From 925e46ff3a5996605227083ee90891ef02aced3a Mon Sep 17 00:00:00 2001
From: Greyson Parrelli <greyson@signal.org>
Date: Thu, 13 Nov 2025 10:45:30 -0500
Subject: [PATCH] Add ability to force RTL to compose previews.

---
 .../org/signal/core/ui/compose/Previews.kt    | 27 ++++++++++++++-----
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/core-ui/src/main/java/org/signal/core/ui/compose/Previews.kt b/core-ui/src/main/java/org/signal/core/ui/compose/Previews.kt
index 1f3fd252b1..b4e61825ac 100644
--- a/core-ui/src/main/java/org/signal/core/ui/compose/Previews.kt
+++ b/core-ui/src/main/java/org/signal/core/ui/compose/Previews.kt
@@ -9,29 +9,42 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalLayoutDirection
+import androidx.compose.ui.unit.LayoutDirection
 import org.signal.core.ui.compose.theme.SignalTheme
 
 object Previews {
   @Composable
   fun Preview(
+    forceRtl: Boolean = false,
     content: @Composable () -> Unit
   ) {
-    SignalTheme {
-      Surface {
-        content()
+    val dir = if (forceRtl) LayoutDirection.Rtl else LocalLayoutDirection.current
+
+    CompositionLocalProvider(LocalLayoutDirection provides dir) {
+      SignalTheme {
+        Surface {
+          content()
+        }
       }
     }
   }
 
   @Composable
   fun BottomSheetPreview(
+    forceRtl: Boolean = false,
     content: @Composable () -> Unit
   ) {
-    SignalTheme {
-      Surface {
-        Box(modifier = Modifier.background(color = SignalTheme.colors.colorSurface1)) {
-          content()
+    val dir = if (forceRtl) LayoutDirection.Rtl else LocalLayoutDirection.current
+
+    CompositionLocalProvider(LocalLayoutDirection provides dir) {
+      SignalTheme {
+        Surface {
+          Box(modifier = Modifier.background(color = SignalTheme.colors.colorSurface1)) {
+            content()
+          }
         }
       }
     }