Resolves #142 Alarm control panel support

lib/entity_widgets/controls/alarm_control_panel_controls.dart

@@ -9,34 +9,71 @@ class AlarmControlPanelControlsWidget extends StatefulWidget {
 
 class _AlarmControlPanelControlsWidgetWidgetState extends State<AlarmControlPanelControlsWidget> {
 
-  void _disarm(AlarmControlPanelEntity entity, String code) {
+  String code = "";
+
+  void _callService(AlarmControlPanelEntity entity, String service) {
     eventBus.fire(new ServiceCallEvent(
-          entity.domain, "alarm_disarm", entity.entityId,
+          entity.domain, service, entity.entityId,
           {"code": "$code"}));
+    setState(() {
+      code = "";
+    });
   }
 
   @override
   Widget build(BuildContext context) {
     final entityModel = EntityModel.of(context);
     final AlarmControlPanelEntity entity = entityModel.entityWrapper.entity;
+    List<Widget> buttons = [];
+    if (entity.state == EntityState.alarm_disarmed) {
+      buttons.addAll(<Widget>[
+          RaisedButton(
+            onPressed: () => _callService(entity, "alarm_arm_home"),
+            child: Text("ARM HOME"),
+          ),
+          RaisedButton(
+            onPressed: () => _callService(entity, "alarm_arm_away"),
+            child: Text("ARM AWAY"),
+          )
+        ]
+      );
+    } else {
+      buttons.add(
+        RaisedButton(
+          onPressed: () => _callService(entity, "alarm_disarm"),
+          child: Text("DISARM"),
+        )
+      );
+    }
     return Column(
       crossAxisAlignment: CrossAxisAlignment.center,
 
       children: <Widget>[
-        TextField(
+        Container(
+          width: 150.0,
+          child: TextField(
             //focusNode: _focusNode,
               obscureText: true,
-            /*controller: new TextEditingController.fromValue(
+              controller: new TextEditingController.fromValue(
                   new TextEditingValue(
-                    text: _tmpValue,
+                      text: code,
                       selection:
-                    new TextSelection.collapsed(offset: _tmpValue.length)
+                      new TextSelection.collapsed(offset: code.length)
                   )
-            ),*/
+              ),
               onChanged: (value) {
-              Logger.d('Alarm code: $value');
+                code = value;
-            })
+              }
-      ],
+          )
+        ),
+        Wrap(
+          alignment: WrapAlignment.center,
+          spacing: 10.0,
+          runSpacing: 1.0,
+          children: buttons
+        )
+      ]
+
     );
   }