Allow PlatformColor to work with RCTView border colors (#29728)

Summary:
# See PR
#29728

# From PR Author
Using `PlatformColor` with border colors doesn't work currently when switching dark mode as the information is lost when converting to `CGColor`. This change keeps the border colors around as `UIColor` so switching to dark mode works.

```ts
<View
  style={{
    borderColor: DynamicColorIOS({ dark: "yellow", light: "red" }),
    borderWidth: 1,
  }}
>
...
</View>
```
This view will start with a red border (assuming light mode when started), but will not change to a yellow border when switching to dark mode. With this PR, the border color will be correctly set to yellow.

## Changelog

[iOS] [Fixed] - Allow PlatformColor to work with border colors

Pull Request resolved: #29728

Test Plan:
1. Assign a `PlatformColor` or `DynamicColorIOS` to a view border color.
2. Toggle between dark / light mode. See the colors change.

Reviewed By: lunaleaps

Differential Revision: D29268376

Pulled By: p-sun

fbshipit-source-id: 586545b05be0beb0e6e5ace6e3f74b304620ad94

React/Views/RCTView.h

@@ -82,13 +82,13 @@ extern const UIAccessibilityTraits SwitchAccessibilityTrait;
 /**
  * Border colors (actually retained).
  */
-@property (nonatomic, assign) CGColorRef borderTopColor;
-@property (nonatomic, assign) CGColorRef borderRightColor;
-@property (nonatomic, assign) CGColorRef borderBottomColor;
-@property (nonatomic, assign) CGColorRef borderLeftColor;
-@property (nonatomic, assign) CGColorRef borderStartColor;
-@property (nonatomic, assign) CGColorRef borderEndColor;
-@property (nonatomic, assign) CGColorRef borderColor;
+@property (nonatomic, strong) UIColor *borderTopColor;
+@property (nonatomic, strong) UIColor *borderRightColor;
+@property (nonatomic, strong) UIColor *borderBottomColor;
+@property (nonatomic, strong) UIColor *borderLeftColor;
+@property (nonatomic, strong) UIColor *borderStartColor;
+@property (nonatomic, strong) UIColor *borderEndColor;
+@property (nonatomic, strong) UIColor *borderColor;
 
 /**
  * Border widths.

React/Views/RCTView.m

@@ -729,28 +729,28 @@ - (RCTBorderColors)borderColors
   const BOOL isRTL = _reactLayoutDirection == UIUserInterfaceLayoutDirectionRightToLeft;
 
   if ([[RCTI18nUtil sharedInstance] doLeftAndRightSwapInRTL]) {
-    const CGColorRef borderStartColor = _borderStartColor ?: _borderLeftColor;
-    const CGColorRef borderEndColor = _borderEndColor ?: _borderRightColor;
+    UIColor *borderStartColor = _borderStartColor ?: _borderLeftColor;
+    UIColor *borderEndColor = _borderEndColor ?: _borderRightColor;
 
-    const CGColorRef directionAwareBorderLeftColor = isRTL ? borderEndColor : borderStartColor;
-    const CGColorRef directionAwareBorderRightColor = isRTL ? borderStartColor : borderEndColor;
+    UIColor *directionAwareBorderLeftColor = isRTL ? borderEndColor : borderStartColor;
+    UIColor *directionAwareBorderRightColor = isRTL ? borderStartColor : borderEndColor;
 
     return (RCTBorderColors){
-        _borderTopColor ?: _borderColor,
-        directionAwareBorderLeftColor ?: _borderColor,
-        _borderBottomColor ?: _borderColor,
-        directionAwareBorderRightColor ?: _borderColor,
+        (_borderTopColor ?: _borderColor).CGColor,
+        (directionAwareBorderLeftColor ?: _borderColor).CGColor,
+        (_borderBottomColor ?: _borderColor).CGColor,
+        (directionAwareBorderRightColor ?: _borderColor).CGColor,
     };
   }
 
-  const CGColorRef directionAwareBorderLeftColor = isRTL ? _borderEndColor : _borderStartColor;
-  const CGColorRef directionAwareBorderRightColor = isRTL ? _borderStartColor : _borderEndColor;
+  UIColor *directionAwareBorderLeftColor = isRTL ? _borderEndColor : _borderStartColor;
+  UIColor *directionAwareBorderRightColor = isRTL ? _borderStartColor : _borderEndColor;
 
   return (RCTBorderColors){
-      _borderTopColor ?: _borderColor,
-      directionAwareBorderLeftColor ?: _borderLeftColor ?: _borderColor,
-      _borderBottomColor ?: _borderColor,
-      directionAwareBorderRightColor ?: _borderRightColor ?: _borderColor,
+    (_borderTopColor ?: _borderColor).CGColor,
+    (directionAwareBorderLeftColor ?: _borderLeftColor ?: _borderColor).CGColor,
+    (_borderBottomColor ?: _borderColor).CGColor,
+    (directionAwareBorderRightColor ?: _borderRightColor ?: _borderColor).CGColor,
   };
 }
 
@@ -902,19 +902,18 @@ - (void)updateClippingForLayer:(CALayer *)layer
 
 #pragma mark Border Color
 
-#define setBorderColor(side)                                \
-  -(void)setBorder##side##Color : (CGColorRef)color         \
-  {                                                         \
-    if (CGColorEqualToColor(_border##side##Color, color)) { \
-      return;                                               \
-    }                                                       \
-    CGColorRelease(_border##side##Color);                   \
-    _border##side##Color = CGColorRetain(color);            \
-    [self.layer setNeedsDisplay];                           \
+#define setBorderColor(side)                       \
+  -(void)setBorder##side##Color : (UIColor *)color \
+  {                                                \
+    if ([_border##side##Color isEqual:color]) {    \
+      return;                                      \
+    }                                              \
+    _border##side##Color = color;                  \
+    [self.layer setNeedsDisplay];                  \
   }
 
 setBorderColor() setBorderColor(Top) setBorderColor(Right) setBorderColor(Bottom) setBorderColor(Left)
-        setBorderColor(Start) setBorderColor(End)
+    setBorderColor(Start) setBorderColor(End)
 
 #pragma mark - Border Width
 
@@ -928,8 +927,8 @@ -(void)setBorder##side##Width : (CGFloat)width \
     [self.layer setNeedsDisplay];                \
   }
 
-            setBorderWidth() setBorderWidth(Top) setBorderWidth(Right) setBorderWidth(Bottom) setBorderWidth(Left)
-                setBorderWidth(Start) setBorderWidth(End)
+        setBorderWidth() setBorderWidth(Top) setBorderWidth(Right) setBorderWidth(Bottom) setBorderWidth(Left)
+            setBorderWidth(Start) setBorderWidth(End)
 
 #pragma mark - Border Radius
 
@@ -943,9 +942,9 @@ -(void)setBorder##side##Radius : (CGFloat)radius \
     [self.layer setNeedsDisplay];                  \
   }
 
-                    setBorderRadius() setBorderRadius(TopLeft) setBorderRadius(TopRight) setBorderRadius(TopStart)
-                        setBorderRadius(TopEnd) setBorderRadius(BottomLeft) setBorderRadius(BottomRight)
-                            setBorderRadius(BottomStart) setBorderRadius(BottomEnd)
+                setBorderRadius() setBorderRadius(TopLeft) setBorderRadius(TopRight) setBorderRadius(TopStart)
+                    setBorderRadius(TopEnd) setBorderRadius(BottomLeft) setBorderRadius(BottomRight)
+                        setBorderRadius(BottomStart) setBorderRadius(BottomEnd)
 
 #pragma mark - Border Style
 
@@ -959,17 +958,6 @@ -(void)setBorder##side##Style : (RCTBorderStyle)style \
     [self.layer setNeedsDisplay];                       \
   }
 
-                                setBorderStyle()
+                            setBorderStyle()
 
-    - (void)dealloc
-{
-  CGColorRelease(_borderColor);
-  CGColorRelease(_borderTopColor);
-  CGColorRelease(_borderRightColor);
-  CGColorRelease(_borderBottomColor);
-  CGColorRelease(_borderLeftColor);
-  CGColorRelease(_borderStartColor);
-  CGColorRelease(_borderEndColor);
-}
-
-@end
+                                @end

React/Views/RCTViewManager.m

@@ -261,7 +261,7 @@ - (RCTShadowView *)shadowView
 RCT_CUSTOM_VIEW_PROPERTY(borderColor, CGColor, RCTView)
 {
   if ([view respondsToSelector:@selector(setBorderColor:)]) {
-    view.borderColor = json ? [RCTConvert CGColor:json] : defaultView.borderColor;
+    view.borderColor = json ? [RCTConvert UIColor:json] : defaultView.borderColor;
   } else {
     view.layer.borderColor = json ? [RCTConvert CGColor:json] : defaultView.layer.borderColor;
   }
@@ -303,7 +303,7 @@ - (RCTShadowView *)shadowView
   RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Color, UIColor, RCTView)                                    \
   {                                                                                                  \
     if ([view respondsToSelector:@selector(setBorder##SIDE##Color:)]) {                              \
-      view.border##SIDE##Color = json ? [RCTConvert CGColor:json] : defaultView.border##SIDE##Color; \
+      view.border##SIDE##Color = json ? [RCTConvert UIColor:json] : defaultView.border##SIDE##Color; \
     }                                                                                                \
   }
 

packages/rn-tester/js/examples/PlatformColor/PlatformColorExample.js

@@ -236,6 +236,20 @@ function DynamicColorsExample() {
           }}
         />
       </View>
+      <View style={styles.row}>
+        <Text style={styles.labelCell}>
+          DynamicColorIOS({'{\n'}
+          {'  '}light: 'red', dark: 'blue'{'\n'}
+          {'}'})
+        </Text>
+        <View
+          style={{
+            ...styles.colorCell,
+            borderColor: DynamicColorIOS({light: 'red', dark: 'blue'}),
+            borderWidth: 1,
+          }}
+        />
+      </View>
       <View style={styles.row}>
         <Text style={styles.labelCell}>
           DynamicColorIOS({'{\n'}