update status bar com serial port information

src/main.rs

@@ -47,6 +47,7 @@ fn build_ui(application: &gtk::Application) {
   let ui_databit: Label = builder.object("ui_databit").unwrap();
   let ui_parity: Label = builder.object("ui_parity").unwrap();
   let ui_stopbit: Label = builder.object("ui_stopbit").unwrap();
+  let ui_com: Label = builder.object("ui_com").unwrap();
   let ui_statusbar: Statusbar = builder.object("statusbar").unwrap();
   let ui_log_view: TextView = builder.object("log_view").unwrap();
 
@@ -83,6 +84,7 @@ fn build_ui(application: &gtk::Application) {
       Message::UiUpdateStatusBarDatabit(value) => ui_databit.set_text(value.to_string().as_str()),
       Message::UiUpdateStatusBarParity(value) => ui_parity.set_text(value.to_string().as_str()),
       Message::UiUpdateStatusBarStopbit(value) => ui_stopbit.set_text(value.to_string().as_str()),
+      Message::UiUpdateStatusBarCom(value) => ui_com.set_text(value.to_string().as_str()),
       _ => {}
     }
     glib::Continue(true)
@@ -119,7 +121,8 @@ fn process_cmd(command: String, to_ui: glib::Sender<Message>, gui2main_tx: Sende
       }
       "open" => {
         if command_split.len() == 1 {
-          to_ui.send(Message::UiUpdateLog("No enough argument\n".to_string())).unwrap();
+          // to_ui.send(Message::UiUpdateLog("No enough argument\n".to_string())).unwrap();
+          gui2main_tx.send(Message::MainCmdOpen("".to_string())).unwrap();
         } else {
           let args: Vec<String> = command_split[1..].to_vec().into_iter().map(|item| String::from(item)).collect();
           gui2main_tx.send(Message::MainCmdOpen(args[0].clone())).unwrap();
@@ -129,7 +132,7 @@ fn process_cmd(command: String, to_ui: glib::Sender<Message>, gui2main_tx: Sende
         gui2main_tx.send(Message::MainCmdClose).unwrap();
       }
       "list" => {
-        to_ui.send(Message::UiUpdateLog(list_available_ports())).unwrap();
+        to_ui.send(Message::UiUpdateLog(list_available_ports().0)).unwrap();
       }
       "send" => {
         gui2main_tx.send(Message::MainCmdSend(command[5..].parse().unwrap())).unwrap();
@@ -165,6 +168,7 @@ fn process_cmd(command: String, to_ui: glib::Sender<Message>, gui2main_tx: Sende
 
 fn main_proc(to_main_tx: Sender<Message>, rx: Receiver<Message>, ui_upd: glib::Sender<Message>) {
   let (mut main2port_tx, _rx_port_receive) = channel::<Message>();
+  let mut default_com_port = "USB0".to_string();
   let mut port_default_config = PortConfig {
     baud_rate: 115_200,
     data_bits: DataBits::Eight,
@@ -173,15 +177,27 @@ fn main_proc(to_main_tx: Sender<Message>, rx: Receiver<Message>, ui_upd: glib::S
     stopbit: StopBits::One,
     timeout: 10,
   };
+  let mut port_status_open = false;
+  default_com_port = list_available_ports().1;
+  ui_upd.send(Message::UiUpdateStatusBarCom(default_com_port.clone()));
   loop {
     if let Ok(msg) = rx.try_recv() {
       match msg {
         Message::UiCleanReceiveMsg => {}
         Message::MainCmdOpen(arg) => {
+          if port_status_open {
+            ui_upd.send(Message::UiUpdateLog("Port Already Open\n".to_string())).unwrap();
+              continue;
+          }
           let (tmp_to_port, main2port_rx) = channel::<Message>();
           main2port_tx = tmp_to_port;
-          match port_open(arg, port_default_config) {
+
+          let port_name = if arg.is_empty() {default_com_port.clone()} else {arg};
+          default_com_port = port_name.clone();
+          ui_upd.send(Message::UiUpdateStatusBarCom(default_com_port.clone()));
+          match port_open(port_name, port_default_config) {
             Ok(port) => {
+              port_status_open = true;
               std::thread::spawn(closure!(clone to_main_tx, || port_proc(port, to_main_tx, main2port_rx)));
               ui_upd.send(Message::UiUpdateLog("open Port succeed\n".to_string())).unwrap();
             }
@@ -195,7 +211,12 @@ fn main_proc(to_main_tx: Sender<Message>, rx: Receiver<Message>, ui_upd: glib::S
           }
         }
         Message::MainCmdClose => {
-          main2port_tx.send(Message::PortCmdClose).unwrap();
+          if port_status_open{
+            main2port_tx.send(Message::PortCmdClose).unwrap();
+          }
+          else {
+            ui_upd.send(Message::UiUpdateLog("No port opened\n".to_string())).unwrap();
+          }
         }
         Message::MainCmdSend(msg) => {
           main2port_tx.send(Message::PortCmdSend(msg)).unwrap();
@@ -302,9 +323,11 @@ fn main_proc(to_main_tx: Sender<Message>, rx: Receiver<Message>, ui_upd: glib::S
         }
         Message::PortCloseSucceed => {
           ui_upd.send(Message::UiUpdateLog("Close port succeed\n".to_string())).unwrap();
+            port_status_open = false;
         }
         Message::PortError(msg) => {
           ui_upd.send(Message::UiUpdateLog(format!("port closed by error: {}", msg))).unwrap();
+          port_status_open = false;
         }
         _ => {}
       }

src/port.rs

@@ -12,6 +12,7 @@ pub enum Message {
   UiShowLog,
   UiHideLog,
 
+  UiUpdateStatusBarCom(String),
   UiUpdateStatusBarBaudrate(u32),
   UiUpdateStatusBarParity(String),
   UiUpdateStatusBarStopbit(u32),
@@ -94,17 +95,21 @@ pub fn port_proc(mut port: Box<dyn SerialPort>, to_main: Sender<Message>, from_m
   }
 }
 
-pub(crate) fn list_available_ports() -> String {
+pub(crate) fn list_available_ports() -> (String, String){
   let mut ret = String::new();
+  let mut ret_portname = String::new();
   match serialport::available_ports() {
     Ok(ports) => {
       for p in ports {
         ret += &*String::from(format!("{:?}\n", p));
+        if ret_portname.is_empty() {
+          ret_portname = p.port_name;
+        }
       }
     }
     Err(err) => {
       ret = format!("{}", err);
     }
   }
-  ret
+  (ret,ret_portname)
 }

src/test.ui

@@ -6,9 +6,17 @@
     <property name="can-focus">False</property>
     <property name="icon-name">network-server</property>
     <child>
-      <object class="GtkTextView" id="log_view">
+      <object class="GtkScrolledWindow">
         <property name="visible">True</property>
         <property name="can-focus">True</property>
+        <property name="shadow-type">in</property>
+        <child>
+          <object class="GtkTextView" id="log_view">
+            <property name="visible">True</property>
+            <property name="can-focus">True</property>
+            <property name="editable">False</property>
+          </object>
+        </child>
       </object>
     </child>
   </object>
@@ -229,6 +237,7 @@
               <object class="GtkTextView" id="receive_view">
                 <property name="visible">True</property>
                 <property name="can-focus">True</property>
+                <property name="editable">False</property>
               </object>
             </child>
           </object>
@@ -244,6 +253,19 @@
             <property name="can-focus">False</property>
             <property name="hexpand">True</property>
             <property name="spacing">5</property>
+            <child>
+              <object class="GtkLabel" id="ui_com">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="hexpand">True</property>
+                <property name="label" translatable="yes">COM</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
             <child>
               <object class="GtkLabel" id="ui_baudrate">
                 <property name="visible">True</property>
@@ -254,7 +276,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">1</property>
+                <property name="position">2</property>
               </packing>
             </child>
             <child>
@@ -267,7 +289,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">2</property>
+                <property name="position">3</property>
               </packing>
             </child>
             <child>
@@ -280,7 +302,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">3</property>
+                <property name="position">4</property>
               </packing>
             </child>
             <child>
@@ -293,7 +315,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">4</property>
+                <property name="position">5</property>
               </packing>
             </child>
           </object>