Move ComposerToolbar view required dependencies to the view model and read them, similarly to the other views, through the context's view state.

ElementX/Sources/Screens/RoomScreen/ComposerToolbar/ComposerToolbarModels.swift

@@ -65,6 +65,8 @@ enum ComposerAttachmentType {
 }
 
 struct ComposerToolbarViewState: BindableState {
+    let wysiwygViewModel: WysiwygComposerViewModel
+    
     var composerMode: ComposerMode = .default
     var composerEmpty = true
     /// Could be false if sending is disabled in the room
@@ -76,6 +78,8 @@ struct ComposerToolbarViewState: BindableState {
     var isRoomEncrypted: Bool
     var isLocationSharingEnabled: Bool
     
+    var keyCommands: [WysiwygKeyCommand] = []
+    
     var bindings: ComposerToolbarViewStateBindings
 
     var isUploading: Bool {

ElementX/Sources/Screens/RoomScreen/ComposerToolbar/ComposerToolbarViewModel.swift

@@ -63,13 +63,20 @@ final class ComposerToolbarViewModel: ComposerToolbarViewModelType, ComposerTool
         mentionBuilder = MentionBuilder()
         attributedStringBuilder = AttributedStringBuilder(cacheKey: "Composer", mentionBuilder: mentionBuilder)
         
-        super.init(initialViewState: ComposerToolbarViewState(audioPlayerState: .init(id: .recorderPreview, title: L10n.commonVoiceMessage, duration: 0),
+        super.init(initialViewState: ComposerToolbarViewState(wysiwygViewModel: wysiwygViewModel,
+                                                              audioPlayerState: .init(id: .recorderPreview, title: L10n.commonVoiceMessage, duration: 0),
                                                               audioRecorderState: .init(),
                                                               isRoomEncrypted: roomProxy.infoPublisher.value.isEncrypted,
                                                               isLocationSharingEnabled: appSettings.mapTilerConfiguration.isEnabled,
                                                               bindings: .init()),
                    mediaProvider: mediaProvider)
         
+        state.keyCommands = [
+            .enter { [weak self] in
+                self?.process(viewAction: .sendMessage)
+            }
+        ]
+        
         roomProxy.infoPublisher
             .map(\.isEncrypted)
             .receive(on: DispatchQueue.main)
@@ -100,6 +107,13 @@ final class ComposerToolbarViewModel: ComposerToolbarViewModelType, ComposerTool
             }
             .store(in: &cancellables)
         
+        // Needs to be observable or the placeholder and the dictation state will not be managed correctly.
+        wysiwygViewModel.objectWillChange
+            .sink { [weak self] _ in
+                self?.context.objectWillChange.send()
+            }
+            .store(in: &cancellables)
+        
         context.$viewState
             .map(\.bindings.plainComposerText)
             .removeDuplicates()
@@ -269,14 +283,6 @@ final class ComposerToolbarViewModel: ComposerToolbarViewModelType, ComposerTool
         handleSaveDraft(isVolatile: false)
     }
     
-    var keyCommands: [WysiwygKeyCommand] {
-        [
-            .enter { [weak self] in
-                self?.process(viewAction: .sendMessage)
-            }
-        ]
-    }
-
     // MARK: - Private
     
     private func handleLoadDraft(_ draft: ComposerDraftProxy) {

ElementX/Sources/Screens/RoomScreen/ComposerToolbar/ComposerToolbarViewModelProtocol.swift

@@ -13,7 +13,6 @@ import WysiwygComposer
 protocol ComposerToolbarViewModelProtocol {
     var actions: AnyPublisher<ComposerToolbarViewModelAction, Never> { get }
     var context: ComposerToolbarViewModelType.Context { get }
-    var keyCommands: [WysiwygKeyCommand] { get }
 
     func process(timelineAction: TimelineComposerAction)
     func loadDraft() async

ElementX/Sources/Screens/RoomScreen/ComposerToolbar/View/ComposerToolbar.swift

@@ -13,12 +13,6 @@ import WysiwygComposer
 
 struct ComposerToolbar: View {
     @ObservedObject var context: ComposerToolbarViewModel.Context
-    
-    // Needs to be observable or the placeholder and the dictation state are not managed correctly.
-    @ObservedObject var wysiwygViewModel: WysiwygComposerViewModel
-    
-    let keyCommands: [WysiwygKeyCommand]
-    
     @FocusState private var composerFocused: Bool
     @State private var frame: CGRect = .zero
     @Environment(\.verticalSizeClass) private var verticalSizeClass
@@ -249,9 +243,9 @@ struct ComposerToolbar: View {
     private var composerView: WysiwygComposerView {
         WysiwygComposerView(placeholder: placeholder,
                             placeholderColor: .compound.textSecondary,
-                            viewModel: wysiwygViewModel,
+                            viewModel: context.viewState.wysiwygViewModel,
                             itemProviderHelper: ItemProviderHelper(),
-                            keyCommands: keyCommands) { provider in
+                            keyCommands: context.viewState.keyCommands) { provider in
             context.send(viewAction: .handlePasteOrDrop(provider: provider))
         }
     }
@@ -343,9 +337,7 @@ struct ComposerToolbar_Previews: PreviewProvider, TestablePreview {
         // Putting them is VStack allows the completion suggestion preview to work properly in tests
         VStack(spacing: 8) {
             // The mock functon can't be used in this context because it does not hold a reference to the view model, losing the combine subscriptions
-            ComposerToolbar(context: composerViewModel.context,
+            ComposerToolbar(context: composerViewModel.context)
-                            wysiwygViewModel: wysiwygViewModel,
-                            keyCommands: [])
         }
         .previewDisplayName("With Suggestions")
         
@@ -386,9 +378,7 @@ extension ComposerToolbar {
             model.state.composerEmpty = focused
             return model
         }
-        return ComposerToolbar(context: composerViewModel.context,
+        return ComposerToolbar(context: composerViewModel.context)
-                               wysiwygViewModel: wysiwygViewModel,
-                               keyCommands: [])
     }
     
     static func textWithVoiceMessage(focused: Bool = true) -> ComposerToolbar {
@@ -405,9 +395,7 @@ extension ComposerToolbar {
             model.state.composerEmpty = focused
             return model
         }
-        return ComposerToolbar(context: composerViewModel.context,
+        return ComposerToolbar(context: composerViewModel.context)
-                               wysiwygViewModel: wysiwygViewModel,
-                               keyCommands: [])
     }
     
     static func voiceMessageRecordingMock() -> ComposerToolbar {
@@ -424,9 +412,7 @@ extension ComposerToolbar {
             model.state.composerMode = .recordVoiceMessage(state: AudioRecorderState())
             return model
         }
-        return ComposerToolbar(context: composerViewModel.context,
+        return ComposerToolbar(context: composerViewModel.context)
-                               wysiwygViewModel: wysiwygViewModel,
-                               keyCommands: [])
     }
     
     static func voiceMessagePreviewMock(uploading: Bool) -> ComposerToolbar {
@@ -448,9 +434,7 @@ extension ComposerToolbar {
                                                             isUploading: uploading)
             return model
         }
-        return ComposerToolbar(context: composerViewModel.context,
+        return ComposerToolbar(context: composerViewModel.context)
-                               wysiwygViewModel: wysiwygViewModel,
-                               keyCommands: [])
     }
     
     static func replyLoadingPreviewMock(isLoading: Bool) -> ComposerToolbar {
@@ -473,9 +457,7 @@ extension ComposerToolbar {
                                              eventID: "", eventContent: .message(.text(.init(body: "Hello World!")))), isThread: false)
             return model
         }
-        return ComposerToolbar(context: composerViewModel.context,
+        return ComposerToolbar(context: composerViewModel.context)
-                               wysiwygViewModel: wysiwygViewModel,
-                               keyCommands: [])
     }
     
     static func disabledPreviewMock() -> ComposerToolbar {
@@ -492,8 +474,6 @@ extension ComposerToolbar {
             model.state.canSend = false
             return model
         }
-        return ComposerToolbar(context: composerViewModel.context,
+        return ComposerToolbar(context: composerViewModel.context)
-                               wysiwygViewModel: wysiwygViewModel,
-                               keyCommands: [])
     }
 }

ElementX/Sources/Screens/RoomScreen/RoomScreenCoordinator.swift

@@ -52,7 +52,6 @@ final class RoomScreenCoordinator: CoordinatorProtocol {
     private var roomViewModel: RoomScreenViewModelProtocol
     private var timelineViewModel: TimelineViewModelProtocol
     private var composerViewModel: ComposerToolbarViewModelProtocol
-    private var wysiwygViewModel: WysiwygComposerViewModel
 
     private var cancellables = Set<AnyCancellable>()
 
@@ -90,11 +89,11 @@ final class RoomScreenCoordinator: CoordinatorProtocol {
                                               emojiProvider: parameters.emojiProvider,
                                               timelineControllerFactory: parameters.timelineControllerFactory,
                                               clientProxy: parameters.clientProxy)
-
+        
-        wysiwygViewModel = WysiwygComposerViewModel(minHeight: ComposerConstant.minHeight,
+        let wysiwygViewModel = WysiwygComposerViewModel(minHeight: ComposerConstant.minHeight,
-                                                    maxCompressedHeight: ComposerConstant.maxHeight,
+                                                        maxCompressedHeight: ComposerConstant.maxHeight,
-                                                    maxExpandedHeight: ComposerConstant.maxHeight,
+                                                        maxExpandedHeight: ComposerConstant.maxHeight,
-                                                    parserStyle: .elementX)
+                                                        parserStyle: .elementX)
         let composerViewModel = ComposerToolbarViewModel(initialText: parameters.sharedText,
                                                          roomProxy: parameters.roomProxy,
                                                          wysiwygViewModel: wysiwygViewModel,
@@ -215,9 +214,7 @@ final class RoomScreenCoordinator: CoordinatorProtocol {
     }
     
     func toPresentable() -> AnyView {
-        let composerToolbar = ComposerToolbar(context: composerViewModel.context,
+        let composerToolbar = ComposerToolbar(context: composerViewModel.context)
-                                              wysiwygViewModel: wysiwygViewModel,
-                                              keyCommands: composerViewModel.keyCommands)
 
         return AnyView(RoomScreen(context: roomViewModel.context,
                                   timelineContext: timelineViewModel.context,

ElementX/Sources/Screens/ThreadTimelineScreen/ThreadTimelineScreenCoordinator.swift

@@ -43,7 +43,6 @@ final class ThreadTimelineScreenCoordinator: CoordinatorProtocol {
     private let viewModel: ThreadTimelineScreenViewModelProtocol
     private let timelineViewModel: TimelineViewModelProtocol
     private var composerViewModel: ComposerToolbarViewModelProtocol
-    private var wysiwygViewModel: WysiwygComposerViewModel
     
     private var cancellables = Set<AnyCancellable>()
  
@@ -70,10 +69,10 @@ final class ThreadTimelineScreenCoordinator: CoordinatorProtocol {
                                               timelineControllerFactory: parameters.timelineControllerFactory,
                                               clientProxy: parameters.clientProxy)
         
-        wysiwygViewModel = WysiwygComposerViewModel(minHeight: ComposerConstant.minHeight,
+        let wysiwygViewModel = WysiwygComposerViewModel(minHeight: ComposerConstant.minHeight,
-                                                    maxCompressedHeight: ComposerConstant.maxHeight,
+                                                        maxCompressedHeight: ComposerConstant.maxHeight,
-                                                    maxExpandedHeight: ComposerConstant.maxHeight,
+                                                        maxExpandedHeight: ComposerConstant.maxHeight,
-                                                    parserStyle: .elementX)
+                                                        parserStyle: .elementX)
         
         #warning("Drafts are not handled and they can't be without rust side changes")
         
@@ -144,9 +143,7 @@ final class ThreadTimelineScreenCoordinator: CoordinatorProtocol {
     }
         
     func toPresentable() -> AnyView {
-        let composerToolbar = ComposerToolbar(context: composerViewModel.context,
+        let composerToolbar = ComposerToolbar(context: composerViewModel.context)
-                                              wysiwygViewModel: wysiwygViewModel,
-                                              keyCommands: composerViewModel.keyCommands)
         
         return AnyView(ThreadTimelineScreen(context: viewModel.context,
                                             timelineContext: timelineViewModel.context,

UnitTests/Sources/ComposerToolbarViewModelTests.swift

@@ -67,7 +67,7 @@ class ComposerToolbarViewModelTests: XCTestCase {
     }
 
     func testHandleKeyCommand() {
-        XCTAssertTrue(viewModel.keyCommands.count == 1)
+        XCTAssertTrue(viewModel.context.viewState.keyCommands.count == 1)
     }
 
     func testComposerFocusAfterEnablingRTE() {