Space List

Extract InviteButtonsRowMolecule
Take into account seenSpaceInvites

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/HomePresenter.kt

@@ -18,6 +18,7 @@ import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import dev.zacsweers.metro.Inject
 import io.element.android.features.home.impl.roomlist.RoomListState
+import io.element.android.features.home.impl.spaces.HomeSpacesState
 import io.element.android.features.logout.api.direct.DirectLogoutState
 import io.element.android.features.rageshake.api.RageshakeFeatureAvailability
 import io.element.android.libraries.architecture.Presenter
@@ -36,6 +37,7 @@ class HomePresenter(
     private val snackbarDispatcher: SnackbarDispatcher,
     private val indicatorService: IndicatorService,
     private val roomListPresenter: Presenter<RoomListState>,
+    private val homeSpacesPresenter: Presenter<HomeSpacesState>,
     private val logoutPresenter: Presenter<DirectLogoutState>,
     private val rageshakeFeatureAvailability: RageshakeFeatureAvailability,
     private val featureFlagService: FeatureFlagService,
@@ -46,6 +48,7 @@ class HomePresenter(
         val isOnline by syncService.isOnline.collectAsState()
         val canReportBug by remember { rageshakeFeatureAvailability.isAvailable() }.collectAsState(false)
         val roomListState = roomListPresenter.present()
+        val homeSpacesState = homeSpacesPresenter.present()
         val isSpaceFeatureEnabled by remember {
             featureFlagService.isFeatureEnabledFlow(FeatureFlags.Space)
         }.collectAsState(initial = false)
@@ -78,6 +81,7 @@ class HomePresenter(
             hasNetworkConnection = isOnline,
             currentHomeNavigationBarItem = currentHomeNavigationBarItem,
             roomListState = roomListState,
+            homeSpacesState = homeSpacesState,
             snackbarMessage = snackbarMessage,
             canReportBug = canReportBug,
             directLogoutState = directLogoutState,

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/HomeState.kt

@@ -9,6 +9,7 @@ package io.element.android.features.home.impl
 
 import androidx.compose.runtime.Immutable
 import io.element.android.features.home.impl.roomlist.RoomListState
+import io.element.android.features.home.impl.spaces.HomeSpacesState
 import io.element.android.features.logout.api.direct.DirectLogoutState
 import io.element.android.libraries.designsystem.utils.snackbar.SnackbarMessage
 import io.element.android.libraries.matrix.api.user.MatrixUser
@@ -20,6 +21,7 @@ data class HomeState(
     val hasNetworkConnection: Boolean,
     val currentHomeNavigationBarItem: HomeNavigationBarItem,
     val roomListState: RoomListState,
+    val homeSpacesState: HomeSpacesState,
     val snackbarMessage: SnackbarMessage?,
     val canReportBug: Boolean,
     val directLogoutState: DirectLogoutState,

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/HomeStateProvider.kt

@@ -13,6 +13,8 @@ import io.element.android.features.home.impl.roomlist.RoomListStateProvider
 import io.element.android.features.home.impl.roomlist.aRoomListState
 import io.element.android.features.home.impl.roomlist.aRoomsContentState
 import io.element.android.features.home.impl.roomlist.generateRoomListRoomSummaryList
+import io.element.android.features.home.impl.spaces.HomeSpacesState
+import io.element.android.features.home.impl.spaces.aHomeSpacesState
 import io.element.android.features.logout.api.direct.DirectLogoutState
 import io.element.android.features.logout.api.direct.aDirectLogoutState
 import io.element.android.libraries.designsystem.utils.snackbar.SnackbarMessage
@@ -51,6 +53,7 @@ internal fun aHomeState(
     snackbarMessage: SnackbarMessage? = null,
     currentHomeNavigationBarItem: HomeNavigationBarItem = HomeNavigationBarItem.Chats,
     roomListState: RoomListState = aRoomListState(),
+    homeSpacesState: HomeSpacesState = aHomeSpacesState(),
     canReportBug: Boolean = true,
     isSpaceFeatureEnabled: Boolean = false,
     directLogoutState: DirectLogoutState = aDirectLogoutState(),
@@ -64,6 +67,7 @@ internal fun aHomeState(
     directLogoutState = directLogoutState,
     currentHomeNavigationBarItem = currentHomeNavigationBarItem,
     roomListState = roomListState,
+    homeSpacesState = homeSpacesState,
     isSpaceFeatureEnabled = isSpaceFeatureEnabled,
     eventSink = eventSink,
 )

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/HomeView.kt

@@ -25,7 +25,6 @@ import androidx.compose.material3.rememberTopAppBarState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.input.nestedscroll.nestedScroll
@@ -50,6 +49,7 @@ import io.element.android.features.home.impl.roomlist.RoomListDeclineInviteMenu
 import io.element.android.features.home.impl.roomlist.RoomListEvents
 import io.element.android.features.home.impl.roomlist.RoomListState
 import io.element.android.features.home.impl.search.RoomListSearchView
+import io.element.android.features.home.impl.spaces.HomeSpacesView
 import io.element.android.features.networkmonitor.api.ui.ConnectivityIndicatorContainer
 import io.element.android.libraries.androidutils.throttler.FirstThrottler
 import io.element.android.libraries.designsystem.preview.ElementPreview
@@ -61,7 +61,6 @@ import io.element.android.libraries.designsystem.theme.components.NavigationBarI
 import io.element.android.libraries.designsystem.theme.components.NavigationBarItem
 import io.element.android.libraries.designsystem.theme.components.NavigationBarText
 import io.element.android.libraries.designsystem.theme.components.Scaffold
-import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.utils.snackbar.SnackbarHost
 import io.element.android.libraries.designsystem.utils.snackbar.rememberSnackbarHostState
 import io.element.android.libraries.matrix.api.core.RoomId
@@ -262,19 +261,17 @@ private fun HomeScaffold(
                     )
                 }
                 HomeNavigationBarItem.Spaces -> {
-                    Box(
+                    HomeSpacesView(
                         modifier = Modifier
                             .fillMaxSize()
                             .padding(padding)
                             .consumeWindowInsets(padding)
-                    ) {
+                            .hazeSource(state = hazeState),
-                        Text(
+                        state = state.homeSpacesState,
-                            modifier = Modifier.align(Alignment.Center),
+                        onSpaceClick = { spaceId ->
-                            text = "Spaces are coming soon!",
+                            // TODO
-                            style = ElementTheme.typography.fontBodyLgRegular,
+                        }
-                            color = ElementTheme.colors.textPrimary,
+                    )
-                        )
-                    }
                 }
             }
         },

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

@@ -45,15 +45,13 @@ import io.element.android.features.home.impl.model.RoomSummaryDisplayType
 import io.element.android.features.home.impl.roomlist.RoomListEvents
 import io.element.android.libraries.core.extensions.orEmpty
 import io.element.android.libraries.designsystem.atomic.atoms.UnreadIndicatorAtom
+import io.element.android.libraries.designsystem.atomic.molecules.InviteButtonsRowMolecule
 import io.element.android.libraries.designsystem.components.avatar.Avatar
 import io.element.android.libraries.designsystem.components.avatar.AvatarType
 import io.element.android.libraries.designsystem.modifiers.onKeyboardContextMenuAction
 import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.PreviewsDayNight
-import io.element.android.libraries.designsystem.theme.components.Button
-import io.element.android.libraries.designsystem.theme.components.ButtonSize
 import io.element.android.libraries.designsystem.theme.components.Icon
-import io.element.android.libraries.designsystem.theme.components.OutlinedButton
 import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.theme.roomListRoomMessage
 import io.element.android.libraries.designsystem.theme.roomListRoomMessageDate
@@ -101,7 +99,7 @@ internal fun RoomSummaryRow(
                         )
                     }
                     Spacer(modifier = Modifier.height(12.dp))
-                    InviteButtonsRow(
+                    InviteButtonsRowMolecule(
                         onAcceptClick = {
                             eventSink(RoomListEvents.AcceptInvite(room))
                         },
@@ -346,31 +344,6 @@ private fun InviteNameAndIndicatorRow(
     }
 }
 
-@Composable
-private fun InviteButtonsRow(
-    onAcceptClick: () -> Unit,
-    onDeclineClick: () -> Unit,
-    modifier: Modifier = Modifier
-) {
-    Row(
-        modifier = modifier,
-        horizontalArrangement = spacedBy(12.dp)
-    ) {
-        OutlinedButton(
-            text = stringResource(CommonStrings.action_decline),
-            onClick = onDeclineClick,
-            size = ButtonSize.MediumLowPadding,
-            modifier = Modifier.weight(1f),
-        )
-        Button(
-            text = stringResource(CommonStrings.action_accept),
-            onClick = onAcceptClick,
-            size = ButtonSize.MediumLowPadding,
-            modifier = Modifier.weight(1f),
-        )
-    }
-}
-
 @Composable
 private fun OnGoingCallIcon(
     color: Color,

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/di/HomeSpacesModule.kt

@@ -0,0 +1,23 @@
+/*
+ * 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.features.home.impl.di
+
+import com.squareup.anvil.annotations.ContributesTo
+import dagger.Binds
+import dagger.Module
+import io.element.android.features.home.impl.spaces.HomeSpacesPresenter
+import io.element.android.features.home.impl.spaces.HomeSpacesState
+import io.element.android.libraries.architecture.Presenter
+import io.element.android.libraries.di.SessionScope
+
+@ContributesTo(SessionScope::class)
+@Module
+interface HomeSpacesModule {
+    @Binds
+    fun bindHomeSpacesPresenter(presenter: HomeSpacesPresenter): Presenter<HomeSpacesState>
+}

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/spaces/HomeSpaceItemView.kt

@@ -0,0 +1,194 @@
+/*
+ * 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.features.home.impl.spaces
+
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.layout.Arrangement.Absolute.spacedBy
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ColumnScope
+import androidx.compose.foundation.layout.IntrinsicSize
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.material3.ripple
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.pluralStringResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.tooling.preview.PreviewParameter
+import androidx.compose.ui.unit.dp
+import io.element.android.compound.theme.ElementTheme
+import io.element.android.compound.tokens.generated.CompoundIcons
+import io.element.android.libraries.designsystem.atomic.atoms.UnreadIndicatorAtom
+import io.element.android.libraries.designsystem.atomic.molecules.InviteButtonsRowMolecule
+import io.element.android.libraries.designsystem.components.avatar.Avatar
+import io.element.android.libraries.designsystem.components.avatar.AvatarSize
+import io.element.android.libraries.designsystem.components.avatar.AvatarType
+import io.element.android.libraries.designsystem.modifiers.onKeyboardContextMenuAction
+import io.element.android.libraries.designsystem.preview.ElementPreview
+import io.element.android.libraries.designsystem.preview.PreviewsDayNight
+import io.element.android.libraries.designsystem.theme.components.Icon
+import io.element.android.libraries.designsystem.theme.components.Text
+import io.element.android.libraries.designsystem.theme.unreadIndicator
+import io.element.android.libraries.matrix.api.room.CurrentUserMembership
+import io.element.android.libraries.matrix.api.spaces.SpaceRoom
+import io.element.android.libraries.matrix.ui.model.getAvatarData
+import io.element.android.libraries.ui.strings.CommonPlurals
+import io.element.android.libraries.ui.strings.CommonStrings
+
+@Composable
+internal fun HomeSpaceItemView(
+    spaceRoom: SpaceRoom,
+    showUnreadIndicator: Boolean,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    SpaceScaffoldRow(
+        modifier = modifier,
+        spaceRoom = spaceRoom,
+        onClick = onClick,
+        onLongClick = { },
+    ) {
+        NameAndIndicatorRow(
+            name = spaceRoom.name,
+            showIndicator = showUnreadIndicator,
+        )
+        Spacer(modifier = Modifier.height(1.dp))
+        if (!spaceRoom.worldReadable) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                verticalAlignment = Alignment.CenterVertically,
+            ) {
+                Icon(
+                    modifier = Modifier
+                        .size(16.dp)
+                        .padding(end = 4.dp),
+                    imageVector = CompoundIcons.LockSolid(),
+                    contentDescription = null,
+                    tint = ElementTheme.colors.iconTertiary,
+                )
+                Text(
+                    modifier = Modifier.weight(1f),
+                    style = ElementTheme.typography.fontBodyMdRegular,
+                    text = stringResource(CommonStrings.common_private_space),
+                    fontStyle = FontStyle.Italic.takeIf { spaceRoom.name == null },
+                    color = ElementTheme.colors.textSecondary,
+                    maxLines = 1,
+                    overflow = TextOverflow.Ellipsis
+                )
+            }
+            Spacer(modifier = Modifier.height(1.dp))
+        }
+        val spaceSummary = stringResource(
+            CommonStrings.screen_space_list_details,
+            pluralStringResource(CommonPlurals.common_rooms, spaceRoom.childrenCount, spaceRoom.childrenCount),
+            pluralStringResource(CommonPlurals.common_member_count, spaceRoom.numJoinedMembers, spaceRoom.numJoinedMembers),
+        )
+        Text(
+            modifier = Modifier.weight(1f),
+            style = ElementTheme.typography.fontBodyMdRegular,
+            text = spaceSummary,
+            fontStyle = FontStyle.Italic.takeIf { spaceRoom.name == null },
+            color = ElementTheme.colors.textSecondary,
+            maxLines = 1,
+            overflow = TextOverflow.Ellipsis
+        )
+        if (spaceRoom.state == CurrentUserMembership.INVITED) {
+            Spacer(modifier = Modifier.height(12.dp))
+            InviteButtonsRowMolecule(
+                onAcceptClick = {},
+                onDeclineClick = {},
+            )
+        }
+    }
+}
+
+@Composable
+fun NameAndIndicatorRow(
+    name: String?,
+    showIndicator: Boolean,
+    modifier: Modifier = Modifier,
+) {
+    Row(
+        modifier = modifier.fillMaxWidth(),
+        horizontalArrangement = spacedBy(16.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Text(
+            modifier = Modifier.weight(1f),
+            style = ElementTheme.typography.fontBodyLgMedium,
+            text = name ?: stringResource(id = CommonStrings.common_no_room_name),
+            fontStyle = FontStyle.Italic.takeIf { name == null },
+            color = ElementTheme.colors.textPrimary,
+            maxLines = 1,
+            overflow = TextOverflow.Ellipsis
+        )
+        if (showIndicator) {
+            UnreadIndicatorAtom(
+                color = ElementTheme.colors.unreadIndicator
+            )
+        }
+    }
+}
+
+@Composable
+private fun SpaceScaffoldRow(
+    spaceRoom: SpaceRoom,
+    onClick: () -> Unit,
+    onLongClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    hideAvatarImage: Boolean,
+    content: @Composable ColumnScope.() -> Unit
+) {
+    val clickModifier = Modifier
+        .combinedClickable(
+            onClick = onClick,
+            onLongClick = onLongClick,
+            onLongClickLabel = stringResource(CommonStrings.action_open_context_menu),
+            indication = ripple(),
+            interactionSource = remember { MutableInteractionSource() }
+        )
+        .onKeyboardContextMenuAction { onLongClick }
+    Row(
+        modifier = modifier
+            .fillMaxWidth()
+            .then(clickModifier)
+            .padding(horizontal = 16.dp, vertical = 8.dp)
+            .height(IntrinsicSize.Min),
+    ) {
+        Avatar(
+            avatarData = spaceRoom.getAvatarData(AvatarSize.SpaceListItem),
+            avatarType = AvatarType.Space(),
+            hideImage = hideAvatarImage,
+        )
+        Spacer(modifier = Modifier.width(16.dp))
+        Column(
+            modifier = Modifier.weight(1f),
+            content = content,
+        )
+    }
+}
+
+@PreviewsDayNight
+@Composable
+internal fun HomeSpaceItemViewPreview(@PreviewParameter(SpaceRoomProvider::class) spaceRoom: SpaceRoom) = ElementPreview {
+    HomeSpaceItemView(
+        spaceRoom = spaceRoom,
+        showUnreadIndicator = false,
+        onClick = {},
+    )
+}

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/spaces/HomeSpacesEvents.kt

@@ -0,0 +1,12 @@
+/*
+ * 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.features.home.impl.spaces
+
+sealed interface HomeSpacesEvents {
+
+}

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/spaces/HomeSpacesPresenter.kt

@@ -0,0 +1,44 @@
+/*
+ * 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.features.home.impl.spaces
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import io.element.android.features.invite.api.SeenInvitesStore
+import io.element.android.features.invite.api.seenSpaceIds
+import io.element.android.libraries.architecture.Presenter
+import io.element.android.libraries.matrix.api.MatrixClient
+import kotlinx.collections.immutable.persistentSetOf
+import kotlinx.collections.immutable.toPersistentSet
+import kotlinx.coroutines.flow.map
+import javax.inject.Inject
+
+class HomeSpacesPresenter @Inject constructor(
+    private val client: MatrixClient,
+    private val seenInvitesStore: SeenInvitesStore,
+) : Presenter<HomeSpacesState> {
+    @Composable
+    override fun present(): HomeSpacesState {
+        val spaceRooms by client.spaceService.spaceRooms.collectAsState(emptyList())
+        val seenSpaceInvites by remember {
+            seenInvitesStore.seenSpaceIds().map { it.toPersistentSet() }
+        }.collectAsState(persistentSetOf())
+
+        fun handleEvents(event: HomeSpacesEvents) {
+            //when (event) { }
+        }
+
+        return HomeSpacesState(
+            spaceRooms = spaceRooms,
+            seenSpaceInvites = seenSpaceInvites,
+            eventSink = ::handleEvents,
+        )
+    }
+}

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/spaces/HomeSpacesState.kt

@@ -0,0 +1,18 @@
+/*
+ * 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.features.home.impl.spaces
+
+import io.element.android.libraries.matrix.api.core.SpaceId
+import io.element.android.libraries.matrix.api.spaces.SpaceRoom
+import kotlinx.collections.immutable.ImmutableSet
+
+data class HomeSpacesState(
+    val spaceRooms: List<SpaceRoom>,
+    val seenSpaceInvites: ImmutableSet<SpaceId>,
+    val eventSink: (HomeSpacesEvents) -> Unit,
+)

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/spaces/HomeSpacesStateProvider.kt

@@ -0,0 +1,43 @@
+/*
+ * 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.features.home.impl.spaces
+
+import androidx.compose.ui.tooling.preview.PreviewParameterProvider
+import io.element.android.libraries.matrix.api.core.SpaceId
+import io.element.android.libraries.matrix.api.spaces.SpaceRoom
+import kotlinx.collections.immutable.toImmutableSet
+
+open class HomeSpacesStateProvider : PreviewParameterProvider<HomeSpacesState> {
+    override val values: Sequence<HomeSpacesState>
+        get() = sequenceOf(
+            aHomeSpacesState(
+                spaceRooms = SpaceRoomProvider().values.toList(),
+                seenSpaceInvites = setOf(
+                    SpaceId("!spaceId3:example.com"),
+                ).toImmutableSet(),
+            )
+        )
+}
+
+internal fun aHomeSpacesState(
+    spaceRooms: List<SpaceRoom> = aListOfSpaceRooms(),
+    seenSpaceInvites: Set<SpaceId> = emptySet(),
+    eventSink: (HomeSpacesEvents) -> Unit = {},
+) = HomeSpacesState(
+    spaceRooms = spaceRooms,
+    seenSpaceInvites = seenSpaceInvites.toImmutableSet(),
+    eventSink = eventSink,
+)
+
+fun aListOfSpaceRooms(): List<SpaceRoom> {
+    return listOf(
+        aSpaceRooms(),
+        aSpaceRooms(),
+        aSpaceRooms(),
+    )
+}

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/spaces/HomeSpacesView.kt

@@ -0,0 +1,50 @@
+/*
+ * 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.features.home.impl.spaces
+
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.PreviewParameter
+import io.element.android.libraries.designsystem.preview.ElementPreview
+import io.element.android.libraries.designsystem.preview.PreviewsDayNight
+import io.element.android.libraries.matrix.api.core.SpaceId
+import io.element.android.libraries.matrix.api.room.CurrentUserMembership
+
+@Composable
+fun HomeSpacesView(
+    state: HomeSpacesState,
+    onSpaceClick: (SpaceId) -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    LazyColumn(modifier) {
+        state.spaceRooms.forEach {
+            item(it.spaceId) {
+                HomeSpaceItemView(
+                    spaceRoom = it,
+                    showUnreadIndicator = it.state == CurrentUserMembership.INVITED && it.spaceId !in state.seenSpaceInvites,
+                    onClick = {
+                        onSpaceClick(it.spaceId)
+                    }
+                )
+            }
+        }
+    }
+}
+
+@PreviewsDayNight
+@Composable
+internal fun HomeSpacesViewPreview(
+    @PreviewParameter(HomeSpacesStateProvider::class) state: HomeSpacesState,
+) = ElementPreview {
+    HomeSpacesView(
+        state = state,
+        onSpaceClick = {},
+        modifier = Modifier,
+    )
+}

features/home/impl/src/main/kotlin/io/element/android/features/home/impl/spaces/SpaceRoomProvider.kt

@@ -0,0 +1,84 @@
+/*
+ * 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.features.home.impl.spaces
+
+import androidx.compose.ui.tooling.preview.PreviewParameterProvider
+import io.element.android.libraries.matrix.api.core.RoomAlias
+import io.element.android.libraries.matrix.api.core.SpaceId
+import io.element.android.libraries.matrix.api.room.CurrentUserMembership
+import io.element.android.libraries.matrix.api.room.RoomType
+import io.element.android.libraries.matrix.api.room.join.JoinRule
+import io.element.android.libraries.matrix.api.spaces.SpaceRoom
+import io.element.android.libraries.matrix.api.user.MatrixUser
+
+class SpaceRoomProvider : PreviewParameterProvider<SpaceRoom> {
+    override val values: Sequence<SpaceRoom> = sequenceOf(
+        aSpaceRooms(),
+        aSpaceRooms(
+            numJoinedMembers = 5,
+            childrenCount = 10,
+            worldReadable = true,
+            spaceId = SpaceId("!spaceId0:example.com"),
+        ),
+        aSpaceRooms(
+            numJoinedMembers = 5,
+            childrenCount = 10,
+            worldReadable = true,
+            avatarUrl = "anUrl",
+            spaceId = SpaceId("!spaceId1:example.com"),
+        ),
+        aSpaceRooms(
+            name = null,
+            numJoinedMembers = 5,
+            childrenCount = 10,
+            worldReadable = true,
+            avatarUrl = "anUrl",
+            spaceId = SpaceId("!spaceId2:example.com"),
+            state = CurrentUserMembership.INVITED,
+        ),
+        aSpaceRooms(
+            name = null,
+            numJoinedMembers = 5,
+            childrenCount = 10,
+            worldReadable = true,
+            avatarUrl = "anUrl",
+            spaceId = SpaceId("!spaceId3:example.com"),
+            state = CurrentUserMembership.INVITED,
+        ),
+    )
+}
+
+fun aSpaceRooms(
+    name: String? = "Space name",
+    avatarUrl: String? = null,
+    canonicalAlias: RoomAlias? = null,
+    childrenCount: Int = 0,
+    guestCanJoin: Boolean = false,
+    heroes: List<MatrixUser> = emptyList(),
+    joinRule: JoinRule? = null,
+    numJoinedMembers: Int = 0,
+    spaceId: SpaceId = SpaceId("!spaceId:example.com"),
+    roomType: RoomType = RoomType.Space,
+    state: CurrentUserMembership? = null,
+    topic: String? = null,
+    worldReadable: Boolean = false,
+) = SpaceRoom(
+    name = name,
+    avatarUrl = avatarUrl,
+    canonicalAlias = canonicalAlias,
+    childrenCount = childrenCount,
+    guestCanJoin = guestCanJoin,
+    heroes = heroes,
+    joinRule = joinRule,
+    numJoinedMembers = numJoinedMembers,
+    spaceId = spaceId,
+    roomType = roomType,
+    state = state,
+    topic = topic,
+    worldReadable = worldReadable
+)

features/invite/api/src/main/kotlin/io/element/android/features/invite/api/SeenInvitesStore.kt

@@ -8,7 +8,10 @@
 package io.element.android.features.invite.api
 
 import io.element.android.libraries.matrix.api.core.RoomId
+import io.element.android.libraries.matrix.api.core.SpaceId
+import io.element.android.libraries.matrix.api.core.toSpaceId
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
 
 interface SeenInvitesStore {
     /**
@@ -35,3 +38,9 @@ interface SeenInvitesStore {
      */
     suspend fun clear()
 }
+
+fun SeenInvitesStore.seenSpaceIds(): Flow<Set<SpaceId>> {
+    return seenRoomIds().map { roomIds ->
+        roomIds.map { it.toSpaceId() }.toSet()
+    }
+}

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/atomic/molecules/InviteButtonsRowMolecule.kt

@@ -0,0 +1,47 @@
+/*
+ * 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.atomic.molecules
+
+import androidx.compose.foundation.layout.Arrangement.Absolute.spacedBy
+import androidx.compose.foundation.layout.Row
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import io.element.android.libraries.designsystem.theme.components.Button
+import io.element.android.libraries.designsystem.theme.components.ButtonSize
+import io.element.android.libraries.designsystem.theme.components.OutlinedButton
+import io.element.android.libraries.ui.strings.CommonStrings
+
+@Composable
+fun InviteButtonsRowMolecule(
+    onAcceptClick: () -> Unit,
+    onDeclineClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    declineText: String = stringResource(CommonStrings.action_decline),
+    acceptText: String = stringResource(CommonStrings.action_accept),
+) {
+    Row(
+        modifier = modifier,
+        horizontalArrangement = spacedBy(12.dp)
+    ) {
+        OutlinedButton(
+            text = declineText,
+            onClick = onDeclineClick,
+            size = ButtonSize.MediumLowPadding,
+            modifier = Modifier.weight(1f),
+        )
+        Button(
+            text = acceptText,
+            onClick = onAcceptClick,
+            size = ButtonSize.MediumLowPadding,
+            modifier = Modifier.weight(1f),
+        )
+    }
+}
+

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/components/avatar/AvatarSize.kt

@@ -17,6 +17,8 @@ enum class AvatarSize(val dp: Dp) {
     RoomHeader(96.dp),
     RoomListItem(52.dp),
 
+    SpaceListItem(52.dp),
+
     RoomSelectRoomListItem(36.dp),
 
     UserPreference(56.dp),

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/MatrixClient.kt

@@ -31,6 +31,7 @@ import io.element.android.libraries.matrix.api.room.RoomMembershipObserver
 import io.element.android.libraries.matrix.api.room.alias.ResolvedRoomAlias
 import io.element.android.libraries.matrix.api.roomdirectory.RoomDirectoryService
 import io.element.android.libraries.matrix.api.roomlist.RoomListService
+import io.element.android.libraries.matrix.api.spaces.SpaceService
 import io.element.android.libraries.matrix.api.sync.SlidingSyncVersion
 import io.element.android.libraries.matrix.api.sync.SyncService
 import io.element.android.libraries.matrix.api.user.MatrixSearchUserResults
@@ -47,6 +48,7 @@ interface MatrixClient {
     val deviceId: DeviceId
     val userProfile: StateFlow<MatrixUser>
     val roomListService: RoomListService
+    val spaceService: SpaceService
     val mediaLoader: MatrixMediaLoader
     val sessionCoroutineScope: CoroutineScope
     val ignoredUsersFlow: StateFlow<ImmutableList<UserId>>

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/core/RoomId.kt

@@ -20,3 +20,5 @@ value class RoomId(val value: String) : Serializable {
 
     override fun toString(): String = value
 }
+
+fun RoomId.toSpaceId(): SpaceId = SpaceId(this.value)

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/spaces/SpaceRoom.kt

@@ -0,0 +1,31 @@
+/*
+ * 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.matrix.api.spaces
+
+import io.element.android.libraries.matrix.api.core.RoomAlias
+import io.element.android.libraries.matrix.api.core.SpaceId
+import io.element.android.libraries.matrix.api.room.CurrentUserMembership
+import io.element.android.libraries.matrix.api.room.RoomType
+import io.element.android.libraries.matrix.api.room.join.JoinRule
+import io.element.android.libraries.matrix.api.user.MatrixUser
+
+data class SpaceRoom(
+    val name: String?,
+    val avatarUrl: String?,
+    val canonicalAlias: RoomAlias?,
+    val childrenCount: Int,
+    val guestCanJoin: Boolean,
+    val heroes: List<MatrixUser>,
+    val joinRule: JoinRule?,
+    val numJoinedMembers: Int,
+    val spaceId: SpaceId,
+    val roomType: RoomType,
+    val state: CurrentUserMembership?,
+    val topic: String?,
+    val worldReadable: Boolean,
+)

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/spaces/SpaceService.kt

@@ -0,0 +1,15 @@
+/*
+ * 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.matrix.api.spaces
+
+import kotlinx.coroutines.flow.SharedFlow
+
+interface SpaceService {
+    val spaceRooms: SharedFlow<List<SpaceRoom>>
+    suspend fun joinedSpaces(): Result<List<SpaceRoom>>
+}

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/RustMatrixClient.kt

@@ -42,6 +42,7 @@ import io.element.android.libraries.matrix.api.room.join.JoinRule
 import io.element.android.libraries.matrix.api.roomdirectory.RoomDirectoryService
 import io.element.android.libraries.matrix.api.roomdirectory.RoomVisibility
 import io.element.android.libraries.matrix.api.roomlist.RoomListService
+import io.element.android.libraries.matrix.api.spaces.SpaceService
 import io.element.android.libraries.matrix.api.sync.SlidingSyncVersion
 import io.element.android.libraries.matrix.api.sync.SyncService
 import io.element.android.libraries.matrix.api.sync.SyncState
@@ -71,6 +72,7 @@ import io.element.android.libraries.matrix.impl.roomdirectory.map
 import io.element.android.libraries.matrix.impl.roomlist.RoomListFactory
 import io.element.android.libraries.matrix.impl.roomlist.RustRoomListService
 import io.element.android.libraries.matrix.impl.roomlist.roomOrNull
+import io.element.android.libraries.matrix.impl.spaces.RustSpaceService
 import io.element.android.libraries.matrix.impl.sync.RustSyncService
 import io.element.android.libraries.matrix.impl.sync.map
 import io.element.android.libraries.matrix.impl.usersearch.UserProfileMapper
@@ -143,6 +145,7 @@ class RustMatrixClient(
     private val sessionDispatcher = dispatchers.io.limitedParallelism(64)
 
     private val innerRoomListService = innerSyncService.roomListService()
+    private val innerSpaceService = innerClient.spaceService()
 
     private val rustSyncService = RustSyncService(
         inner = innerSyncService,
@@ -184,6 +187,17 @@ class RustMatrixClient(
         roomSyncSubscriber = roomSyncSubscriber,
     )
 
+    override val spaceService: SpaceService = RustSpaceService(
+        innerSpaceService = innerSpaceService,
+        sessionCoroutineScope = sessionCoroutineScope,
+        sessionDispatcher = sessionDispatcher,
+        //roomListFactory = RoomListFactory(
+        //    innerRoomListService = innerRoomListService,
+        //    sessionCoroutineScope = sessionCoroutineScope,
+        //),
+        //roomSyncSubscriber = roomSyncSubscriber,
+    )
+
     private val verificationService = RustSessionVerificationService(
         client = innerClient,
         isSyncServiceReady = rustSyncService.syncState.map { it == SyncState.Running },
@@ -540,6 +554,7 @@ class RustMatrixClient(
 
         sessionDelegate.clearCurrentClient()
         innerRoomListService.close()
+        innerSpaceService.close()
         notificationService.close()
         encryptionService.close()
         innerClient.close()

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/spaces/RustSpaceService.kt

@@ -0,0 +1,145 @@
+/*
+ * 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.matrix.impl.spaces
+
+import io.element.android.libraries.core.extensions.runCatchingExceptions
+import io.element.android.libraries.matrix.api.spaces.SpaceRoom
+import io.element.android.libraries.matrix.api.spaces.SpaceService
+import io.element.android.libraries.matrix.impl.util.cancelAndDestroy
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.channels.trySendBlocking
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.buffer
+import kotlinx.coroutines.flow.callbackFlow
+import kotlinx.coroutines.flow.catch
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.coroutines.withContext
+import org.matrix.rustcomponents.sdk.SpaceListUpdate
+import org.matrix.rustcomponents.sdk.SpaceServiceInterface
+import org.matrix.rustcomponents.sdk.SpaceServiceJoinedSpacesListener
+import timber.log.Timber
+import org.matrix.rustcomponents.sdk.SpaceService as ClientSpaceService
+
+class RustSpaceService(
+    private val innerSpaceService: ClientSpaceService,
+    private val sessionCoroutineScope: CoroutineScope,
+    private val sessionDispatcher: CoroutineDispatcher,
+) : SpaceService {
+    private val mapper = SpaceRoomMapper()
+    private val mutex = Mutex()
+
+    override val spaceRooms = MutableSharedFlow<List<SpaceRoom>>(replay = 1, extraBufferCapacity = 1)
+
+    override suspend fun joinedSpaces(): Result<List<SpaceRoom>> = withContext(sessionDispatcher) {
+        runCatchingExceptions {
+            innerSpaceService.joinedSpaces()
+                .map {
+                    it.let(mapper::map)
+                }
+        }
+    }
+
+    // override suspend fun spaceRoomList(spaceId: SpaceId): Result<List<SpaceRoom>> = withContext(sessionDispatcher) {
+    //     runCatchingExceptions {
+    //         innerSpaceService.spaceRoomList(spaceId.value)
+    //     }
+    // }
+
+    init {
+        innerSpaceService
+            .spaceDiffFlow()
+            .onEach {
+                handeUpdate(it)
+            }
+            .launchIn(sessionCoroutineScope)
+    }
+
+    private suspend fun handeUpdate(spaceListUpdates: List<SpaceListUpdate>) {
+        mutex.withLock {
+            val current = if (spaceRooms.replayCache.isNotEmpty()) {
+                spaceRooms.first().toMutableList()
+            } else {
+                mutableListOf()
+            }
+            spaceListUpdates.forEach { update ->
+                current.applyUpdate(update)
+            }
+            spaceRooms.emit(current)
+        }
+    }
+
+    private fun MutableList<SpaceRoom>.applyUpdate(update: SpaceListUpdate) {
+        when (update) {
+            is SpaceListUpdate.Append -> {
+                val newSpaces = update.values.map { it ->
+                    it.let(mapper::map)
+                }
+                addAll(newSpaces)
+            }
+            SpaceListUpdate.Clear -> clear()
+            is SpaceListUpdate.Insert -> {
+                val newSpace = mapper.map(update.value)
+                add(update.index.toInt(), newSpace)
+            }
+            SpaceListUpdate.PopBack -> {
+                removeAt(lastIndex)
+            }
+            SpaceListUpdate.PopFront -> {
+                removeAt(0)
+            }
+            is SpaceListUpdate.PushBack -> {
+                val newSpace = mapper.map(update.value)
+                add(newSpace)
+            }
+            is SpaceListUpdate.PushFront -> {
+                val newSpace = mapper.map(update.value)
+                add(0, newSpace)
+            }
+            is SpaceListUpdate.Remove -> {
+                removeAt(update.index.toInt())
+            }
+            is SpaceListUpdate.Reset -> {
+                clear()
+                val newSpaces = update.values.map(mapper::map)
+                addAll(newSpaces)
+            }
+            is SpaceListUpdate.Set -> {
+                val newSpace = mapper.map(update.value)
+                this[update.index.toInt()] = newSpace
+            }
+            is SpaceListUpdate.Truncate -> {
+                subList(update.length.toInt(), size).clear()
+            }
+        }
+    }
+}
+
+internal fun SpaceServiceInterface.spaceDiffFlow(): Flow<List<SpaceListUpdate>> =
+    callbackFlow {
+        val listener = object : SpaceServiceJoinedSpacesListener {
+            override fun onUpdate(roomUpdates: List<SpaceListUpdate>) {
+                trySendBlocking(roomUpdates)
+            }
+        }
+        Timber.d("Open spaceDiffFlow for SpaceServiceInterface ${this@spaceDiffFlow}")
+        val taskHandle = subscribeToJoinedSpaces(listener)
+        awaitClose {
+            Timber.d("Close spaceDiffFlow for SpaceServiceInterface ${this@spaceDiffFlow}")
+            taskHandle.cancelAndDestroy()
+        }
+    }.catch {
+        Timber.d(it, "spaceDiffFlow() failed")
+    }.buffer(Channel.UNLIMITED)

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/spaces/SpaceRoomMapper.kt

@@ -0,0 +1,36 @@
+/*
+ * 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.matrix.impl.spaces
+
+import io.element.android.libraries.core.bool.orFalse
+import io.element.android.libraries.matrix.api.core.RoomAlias
+import io.element.android.libraries.matrix.api.core.SpaceId
+import io.element.android.libraries.matrix.api.spaces.SpaceRoom
+import io.element.android.libraries.matrix.impl.room.join.map
+import io.element.android.libraries.matrix.impl.room.map
+import org.matrix.rustcomponents.sdk.SpaceRoom as RustSpaceRoom
+
+class SpaceRoomMapper {
+    fun map(spaceRoom: RustSpaceRoom): SpaceRoom {
+        return SpaceRoom(
+            avatarUrl = spaceRoom.avatarUrl,
+            canonicalAlias = spaceRoom.canonicalAlias?.let(::RoomAlias),
+            childrenCount = spaceRoom.childrenCount.toInt(),
+            guestCanJoin = spaceRoom.guestCanJoin,
+            heroes = spaceRoom.heroes.orEmpty().map { it.map() },
+            joinRule = spaceRoom.joinRule?.map(),
+            name = spaceRoom.name,
+            numJoinedMembers = spaceRoom.numJoinedMembers.toInt(),
+            spaceId = spaceRoom.roomId.let(::SpaceId),
+            roomType = spaceRoom.roomType.map(),
+            state = spaceRoom.state?.map(),
+            topic = spaceRoom.topic,
+            worldReadable = spaceRoom.worldReadable.orFalse(),
+        )
+    }
+}

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

@@ -0,0 +1,19 @@
+/*
+ * 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.matrix.ui.model
+
+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.spaces.SpaceRoom
+
+fun SpaceRoom.getAvatarData(size: AvatarSize) = AvatarData(
+    id = spaceId.value,
+    name = name,
+    url = avatarUrl,
+    size = size,
+)