Fabric: Support for AttributedStringBox::Mode::OpaquePointer in RCTTextLayoutManager

Summary:
Now RCTTextLayoutManager (and TextLayoutManager) not only accept `AttributedStringBox`  but also is capable to measure such kind of string when it contains a pointer to NSAttributedString.
The same can be implemented for Android when/if needed.

Changelog: [Internal] Fabric-specific internal change.

Reviewed By: sammy-SC

Differential Revision: D18670791

fbshipit-source-id: f19089de64d00e1290767310a500ade4cede4685

Author: shergin

ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.h

@@ -19,13 +19,13 @@ NS_ASSUME_NONNULL_BEGIN
  */
 @interface RCTTextLayoutManager : NSObject
 
-- (facebook::react::Size)
-    measureWithAttributedString:
-        (facebook::react::AttributedString)attributedString
-            paragraphAttributes:
-                (facebook::react::ParagraphAttributes)paragraphAttributes
-              layoutConstraints:
-                  (facebook::react::LayoutConstraints)layoutConstraints;
+- (facebook::react::Size)measureAttributedString:(facebook::react::AttributedString)attributedString
+                             paragraphAttributes:(facebook::react::ParagraphAttributes)paragraphAttributes
+                               layoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints;
+
+- (facebook::react::Size)measureNSAttributedString:(NSAttributedString *)attributedString
+                               paragraphAttributes:(facebook::react::ParagraphAttributes)paragraphAttributes
+                                 layoutConstraints:(facebook::react::LayoutConstraints)layoutConstraints;
 
 - (void)drawAttributedString:(facebook::react::AttributedString)attributedString
          paragraphAttributes:

ReactCommon/fabric/textlayoutmanager/platform/ios/RCTTextLayoutManager.mm

@@ -32,16 +32,15 @@ static NSLineBreakMode RCTNSLineBreakModeFromEllipsizeMode(EllipsizeMode ellipsi
   }
 }
 
-- (facebook::react::Size)
-    measureWithAttributedString:(AttributedString)attributedString
-            paragraphAttributes:(ParagraphAttributes)paragraphAttributes
-              layoutConstraints:(LayoutConstraints)layoutConstraints {
+- (facebook::react::Size)measureNSAttributedString:(NSAttributedString *)attributedString
+                               paragraphAttributes:(ParagraphAttributes)paragraphAttributes
+                                 layoutConstraints:(LayoutConstraints)layoutConstraints
+{
   CGSize maximumSize = CGSize{layoutConstraints.maximumSize.width,
                               layoutConstraints.maximumSize.height};
-  NSTextStorage *textStorage = [self
-      _textStorageAndLayoutManagerWithAttributesString:[self _nsAttributedStringFromAttributedString:attributedString]
-                                   paragraphAttributes:paragraphAttributes
-                                                  size:maximumSize];
+  NSTextStorage *textStorage = [self _textStorageAndLayoutManagerWithAttributesString:attributedString
+                                                                  paragraphAttributes:paragraphAttributes
+                                                                                 size:maximumSize];
 
   NSLayoutManager *layoutManager = textStorage.layoutManagers.firstObject;
   NSTextContainer *textContainer = layoutManager.textContainers.firstObject;
@@ -55,6 +54,15 @@ static NSLineBreakMode RCTNSLineBreakModeFromEllipsizeMode(EllipsizeMode ellipsi
   return facebook::react::Size{size.width, size.height};
 }
 
+- (facebook::react::Size)measureAttributedString:(AttributedString)attributedString
+                             paragraphAttributes:(ParagraphAttributes)paragraphAttributes
+                               layoutConstraints:(LayoutConstraints)layoutConstraints
+{
+  return [self measureNSAttributedString:[self _nsAttributedStringFromAttributedString:attributedString]
+                     paragraphAttributes:paragraphAttributes
+                       layoutConstraints:layoutConstraints];
+}
+
 - (void)drawAttributedString:(AttributedString)attributedString
          paragraphAttributes:(ParagraphAttributes)paragraphAttributes
                        frame:(CGRect)frame {

ReactCommon/fabric/textlayoutmanager/platform/ios/TextLayoutManager.mm

@@ -7,6 +7,8 @@
 
 #include "TextLayoutManager.h"
 
+#include <react/utils/ManagedObjectWrapper.h>
+
 #import "RCTTextLayoutManager.h"
 
 namespace facebook {
@@ -34,15 +36,31 @@
     ParagraphAttributes paragraphAttributes,
     LayoutConstraints layoutConstraints) const
 {
-  auto &attributedString = attributedStringBox.getValue();
+  RCTTextLayoutManager *textLayoutManager = (__bridge RCTTextLayoutManager *)self_;
+
+  switch (attributedStringBox.getMode()) {
+    case AttributedStringBox::Mode::Value: {
+      auto &attributedString = attributedStringBox.getValue();
 
-  return measureCache_.get(
-      MeasureCacheKey{attributedString, paragraphAttributes, layoutConstraints}, [&](MeasureCacheKey const &key) {
-        RCTTextLayoutManager *textLayoutManager = (__bridge RCTTextLayoutManager *)self_;
-        return [textLayoutManager measureWithAttributedString:attributedString
+      return measureCache_.get(
+          MeasureCacheKey{attributedString, paragraphAttributes, layoutConstraints}, [&](MeasureCacheKey const &key) {
+            return [textLayoutManager measureAttributedString:attributedString
                                           paragraphAttributes:paragraphAttributes
                                             layoutConstraints:layoutConstraints];
-      });
+          });
+      break;
+    }
+
+    case AttributedStringBox::Mode::OpaquePointer: {
+      NSAttributedString *nsAttributedString =
+          (NSAttributedString *)unwrapManagedObject(attributedStringBox.getOpaquePointer());
+
+      return [textLayoutManager measureNSAttributedString:nsAttributedString
+                                      paragraphAttributes:paragraphAttributes
+                                        layoutConstraints:layoutConstraints];
+      break;
+    }
+  }
 }
 
 } // namespace react