Extract SingleItemPreviewRenderer, make it a class and rename it to SampleMediaRenderer

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/attachments/preview/AttachmentsPreviewView.kt

@@ -13,7 +13,6 @@ import androidx.compose.animation.core.tween
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
 import androidx.compose.foundation.ExperimentalFoundationApi
-import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -39,7 +38,6 @@ import androidx.compose.runtime.setValue
 import androidx.compose.runtime.snapshotFlow
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.semantics.heading
 import androidx.compose.ui.semantics.semantics
@@ -77,8 +75,6 @@ import io.element.android.libraries.designsystem.theme.components.Switch
 import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.theme.components.TopAppBar
 import io.element.android.libraries.designsystem.theme.floatingDateBadgeBackground
-import io.element.android.libraries.designsystem.utils.CommonDrawables
-import io.element.android.libraries.mediaviewer.api.local.LocalMedia
 import io.element.android.libraries.mediaviewer.api.local.LocalMediaRenderer
 import io.element.android.libraries.preferences.api.store.VideoCompressionPreset
 import io.element.android.libraries.textcomposer.TextComposer
@@ -93,17 +89,6 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.collectLatest
 import kotlin.time.Duration.Companion.milliseconds
 
-private val SingleItemPreviewRenderer = object : LocalMediaRenderer {
-    @Composable
-    override fun Render(localMedia: LocalMedia) {
-        Image(
-            painter = painterResource(id = CommonDrawables.sample_background),
-            modifier = Modifier.fillMaxSize(),
-            contentDescription = null,
-        )
-    }
-}
-
 /**
  * Ref: https://www.figma.com/design/zftpgS6LjiczobJZ1GUNpt/Updates-to-Media---File-Upload?node-id=51-3514
  */
@@ -571,7 +556,7 @@ private fun AttachmentsPreviewBottomActions(
 internal fun AttachmentsPreviewViewPreview(@PreviewParameter(AttachmentsPreviewStateProvider::class) state: AttachmentsPreviewState) = ElementPreviewDark {
     AttachmentsPreviewView(
         state = state,
-        localMediaRenderer = SingleItemPreviewRenderer,
+        localMediaRenderer = SampleMediaRenderer(),
     )
 }
 
@@ -580,7 +565,7 @@ internal fun AttachmentsPreviewViewPreview(@PreviewParameter(AttachmentsPreviewS
 internal fun AttachmentsPreviewGalleryViewPreview() = ElementPreviewDark {
     AttachmentsPreviewView(
         state = anAttachmentsPreviewGalleryState(),
-        localMediaRenderer = SingleItemPreviewRenderer,
+        localMediaRenderer = SampleMediaRenderer(),
     )
 }
 

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/attachments/preview/SampleMediaRenderer.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2026 Element Creations Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.features.messages.impl.attachments.preview
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.painterResource
+import io.element.android.libraries.designsystem.utils.CommonDrawables
+import io.element.android.libraries.mediaviewer.api.local.LocalMedia
+import io.element.android.libraries.mediaviewer.api.local.LocalMediaRenderer
+
+/**
+ * An implementation of [LocalMediaRenderer] that displays a sample background image.
+ * To be used for Previews only.
+ */
+class SampleMediaRenderer : LocalMediaRenderer {
+    @Composable
+    override fun Render(localMedia: LocalMedia) {
+        Image(
+            painter = painterResource(id = CommonDrawables.sample_background),
+            modifier = Modifier.fillMaxSize(),
+            contentDescription = null,
+        )
+    }
+}