Add TimelinePollMessageView

RiotSwiftUI/Modules/Room/TimelinePoll/Coordinator/TimelinePollProvider.swift

@@ -15,6 +15,7 @@
 //
 
 import Foundation
+import SwiftUI
 
 @objcMembers
 class TimelinePollProvider: NSObject {
@@ -45,7 +46,7 @@ class TimelinePollProvider: NSObject {
         
         let parameters = TimelinePollCoordinatorParameters(session: session, room: room, pollEvent: event)
         guard let coordinator = try? TimelinePollCoordinator(parameters: parameters) else {
-            return nil
+            return messageViewController(for: event)
         }
         
         coordinatorsForEventIdentifiers[event.eventId] = coordinator
@@ -62,3 +63,14 @@ class TimelinePollProvider: NSObject {
         coordinatorsForEventIdentifiers.removeAll()
     }
 }
+
+private extension TimelinePollProvider {
+    func messageViewController(for event: MXEvent) -> UIViewController? {
+        switch event.eventType {
+        case .pollEnd:
+            return VectorHostingController(rootView: TimelinePollMessageView(message: VectorL10n.pollTimelineReplyEndedPoll))
+        default:
+            return nil
+        }
+    }
+}

RiotSwiftUI/Modules/Room/TimelinePoll/View/TimelinePollMessageView.swift

@@ -0,0 +1,45 @@
+//
+// Copyright 2023 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
+
+/// A view for showing polls' related messages whenever there aren't enough information to show a full poll in the timeline.
+struct TimelinePollMessageView: View {
+    @Environment(\.theme) private var theme
+    private let imageSize: CGFloat = 16
+    
+    let message: String
+    
+    var body: some View {
+        HStack {
+            Image(uiImage: Asset.Images.pollHistory.image)
+                .resizable()
+                .frame(width: imageSize, height: imageSize)
+            
+            Text(message)
+                .font(.system(size: 15))
+                .foregroundColor(theme.colors.primaryContent)
+        }
+        .padding(.vertical, 8)
+        .frame(maxWidth: .infinity, alignment: .leading)
+    }
+}
+
+struct TimelinePollMessageView_Previews: PreviewProvider {
+    static var previews: some View {
+        TimelinePollMessageView(message: VectorL10n.pollTimelineReplyEndedPoll)
+    }
+}