Resolves #283 Add possibility to restrat HA

lib/configuration.page.dart

@@ -0,0 +1,105 @@
+part of 'main.dart';
+
+class ConfigurationPage extends StatefulWidget {
+  ConfigurationPage({Key key, this.title}) : super(key: key);
+
+  final String title;
+
+  @override
+  _ConfigurationPageState createState() => new _ConfigurationPageState();
+}
+
+class ConfigurationItem {
+  ConfigurationItem({ this.isExpanded: false, this.header, this.body });
+
+  bool isExpanded;
+  final String header;
+  final Widget body;
+}
+
+class _ConfigurationPageState extends State<ConfigurationPage> {
+
+  List<ConfigurationItem> _items;
+
+  @override
+  void initState() {
+    super.initState();
+    _items = <ConfigurationItem>[
+      ConfigurationItem(
+          header: 'General',
+          body: Padding(
+            padding: EdgeInsets.fromLTRB(Sizes.leftWidgetPadding, 0.0, Sizes.rightWidgetPadding, Sizes.rowPadding),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              mainAxisSize: MainAxisSize.min,
+              children: <Widget>[
+                Text("Server management", style: TextStyle(fontSize: Sizes.largeFontSize)),
+                Container(height: Sizes.rowPadding,),
+                Text("Control your Home Assistant server from HA Client."),
+                Divider(),
+                Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: <Widget>[
+                    FlatServiceButton(
+                      text: "Restart",
+                      serviceName: "restart",
+                      serviceDomain: "homeassistant",
+                      entityId: null,
+                    ),
+                    FlatServiceButton(
+                      text: "Stop",
+                      serviceName: "stop",
+                      serviceDomain: "homeassistant",
+                      entityId: null,
+                    ),
+                  ],
+                )
+              ],
+            ),
+          )
+      )
+    ];
+  }
+
+  @override
+  Widget build(BuildContext context) {
+
+    return new Scaffold(
+      appBar: new AppBar(
+        leading: IconButton(icon: Icon(Icons.arrow_back), onPressed: (){
+          Navigator.pop(context);
+        }),
+        title: new Text(widget.title),
+      ),
+      body: ListView(
+        children: [
+          new ExpansionPanelList(
+            expansionCallback: (int index, bool isExpanded) {
+              setState(() {
+                _items[index].isExpanded = !_items[index].isExpanded;
+              });
+            },
+            children: _items.map((ConfigurationItem item) {
+              return new ExpansionPanel(
+                headerBuilder: (BuildContext context, bool isExpanded) {
+                  return CardHeaderWidget(
+                    name: item.header,
+                  );
+                },
+                isExpanded: item.isExpanded,
+                body: new Container(
+                  child: item.body,
+                ),
+              );
+            }).toList(),
+          ),
+        ],
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+  }
+}

lib/entity_class/automation_entity.dart

@@ -15,6 +15,8 @@ class AutomationEntity extends Entity {
       mainAxisSize: MainAxisSize.max,
       children: <Widget>[
         FlatServiceButton(
+          serviceDomain: domain,
+          entityId: entityId,
           text: "TRIGGER",
           serviceName: "trigger",
         )

lib/entity_class/button_entity.class.dart

@@ -6,6 +6,9 @@ class ButtonEntity extends Entity {
   @override
   Widget _buildStatePart(BuildContext context) {
     return FlatServiceButton(
+      entityId: entityId,
+      serviceDomain: domain,
+      serviceName: 'turn_on',
       text: "EXECUTE",
     );
   }

lib/entity_widgets/common/flat_service_button.dart

@@ -4,29 +4,30 @@ class FlatServiceButton extends StatelessWidget {
 
   final String serviceDomain;
   final String serviceName;
+  final String entityId;
   final String text;
   final double fontSize;
 
   FlatServiceButton({
     Key key,
-    this.serviceDomain,
-    this.serviceName: "turn_on",
+    @required this.serviceDomain,
+    @required this.serviceName,
+    @required this.entityId,
     @required this.text,
     this.fontSize: Sizes.stateFontSize
   }) : super(key: key);
 
-  void _setNewState(Entity entity) {
-    eventBus.fire(new ServiceCallEvent(serviceDomain ?? entity.domain, serviceName, entity.entityId, null));
+  void _setNewState() {
+    eventBus.fire(new ServiceCallEvent(serviceDomain, serviceName, entityId, null));
   }
 
   @override
   Widget build(BuildContext context) {
-    final entityModel = EntityModel.of(context);
     return SizedBox(
         height: fontSize*2.5,
         child: FlatButton(
           onPressed: (() {
-            _setNewState(entityModel.entityWrapper.entity);
+            _setNewState();
           }),
           child: Text(
             text,

lib/main.dart

@@ -75,6 +75,7 @@ part 'entity_widgets/controls/fan_controls.dart';
 part 'entity_widgets/controls/alarm_control_panel_controls.dart';
 part 'entity_widgets/controls/camera_controls.dart';
 part 'settings.page.dart';
+part 'configuration.page.dart';
 part 'home_assistant.class.dart';
 part 'log.page.dart';
 part 'entity.page.dart';
@@ -129,6 +130,7 @@ class HAClientApp extends StatelessWidget {
       routes: {
         "/": (context) => MainPage(title: 'HA Client'),
         "/connection-settings": (context) => ConnectionSettingsPage(title: "Settings"),
+        "/configuration": (context) => ConfigurationPage(title: "Configuration"),
         "/log-view": (context) => LogViewPage(title: "Log")
       },
     );
@@ -339,6 +341,14 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
       ]);
     } else {
       menuItems.addAll([
+        new ListTile(
+          leading: Icon(Icons.settings),
+          title: Text("Configuration"),
+          onTap: () {
+            Navigator.of(context).pop();
+            Navigator.of(context).pushNamed('/configuration');
+          },
+        ),
         new ListTile(
           leading: Icon(Icons.insert_drive_file),
           title: Text("Log"),