Add thread decoration views for search results, fix #5268

Riot/Modules/Room/Views/Threads/From/FromThreadView.swift

@@ -0,0 +1,54 @@
+// 
+// Copyright 2021 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 Foundation
+import Reusable
+
+@objcMembers
+class FromThreadView: UIView {
+
+    private enum Constants {
+        static let viewHeight: CGFloat = 18
+    }
+
+    @IBOutlet private weak var iconView: UIImageView!
+    @IBOutlet private weak var titleLabel: UILabel!
+
+    static func contentViewHeight(forEvent event: MXEvent,
+                                  fitting maxWidth: CGFloat) -> CGFloat {
+        return Constants.viewHeight
+    }
+
+    static func instantiate() -> FromThreadView {
+        let view = FromThreadView.loadFromNib()
+        view.update(theme: ThemeService.shared().theme)
+        view.titleLabel.text = VectorL10n.messageFromAThread
+        return view
+    }
+
+}
+
+extension FromThreadView: NibLoadable {}
+
+extension FromThreadView: Themable {
+
+    func update(theme: Theme) {
+        backgroundColor = .clear
+        iconView.tintColor = theme.colors.secondaryContent
+        titleLabel.textColor = theme.colors.secondaryContent
+    }
+
+}