feat: Selectable text view

Mail/Views/Thread/MessageBodyView.swift

@@ -34,9 +34,7 @@ struct MessageBodyView: View {
         VStack {
             if let body = presentableBody.body {
                 if body.type == "text/plain" {
-                    Text(body.value ?? "")
-                        .textStyle(.body)
-                        .frame(maxWidth: .infinity, alignment: .leading)
+                    SelectableTextView(text: body.value)
                         .padding(.horizontal, 16)
                 } else {
                     GeometryReader { proxy in

Mail/Views/Thread/SelectableTextView.swift

@@ -0,0 +1,40 @@
+/*
+ Infomaniak Mail - iOS App
+ Copyright (C) 2022 Infomaniak Network SA
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import Foundation
+import MailCore
+import SwiftUI
+
+struct SelectableTextView: UIViewRepresentable {
+    let text: String?
+    func makeUIView(context: Context) -> UITextView {
+        let textView = UITextView()
+        textView.isScrollEnabled = false
+        textView.isEditable = false
+        textView.textContainer.lineFragmentPadding = 0
+        textView.font = .systemFont(ofSize: 16)
+        textView.textColor = UIColor(MailTextStyle.body.color)
+
+        textView.text = text
+        return textView
+    }
+
+    func updateUIView(_ uiView: UITextView, context: Context) {
+        uiView.text = text
+    }
+}