCallback);
+
+    }
+
 - (void)invalidateAmbientCache {
     _mbglFileSource->invalidateAmbientCache(nil);
     // Do something with the std::exception_ptr here
 }
 
+- (void)clearAmbientCache {
+    
+}
 #pragma mark -
 
 - (unsigned long long)countOfBytesCompleted {