convert DefaultStyleValuesUtil to Kotlin (facebook#43884)

Summary:
Pull Request resolved: facebook#43884

convert Java to Kotlin: `/react/view/text/DefaultStyleValuesUtil.java`

Changelog:
[Internal] internal

Differential Revision: D55777322

packages/react-native/ReactAndroid/api/ReactAndroid.api

@@ -6874,9 +6874,10 @@ public class com/facebook/react/views/switchview/ReactSwitchManager$ReactSwitchS
 }
 
 public final class com/facebook/react/views/text/DefaultStyleValuesUtil {
-	public static fun getDefaultTextColor (Landroid/content/Context;)Landroid/content/res/ColorStateList;
-	public static fun getDefaultTextColorHighlight (Landroid/content/Context;)I
-	public static fun getDefaultTextColorHint (Landroid/content/Context;)Landroid/content/res/ColorStateList;
+	public static final field INSTANCE Lcom/facebook/react/views/text/DefaultStyleValuesUtil;
+	public static final fun getDefaultTextColor (Landroid/content/Context;)Landroid/content/res/ColorStateList;
+	public static final fun getDefaultTextColorHighlight (Landroid/content/Context;)I
+	public static final fun getDefaultTextColorHint (Landroid/content/Context;)Landroid/content/res/ColorStateList;
 }
 
 public class com/facebook/react/views/text/FontMetricsUtil {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/text/DefaultStyleValuesUtil.kt

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.views.text
+
+import android.R
+import android.content.Context
+import android.content.res.ColorStateList
+
+/** Utility class that access default values from style */
+public object DefaultStyleValuesUtil {
+
+  /**
+   * Utility method that returns the default text hint color as define by the theme
+   *
+   * @param context The Context
+   * @return The ColorStateList for the hint text as defined in the style
+   */
+  @JvmStatic
+  public fun getDefaultTextColorHint(context: Context): ColorStateList? =
+      getDefaultTextAttribute(context, R.attr.textColorHint)
+
+  /**
+   * Utility method that returns the default text color as define by the theme
+   *
+   * @param context The Context
+   * @return The ColorStateList for the text as defined in the style
+   */
+  @JvmStatic
+  public fun getDefaultTextColor(context: Context): ColorStateList? =
+      getDefaultTextAttribute(context, R.attr.textColor)
+
+  /**
+   * Utility method that returns the default text highlight color as define by the theme
+   *
+   * @param context The Context
+   * @return The int for the highlight color as defined in the style
+   */
+  @JvmStatic
+  public fun getDefaultTextColorHighlight(context: Context): Int =
+      getDefaultTextAttribute(context, R.attr.textColorHighlight)?.defaultColor
+          ?: 0 // if the highlight color is not defined in the theme, return black
+
+  private fun getDefaultTextAttribute(context: Context, attribute: Int): ColorStateList? {
+    context.theme.obtainStyledAttributes(intArrayOf(attribute)).use { typedArray ->
+      return typedArray.getColorStateList(0)
+    }
+  }
+}