Add some previews.

features/roomlist/src/main/kotlin/io/element/android/features/roomlist/components/RoomSummaryRow.kt

@@ -46,13 +46,18 @@ import androidx.compose.ui.graphics.Path
 import androidx.compose.ui.graphics.Shape
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.tooling.preview.PreviewParameter
 import androidx.compose.ui.unit.Density
 import androidx.compose.ui.unit.LayoutDirection
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.google.accompanist.placeholder.material.placeholder
 import io.element.android.features.roomlist.model.RoomListRoomSummary
+import io.element.android.features.roomlist.model.RoomListRoomSummaryProvider
 import io.element.android.libraries.designsystem.components.avatar.Avatar
+import io.element.android.libraries.designsystem.preview.ElementPreviewDark
+import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.designsystem.theme.ElementTheme
 import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.theme.roomListPlaceHolder
@@ -192,3 +197,18 @@ class PercentRectangleSizeShape(private val percent: Float) : Shape {
         return Outline.Generic(path)
     }
 }
+
+@Preview
+@Composable
+internal fun RoomSummaryRowLightPreview(@PreviewParameter(RoomListRoomSummaryProvider::class) data: RoomListRoomSummary) =
+    ElementPreviewLight { ContentToPreview(data) }
+
+@Preview
+@Composable
+internal fun RoomSummaryRowDarkPreview(@PreviewParameter(RoomListRoomSummaryProvider::class) data: RoomListRoomSummary) =
+    ElementPreviewDark { ContentToPreview(data) }
+
+@Composable
+private fun ContentToPreview(data: RoomListRoomSummary) {
+    RoomSummaryRow(data)
+}

features/roomlist/src/main/kotlin/io/element/android/features/roomlist/model/RoomListRoomSummaryProvider.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.features.roomlist.model
+
+import androidx.compose.ui.tooling.preview.PreviewParameterProvider
+import io.element.android.libraries.designsystem.components.avatar.AvatarData
+import io.element.android.libraries.matrix.core.RoomId
+
+open class RoomListRoomSummaryProvider : PreviewParameterProvider<RoomListRoomSummary> {
+    override val values: Sequence<RoomListRoomSummary>
+        get() = sequenceOf(
+            aRoomListRoomSummary(),
+            aRoomListRoomSummary().copy(lastMessage = null),
+            aRoomListRoomSummary().copy(hasUnread = true),
+            aRoomListRoomSummary().copy(timestamp = "88:88"),
+            aRoomListRoomSummary().copy(timestamp = "88:88", hasUnread = true),
+            aRoomListRoomSummary().copy(isPlaceholder = true),
+        )
+}
+
+fun aRoomListRoomSummary() = RoomListRoomSummary(
+    id = "!roomId",
+    roomId = RoomId("!roomId"),
+    name = "Room name",
+    hasUnread = false,
+    timestamp = null,
+    lastMessage = "Last message",
+    avatarData = AvatarData("!roomId", "Room name"),
+    isPlaceholder = false,
+)