feat(mainwindow): Optimize code logic.

Description: 优化代码逻辑

Log: 优化代码逻辑

src/backthread.cpp

@@ -75,7 +75,8 @@ IFace* BackThread::execGetIface()
             QString iname = lastStr.left(index2);
             QString istateStr = lastStr.mid(index2).trimmed();
 
-            if (type == "ethernet") {
+            //只要存在一个有线设备已连接，就不再扫描其他有线设备状态，避免有线被误断开
+            if (type == "ethernet" && iface->lstate != 0) {
                 // if type is wired network
                 iface->lname = iname;
 
@@ -434,5 +435,6 @@ void BackThread::disConnLanOrWifi(QString type)
             kylin_network_set_con_down(strSlist.toUtf8().data());
         }
     }
+    emit btFinish();
     pclose(p_file);
 }

src/mainwindow.cpp

@@ -494,10 +494,16 @@ void MainWindow::initNetwork()
             BackThread *m_bt = new BackThread();
             IFace *m_iface = m_bt->execGetIface();
 
+            //写成信号监听自动执行，避免阻塞主线程
+           disconnect_time = 1;
+           connect (m_bt, &BackThread::btFinish, this, [ = ](){
+               disconnect_time ++;
+               if (disconnect_time <= 3) {
                    m_bt->disConnLanOrWifi("ethernet");
-            sleep(1);
-            m_bt->disConnLanOrWifi("ethernet");
-            sleep(1);
+               } else {
+                   m_bt->disconnect();
+               }
+           });
             m_bt->disConnLanOrWifi("ethernet");
 
             delete m_iface;
@@ -918,10 +924,16 @@ void MainWindow::onDeleteLan()
 {
     deleteLanTimer->stop();
     BackThread *btn_bt = new BackThread();
+    //写成信号监听自动执行，避免阻塞主线程
+    disconnect_time = 1;
+    connect (btn_bt, &BackThread::btFinish, this, [ = ](){
+        disconnect_time ++;
+        if (disconnect_time <= 3) {
             btn_bt->disConnLanOrWifi("ethernet");
-    sleep(1);
-    btn_bt->disConnLanOrWifi("ethernet");
-    sleep(1);
+        } else {
+            btn_bt->disconnect();
+        }
+    });
     btn_bt->disConnLanOrWifi("ethernet");
     btn_bt->deleteLater();
 

src/mainwindow.h

@@ -268,6 +268,7 @@ private:
 
     int currentIconIndex;
     int activeWifiSignalLv;
+    int disconnect_time = 0;
 
     long int start_rcv_rates = 0;	//保存开始时的流量计数
     long int end_rcv_rates = 0;	//保存结束时的流量计数