Port HierarchicTextAttributeProvider to Kotlin

Author: cubuspl42

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/views/text/HierarchicTextAttributeProvider.java

@@ -0,0 +1,87 @@
+package com.facebook.react.internal.views.text
+
+import com.facebook.react.uimanager.ReactAccessibilityDelegate
+import com.facebook.react.views.text.ReactBaseTextShadowNode
+import com.facebook.react.views.text.TextAttributes
+import com.facebook.react.views.text.TextTransform
+
+/**
+ * Implementation of {@link EffectiveTextAttributeProvider} that provides effective text
+ * attributes based on a {@link ReactBaseTextShadowNode} instance and its parent.
+ */
+class HierarchicTextAttributeProvider(
+  private val textShadowNode: ReactBaseTextShadowNode,
+  private val parentTextAttributes: TextAttributes?,
+  private val textAttributes: TextAttributes
+) : EffectiveTextAttributeProvider {
+  override fun getTextTransform(): TextTransform = textAttributes.textTransform
+
+  override fun getRole(): ReactAccessibilityDelegate.Role? = textShadowNode.role
+
+  override fun getAccessibilityRole(): ReactAccessibilityDelegate.AccessibilityRole? =
+    textShadowNode.accessibilityRole
+
+  override fun isBackgroundColorSet(): Boolean = textShadowNode.isBackgroundColorSet
+
+  override fun getBackgroundColor(): Int = textShadowNode.backgroundColor
+
+  override fun isColorSet(): Boolean = textShadowNode.isColorSet
+
+  override fun getColor(): Int = textShadowNode.color
+
+  override fun getFontStyle(): Int = textShadowNode.fontStyle
+
+  override fun getFontWeight(): Int = textShadowNode.fontWeight
+
+  override fun getFontFamily(): String = textShadowNode.fontFamily
+
+  override fun getFontFeatureSettings(): String = textShadowNode.fontFeatureSettings
+
+  override fun isUnderlineTextDecorationSet(): Boolean = textShadowNode.isUnderlineTextDecorationSet
+
+  override fun isLineThroughTextDecorationSet(): Boolean =
+    textShadowNode.isLineThroughTextDecorationSet
+
+  override fun getTextShadowOffsetDx(): Float = textShadowNode.textShadowOffsetDx
+
+  override fun getTextShadowOffsetDy(): Float = textShadowNode.textShadowOffsetDy
+
+  override fun getTextShadowRadius(): Float = textShadowNode.textShadowRadius
+
+  override fun getTextShadowColor(): Int = textShadowNode.textShadowColor
+
+  override fun getEffectiveLetterSpacing(): Float {
+    val letterSpacing = textAttributes.effectiveLetterSpacing
+
+    val isParentLetterSpacingDifferent =
+      parentTextAttributes == null || parentTextAttributes.effectiveLetterSpacing != letterSpacing
+
+    return if (!letterSpacing.isNaN() && isParentLetterSpacingDifferent) {
+      letterSpacing
+    } else {
+      Float.NaN
+    }
+  }
+
+  override fun getEffectiveFontSize(): Int {
+    val fontSize = textAttributes.effectiveFontSize
+
+    return if (parentTextAttributes == null || parentTextAttributes.effectiveFontSize != fontSize) {
+      fontSize
+    } else {
+      EffectiveTextAttributeProvider.UNSET
+    }
+  }
+
+  override fun getEffectiveLineHeight(): Float {
+    val lineHeight = textAttributes.effectiveLineHeight
+    val isParentLineHeightDifferent =
+      parentTextAttributes == null || parentTextAttributes.effectiveLineHeight != lineHeight
+
+    return if (!lineHeight.isNaN() && isParentLineHeightDifferent) {
+      lineHeight
+    } else {
+      Float.NaN
+    }
+  }
+}