add enter key to log in

Kordophone/Shared/LoginView.swift

@@ -7,19 +7,38 @@ struct LoginView : View {
     @AppStorage("username") var username: String = ""
     @AppStorage("password") var password: String = ""
 
+    @State private var loggingIn = false
+    
     var onLogin: (ConnectionInfo) -> Void = { _ in }
     
+    private func login() {
+        loggingIn = true
+        onLogin(ConnectionInfo(serverAddress: serverAddress,
+                               credentials: Credentials(username: username,
+                                                        password: password)))
+    }
+    
     var body: some View {
         VStack {
             TextField("server", text: $serverAddress)
+                .onSubmit {
+                    login()
+                }
             TextField("username", text: $username)
+                .onSubmit {
+                    login()
+                }
             SecureField("password", text: $password)
+                .onSubmit {
+                    login()
+                }
             Button("Login") {
-                onLogin(ConnectionInfo(serverAddress: serverAddress,
-                                       credentials: Credentials(username: username,
-                                                                password: password)))
+                login()
             }
+            .keyboardShortcut(.return)
         }
+        .disabled(loggingIn)
+        .animation(.spring(), value: loggingIn)
         .padding()
     }
 }