Room List Filters Empty State View (#2522)

ElementX/Sources/Generated/Strings.swift

@@ -126,6 +126,8 @@ internal enum L10n {
   internal static var actionForgotPassword: String { return L10n.tr("Localizable", "action_forgot_password") }
   /// Forward
   internal static var actionForward: String { return L10n.tr("Localizable", "action_forward") }
+  /// Go back
+  internal static var actionGoBack: String { return L10n.tr("Localizable", "action_go_back") }
   /// Invite
   internal static var actionInvite: String { return L10n.tr("Localizable", "action_invite") }
   /// Invite people
@@ -378,6 +380,8 @@ internal enum L10n {
   internal static var commonRoomName: String { return L10n.tr("Localizable", "common_room_name") }
   /// e.g. your project name
   internal static var commonRoomNamePlaceholder: String { return L10n.tr("Localizable", "common_room_name_placeholder") }
+  /// Saved changes
+  internal static var commonSavedChanges: String { return L10n.tr("Localizable", "common_saved_changes") }
   /// Saving
   internal static var commonSaving: String { return L10n.tr("Localizable", "common_saving") }
   /// Screen lock
@@ -494,6 +498,10 @@ internal enum L10n {
   internal static var dialogTitleSuccess: String { return L10n.tr("Localizable", "dialog_title_success") }
   /// Warning
   internal static var dialogTitleWarning: String { return L10n.tr("Localizable", "dialog_title_warning") }
+  /// Your changes won’t be saved
+  internal static var dialogUnsavedChangesDescriptionIos: String { return L10n.tr("Localizable", "dialog_unsaved_changes_description_ios") }
+  /// Save changes?
+  internal static var dialogUnsavedChangesTitle: String { return L10n.tr("Localizable", "dialog_unsaved_changes_title") }
   /// Activities
   internal static var emojiPickerCategoryActivity: String { return L10n.tr("Localizable", "emoji_picker_category_activity") }
   /// Flags
@@ -1251,6 +1259,10 @@ internal enum L10n {
   internal static var screenRoomChangeRoleConfirmDemoteSelfTitle: String { return L10n.tr("Localizable", "screen_room_change_role_confirm_demote_self_title") }
   /// Edit Moderators
   internal static var screenRoomChangeRoleModeratorsTitle: String { return L10n.tr("Localizable", "screen_room_change_role_moderators_title") }
+  /// You have unsaved changes.
+  internal static var screenRoomChangeRoleUnsavedChangesDescription: String { return L10n.tr("Localizable", "screen_room_change_role_unsaved_changes_description") }
+  /// Save changes?
+  internal static var screenRoomChangeRoleUnsavedChangesTitle: String { return L10n.tr("Localizable", "screen_room_change_role_unsaved_changes_title") }
   /// Add topic
   internal static var screenRoomDetailsAddTopicTitle: String { return L10n.tr("Localizable", "screen_room_details_add_topic_title") }
   /// Already a member
@@ -1419,6 +1431,12 @@ internal enum L10n {
   internal static var screenRoomRetrySendMenuTitle: String { return L10n.tr("Localizable", "screen_room_retry_send_menu_title") }
   /// Admins
   internal static var screenRoomRolesAndPermissionsAdmins: String { return L10n.tr("Localizable", "screen_room_roles_and_permissions_admins") }
+  /// Change my role
+  internal static var screenRoomRolesAndPermissionsChangeMyRole: String { return L10n.tr("Localizable", "screen_room_roles_and_permissions_change_my_role") }
+  /// Demote to member
+  internal static var screenRoomRolesAndPermissionsChangeRoleDemoteToMember: String { return L10n.tr("Localizable", "screen_room_roles_and_permissions_change_role_demote_to_member") }
+  /// Demote to moderator
+  internal static var screenRoomRolesAndPermissionsChangeRoleDemoteToModerator: String { return L10n.tr("Localizable", "screen_room_roles_and_permissions_change_role_demote_to_moderator") }
   /// Member moderation
   internal static var screenRoomRolesAndPermissionsMemberModeration: String { return L10n.tr("Localizable", "screen_room_roles_and_permissions_member_moderation") }
   /// Messages and content
@@ -1473,14 +1491,30 @@ internal enum L10n {
   internal static var screenRoomlistEmptyTitle: String { return L10n.tr("Localizable", "screen_roomlist_empty_title") }
   /// Favourites
   internal static var screenRoomlistFilterFavourites: String { return L10n.tr("Localizable", "screen_roomlist_filter_favourites") }
+  /// You can add a chat to your favourites in the chat settings.
+  /// For now, you can deselect filters in order to see your other chats
+  internal static var screenRoomlistFilterFavouritesEmptyStateSubtitle: String { return L10n.tr("Localizable", "screen_roomlist_filter_favourites_empty_state_subtitle") }
+  /// You don’t have favourite chats yet
+  internal static var screenRoomlistFilterFavouritesEmptyStateTitle: String { return L10n.tr("Localizable", "screen_roomlist_filter_favourites_empty_state_title") }
   /// Low Priority
   internal static var screenRoomlistFilterLowPriority: String { return L10n.tr("Localizable", "screen_roomlist_filter_low_priority") }
+  /// You can deselect filters in order to see your other chats
+  internal static var screenRoomlistFilterMixedEmptyStateSubtitle: String { return L10n.tr("Localizable", "screen_roomlist_filter_mixed_empty_state_subtitle") }
+  /// You don’t have chats for this selection
+  internal static var screenRoomlistFilterMixedEmptyStateTitle: String { return L10n.tr("Localizable", "screen_roomlist_filter_mixed_empty_state_title") }
   /// People
   internal static var screenRoomlistFilterPeople: String { return L10n.tr("Localizable", "screen_roomlist_filter_people") }
+  /// You don’t have any DMs yet
+  internal static var screenRoomlistFilterPeopleEmptyStateTitle: String { return L10n.tr("Localizable", "screen_roomlist_filter_people_empty_state_title") }
   /// Rooms
   internal static var screenRoomlistFilterRooms: String { return L10n.tr("Localizable", "screen_roomlist_filter_rooms") }
+  /// You’re not in any room yet
+  internal static var screenRoomlistFilterRoomsEmptyStateTitle: String { return L10n.tr("Localizable", "screen_roomlist_filter_rooms_empty_state_title") }
   /// Unreads
   internal static var screenRoomlistFilterUnreads: String { return L10n.tr("Localizable", "screen_roomlist_filter_unreads") }
+  /// Congrats!
+  /// You don’t have any unread messages!
+  internal static var screenRoomlistFilterUnreadsEmptyStateTitle: String { return L10n.tr("Localizable", "screen_roomlist_filter_unreads_empty_state_title") }
   /// Chats
   internal static var screenRoomlistMainSpaceTitle: String { return L10n.tr("Localizable", "screen_roomlist_main_space_title") }
   /// Mark as read

ElementX/Sources/Screens/HomeScreen/HomeScreenModels.swift

@@ -118,6 +118,10 @@ struct HomeScreenViewState: BindableState {
     var shouldHideRoomList: Bool {
         bindings.isSearchFieldFocused && bindings.searchQuery.isEmpty
     }
+    
+    var shouldShowEmptyFilterState: Bool {
+        shouldShowFilters && bindings.filtersState.isFiltering && visibleRooms.isEmpty
+    }
 }
 
 struct HomeScreenViewStateBindings {

ElementX/Sources/Screens/HomeScreen/View/Filters/RoomListFiltersEmptyStateView.swift

@@ -0,0 +1,71 @@
+//
+// Copyright 2024 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.
+//
+
+import SwiftUI
+
+struct RoomListFiltersEmptyStateView: View {
+    let state: RoomListFiltersState
+    
+    private var emptyStateTitle: String {
+        if state.activeFilters.count == 1 {
+            switch state.activeFilters[0] {
+            case .unreads:
+                return L10n.screenRoomlistFilterUnreadsEmptyStateTitle
+            case .people:
+                return L10n.screenRoomlistFilterPeopleEmptyStateTitle
+            case .rooms:
+                return L10n.screenRoomlistFilterRoomsEmptyStateTitle
+            case .favourites:
+                return L10n.screenRoomlistFilterFavouritesEmptyStateTitle
+            }
+        }
+        return L10n.screenRoomlistFilterMixedEmptyStateTitle
+    }
+    
+    private var emptyStateSubtitle: String {
+        if state.activeFilters.first == .favourites {
+            return L10n.screenRoomlistFilterFavouritesEmptyStateSubtitle
+        }
+        return L10n.screenRoomlistFilterMixedEmptyStateSubtitle
+    }
+
+    var body: some View {
+        VStack(spacing: 24) {
+            Text(emptyStateTitle)
+                .multilineTextAlignment(.center)
+                .font(.compound.headingSMSemibold)
+                .foregroundColor(.compound.textPrimary)
+            
+            Text(emptyStateSubtitle)
+                .multilineTextAlignment(.center)
+                .font(.compound.bodyMD)
+                .foregroundColor(.compound.textSecondary)
+        }
+        .padding(.horizontal, 60)
+    }
+}
+
+struct RoomListFiltersEmptyStateView_Previews: PreviewProvider, TestablePreview {
+    static var previews: some View {
+        VStack(spacing: 24) {
+            ForEach(RoomListFilter.allCases) { filter in
+                RoomListFiltersEmptyStateView(state: .init(activeFilters: [filter]))
+            }
+            RoomListFiltersEmptyStateView(state: .init(activeFilters: [.people, .favourites]))
+        }
+        .previewLayout(.sizeThatFits)
+    }
+}

ElementX/Sources/Screens/HomeScreen/View/HomeScreenContent.swift

@@ -20,6 +20,7 @@ struct HomeScreenContent: View {
     @Environment(\.verticalSizeClass) private var verticalSizeClass
     
     @ObservedObject var context: HomeScreenViewModel.Context
+    @State private var topSectionFrame: CGRect = .zero
     let scrollViewAdapter: ScrollViewAdapter
     
     var body: some View {
@@ -56,9 +57,15 @@ struct HomeScreenContent: View {
                         // Showing empty views in pinned headers makes the room list spasm when reaching the top
                         LazyVStack(spacing: 0, pinnedViews: [.sectionHeaders]) {
                             Section {
-                                HomeScreenRoomList(context: context)
+                                if context.viewState.shouldShowEmptyFilterState {
+                                    RoomListFiltersEmptyStateView(state: context.filtersState)
+                                        .frame(height: geometry.size.height - topSectionFrame.height)
+                                } else {
+                                    HomeScreenRoomList(context: context)
+                                }
                             } header: {
                                 topSection
+                                    .readFrame($topSectionFrame)
                             }
                         }
                         .searchable(text: $context.searchQuery)