CAKE-169 | added useSSL parameter to node.dart and to node_create_or_edit_view_model.dart; applied useSSL parameter in the connectToNode() method (monero_wallet.dart) and in the save() method (node_create_or_edit_view_model.dart); created standard_checkbox.dart and applied StandardCheckbox widget in the node_create_or_edit_page.dart

lib/src/screens/nodes/node_create_or_edit_page.dart

@@ -1,4 +1,6 @@
 import 'package:cake_wallet/src/widgets/alert_with_one_action.dart';
+import 'package:cake_wallet/src/widgets/checkbox_widget.dart';
+import 'package:cake_wallet/src/widgets/standard_checkbox.dart';
 import 'package:cake_wallet/utils/show_pop_up.dart';
 import 'package:cake_wallet/view_model/node_list/connection_state.dart';
 import 'package:flutter/material.dart';
@@ -130,7 +132,22 @@ class NodeCreateOrEditPage extends BasePage {
                           )
                         )
                       ],
-                    )
+                    ),
+                    Padding(
+                      padding: EdgeInsets.only(top: 20),
+                      child: Row(
+                        mainAxisAlignment: MainAxisAlignment.start,
+                        mainAxisSize: MainAxisSize.max,
+                        children: [
+                          Observer(
+                              builder: (_) => StandardCheckbox(
+                                value: nodeCreateOrEditViewModel.useSSL,
+                                onChanged: (value) =>
+                                  nodeCreateOrEditViewModel.useSSL = value,
+                                caption: 'Use SSL',
+                              ))
+                        ],
+                      ))
                   ]
                 ],
               )),

lib/src/widgets/standard_checkbox.dart

@@ -0,0 +1,76 @@
+import 'dart:ui';
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+class StandardCheckbox extends StatefulWidget {
+  StandardCheckbox({
+    @required this.value,
+    this.caption = '',
+    @required this.onChanged});
+
+  final bool value;
+  final String caption;
+  final Function(bool) onChanged;
+
+  @override
+  StandardCheckboxState createState() =>
+      StandardCheckboxState(value, caption, onChanged);
+}
+
+class StandardCheckboxState extends State<StandardCheckbox> {
+  StandardCheckboxState(this.value, this.caption, this.onChanged);
+
+  bool value;
+  String caption;
+  Function(bool) onChanged;
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: () {
+        value = !value;
+        onChanged(value);
+        setState(() {});
+      },
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        mainAxisAlignment: MainAxisAlignment.start,
+        children: <Widget>[
+          Container(
+            height: 24.0,
+            width: 24.0,
+            margin: EdgeInsets.only(
+              right: 10.0,
+            ),
+            decoration: BoxDecoration(
+                border: Border.all(
+                    color: Theme.of(context)
+                        .primaryTextTheme
+                        .caption
+                        .color,
+                    width: 1.0),
+                borderRadius: BorderRadius.all(
+                    Radius.circular(8.0)),
+                color: Theme.of(context).backgroundColor),
+            child: value
+              ? Icon(
+                Icons.check,
+                color: Colors.blue,
+                size: 20.0,
+              )
+              : Offstage(),
+          ),
+          Text(
+            caption,
+            style: TextStyle(
+                fontSize: 16.0,
+                color: Theme.of(context)
+                    .primaryTextTheme
+                    .title
+                    .color),
+          )
+        ],
+      ),
+    );
+  }
+}