RoomScreenViewModel is now TimelineViewModel (#3157)

Co-authored-by: Stefan Ceriu <stefanc@matrix.org>

ElementX/Sources/Screens/Timeline/View/Supplementary/TimelineDeliveryStatusView.swift

@@ -0,0 +1,60 @@
+//
+// Copyright 2022 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 Compound
+import SwiftUI
+
+struct TimelineDeliveryStatusView: View {
+    enum Status {
+        case sending
+        case sent
+    }
+
+    let deliveryStatus: Status
+
+    private var icon: CompoundIcon {
+        switch deliveryStatus {
+        case .sending:
+            return CompoundIcon(\.circle, size: .xSmall, relativeTo: .compound.bodyMD)
+        case .sent:
+            return CompoundIcon(\.checkCircle, size: .xSmall, relativeTo: .compound.bodyMD)
+        }
+    }
+    
+    var body: some View {
+        icon
+            .foregroundColor(.compound.iconSecondary)
+            .accessibilityLabel(accessibilityLabel)
+    }
+    
+    private var accessibilityLabel: String {
+        switch deliveryStatus {
+        case .sending:
+            return L10n.commonSending
+        case .sent:
+            return L10n.commonSent
+        }
+    }
+}
+
+struct TimelineDeliveryStatusView_Previews: PreviewProvider, TestablePreview {
+    static var previews: some View {
+        VStack(spacing: 8) {
+            TimelineDeliveryStatusView(deliveryStatus: .sending)
+            TimelineDeliveryStatusView(deliveryStatus: .sent)
+        }
+    }
+}