better install prompt

Signed-off-by: fufesou <shuanglongchen@yeah.net>

flutter/lib/common.dart

@@ -946,7 +946,6 @@ Widget msgboxContent(String type, String title, String text) {
 void msgBoxCommon(OverlayDialogManager dialogManager, String title,
     Widget content, List<Widget> buttons,
     {bool hasCancel = true}) {
-  dialogManager.dismissAll();
   dialogManager.show((setState, close) => CustomAlertDialog(
         title: Text(
           translate(title),

flutter/lib/desktop/pages/install_page.dart

@@ -65,7 +65,7 @@ class _InstallPageBodyState extends State<_InstallPageBody>
   late final TextEditingController controller;
   final RxBool startmenu = true.obs;
   final RxBool desktopicon = true.obs;
-  final RxBool driverCert = false.obs;
+  final RxBool driverCert = true.obs;
   final RxBool showProgress = false.obs;
   final RxBool btnEnabled = true.obs;
 
@@ -242,13 +242,47 @@ class _InstallPageBodyState extends State<_InstallPageBody>
   }
 
   void install() {
-    btnEnabled.value = false;
-    showProgress.value = true;
-    String args = '';
-    if (startmenu.value) args += ' startmenu';
-    if (desktopicon.value) args += ' desktopicon';
-    if (driverCert.value) args += ' driverCert';
-    bind.installInstallMe(options: args, path: controller.text);
+    do_install() {
+      btnEnabled.value = false;
+      showProgress.value = true;
+      String args = '';
+      if (startmenu.value) args += ' startmenu';
+      if (desktopicon.value) args += ' desktopicon';
+      if (driverCert.value) args += ' driverCert';
+      bind.installInstallMe(options: args, path: controller.text);
+    }
+
+    if (driverCert.isTrue) {
+      final tag = 'install-info-install-cert-confirm';
+      final btns = [
+        dialogButton(
+          'Cancel',
+          onPressed: () => gFFI.dialogManager.dismissByTag(tag),
+          isOutline: true,
+        ),
+        dialogButton(
+          'OK',
+          onPressed: () {
+            gFFI.dialogManager.dismissByTag(tag);
+            do_install();
+          },
+          isOutline: false,
+        ),
+      ];
+      gFFI.dialogManager.show(
+        (setState, close) => CustomAlertDialog(
+          title: null,
+          content: SelectionArea(
+              child: msgboxContent(
+                  'info', '', 'Continue with installing cert is checked.')),
+          actions: btns,
+          onCancel: close,
+        ),
+        tag: tag,
+      );
+    } else {
+      do_install();
+    }
   }
 
   void selectInstallPath() async {