Implement Space "Add existing rooms" logic and ui

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/components/list/AvatarListItem.kt

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2025 Element Creations Ltd.
+ * Copyright 2025 New Vector 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.libraries.designsystem.components.list
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import io.element.android.libraries.designsystem.components.avatar.Avatar
+import io.element.android.libraries.designsystem.components.avatar.AvatarData
+import io.element.android.libraries.designsystem.components.avatar.AvatarType
+import io.element.android.libraries.designsystem.theme.components.ListItem
+import io.element.android.libraries.designsystem.theme.components.ListItemStyle
+import io.element.android.libraries.designsystem.theme.components.Text
+
+/**
+ * A list item with an Avatar as leading content.
+ *
+ * Figma link : https://www.figma.com/design/G1xy0HDZKJf5TCRFmKb5d5/Compound-Android-Components?node-id=1979-1894&m=dev
+ *
+ * @param avatarData The data for the avatar.
+ * @param avatarType The type of avatar to display.
+ * @param headline The main text of the list item.
+ * @param modifier The modifier to apply to the list item.
+ * @param supportingText The supporting text displayed below the headline.
+ * @param trailingContent The trailing content of the list item.
+ * @param enabled Whether the list item is enabled.
+ * @param style The style of the list item.
+ * @param onClick The callback to invoke when the list item is clicked.
+ */
+@Composable
+fun AvatarListItem(
+    avatarData: AvatarData,
+    avatarType: AvatarType,
+    headline: String,
+    modifier: Modifier = Modifier,
+    supportingText: String? = null,
+    trailingContent: ListItemContent? = null,
+    enabled: Boolean = true,
+    style: ListItemStyle = ListItemStyle.Default,
+    onClick: (() -> Unit)? = null,
+) {
+    ListItem(
+        modifier = modifier,
+        headlineContent = { Text(headline) },
+        supportingContent = supportingText?.let { @Composable { Text(it) } },
+        leadingContent = ListItemContent.Custom { _ ->
+            Avatar(
+                avatarData = avatarData,
+                avatarType = avatarType,
+            )
+        },
+        trailingContent = trailingContent,
+        style = style,
+        enabled = enabled,
+        onClick = onClick,
+    )
+}

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/recent/RecentRoom.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.libraries.matrix.api.room.recent
+
+import io.element.android.libraries.matrix.api.MatrixClient
+import io.element.android.libraries.matrix.api.room.RoomInfo
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
+
+/**
+ * Returns a [Flow] of [RoomInfo] from recently visited DM rooms.
+ * The flow emits items lazily, allowing callers to filter and take only what they need.
+ * Use [kotlinx.coroutines.flow.take] to limit results and stop iteration early.
+ */
+fun MatrixClient.getRecentRooms(
+    predicate: (RoomInfo) -> Boolean,
+): Flow<RoomInfo> = flow {
+    val recentlyVisitedRooms = getRecentlyVisitedRooms().getOrDefault(emptyList())
+    for (roomId in recentlyVisitedRooms) {
+        getRoom(roomId)?.use { room ->
+            val info = room.info()
+            if (predicate(info)) {
+                emit(info)
+            }
+        }
+    }
+}

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/model/SelectRoomInfo.kt

@@ -12,6 +12,7 @@ import io.element.android.libraries.designsystem.components.avatar.AvatarData
 import io.element.android.libraries.designsystem.components.avatar.AvatarSize
 import io.element.android.libraries.matrix.api.core.RoomAlias
 import io.element.android.libraries.matrix.api.core.RoomId
+import io.element.android.libraries.matrix.api.room.RoomInfo
 import io.element.android.libraries.matrix.api.roomlist.RoomSummary
 import io.element.android.libraries.matrix.api.user.MatrixUser
 import kotlinx.collections.immutable.ImmutableList
@@ -32,11 +33,14 @@ data class SelectRoomInfo(
     )
 }
 
-fun RoomSummary.toSelectRoomInfo() = SelectRoomInfo(
-    roomId = roomId,
-    name = info.name,
-    avatarUrl = info.avatarUrl,
-    heroes = info.heroes,
-    canonicalAlias = info.canonicalAlias,
-    isTombstoned = info.successorRoom != null,
+fun RoomSummary.toSelectRoomInfo() = info.toSelectRoomInfo()
+
+fun RoomInfo.toSelectRoomInfo() = SelectRoomInfo(
+    roomId = id,
+    name = name,
+    avatarUrl = avatarUrl,
+    heroes = heroes,
+    canonicalAlias = canonicalAlias,
+    isTombstoned = successorRoom != null,
 )
+