add support for resize mode

Author: erezrokah

ios/FirebaseUIImageView.h

@@ -9,10 +9,12 @@
 #import "Firebase.h"
 #import <FirebaseStorageUI/FirebaseStorageUI.h>
 
+#import <React/RCTResizeMode.h>
 
 @interface FirebaseImageView : UIImageView
 
 @property (nonatomic, copy) NSString *path;
+@property (nonatomic, assign) RCTResizeMode resizeMode;
 
 @end
 

ios/FirebaseUIImageView.m

@@ -27,4 +27,21 @@ - (void)setPath:(NSString *)path
     [self sd_setImageWithStorageReference:reference placeholderImage:placeholderImage];
 }
 
+- (void)setResizeMode:(RCTResizeMode)resizeMode
+{
+    if (_resizeMode != resizeMode) {
+        _resizeMode = resizeMode;
+        
+        if (_resizeMode == RCTResizeModeRepeat) {
+            // Repeat resize mode is handled by the UIImage. Use scale to fill
+            // so the repeated image fills the UIImageView.
+            self.contentMode = UIViewContentModeScaleToFill;
+        } else {
+            UIViewContentMode contentMode = (UIViewContentMode)resizeMode;
+            self.contentMode = contentMode;
+            self.clipsToBounds = true;
+        }
+    }
+}
+
 @end

ios/RCTFirebaseImageViewManager.m

@@ -14,6 +14,7 @@ @implementation RCTFirebaseImageViewManager
 
 RCT_EXPORT_MODULE()
 RCT_EXPORT_VIEW_PROPERTY(path, NSString)
+RCT_EXPORT_VIEW_PROPERTY(resizeMode, RCTResizeMode)
 
 - (UIView *)view
 {