Move logout button to settings. Replace logout button in menu with shutdown button.

lib/screens/settings.dart

@@ -15,7 +15,8 @@ class SettingsScreen extends BaseScreen {
 
   SettingsScreen(helper, app, this.returnToScanner) : super(helper, app);
 
-  @override State createState() => new SettingsState(helper, app, returnToScanner);
+  @override State createState() =>
+    new SettingsState(helper, app, returnToScanner);
 }
 
 class MenuItem {
@@ -29,6 +30,7 @@ class MenuItem {
 class SettingsState extends BaseState<SettingsScreen> {
 
   List<MenuItem> menuItems = [
+    new MenuItem('', ''),
     new MenuItem('', ''),
     new MenuItem('', '')
   ];
@@ -42,27 +44,35 @@ class SettingsState extends BaseState<SettingsScreen> {
   }
 
   @override Widget build(BuildContext ctx) {
-    helper.getSettings().then((info) {
+    helper.getSettings(true).then((info) {
       setState(() {
         menuItems[0].title = StringsLocalization.currency();
         menuItems[1].title = StringsLocalization.locale();
+        menuItems[2].title = StringsLocalization.logout();
         menuItems[0].selectedValue = info['currency'].toString();
-        menuItems[1].selectedValue = info['locale'] == null ? Intl.defaultLocale : info['locale'].toString();
+        menuItems[1].selectedValue =
+        info['locale'] == null ? Intl.defaultLocale : info['locale'];
+        menuItems[2].selectedValue =
+        info['token'] == null ? '' : getTokenSuffix(info['token']);
       });
     });
     return new WillPopScope(onWillPop: onWillPop, child: getMainWidget());
   }
 
+  String getTokenSuffix(String token) {
+    return token.substring(token.length - 4, token.length);
+  }
+
   Widget getMainWidget() {
     return new Scaffold(appBar: getAppBar(),
-        body: getScreenContent());
+      body: getScreenContent());
   }
 
   @override
   Widget getScreenContent() {
     return new Container(
-        margin: new EdgeInsets.only(top: 16.0),
-        child: new ListView(children: getSettings()));
+      margin: new EdgeInsets.only(top: 16.0),
+      child: new ListView(children: getSettings()));
   }
 
   @override
@@ -73,33 +83,58 @@ class SettingsState extends BaseState<SettingsScreen> {
   List<Widget> getSettings() {
     List<Widget> widgets = new List();
     for (int i = 0; i < menuItems.length; i++) {
-      if (menuItems[i].selectedValue != '') {
-        widgets.add(getSettingsItem(() => onPressed(menuItems.indexOf(menuItems[i])),
+      if (menuItems[i].selectedValue.toString() != '') {
+        widgets.add(
+          getSettingsItem(() => onPressed(menuItems.indexOf(menuItems[i])),
             menuItems[i].title,
-            i == 0 ? getCurrencyTitle(int.parse(menuItems[i].selectedValue)) : getLocaleTitle(menuItems[i].selectedValue)));
+            getValue(i)));
       }
     }
     return widgets;
   }
 
+  String getValue(int position) {
+    switch (position) {
+      case 0 :
+        return getCurrencyTitle(int.parse(menuItems[position].selectedValue));
+      case 1 :
+        return getLocaleTitle(menuItems[position].selectedValue);
+      default :
+        return null;
+    }
+  }
+
   Widget getSettingsItem(VoidCallback onPressed, String title, String value) {
     return new Container(
-        height: 56.0,
-        padding: new EdgeInsets.only(left: 8.0),
-        child: (new FlatButton(
-            onPressed: onPressed,
-            child: new Row(children: <Widget>[
-              new Expanded(child: new Text(title, style: new TextStyle(
-                  fontWeight: FontWeight.w600,
-                  color: faqGrey,
-                  fontSize: 14.0))),
-              new Text(value,
-                  style: new TextStyle(
-                      fontWeight: FontWeight.w400,
-                      color: faqGrey,
-                      fontSize: 14.0)),
-              getArrow()
-            ]))));
+      height: 56.0,
+      padding: new EdgeInsets.only(left: 8.0),
+      child: (new FlatButton(
+        onPressed: onPressed,
+        child: getRow(title, value))));
+  }
+
+  Widget getRow(String title, String value) {
+    if (value == null) {
+      return new Row(children: <Widget>[
+        new Text(title, style: new TextStyle(
+          fontWeight: FontWeight.w600,
+          color: faqGrey,
+          fontSize: 14.0))
+      ]);
+    } else {
+      return new Row(children: <Widget>[
+        new Expanded(child: new Text(title, style: new TextStyle(
+          fontWeight: FontWeight.w600,
+          color: faqGrey,
+          fontSize: 14.0))),
+        new Text(value,
+          style: new TextStyle(
+            fontWeight: FontWeight.w400,
+            color: faqGrey,
+            fontSize: 14.0)),
+        getArrow()
+      ]);
+    }
   }
 
   void onPressed(int position) {
@@ -108,12 +143,14 @@ class SettingsState extends BaseState<SettingsScreen> {
         return pushRoute(context, new CurrenciesScreen(helper, app));
       case 1 :
         return pushRoute(context, new LanguagesScreen(helper, app));
+      case 2 :
+        return logout(context, helper);
     }
   }
 
   Widget getArrow() {
     return new Container(margin: new EdgeInsets.only(left: 8.0),
-        child: new Image.asset(settings_arrow_png, height: 42.0));
+      child: new Image.asset(settings_arrow_png, height: 42.0));
   }
 
   @override
@@ -122,10 +159,10 @@ class SettingsState extends BaseState<SettingsScreen> {
   }
 
   onWillPop() {
-    if(returnToScanner) {
+    if (returnToScanner) {
       return startScanner(context, app, helper);
     } else {
       return true;
     }
   }
-}
+}