Device Manager: Rename Session (#6826)

* Publish the user sessions overview data.
* Add UserSessionName screen.
* Update logout action to match Figma more closely.

RiotSwiftUI/Modules/UserSessions/UserSessionName/MockUserSessionNameScreenState.swift

@@ -0,0 +1,51 @@
+//
+// 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 SwiftUI
+
+/// Using an enum for the screen allows you define the different state cases with
+/// the relevant associated data for each case.
+enum MockUserSessionNameScreenState: MockScreenState, CaseIterable {
+    // A case for each state you want to represent
+    // with specific, minimal associated data that will allow you
+    // mock that screen.
+    case initialName
+    case empty
+    case changedName
+    
+    /// The associated screen
+    var screenType: Any.Type {
+        UserSessionName.self
+    }
+    
+    /// Generate the view struct for the screen state.
+    var screenView: ([Any], AnyView) {
+        let viewModel: UserSessionNameViewModel
+        switch self {
+        case .initialName:
+            viewModel = UserSessionNameViewModel(sessionInfo: .mockPhone)
+        case .empty:
+            viewModel = UserSessionNameViewModel(sessionInfo: .mockPhone)
+            viewModel.state.bindings.sessionName = ""
+        case .changedName:
+            viewModel = UserSessionNameViewModel(sessionInfo: .mockPhone)
+            viewModel.state.bindings.sessionName = "iPhone SE"
+        }
+        
+        return ([viewModel], AnyView(UserSessionName(viewModel: viewModel.context)))
+    }
+}