Version 0.3.0

Refactoring: Stateful entity widgets

android/app/build.gradle

@@ -39,8 +39,8 @@ android {
         applicationId "com.keyboardcrumbs.haclient"
         minSdkVersion 21
         targetSdkVersion 27
-        versionCode 19
-        versionName "0.1.1-alpha"
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 

lib/card_class.dart

@@ -0,0 +1,54 @@
+part of 'main.dart';
+
+class HACard extends StatelessWidget {
+
+  final List<Entity> entities;
+  final String friendlyName;
+
+  const HACard({
+    Key key,
+    this.entities,
+    this.friendlyName
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    List<Widget> body = [];
+    body.add(_buildCardHeader());
+    body.addAll(_buildCardBody(context));
+    return Card(
+        child: new Column(mainAxisSize: MainAxisSize.min, children: body)
+    );
+  }
+
+  Widget _buildCardHeader() {
+    var result;
+    if ((friendlyName != null) && (friendlyName.trim().length > 0)) {
+      result = new ListTile(
+        //leading: const Icon(Icons.device_hub),
+        //subtitle: Text(".."),
+        //trailing: Text("${data["state"]}"),
+        title: Text("$friendlyName",
+            textAlign: TextAlign.left,
+            overflow: TextOverflow.ellipsis,
+            style: new TextStyle(fontWeight: FontWeight.bold, fontSize: 25.0)),
+      );
+    } else {
+      result = new Container(width: 0.0, height: 0.0);
+    }
+    return result;
+  }
+
+  List<Widget> _buildCardBody(BuildContext context) {
+    List<Widget> result = [];
+    entities.forEach((Entity entity) {
+      result.add(
+        Padding(
+          padding: EdgeInsets.fromLTRB(0.0, 10.0, 0.0, 10.0),
+          child: entity.buildDefaultWidget(context),
+        ));
+    });
+    return result;
+  }
+
+}

lib/entity.page.dart

@@ -0,0 +1,66 @@
+part of 'main.dart';
+
+class EntityViewPage extends StatefulWidget {
+  EntityViewPage({Key key, @required this.entity, @required this.homeAssistant }) : super(key: key);
+
+  final Entity entity;
+  final HomeAssistant homeAssistant;
+
+  @override
+  _EntityViewPageState createState() => new _EntityViewPageState();
+}
+
+class _EntityViewPageState extends State<EntityViewPage> {
+  String _title;
+  StreamSubscription _stateSubscription;
+
+  @override
+  void initState() {
+    super.initState();
+    if (_stateSubscription != null) _stateSubscription.cancel();
+    _stateSubscription = eventBus.on<StateChangedEvent>().listen((event) {
+      if (event.entityId == widget.entity.entityId) {
+        setState(() {});
+      }
+    });
+    _prepareData();
+    _getHistory();
+  }
+
+  void _prepareData() async {
+    _title = widget.entity.displayName;
+  }
+
+  void _getHistory() {
+   /* widget.homeAssistant.getHistory(widget.entity.entityId).then((List history) {
+      if (history != null) {
+        
+      }
+    });*/
+  }
+
+
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(
+      appBar: new AppBar(
+        leading: IconButton(icon: Icon(Icons.arrow_back), onPressed: (){
+          Navigator.pop(context);
+        }),
+        // Here we take the value from the MyHomePage object that was created by
+        // the App.build method, and use it to set our appbar title.
+        title: new Text(_title),
+      ),
+      body: Padding(
+          padding: EdgeInsets.all(10.0),
+          child: widget.entity.buildEntityPageWidget(context)
+      ),
+    );
+  }
+
+  @override
+  void dispose(){
+    if (_stateSubscription != null) _stateSubscription.cancel();
+    super.dispose();
+  }
+}

lib/entity_class/entity.class.dart

@@ -0,0 +1,466 @@
+part of '../main.dart';
+
+class Entity {
+  static const STATE_ICONS_COLORS = {
+    "on": Colors.amber,
+    "off": Color.fromRGBO(68, 115, 158, 1.0),
+    "default": Color.fromRGBO(68, 115, 158, 1.0),
+    "unavailable": Colors.black12,
+    "unknown": Colors.black12,
+    "playing": Colors.amber
+  };
+  static const badgeColors = {
+    "default": Color.fromRGBO(223, 76, 30, 1.0),
+    "binary_sensor": Color.fromRGBO(3, 155, 229, 1.0)
+  };
+  static List badgeDomains = [
+    "alarm_control_panel",
+    "binary_sensor",
+    "device_tracker",
+    "updater",
+    "sun",
+    "timer",
+    "sensor"
+  ];
+
+  double rightWidgetPadding = 14.0;
+  double leftWidgetPadding = 8.0;
+  double extendedWidgetHeight = 50.0;
+  double widgetHeight = 34.0;
+  double iconSize = 28.0;
+  double stateFontSize = 16.0;
+  double nameFontSize = 16.0;
+  double smallFontSize = 14.0;
+  double largeFontSize = 24.0;
+  double inputWidth = 160.0;
+  double rowPadding = 10.0;
+
+  Map attributes;
+  String domain;
+  String entityId;
+  String state;
+  String assumedState;
+  DateTime _lastUpdated;
+
+  List<Entity> childEntities = [];
+
+  List<String> attributesToShow = ["all"];
+
+  String get displayName =>
+      attributes["friendly_name"] ?? (attributes["name"] ?? "_");
+
+  String get deviceClass => attributes["device_class"] ?? null;
+  bool get isView =>
+      (domain == "group") &&
+      (attributes != null ? attributes["view"] ?? false : false);
+  bool get isGroup => domain == "group";
+  bool get isBadge => Entity.badgeDomains.contains(domain);
+  String get icon => attributes["icon"] ?? "";
+  bool get isOn => state == "on";
+  String get entityPicture => attributes["entity_picture"];
+  String get unitOfMeasurement => attributes["unit_of_measurement"] ?? "";
+  List get childEntityIds => attributes["entity_id"] ?? [];
+  String get lastUpdated => _getLastUpdatedFormatted();
+
+  Entity(Map rawData) {
+    update(rawData);
+  }
+
+  void update(Map rawData) {
+    attributes = rawData["attributes"] ?? {};
+    domain = rawData["entity_id"].split(".")[0];
+    entityId = rawData["entity_id"];
+    state = rawData["state"];
+    assumedState = state;
+    _lastUpdated = DateTime.tryParse(rawData["last_updated"]);
+  }
+
+  double _getDoubleAttributeValue(String attributeName) {
+    var temp1 = attributes["$attributeName"];
+    if (temp1 is int) {
+      return temp1.toDouble();
+    } else if (temp1 is double) {
+      return temp1;
+    } else {
+      return null;
+    }
+  }
+
+  Widget buildDefaultWidget(BuildContext context) {
+    return EntityModel(
+      entity: this,
+      child: DefaultEntityContainer(state: _buildStatePart(context)),
+      handleTap: true,
+    );
+  }
+
+  Widget _buildStatePart(BuildContext context) {
+    return SimpleEntityState();
+  }
+
+  Widget _buildStatePartForPage(BuildContext context) {
+    return _buildStatePart(context);
+  }
+
+  Widget _buildAdditionalControlsForPage(BuildContext context) {
+    return Container(
+      width: 0.0,
+      height: 0.0,
+    );
+  }
+
+  Widget buildEntityPageWidget(BuildContext context) {
+    return EntityModel(
+      entity: this,
+      child: EntityPageContainer(children: <Widget>[
+        DefaultEntityContainer(state: _buildStatePartForPage(context)),
+        LastUpdatedWidget(),
+        Divider(),
+        _buildAdditionalControlsForPage(context),
+        Divider(),
+        EntityAttributesList()
+      ]),
+      handleTap: false,
+    );
+  }
+
+  Widget buildBadgeWidget(BuildContext context) {
+    return EntityModel(
+      entity: this,
+      child: Badge(),
+      handleTap: true,
+    );
+  }
+
+  String getAttribute(String attributeName) {
+    if (attributes != null) {
+      return attributes["$attributeName"];
+    }
+    return null;
+  }
+
+  String _getLastUpdatedFormatted() {
+    if (_lastUpdated == null) {
+      return "-";
+    } else {
+      DateTime now = DateTime.now();
+      Duration d = now.difference(_lastUpdated);
+      String text;
+      int v;
+      if (d.inDays == 0) {
+        if (d.inHours == 0) {
+          if (d.inMinutes == 0) {
+            text = "seconds ago";
+            v = d.inSeconds;
+          } else {
+            text = "minutes ago";
+            v = d.inMinutes;
+          }
+        } else {
+          text = "hours ago";
+          v = d.inHours;
+        }
+      } else {
+        text = "days ago";
+        v = d.inDays;
+      }
+      return "$v $text";
+    }
+  }
+}
+
+class SwitchEntity extends Entity {
+  SwitchEntity(Map rawData) : super(rawData);
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return SwitchControlWidget();
+  }
+}
+
+class ButtonEntity extends Entity {
+  ButtonEntity(Map rawData) : super(rawData);
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return ButtonControlWidget();
+  }
+}
+
+class TextEntity extends Entity {
+  TextEntity(Map rawData) : super(rawData);
+
+  int get valueMinLength => attributes["min"] ?? -1;
+  int get valueMaxLength => attributes["max"] ?? -1;
+  String get valuePattern => attributes["pattern"] ?? null;
+  bool get isTextField => attributes["mode"] == "text";
+  bool get isPasswordField => attributes["mode"] == "password";
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return TextControlWidget();
+  }
+}
+
+class SunEntity extends Entity {
+  SunEntity(Map rawData) : super(rawData);
+}
+
+class SliderEntity extends Entity {
+  SliderEntity(Map rawData) : super(rawData);
+
+  double get minValue => attributes["min"] ?? 0.0;
+  double get maxValue => attributes["max"] ?? 100.0;
+  double get valueStep => attributes["step"] ?? 1.0;
+  double get doubleState => double.tryParse(state) ?? 0.0;
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return Expanded(
+      //width: 200.0,
+      child: Row(
+        children: <Widget>[
+          SliderControlWidget(
+            expanded: true,
+          ),
+          SimpleEntityState(),
+        ],
+      ),
+    );
+  }
+
+  @override
+  Widget _buildStatePartForPage(BuildContext context) {
+    return SimpleEntityState();
+  }
+
+  @override
+  Widget _buildAdditionalControlsForPage(BuildContext context) {
+    return SliderControlWidget(
+      expanded: false,
+    );
+  }
+}
+
+class ClimateEntity extends Entity {
+  @override
+  double widgetHeight = 38.0;
+
+  static const SUPPORT_TARGET_TEMPERATURE = 1;
+  static const SUPPORT_TARGET_TEMPERATURE_HIGH = 2;
+  static const SUPPORT_TARGET_TEMPERATURE_LOW = 4;
+  static const SUPPORT_TARGET_HUMIDITY = 8;
+  static const SUPPORT_TARGET_HUMIDITY_HIGH = 16;
+  static const SUPPORT_TARGET_HUMIDITY_LOW = 32;
+  static const SUPPORT_FAN_MODE = 64;
+  static const SUPPORT_OPERATION_MODE = 128;
+  static const SUPPORT_HOLD_MODE = 256;
+  static const SUPPORT_SWING_MODE = 512;
+  static const SUPPORT_AWAY_MODE = 1024;
+  static const SUPPORT_AUX_HEAT = 2048;
+  static const SUPPORT_ON_OFF = 4096;
+
+  bool get supportTargetTemperature => ((attributes["supported_features"] &
+          ClimateEntity.SUPPORT_TARGET_TEMPERATURE) ==
+      ClimateEntity.SUPPORT_TARGET_TEMPERATURE);
+  bool get supportTargetTemperatureHigh => ((attributes["supported_features"] &
+          ClimateEntity.SUPPORT_TARGET_TEMPERATURE_HIGH) ==
+      ClimateEntity.SUPPORT_TARGET_TEMPERATURE_HIGH);
+  bool get supportTargetTemperatureLow => ((attributes["supported_features"] &
+          ClimateEntity.SUPPORT_TARGET_TEMPERATURE_LOW) ==
+      ClimateEntity.SUPPORT_TARGET_TEMPERATURE_LOW);
+  bool get supportTargetHumidity => ((attributes["supported_features"] &
+          ClimateEntity.SUPPORT_TARGET_HUMIDITY) ==
+      ClimateEntity.SUPPORT_TARGET_HUMIDITY);
+  bool get supportTargetHumidityHigh => ((attributes["supported_features"] &
+          ClimateEntity.SUPPORT_TARGET_HUMIDITY_HIGH) ==
+      ClimateEntity.SUPPORT_TARGET_HUMIDITY_HIGH);
+  bool get supportTargetHumidityLow => ((attributes["supported_features"] &
+          ClimateEntity.SUPPORT_TARGET_HUMIDITY_LOW) ==
+      ClimateEntity.SUPPORT_TARGET_HUMIDITY_LOW);
+  bool get supportFanMode =>
+      ((attributes["supported_features"] & ClimateEntity.SUPPORT_FAN_MODE) ==
+          ClimateEntity.SUPPORT_FAN_MODE);
+  bool get supportOperationMode => ((attributes["supported_features"] &
+          ClimateEntity.SUPPORT_OPERATION_MODE) ==
+      ClimateEntity.SUPPORT_OPERATION_MODE);
+  bool get supportHoldMode =>
+      ((attributes["supported_features"] & ClimateEntity.SUPPORT_HOLD_MODE) ==
+          ClimateEntity.SUPPORT_HOLD_MODE);
+  bool get supportSwingMode =>
+      ((attributes["supported_features"] & ClimateEntity.SUPPORT_SWING_MODE) ==
+          ClimateEntity.SUPPORT_SWING_MODE);
+  bool get supportAwayMode =>
+      ((attributes["supported_features"] & ClimateEntity.SUPPORT_AWAY_MODE) ==
+          ClimateEntity.SUPPORT_AWAY_MODE);
+  bool get supportAuxHeat =>
+      ((attributes["supported_features"] & ClimateEntity.SUPPORT_AUX_HEAT) ==
+          ClimateEntity.SUPPORT_AUX_HEAT);
+  bool get supportOnOff =>
+      ((attributes["supported_features"] & ClimateEntity.SUPPORT_ON_OFF) ==
+          ClimateEntity.SUPPORT_ON_OFF);
+
+  List<String> get operationList => attributes["operation_list"] != null
+      ? (attributes["operation_list"] as List).cast<String>()
+      : null;
+  List<String> get fanList => attributes["fan_list"] != null
+      ? (attributes["fan_list"] as List).cast<String>()
+      : null;
+  List<String> get swingList => attributes["swing_list"] != null
+      ? (attributes["swing_list"] as List).cast<String>()
+      : null;
+  double get temperature => _getDoubleAttributeValue('temperature');
+  double get targetHigh => _getDoubleAttributeValue('target_temp_high');
+  double get targetLow => _getDoubleAttributeValue('target_temp_low');
+  double get maxTemp => _getDoubleAttributeValue('max_temp') ?? 100.0;
+  double get minTemp => _getDoubleAttributeValue('min_temp') ?? -100.0;
+  double get targetHumidity => _getDoubleAttributeValue('humidity');
+  double get maxHumidity => _getDoubleAttributeValue('max_humidity');
+  double get minHumidity => _getDoubleAttributeValue('min_humidity');
+  String get operationMode => attributes['operation_mode'];
+  String get fanMode => attributes['fan_mode'];
+  String get swingMode => attributes['swing_mode'];
+  bool get awayMode => attributes['away_mode'] == "on";
+  bool get isOff => state == "off";
+  bool get auxHeat => attributes['aux_heat'] == "on";
+
+  ClimateEntity(Map rawData) : super(rawData);
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return ClimateStateWidget();
+  }
+
+  @override
+  Widget _buildAdditionalControlsForPage(BuildContext context) {
+    return ClimateControlWidget();
+  }
+
+  @override
+  double _getDoubleAttributeValue(String attributeName) {
+    var temp1 = attributes["$attributeName"];
+    if (temp1 is int) {
+      return temp1.toDouble();
+    } else if (temp1 is double) {
+      return temp1;
+    } else {
+      return null;
+    }
+  }
+
+}
+
+class SelectEntity extends Entity {
+  List<String> get listOptions => attributes["options"] != null
+      ? (attributes["options"] as List).cast<String>()
+      : [];
+
+  SelectEntity(Map rawData) : super(rawData);
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return SelectControlWidget();
+  }
+}
+
+class DateTimeEntity extends Entity {
+  bool get hasDate => attributes["has_date"] ?? false;
+  bool get hasTime => attributes["has_time"] ?? false;
+  int get year => attributes["year"] ?? 1970;
+  int get month => attributes["month"] ?? 1;
+  int get day => attributes["day"] ?? 1;
+  int get hour => attributes["hour"] ?? 0;
+  int get minute => attributes["minute"] ?? 0;
+  int get second => attributes["second"] ?? 0;
+  String get formattedState => _getFormattedState();
+  DateTime get dateTimeState => _getDateTimeState();
+
+  DateTimeEntity(Map rawData) : super(rawData);
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return DateTimeStateWidget();
+  }
+
+  DateTime _getDateTimeState() {
+    return DateTime(
+        this.year, this.month, this.day, this.hour, this.minute, this.second);
+  }
+
+  String _getFormattedState() {
+    String formattedState = "";
+    if (this.hasDate) {
+      formattedState += formatDate(dateTimeState, [M, ' ', d, ', ', yyyy]);
+    }
+    if (this.hasTime) {
+      formattedState += " " + formatDate(dateTimeState, [HH, ':', nn]);
+    }
+    return formattedState;
+  }
+
+  void setNewState(newValue) {
+    eventBus
+        .fire(new ServiceCallEvent(domain, "set_datetime", entityId, newValue));
+  }
+}
+
+class CoverEntity extends Entity {
+  @override
+  double widgetHeight = 38.0;
+
+  static const SUPPORT_OPEN = 1;
+  static const SUPPORT_CLOSE = 2;
+  static const SUPPORT_SET_POSITION = 4;
+  static const SUPPORT_STOP = 8;
+  static const SUPPORT_OPEN_TILT = 16;
+  static const SUPPORT_CLOSE_TILT = 32;
+  static const SUPPORT_STOP_TILT = 64;
+  static const SUPPORT_SET_TILT_POSITION = 128;
+
+  bool get supportOpen => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_OPEN) ==
+      CoverEntity.SUPPORT_OPEN);
+  bool get supportClose => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_CLOSE) ==
+      CoverEntity.SUPPORT_CLOSE);
+  bool get supportSetPosition => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_SET_POSITION) ==
+      CoverEntity.SUPPORT_SET_POSITION);
+  bool get supportStop => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_STOP) ==
+      CoverEntity.SUPPORT_STOP);
+
+  bool get supportOpenTilt => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_OPEN_TILT) ==
+      CoverEntity.SUPPORT_OPEN_TILT);
+  bool get supportCloseTilt => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_CLOSE_TILT) ==
+      CoverEntity.SUPPORT_CLOSE_TILT);
+  bool get supportStopTilt => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_STOP_TILT) ==
+      CoverEntity.SUPPORT_STOP_TILT);
+  bool get supportSetTiltPosition => ((attributes["supported_features"] &
+  CoverEntity.SUPPORT_SET_TILT_POSITION) ==
+      CoverEntity.SUPPORT_SET_TILT_POSITION);
+
+
+  double get currentPosition => _getDoubleAttributeValue('current_position');
+  double get currentTiltPosition => _getDoubleAttributeValue('current_tilt_position');
+  bool get canBeOpened => ((state == "closed") || (state == "closing") || (state == "opening"));
+  bool get canBeClosed => ((state == "open") || (state == "opening")|| (state == "closing"));
+  bool get canTiltBeOpened => currentPosition < 100;
+  bool get canTiltBeClosed => currentPosition > 0;
+
+  CoverEntity(Map rawData) : super(rawData);
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return CoverEntityControlState();
+  }
+
+  @override
+  Widget _buildAdditionalControlsForPage(BuildContext context) {
+    return CoverControlWidget();
+  }
+
+}

lib/entity_class/stateful_widgets.dart

@@ -0,0 +1,954 @@
+part of '../main.dart';
+
+class SwitchControlWidget extends StatefulWidget {
+  @override
+  _SwitchControlWidgetState createState() => _SwitchControlWidgetState();
+}
+
+class _SwitchControlWidgetState extends State<SwitchControlWidget> {
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  void _setNewState(newValue, Entity entity) {
+    setState(() {
+      entity.assumedState = newValue ? 'on' : 'off';
+    });
+    Timer(Duration(seconds: 2), (){
+      setState(() {
+        entity.assumedState = entity.state;
+      });
+    });
+    eventBus.fire(new ServiceCallEvent(
+        entity.domain, (newValue as bool) ? "turn_on" : "turn_off", entity.entityId, null));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    return Switch(
+      value: entityModel.entity.assumedState == 'on',
+      onChanged: ((switchState) {
+        _setNewState(switchState, entityModel.entity);
+      }),
+    );
+  }
+}
+
+class ButtonControlWidget extends StatefulWidget {
+  @override
+  _ButtonControlWidgetState createState() => _ButtonControlWidgetState();
+}
+
+class _ButtonControlWidgetState extends State<ButtonControlWidget> {
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  void _setNewState(Entity entity) {
+    eventBus.fire(new ServiceCallEvent(entity.domain, "turn_on", entity.entityId, null));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    return FlatButton(
+      onPressed: (() {
+        _setNewState(entityModel.entity);
+      }),
+      child: Text(
+        "EXECUTE",
+        textAlign: TextAlign.right,
+        style:
+        new TextStyle(fontSize: entityModel.entity.stateFontSize, color: Colors.blue),
+      ),
+    );
+  }
+}
+
+class TextControlWidget extends StatefulWidget {
+
+  TextControlWidget({Key key}) : super(key: key);
+
+  @override
+  _TextControlWidgetState createState() => _TextControlWidgetState();
+}
+
+class _TextControlWidgetState extends State<TextControlWidget> {
+  String _tmpValue;
+  String _entityState;
+  String _entityDomain;
+  String _entityId;
+  int _minLength;
+  int _maxLength;
+  FocusNode _focusNode = FocusNode();
+  bool validValue = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _focusNode.addListener(_focusListener);
+  }
+
+  void setNewState(newValue, domain, entityId) {
+    if (validate(newValue, _minLength, _maxLength)) {
+      eventBus.fire(new ServiceCallEvent(domain, "set_value", entityId,
+          {"value": "$newValue"}));
+    } else {
+      setState(() {
+        _tmpValue = _entityState;
+      });
+    }
+  }
+
+  bool validate(newValue, minLength, maxLength) {
+    if (newValue is String) {
+      validValue = (newValue.length >= minLength) &&
+          (maxLength == -1 ||
+              (newValue.length <= maxLength));
+    } else {
+      validValue = true;
+    }
+    return validValue;
+  }
+
+  void _focusListener() {
+    if (!_focusNode.hasFocus && (_tmpValue != _entityState)) {
+      setNewState(_tmpValue, _entityDomain, _entityId);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final TextEntity entity = entityModel.entity;
+    _entityState = entity.state;
+    _entityDomain = entity.domain;
+    _entityId = entity.entityId;
+    _minLength = entity.valueMinLength;
+    _maxLength = entity.valueMaxLength;
+
+    if (!_focusNode.hasFocus && (_tmpValue != entity.state)) {
+      _tmpValue = entity.state;
+    }
+    if (entity.isTextField || entity.isPasswordField) {
+      return Expanded(
+        //width: Entity.INPUT_WIDTH,
+        child: TextField(
+            focusNode: _focusNode,
+            obscureText: entity.isPasswordField,
+            controller: new TextEditingController.fromValue(
+                new TextEditingValue(
+                    text: _tmpValue,
+                    selection:
+                    new TextSelection.collapsed(offset: _tmpValue.length)
+                )
+            ),
+            onChanged: (value) {
+              _tmpValue = value;
+            }),
+      );
+    } else {
+      TheLogger.log("Warning", "Unsupported input mode for ${entity.entityId}");
+      return SimpleEntityState();
+    }
+  }
+
+  @override
+  void dispose() {
+    _focusNode.removeListener(_focusListener);
+    _focusNode.dispose();
+    super.dispose();
+  }
+
+}
+
+class SliderControlWidget extends StatefulWidget {
+
+  final bool expanded;
+
+  SliderControlWidget({Key key, @required this.expanded}) : super(key: key);
+
+  @override
+  _SliderControlWidgetState createState() => _SliderControlWidgetState();
+}
+
+class _SliderControlWidgetState extends State<SliderControlWidget> {
+  int _multiplier = 1;
+
+  void setNewState(newValue, domain, entityId) {
+    eventBus.fire(new ServiceCallEvent(domain, "set_value", entityId,
+        {"value": "${newValue.toString()}"}));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final SliderEntity entity = entityModel.entity;
+    if (entity.valueStep < 1) {
+      _multiplier = 10;
+    } else if (entity.valueStep < 0.1) {
+      _multiplier = 100;
+    }
+    Widget slider = Slider(
+      min: entity.minValue * _multiplier,
+      max: entity.maxValue * _multiplier,
+      value: (entity.doubleState <= entity.maxValue) &&
+          (entity.doubleState >= entity.minValue)
+          ? entity.doubleState * _multiplier
+          : entity.minValue * _multiplier,
+      onChanged: (value) {
+        setState(() {
+          entity.state =
+              (value.roundToDouble() / _multiplier).toString();
+        });
+        eventBus.fire(new StateChangedEvent(entity.entityId,
+            (value.roundToDouble() / _multiplier).toString(), true));
+
+      },
+      onChangeEnd: (value) {
+        setNewState(value.roundToDouble() / _multiplier, entity.domain, entity.entityId);
+      },
+    );
+    if (widget.expanded) {
+      return Expanded(
+        child: slider,
+      );
+    } else {
+      return slider;
+    }
+  }
+}
+
+class ClimateControlWidget extends StatefulWidget {
+
+  ClimateControlWidget({Key key}) : super(key: key);
+
+  @override
+  _ClimateControlWidgetState createState() => _ClimateControlWidgetState();
+}
+
+class _ClimateControlWidgetState extends State<ClimateControlWidget> {
+
+  bool _showPending = false;
+  bool _changedHere = false;
+  Timer _resetTimer;
+  double _tmpTemperature = 0.0;
+  double _tmpTargetLow = 0.0;
+  double _tmpTargetHigh = 0.0;
+  double _tmpTargetHumidity = 0.0;
+  String _tmpOperationMode;
+  String _tmpFanMode;
+  String _tmpSwingMode;
+  bool _tmpAwayMode = false;
+  bool _tmpIsOff = false;
+  bool _tmpAuxHeat = false;
+
+  void _resetVars(ClimateEntity entity) {
+    _tmpTemperature = entity.temperature;
+    _tmpTargetHigh = entity.targetHigh;
+    _tmpTargetLow = entity.targetLow;
+    _tmpOperationMode = entity.operationMode;
+    _tmpFanMode = entity.fanMode;
+    _tmpSwingMode = entity.swingMode;
+    _tmpAwayMode = entity.awayMode;
+    _tmpIsOff = entity.isOff;
+    _tmpAuxHeat = entity.auxHeat;
+    _tmpTargetHumidity = entity.targetHumidity;
+
+    _showPending = false;
+    _changedHere = false;
+  }
+
+  void _temperatureUp(ClimateEntity entity, double step) {
+    _tmpTemperature = ((_tmpTemperature + step) <= entity.maxTemp) ? _tmpTemperature + step : entity.maxTemp;
+    _setTemperature(entity);
+  }
+
+  void _temperatureDown(ClimateEntity entity, double step) {
+    _tmpTemperature = ((_tmpTemperature - step) >= entity.minTemp) ? _tmpTemperature - step : entity.minTemp;
+    _setTemperature(entity);
+  }
+
+  void _targetLowUp(ClimateEntity entity, double step) {
+    _tmpTargetLow = ((_tmpTargetLow + step) <= entity.maxTemp) ? _tmpTargetLow + step : entity.maxTemp;
+    _setTargetTemp(entity);
+  }
+
+  void _targetLowDown(ClimateEntity entity, double step) {
+    _tmpTargetLow = ((_tmpTargetLow - step) >= entity.minTemp) ? _tmpTargetLow - step : entity.minTemp;
+    _setTargetTemp(entity);
+  }
+
+  void _targetHighUp(ClimateEntity entity, double step) {
+    _tmpTargetHigh = ((_tmpTargetHigh + step) <= entity.maxTemp) ? _tmpTargetHigh + step : entity.maxTemp;
+    _setTargetTemp(entity);
+  }
+
+  void _targetHighDown(ClimateEntity entity, double step) {
+    _tmpTargetHigh = ((_tmpTargetHigh - step) >= entity.minTemp) ? _tmpTargetHigh - step : entity.minTemp;
+    _setTargetTemp(entity);
+  }
+
+  void _setTemperature(ClimateEntity entity) {
+    setState(() {
+      _tmpTemperature = double.parse(_tmpTemperature.toStringAsFixed(1));
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_temperature", entity.entityId,{"temperature": "${_tmpTemperature.toStringAsFixed(1)}"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setTargetTemp(ClimateEntity entity) {
+    setState(() {
+      _tmpTargetLow = double.parse(_tmpTargetLow.toStringAsFixed(1));
+      _tmpTargetHigh = double.parse(_tmpTargetHigh.toStringAsFixed(1));
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_temperature", entity.entityId,{"target_temp_high": "${_tmpTargetHigh.toStringAsFixed(1)}", "target_temp_low": "${_tmpTargetLow.toStringAsFixed(1)}"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setTargetHumidity(ClimateEntity entity, double value) {
+    setState(() {
+      _tmpTargetHumidity = value.roundToDouble();
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_humidity", entity.entityId,{"humidity": "$_tmpTargetHumidity"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setOperationMode(ClimateEntity entity, value) {
+    setState(() {
+      _tmpOperationMode = value;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_operation_mode", entity.entityId,{"operation_mode": "$_tmpOperationMode"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setSwingMode(ClimateEntity entity, value) {
+    setState(() {
+      _tmpSwingMode = value;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_swing_mode", entity.entityId,{"swing_mode": "$_tmpSwingMode"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setFanMode(ClimateEntity entity, value) {
+    setState(() {
+      _tmpFanMode = value;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_fan_mode", entity.entityId,{"fan_mode": "$_tmpFanMode"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setAwayMode(ClimateEntity entity, value) {
+    setState(() {
+      _tmpAwayMode = value;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_away_mode", entity.entityId,{"away_mode": "${_tmpAwayMode ? 'on' : 'off'}"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setOnOf(ClimateEntity entity, value) {
+    setState(() {
+      _tmpIsOff = !value;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "${_tmpIsOff ? 'turn_off' : 'turn_on'}", entity.entityId, null));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _setAuxHeat(ClimateEntity entity, value) {
+    setState(() {
+      _tmpAuxHeat = value;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_aux_heat", entity.entityId, {"aux_heat": "$_tmpAuxHeat"}));
+      _resetStateTimer(entity);
+    });
+  }
+
+  void _resetStateTimer(ClimateEntity entity) {
+    if (_resetTimer!=null) {
+      _resetTimer.cancel();
+    }
+    _resetTimer = Timer(Duration(seconds: 3), () {
+      setState(() {});
+      _resetVars(entity);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final ClimateEntity entity = entityModel.entity;
+    if (_changedHere) {
+      _showPending = (_tmpTemperature != entity.temperature);
+      _changedHere = false;
+    } else {
+      _resetTimer?.cancel();
+      _resetVars(entity);
+    }
+    return Padding(
+      padding: EdgeInsets.fromLTRB(entity.leftWidgetPadding, entity.rowPadding, entity.rightWidgetPadding, 0.0),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          _buildOnOffControl(entity),
+          _buildTemperatureControls(entity),
+          _buildHumidityControls(entity),
+          _buildOperationControl(entity),
+          _buildFanControl(entity),
+          _buildSwingControl(entity),
+          _buildAwayModeControl(entity),
+          _buildAuxHeatControl(entity)
+        ],
+      ),
+    );
+  }
+
+  Widget _buildAwayModeControl(ClimateEntity entity) {
+    if (entity.supportAwayMode) {
+      return Row(
+        children: <Widget>[
+          Expanded(
+            child: Text(
+              "Away mode",
+              style: TextStyle(
+                  fontSize: entity.stateFontSize
+              ),
+            ),
+          ),
+          Switch(
+            onChanged: (value) => _setAwayMode(entity, value),
+            value: _tmpAwayMode,
+          )
+        ],
+      );
+    } else {
+      return Container(height: 0.0, width: 0.0,);
+    }
+  }
+
+  Widget _buildOnOffControl(ClimateEntity entity) {
+    if (entity.supportOnOff) {
+      return Row(
+        children: <Widget>[
+          Expanded(
+            child: Text(
+              "On / Off",
+              style: TextStyle(
+                  fontSize: entity.stateFontSize
+              ),
+            ),
+          ),
+          Switch(
+            onChanged: (value) => _setOnOf(entity, value),
+            value: !_tmpIsOff,
+          )
+        ],
+      );
+    } else {
+      return Container(height: 0.0, width: 0.0,);
+    }
+  }
+
+  Widget _buildAuxHeatControl(ClimateEntity entity) {
+    if (entity.supportAuxHeat ) {
+      return Row(
+        children: <Widget>[
+          Expanded(
+            child: Text(
+              "Aux heat",
+              style: TextStyle(
+                  fontSize: entity.stateFontSize
+              ),
+            ),
+          ),
+          Switch(
+            onChanged: (value) => _setAuxHeat(entity, value),
+            value: _tmpAuxHeat,
+          )
+        ],
+      );
+    } else {
+      return Container(height: 0.0, width: 0.0,);
+    }
+  }
+
+  Widget _buildOperationControl(ClimateEntity entity) {
+    if (entity.supportOperationMode) {
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          Text("Operation", style: TextStyle(
+              fontSize: entity.stateFontSize
+          )),
+          DropdownButton<String>(
+            value: "$_tmpOperationMode",
+            iconSize: 30.0,
+            style: TextStyle(
+              fontSize: entity.largeFontSize,
+              color: Colors.black,
+            ),
+            items: entity.operationList.map((String value) {
+              return new DropdownMenuItem<String>(
+                value: value,
+                child: new Text(value),
+              );
+            }).toList(),
+            onChanged: (mode) => _setOperationMode(entity, mode),
+          ),
+          Container(height: entity.rowPadding,)
+        ],
+      );
+    } else {
+      return Container(height: 0.0, width: 0.0);
+    }
+  }
+
+  Widget _buildFanControl(ClimateEntity entity) {
+    if (entity.supportFanMode) {
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          Text("Fan mode", style: TextStyle(
+              fontSize: entity.stateFontSize
+          )),
+          DropdownButton<String>(
+            value: "$_tmpFanMode",
+            iconSize: 30.0,
+            style: TextStyle(
+              fontSize: entity.largeFontSize,
+              color: Colors.black,
+            ),
+            items: entity.fanList.map((String value) {
+              return new DropdownMenuItem<String>(
+                value: value,
+                child: new Text(value),
+              );
+            }).toList(),
+            onChanged: (mode) => _setFanMode(entity, mode),
+          ),
+          Container(height: entity.rowPadding,)
+        ],
+      );
+    } else {
+      return Container(height: 0.0, width: 0.0);
+    }
+  }
+
+  Widget _buildSwingControl(ClimateEntity entity) {
+    if (entity.supportSwingMode) {
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          Text("Swing mode", style: TextStyle(
+              fontSize: entity.stateFontSize
+          )),
+          DropdownButton<String>(
+            value: "$_tmpSwingMode",
+            iconSize: 30.0,
+            style: TextStyle(
+              fontSize: entity.largeFontSize,
+              color: Colors.black,
+            ),
+            items: entity.swingList.map((String value) {
+              return new DropdownMenuItem<String>(
+                value: value,
+                child: new Text(value),
+              );
+            }).toList(),
+            onChanged: (mode) => _setSwingMode(entity, mode),
+          ),
+          Container(height: entity.rowPadding,)
+        ],
+      );
+    } else {
+      return Container(height: 0.0, width: 0.0);
+    }
+  }
+
+  Widget _buildTemperatureControls(ClimateEntity entity) {
+    List<Widget> result = [];
+    if (entity.supportTargetTemperature) {
+      result.addAll(<Widget>[
+        Text(
+          "$_tmpTemperature",
+          style: TextStyle(
+              fontSize: entity.largeFontSize,
+              color: _showPending ? Colors.red : Colors.black
+          ),
+        ),
+        Column(
+          children: <Widget>[
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-up')),
+              iconSize: 30.0,
+              onPressed: () => _temperatureUp(entity, 0.1),
+            ),
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-down')),
+              iconSize: 30.0,
+              onPressed: () => _temperatureDown(entity, 0.1),
+            )
+          ],
+        ),
+        Column(
+          children: <Widget>[
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-double-up')),
+              iconSize: 30.0,
+              onPressed: () => _temperatureUp(entity, 0.5),
+            ),
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-double-down')),
+              iconSize: 30.0,
+              onPressed: () => _temperatureDown(entity, 0.5),
+            )
+          ],
+        )
+      ]);
+    } else if (entity.supportTargetTemperatureHigh && entity.supportTargetTemperatureLow) {
+      result.addAll(<Widget>[
+        Text(
+          "$_tmpTargetLow",
+          style: TextStyle(
+              fontSize: entity.largeFontSize,
+              color: _showPending ? Colors.red : Colors.black
+          ),
+        ),
+        Column(
+          children: <Widget>[
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-up')),
+              iconSize: 30.0,
+              onPressed: () => _targetLowUp(entity, 0.1),
+            ),
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-down')),
+              iconSize: 30.0,
+              onPressed: () => _targetLowDown(entity, 0.1),
+            )
+          ],
+        ),
+        Column(
+          children: <Widget>[
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-double-up')),
+              iconSize: 30.0,
+              onPressed: () => _targetLowUp(entity, 0.5),
+            ),
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-double-down')),
+              iconSize: 30.0,
+              onPressed: () => _targetLowDown(entity, 0.5),
+            )
+          ],
+        ),
+        Expanded(
+          child: Container(height: 10.0),
+        ),
+        Text(
+          "$_tmpTargetHigh",
+          style: TextStyle(
+              fontSize: entity.largeFontSize,
+              color: _showPending ? Colors.red : Colors.black
+          ),
+        ),
+        Column(
+          children: <Widget>[
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-up')),
+              iconSize: 30.0,
+              onPressed: () => _targetHighUp(entity, 0.1),
+            ),
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-down')),
+              iconSize: 30.0,
+              onPressed: () => _targetHighDown(entity, 0.1),
+            )
+          ],
+        ),
+        Column(
+          children: <Widget>[
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-double-up')),
+              iconSize: 30.0,
+              onPressed: () => _targetHighUp(entity, 0.5),
+            ),
+            IconButton(
+              icon: Icon(MaterialDesignIcons.createIconDataFromIconName('mdi:chevron-double-down')),
+              iconSize: 30.0,
+              onPressed: () => _targetHighDown(entity, 0.5),
+            )
+          ],
+        )
+      ]);
+    } else if (entity.supportTargetTemperatureHigh || entity.supportTargetTemperatureLow) {
+      result.add(Text("Unsupported temperature control. Please, report an issue."));
+    }
+    if (result.isNotEmpty) {
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          Text("Target temperature", style: TextStyle(
+              fontSize: entity.stateFontSize
+          )),
+          Row(
+            crossAxisAlignment: CrossAxisAlignment.center,
+            children: result,
+          )
+        ],
+      );
+    } else {
+      return Container(height: 0.0, width: 0.0,);
+    }
+  }
+
+  Widget _buildHumidityControls(ClimateEntity entity) {
+    List<Widget> result = [];
+    if (entity.supportTargetHumidity) {
+      result.addAll(<Widget>[
+        Text(
+          "$_tmpTargetHumidity%",
+          style: TextStyle(fontSize: entity.largeFontSize),
+        ),
+        Expanded(
+          child: Slider(
+            value: _tmpTargetHumidity,
+            max: entity.maxHumidity,
+            min: entity.minHumidity,
+            onChanged: ((double val) {
+              setState(() {
+                _changedHere = true;
+                _tmpTargetHumidity = val.roundToDouble();
+              });
+            }),
+            onChangeEnd: (double v) => _setTargetHumidity(entity, v),
+          ),
+        )
+      ]);
+    }
+    if (result.isNotEmpty) {
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          Padding(
+            padding: EdgeInsets.fromLTRB(
+                0.0, entity.rowPadding, 0.0, entity.rowPadding),
+            child: Text("Target humidity", style: TextStyle(
+                fontSize: entity.stateFontSize
+            )),
+          ),
+          Row(
+            crossAxisAlignment: CrossAxisAlignment.center,
+            children: result,
+          ),
+          Container(
+            height: entity.rowPadding,
+          )
+        ],
+      );
+    } else {
+      return Container(
+        width: 0.0,
+        height: 0.0,
+      );
+    }
+  }
+
+
+  @override
+  void dispose() {
+    _resetTimer?.cancel();
+    super.dispose();
+  }
+
+}
+
+class SelectControlWidget extends StatefulWidget {
+
+  SelectControlWidget({Key key}) : super(key: key);
+
+  @override
+  _SelectControlWidgetState createState() => _SelectControlWidgetState();
+}
+
+class _SelectControlWidgetState extends State<SelectControlWidget> {
+
+  void setNewState(domain, entityId, newValue) {
+    eventBus.fire(new ServiceCallEvent(domain, "select_option", entityId,
+        {"option": "$newValue"}));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final SelectEntity entity = entityModel.entity;
+    Widget ctrl;
+    if (entity.listOptions.isNotEmpty) {
+      ctrl = DropdownButton<String>(
+        value: entity.state,
+        items: entity.listOptions.map((String value) {
+          return new DropdownMenuItem<String>(
+            value: value,
+            child: new Text(value),
+          );
+        }).toList(),
+        onChanged: (_) {
+          setNewState(entity.domain, entity.entityId,_);
+        },
+      );
+    } else {
+      ctrl = Text('---');
+    }
+    return Expanded(
+      //width: Entity.INPUT_WIDTH,
+      child: ctrl,
+    );
+  }
+
+
+}
+
+class CoverControlWidget extends StatefulWidget {
+
+  CoverControlWidget({Key key}) : super(key: key);
+
+  @override
+  _CoverControlWidgetState createState() => _CoverControlWidgetState();
+}
+
+class _CoverControlWidgetState extends State<CoverControlWidget> {
+
+  double _tmpPosition = 0.0;
+  double _tmpTiltPosition = 0.0;
+  bool _changedHere = false;
+
+  void _setNewPosition(CoverEntity entity, double position) {
+    setState(() {
+      _tmpPosition = position.roundToDouble();
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_cover_position", entity.entityId,{"position": _tmpPosition.round()}));
+    });
+  }
+
+  void _setNewTiltPosition(CoverEntity entity, double position) {
+    setState(() {
+      _tmpTiltPosition = position.roundToDouble();
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(entity.domain, "set_cover_tilt_position", entity.entityId,{"tilt_position": _tmpTiltPosition.round()}));
+    });
+  }
+
+  void _resetVars(CoverEntity entity) {
+    _tmpPosition = entity.currentPosition;
+    _tmpTiltPosition = entity.currentTiltPosition;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final CoverEntity entity = entityModel.entity;
+    if (_changedHere) {
+      _changedHere = false;
+    } else {
+      _resetVars(entity);
+    }
+    return Padding(
+      padding: EdgeInsets.fromLTRB(entity.leftWidgetPadding, entity.rowPadding, entity.rightWidgetPadding, 0.0),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          _buildPositionControls(entity),
+          _buildTiltControls(entity)
+        ],
+      ),
+    );
+  }
+
+  Widget _buildPositionControls(CoverEntity entity) {
+    if (entity.supportSetPosition) {
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: <Widget>[
+          Padding(
+            padding: EdgeInsets.fromLTRB(
+                0.0, entity.rowPadding, 0.0, entity.rowPadding),
+            child: Text("Position", style: TextStyle(
+                fontSize: entity.stateFontSize
+            )),
+          ),
+          Slider(
+            value: _tmpPosition,
+            min: 0.0,
+            max: 100.0,
+            divisions: 10,
+            onChanged: (double value) {
+              setState(() {
+                _tmpPosition = value.roundToDouble();
+                _changedHere = true;
+              });
+            },
+            onChangeEnd: (double value) => _setNewPosition(entity, value),
+          ),
+          Container(height: entity.rowPadding,)
+        ],
+      );
+    } else {
+      return Container(width: 0.0, height: 0.0);
+    }
+  }
+
+  Widget _buildTiltControls(CoverEntity entity) {
+    List<Widget> controls = [];
+    if (entity.supportCloseTilt || entity.supportOpenTilt || entity.supportStopTilt) {
+      controls.add(
+        CoverEntityTiltControlState()
+      );
+    }
+    if (entity.supportSetTiltPosition) {
+      controls.addAll(<Widget>[
+        Slider(
+          value: _tmpTiltPosition,
+          min: 0.0,
+          max: 100.0,
+          divisions: 10,
+          onChanged: (double value) {
+            setState(() {
+              _tmpTiltPosition = value.roundToDouble();
+              _changedHere = true;
+            });
+          },
+          onChangeEnd: (double value) => _setNewTiltPosition(entity, value),
+        ),
+        Container(height: entity.rowPadding,)
+      ]);
+    }
+    if (controls.isNotEmpty) {
+      controls.insert(0, Padding(
+        padding: EdgeInsets.fromLTRB(
+            0.0, entity.rowPadding, 0.0, entity.rowPadding),
+        child: Text("Tilt position", style: TextStyle(
+            fontSize: entity.stateFontSize
+        )),
+      ));
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: controls,
+      );
+    } else {
+      return Container(width: 0.0, height: 0.0);
+    }
+  }
+
+}

lib/entity_class/stateless_widgets.dart

@@ -0,0 +1,569 @@
+part of '../main.dart';
+
+class EntityWidgetsSizes {
+
+}
+
+class EntityModel extends InheritedWidget {
+
+  const EntityModel({
+    Key key,
+    @required this.entity,
+    @required this.handleTap,
+    @required Widget child,
+  }) : super(key: key, child: child);
+
+  final Entity entity;
+  final bool handleTap;
+
+  static EntityModel of(BuildContext context) {
+    return context.inheritFromWidgetOfExactType(EntityModel);
+  }
+
+  @override
+  bool updateShouldNotify(InheritedWidget oldWidget) {
+    return true;
+  }
+
+}
+
+class DefaultEntityContainer extends StatelessWidget {
+
+  DefaultEntityContainer({
+    Key key,
+    @required this.state,
+  }) : super(key: key);
+
+  final Widget state;
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    return SizedBox(
+      height: entityModel.entity.widgetHeight,
+      child: Row(
+        children: <Widget>[
+          EntityIcon(),
+          Expanded(
+            child: EntityName(),
+          ),
+          state
+        ],
+      ),
+    );
+  }
+
+}
+
+class EntityPageContainer extends StatelessWidget {
+
+  EntityPageContainer({Key key, @required this.children}) : super(key: key);
+
+  final List<Widget> children;
+
+  @override
+  Widget build(BuildContext context) {
+    return ListView(
+      children: children,
+    );
+  }
+
+}
+
+class SimpleEntityState extends StatelessWidget {
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    return Padding(
+        padding:
+        EdgeInsets.fromLTRB(0.0, 0.0, entityModel.entity.rightWidgetPadding, 0.0),
+        child: GestureDetector(
+          child: Text(
+              "${entityModel.entity.state}${entityModel.entity.unitOfMeasurement}",
+              textAlign: TextAlign.right,
+              style: new TextStyle(
+                fontSize: entityModel.entity.stateFontSize,
+              )),
+          onTap: () => entityModel.handleTap ? eventBus.fire(new ShowEntityPageEvent(entityModel.entity)) : null,
+        )
+    );
+  }
+
+}
+
+class EntityName extends StatelessWidget {
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    return GestureDetector(
+      child: Padding(
+        padding: EdgeInsets.only(right: 10.0),
+        child: Text(
+          "${entityModel.entity.displayName}",
+          overflow: TextOverflow.ellipsis,
+          softWrap: false,
+          style: TextStyle(fontSize: entityModel.entity.nameFontSize),
+        ),
+      ),
+      onTap: () => entityModel.handleTap ? eventBus.fire(new ShowEntityPageEvent(entityModel.entity)) : null,
+    );
+  }
+
+}
+
+class EntityIcon extends StatelessWidget {
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    return GestureDetector(
+      child: Padding(
+        padding: EdgeInsets.fromLTRB(entityModel.entity.leftWidgetPadding, 0.0, 12.0, 0.0),
+        //TODO: move createIconWidgetFromEntityData into this widget
+        child: MaterialDesignIcons.createIconWidgetFromEntityData(
+            entityModel.entity,
+            entityModel.entity.iconSize,
+            Entity.STATE_ICONS_COLORS[entityModel.entity.state] ?? Entity.STATE_ICONS_COLORS["default"]),
+      ),
+      onTap: () => entityModel.handleTap ? eventBus.fire(new ShowEntityPageEvent(entityModel.entity)) : null,
+    );
+  }
+
+}
+
+class LastUpdatedWidget extends StatelessWidget {
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    return Padding(
+      padding: EdgeInsets.fromLTRB(
+          entityModel.entity.leftWidgetPadding, 0.0, 0.0, 0.0),
+      child: Text(
+        '${entityModel.entity.lastUpdated}',
+        textAlign: TextAlign.left,
+        style:
+        TextStyle(fontSize: entityModel.entity.smallFontSize, color: Colors.black26),
+      ),
+    );
+  }
+
+}
+
+class EntityAttributesList extends StatelessWidget {
+
+  EntityAttributesList({Key key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    List<Widget> attrs = [];
+    if ((entityModel.entity.attributesToShow == null) || (entityModel.entity.attributesToShow.contains("all"))) {
+      entityModel.entity.attributes.forEach((name, value){
+        attrs.add(
+            _buildSingleAttribute(entityModel.entity, "$name", "$value")
+        );
+      });
+    } else {
+      entityModel.entity.attributesToShow.forEach((String attr) {
+        String attrValue = entityModel.entity.getAttribute("$attr");
+        if (attrValue != null) {
+          attrs.add(
+              _buildSingleAttribute(entityModel.entity, "$attr", "$attrValue")
+          );
+        }
+      });
+    }
+    return Column(
+      children: attrs,
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisSize: MainAxisSize.min,
+    );
+  }
+
+  Widget _buildSingleAttribute(Entity entity, String name, String value) {
+    return Row(
+      children: <Widget>[
+        Expanded(
+          child: Padding(
+            padding: EdgeInsets.fromLTRB(entity.leftWidgetPadding, entity.rowPadding, 0.0, 0.0),
+            child: Text(
+              "$name",
+              textAlign: TextAlign.left,
+            ),
+          ),
+        ),
+        Expanded(
+          child: Padding(
+            padding: EdgeInsets.fromLTRB(0.0, entity.rowPadding, entity.rightWidgetPadding, 0.0),
+            child: Text(
+              "$value",
+              textAlign: TextAlign.right,
+            ),
+          ),
+        )
+      ],
+    );
+  }
+}
+
+class Badge extends StatelessWidget {
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    double iconSize = 26.0;
+    Widget badgeIcon;
+    String onBadgeTextValue;
+    Color iconColor = Entity.badgeColors[entityModel.entity.domain] ?? Entity.badgeColors["default"];
+    switch (entityModel.entity.domain) {
+      case "sun": {
+        badgeIcon = entityModel.entity.state == "below_horizon" ?
+        Icon(
+          MaterialDesignIcons.createIconDataFromIconCode(0xf0dc),
+          size: iconSize,
+        ) :
+        Icon(
+          MaterialDesignIcons.createIconDataFromIconCode(0xf5a8),
+          size: iconSize,
+        );
+        break;
+      }
+      case "sensor": {
+        onBadgeTextValue = entityModel.entity.unitOfMeasurement;
+        badgeIcon = Center(
+          child: Text(
+            "${entityModel.entity.state}",
+            overflow: TextOverflow.fade,
+            softWrap: false,
+            textAlign: TextAlign.center,
+            style: TextStyle(fontSize: 17.0),
+          ),
+        );
+        break;
+      }
+      case "device_tracker": {
+        badgeIcon = MaterialDesignIcons.createIconWidgetFromEntityData(entityModel.entity, iconSize,Colors.black);
+        onBadgeTextValue = entityModel.entity.state;
+        break;
+      }
+      default: {
+        badgeIcon = MaterialDesignIcons.createIconWidgetFromEntityData(entityModel.entity, iconSize,Colors.black);
+      }
+    }
+    Widget onBadgeText;
+    if (onBadgeTextValue == null || onBadgeTextValue.length == 0) {
+      onBadgeText = Container(width: 0.0, height: 0.0);
+    } else {
+      onBadgeText = Container(
+          padding: EdgeInsets.fromLTRB(6.0, 2.0, 6.0, 2.0),
+          child: Text("$onBadgeTextValue",
+              style: TextStyle(fontSize: 12.0, color: Colors.white),
+              textAlign: TextAlign.center, softWrap: false, overflow: TextOverflow.fade),
+          decoration: new BoxDecoration(
+            // Circle shape
+            //shape: BoxShape.circle,
+            color: iconColor,
+            borderRadius: BorderRadius.circular(9.0),
+          )
+      );
+    }
+    return GestureDetector(
+      child: Column(
+        children: <Widget>[
+          Container(
+            margin: EdgeInsets.fromLTRB(0.0, 10.0, 0.0, 10.0),
+            width: 50.0,
+            height: 50.0,
+            decoration: new BoxDecoration(
+              // Circle shape
+              shape: BoxShape.circle,
+              color: Colors.white,
+              // The border you want
+              border: new Border.all(
+                width: 2.0,
+                color: iconColor,
+              ),
+            ),
+            child: Stack(
+              overflow: Overflow.visible,
+              children: <Widget>[
+                Positioned(
+                  width: 46.0,
+                  height: 46.0,
+                  top: 0.0,
+                  left: 0.0,
+                  child: badgeIcon,
+                ),
+                Positioned(
+                  //width: 50.0,
+                    bottom: -9.0,
+                    left: -10.0,
+                    right: -10.0,
+                    child: Center(
+                      child: onBadgeText,
+                    )
+                )
+              ],
+            ),
+          ),
+          Container(
+            width: 60.0,
+            child: Text(
+              "${entityModel.entity.displayName}",
+              textAlign: TextAlign.center,
+              style: TextStyle(fontSize: 12.0),
+              softWrap: true,
+              maxLines: 3,
+              overflow: TextOverflow.ellipsis,
+            ),
+          ),
+        ],
+      ),
+      onTap: () => eventBus.fire(new ShowEntityPageEvent(entityModel.entity))
+    );
+  }
+
+}
+
+class ClimateStateWidget extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final ClimateEntity entity = entityModel.entity;
+    return Padding(
+        padding:
+        EdgeInsets.fromLTRB(0.0, 0.0, entityModel.entity.rightWidgetPadding, 0.0),
+        child: GestureDetector(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.end,
+            children: <Widget>[
+              Row(
+                children: <Widget>[
+                  Text(
+                      "${entity.state}",
+                      textAlign: TextAlign.right,
+                      style: new TextStyle(
+                        fontWeight: FontWeight.bold,
+                        fontSize: entityModel.entity.stateFontSize,
+                      )),
+                  Text(
+                      entity.supportTargetTemperature ? " ${entity.temperature}" : " ${entity.targetLow} - ${entity.targetHigh}",
+                      textAlign: TextAlign.right,
+                      style: new TextStyle(
+                        fontSize: entityModel.entity.stateFontSize,
+                      ))
+                ],
+              ),
+              Text(
+                  "Currently: ${entity.attributes["current_temperature"]}",
+                  textAlign: TextAlign.right,
+                  style: new TextStyle(
+                      fontSize: entityModel.entity.stateFontSize,
+                      color: Colors.black45
+                  ))
+            ],
+          ),
+          onTap: () => entityModel.handleTap ? eventBus.fire(new ShowEntityPageEvent(entity)) : null,
+        )
+    );
+  }
+
+}
+
+class DateTimeStateWidget extends StatelessWidget {
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final DateTimeEntity entity = entityModel.entity;
+    return Padding(
+        padding:
+        EdgeInsets.fromLTRB(0.0, 0.0, entity.rightWidgetPadding, 0.0),
+        child: GestureDetector(
+          child: Text(
+              "${entity.formattedState}",
+              textAlign: TextAlign.right,
+              style: new TextStyle(
+                fontSize: entity.stateFontSize,
+              )),
+          onTap: () => _handleStateTap(context, entity),
+        )
+    );
+  }
+
+  void _handleStateTap(BuildContext context, DateTimeEntity entity) {
+    if (entity.hasDate) {
+      _showDatePicker(context, entity).then((date) {
+        if (date != null) {
+          if (entity.hasTime) {
+            _showTimePicker(context, entity).then((time){
+              entity.setNewState({"date": "${formatDate(date, [yyyy, '-', mm, '-', dd])}", "time": "${formatDate(DateTime(1970, 1, 1, time.hour, time.minute), [HH, ':', nn])}"});
+            });
+          } else {
+            entity.setNewState({"date": "${formatDate(date, [yyyy, '-', mm, '-', dd])}"});
+          }
+        }
+      });
+    } else if (entity.hasTime) {
+      _showTimePicker(context, entity).then((time){
+        if (time != null) {
+          entity.setNewState({"time": "${formatDate(DateTime(1970, 1, 1, time.hour, time.minute), [HH, ':', nn])}"});
+        }
+      });
+    } else {
+      TheLogger.log("Warning", "${entity.entityId} has no date and no time");
+    }
+  }
+
+  Future _showDatePicker(BuildContext context, DateTimeEntity entity) {
+    return showDatePicker(
+        context: context,
+        initialDate: entity.dateTimeState,
+        firstDate: DateTime(1970),
+        lastDate: DateTime(2037) //Unix timestamp will finish at Jan 19, 2038
+    );
+  }
+
+  Future _showTimePicker(BuildContext context, DateTimeEntity entity) {
+    return showTimePicker(
+        context: context,
+        initialTime: TimeOfDay.fromDateTime(entity.dateTimeState)
+    );
+  }
+
+}
+
+class CoverEntityControlState extends StatelessWidget {
+
+  void _open(CoverEntity entity) {
+    eventBus.fire(new ServiceCallEvent(entity.domain, "open_cover", entity.entityId, null));
+  }
+
+  void _close(CoverEntity entity) {
+    eventBus.fire(new ServiceCallEvent(entity.domain, "close_cover", entity.entityId, null));
+  }
+
+  void _stop(CoverEntity entity) {
+    eventBus.fire(new ServiceCallEvent(entity.domain, "stop_cover", entity.entityId, null));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final CoverEntity entity = entityModel.entity;
+    List<Widget> buttons = [];
+    if (entity.supportOpen) {
+      buttons.add(
+        IconButton(
+            icon: Icon(
+                MaterialDesignIcons.createIconDataFromIconName("mdi:arrow-up"),
+                size: entity.iconSize,
+            ),
+            onPressed: entity.canBeOpened ? () =>_open(entity) : null
+        )
+      );
+    } else {
+      buttons.add(Container(width: entity.iconSize+20.0,));
+    }
+    if (entity.supportStop) {
+      buttons.add(
+          IconButton(
+              icon: Icon(
+                  MaterialDesignIcons.createIconDataFromIconName("mdi:stop"),
+                  size: entity.iconSize,
+              ),
+              onPressed: () => _stop(entity)
+          )
+      );
+    } else {
+      buttons.add(Container(width: entity.iconSize+20.0,));
+    }
+    if (entity.supportClose) {
+      buttons.add(
+          IconButton(
+              icon: Icon(
+                  MaterialDesignIcons.createIconDataFromIconName("mdi:arrow-down"),
+                  size: entity.iconSize,
+              ),
+              onPressed: entity.canBeClosed ? () => _close(entity) : null
+          )
+      );
+    } else {
+      buttons.add(Container(width: entity.iconSize+20.0,));
+    }
+
+    return Row(
+      children: buttons,
+    );
+  }
+
+}
+
+class CoverEntityTiltControlState extends StatelessWidget {
+
+  void _open(CoverEntity entity) {
+    eventBus.fire(new ServiceCallEvent(entity.domain, "open_cover_tilt", entity.entityId, null));
+  }
+
+  void _close(CoverEntity entity) {
+    eventBus.fire(new ServiceCallEvent(entity.domain, "close_cover_tilt", entity.entityId, null));
+  }
+
+  void _stop(CoverEntity entity) {
+    eventBus.fire(new ServiceCallEvent(entity.domain, "stop_cover_tilt", entity.entityId, null));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final CoverEntity entity = entityModel.entity;
+    List<Widget> buttons = [];
+    if (entity.supportOpenTilt) {
+      buttons.add(
+          IconButton(
+              icon: Icon(
+                MaterialDesignIcons.createIconDataFromIconName("mdi:arrow-top-right"),
+                size: entity.iconSize,
+              ),
+              onPressed: entity.canTiltBeOpened ? () =>_open(entity) : null
+          )
+      );
+    } else {
+      buttons.add(Container(width: entity.iconSize+20.0,));
+    }
+    if (entity.supportStopTilt) {
+      buttons.add(
+          IconButton(
+              icon: Icon(
+                MaterialDesignIcons.createIconDataFromIconName("mdi:stop"),
+                size: entity.iconSize,
+              ),
+              onPressed: () => _stop(entity)
+          )
+      );
+    } else {
+      buttons.add(Container(width: entity.iconSize+20.0,));
+    }
+    if (entity.supportCloseTilt) {
+      buttons.add(
+          IconButton(
+              icon: Icon(
+                MaterialDesignIcons.createIconDataFromIconName("mdi:arrow-bottom-left"),
+                size: entity.iconSize,
+              ),
+              onPressed: entity.canTiltBeClosed ? () => _close(entity) : null
+          )
+      );
+    } else {
+      buttons.add(Container(width: entity.iconSize+20.0,));
+    }
+
+    return Row(
+      children: buttons,
+    );
+  }
+
+}

lib/entity_collection.class.dart

@@ -0,0 +1,138 @@
+part of 'main.dart';
+
+class EntityCollection {
+
+  Map<String, Entity> _entities;
+  List<String> viewList;
+
+  bool get isEmpty => _entities.isEmpty;
+
+  EntityCollection() {
+    _entities = {};
+    viewList = [];
+  }
+
+  bool get hasDefaultView => _entities["group.default_view"] != null;
+
+  void parse(List rawData) {
+    _entities.clear();
+    viewList.clear();
+
+    TheLogger.log("Debug","Parsing ${rawData.length} Home Assistant entities");
+    rawData.forEach((rawEntityData) {
+      Entity newEntity = addFromRaw(rawEntityData);
+
+      if (newEntity.isView) {
+        viewList.add(newEntity.entityId);
+      }
+    });
+  }
+
+  Entity _createEntityInstance(rawEntityData) {
+    switch (rawEntityData["entity_id"].split(".")[0]) {
+      case 'sun': {
+        return SunEntity(rawEntityData);
+      }
+      case "automation":
+      case "input_boolean":
+      case "switch":
+      case "light": {
+      return SwitchEntity(rawEntityData);
+      }
+      case "script":
+      case "scene": {
+      return ButtonEntity(rawEntityData);
+      }
+      case "input_datetime": {
+        return DateTimeEntity(rawEntityData);
+      }
+      case "input_select": {
+        return SelectEntity(rawEntityData);
+      }
+      case "input_number": {
+        return SliderEntity(rawEntityData);
+      }
+      case "input_text": {
+        return TextEntity(rawEntityData);
+      }
+      case "climate": {
+        return ClimateEntity(rawEntityData);
+      }
+      case "cover": {
+        return CoverEntity(rawEntityData);
+      }
+      default: {
+        return Entity(rawEntityData);
+      }
+    }
+  }
+
+  void updateState(Map rawStateData) {
+    if (isExist(rawStateData["entity_id"])) {
+      updateFromRaw(rawStateData["new_state"] ?? rawStateData["old_state"]);
+    } else {
+      addFromRaw(rawStateData["new_state"] ?? rawStateData["old_state"]);
+    }
+  }
+
+  void add(Entity entity) {
+    _entities[entity.entityId] = entity;
+  }
+
+  Entity addFromRaw(Map rawEntityData) {
+    Entity entity = _createEntityInstance(rawEntityData);
+    _entities[entity.entityId] = entity;
+    return entity;
+  }
+
+  void updateFromRaw(Map rawEntityData) {
+    get("${rawEntityData["entity_id"]}")?.update(rawEntityData);
+  }
+
+  Entity get(String entityId) {
+    return _entities[entityId];
+  }
+
+  List<Entity> getAll(List ids) {
+    List<Entity> result = [];
+    ids.forEach((id){
+      Entity en = get(id);
+      if (en != null) {
+        result.add(en);
+      }
+    });
+    return result;
+  }
+
+  bool isExist(String entityId) {
+    return _entities[entityId] != null;
+  }
+
+  Map<String,List<String>> getDefaultViewTopLevelEntities() {
+    Map<String,List<String>> result = {"userGroups": [], "notGroupedEntities": []};
+    List<String> entities = [];
+    _entities.forEach((id, entity){
+      if ((id.indexOf("group.") == 0) && (id.indexOf(".all_") == -1) && (!entity.isView)) {
+        result["userGroups"].add(id);
+      }
+      if (!entity.isGroup) {
+        entities.add(id);
+      }
+    });
+
+    entities.forEach((entiyId) {
+      bool foundInGroup = false;
+      result["userGroups"].forEach((userGroupId) {
+        if (_entities[userGroupId].childEntityIds.contains(entiyId)) {
+          foundInGroup = true;
+        }
+      });
+      if (!foundInGroup) {
+        result["notGroupedEntities"].add(entiyId);
+      }
+    });
+
+    return result;
+  }
+
+}

lib/home_assistant.class.dart

@@ -0,0 +1,446 @@
+part of 'main.dart';
+
+class HomeAssistant {
+  String _webSocketAPIEndpoint;
+  String _password;
+  String _authType;
+
+  IOWebSocketChannel _hassioChannel;
+  SendMessageQueue _messageQueue;
+
+  int _currentMessageId = 0;
+  int _statesMessageId = 0;
+  int _servicesMessageId = 0;
+  int _subscriptionMessageId = 0;
+  int _configMessageId = 0;
+  int _userInfoMessageId = 0;
+  EntityCollection _entities;
+  ViewBuilder _viewBuilder;
+  Map _instanceConfig = {};
+  String _userName;
+
+  Completer _fetchCompleter;
+  Completer _statesCompleter;
+  Completer _servicesCompleter;
+  Completer _configCompleter;
+  Completer _connectionCompleter;
+  Completer _userInfoCompleter;
+  Timer _connectionTimer;
+  Timer _fetchTimer;
+  bool autoReconnect = false;
+
+  StreamSubscription _socketSubscription;
+
+  int messageExpirationTime = 30; //seconds
+  Duration fetchTimeout = Duration(seconds: 30);
+  Duration connectTimeout = Duration(seconds: 15);
+
+  String get locationName => _instanceConfig["location_name"] ?? "";
+  String get userName => _userName ?? locationName;
+  String get userAvatarText => userName.length > 0 ? userName[0] : "";
+  int get viewsCount => _entities.viewList.length ?? 0;
+
+  EntityCollection get entities => _entities;
+
+  HomeAssistant() {
+    _entities = EntityCollection();
+    _messageQueue = SendMessageQueue(messageExpirationTime);
+  }
+
+  void updateConnectionSettings(String url, String password, String authType) {
+    _webSocketAPIEndpoint = url;
+    _password = password;
+    _authType = authType;
+  }
+
+  Future fetch() {
+    if ((_fetchCompleter != null) && (!_fetchCompleter.isCompleted)) {
+      TheLogger.log("Warning","Previous fetch is not complited");
+    } else {
+      _fetchCompleter = new Completer();
+      _fetchTimer = Timer(fetchTimeout, () {
+        TheLogger.log("Error", "Data fetching timeout");
+        disconnect().then((_) {
+          _completeFetching({
+            "errorCode": 9,
+            "errorMessage": "Couldn't get data from server"
+          });
+        });
+      });
+      _connection().then((r) {
+        _getData();
+      }).catchError((e) {
+        _completeFetching(e);
+      });
+    }
+    return _fetchCompleter.future;
+  }
+
+  disconnect() async {
+    if ((_hassioChannel != null) && (_hassioChannel.closeCode == null) && (_hassioChannel.sink != null)) {
+      await _hassioChannel.sink.close().timeout(Duration(seconds: 3),
+        onTimeout: () => TheLogger.log("Debug", "Socket sink closed")
+      );
+      await _socketSubscription.cancel();
+      _hassioChannel = null;
+    }
+
+  }
+
+  Future _connection() {
+    if ((_connectionCompleter != null) && (!_connectionCompleter.isCompleted)) {
+      TheLogger.log("Debug","Previous connection is not complited");
+    } else {
+      if ((_hassioChannel == null) || (_hassioChannel.closeCode != null)) {
+        _connectionCompleter = new Completer();
+        autoReconnect = false;
+        disconnect().then((_){
+          TheLogger.log("Debug", "Socket connecting...");
+          _connectionTimer = Timer(connectTimeout, () {
+            TheLogger.log("Error", "Socket connection timeout");
+            _handleSocketError(null);
+          });
+          if (_socketSubscription != null) {
+            _socketSubscription.cancel();
+          }
+          _hassioChannel = IOWebSocketChannel.connect(
+              _webSocketAPIEndpoint, pingInterval: Duration(seconds: 30));
+          _socketSubscription = _hassioChannel.stream.listen(
+                  (message) => _handleMessage(message),
+              cancelOnError: true,
+              onDone: () => _handleSocketClose(),
+              onError: (e) => _handleSocketError(e)
+          );
+        });
+      } else {
+        _completeConnecting(null);
+      }
+    }
+    return _connectionCompleter.future;
+  }
+
+  void _handleSocketClose() {
+    TheLogger.log("Debug","Socket disconnected. Automatic reconnect is $autoReconnect");
+    if (autoReconnect) {
+      _reconnect();
+    }
+  }
+
+  void _handleSocketError(e) {
+    TheLogger.log("Error","Socket stream Error: $e");
+    TheLogger.log("Debug","Automatic reconnect is $autoReconnect");
+    if (autoReconnect) {
+      _reconnect();
+    } else {
+      disconnect().then((_) {
+        _completeConnecting({
+          "errorCode": 1,
+          "errorMessage": "Couldn't connect to Home Assistant. Check network connection or connection settings."
+        });
+      });
+    }
+  }
+
+  void _reconnect() {
+    disconnect().then((_) {
+      _connection().catchError((e){
+        _completeConnecting(e);
+      });
+    });
+  }
+
+  _getData() async {
+    List<Future> futures = [];
+    futures.add(_getStates());
+    futures.add(_getConfig());
+    futures.add(_getServices());
+    futures.add(_getUserInfo());
+    try {
+      await Future.wait(futures);
+      _completeFetching(null);
+    } catch (error) {
+      _completeFetching(error);
+    }
+  }
+
+  void _completeFetching(error) {
+    _fetchTimer.cancel();
+    _completeConnecting(error);
+    if (!_fetchCompleter.isCompleted) {
+      if (error != null) {
+        _fetchCompleter.completeError(error);
+      } else {
+        autoReconnect = true;
+        TheLogger.log("Debug", "Fetch complete successful");
+        _fetchCompleter.complete();
+      }
+    }
+  }
+
+  void _completeConnecting(error) {
+    _connectionTimer.cancel();
+    if (!_connectionCompleter.isCompleted) {
+      if (error != null) {
+        _connectionCompleter.completeError(error);
+      } else {
+        _connectionCompleter.complete();
+      }
+    } else if (error != null) {
+      eventBus.fire(ShowErrorEvent(error["errorMessage"], error["errorCode"]));
+    }
+  }
+
+  _handleMessage(String message) {
+    var data = json.decode(message);
+    TheLogger.log("Debug","[Received] => ${data['type']}");
+    if (data["type"] == "auth_required") {
+      _sendAuthMessageRaw('{"type": "auth","$_authType": "$_password"}');
+    } else if (data["type"] == "auth_ok") {
+      _completeConnecting(null);
+      _sendSubscribe();
+    } else if (data["type"] == "auth_invalid") {
+      _completeConnecting({"errorCode": 6, "errorMessage": "${data["message"]}"});
+    } else if (data["type"] == "result") {
+      if (data["id"] == _configMessageId) {
+        _parseConfig(data);
+      } else if (data["id"] == _statesMessageId) {
+        _parseEntities(data);
+      } else if (data["id"] == _servicesMessageId) {
+        _parseServices(data);
+      } else if (data["id"] == _userInfoMessageId) {
+        _parseUserInfo(data);
+      } else if (data["id"] == _currentMessageId) {
+        TheLogger.log("Debug","Request id:$_currentMessageId was successful");
+      }
+    } else if (data["type"] == "event") {
+      if ((data["event"] != null) && (data["event"]["event_type"] == "state_changed")) {
+        _handleEntityStateChange(data["event"]["data"]);
+      } else if (data["event"] != null) {
+        TheLogger.log("Warning","Unhandled event type: ${data["event"]["event_type"]}");
+      } else {
+        TheLogger.log("Error","Event is null: $message");
+      }
+    } else {
+      TheLogger.log("Warning","Unknown message type: $message");
+    }
+  }
+
+  void _sendSubscribe() {
+    _incrementMessageId();
+    _subscriptionMessageId = _currentMessageId;
+    _sendMessageRaw('{"id": $_subscriptionMessageId, "type": "subscribe_events", "event_type": "state_changed"}', false);
+  }
+
+  Future _getConfig() {
+    _configCompleter = new Completer();
+    _incrementMessageId();
+    _configMessageId = _currentMessageId;
+    _sendMessageRaw('{"id": $_configMessageId, "type": "get_config"}', false);
+
+    return _configCompleter.future;
+  }
+
+  Future _getStates() {
+    _statesCompleter = new Completer();
+    _incrementMessageId();
+    _statesMessageId = _currentMessageId;
+    _sendMessageRaw('{"id": $_statesMessageId, "type": "get_states"}', false);
+
+    return _statesCompleter.future;
+  }
+
+  Future _getUserInfo() {
+    _userInfoCompleter = new Completer();
+    _incrementMessageId();
+    _userInfoMessageId = _currentMessageId;
+    _sendMessageRaw('{"id": $_userInfoMessageId, "type": "auth/current_user"}', false);
+
+    return _userInfoCompleter.future;
+  }
+
+  Future _getServices() {
+    _servicesCompleter = new Completer();
+    _incrementMessageId();
+    _servicesMessageId = _currentMessageId;
+    _sendMessageRaw('{"id": $_servicesMessageId, "type": "get_services"}', false);
+
+    return _servicesCompleter.future;
+  }
+
+  _incrementMessageId() {
+    _currentMessageId += 1;
+  }
+
+  void _sendAuthMessageRaw(String message) {
+    TheLogger.log("Debug", "[Sending] ==> auth request");
+    _hassioChannel.sink.add(message);
+  }
+
+  _sendMessageRaw(String message, bool queued) {
+    var sendCompleter = Completer();
+    if (queued) _messageQueue.add(message);
+    _connection().then((r) {
+      _messageQueue.getActualMessages().forEach((message){
+        TheLogger.log("Debug", "[Sending queued] ==> $message");
+        _hassioChannel.sink.add(message);
+      });
+      if (!queued) {
+        TheLogger.log("Debug", "[Sending] ==> $message");
+        _hassioChannel.sink.add(message);
+      }
+      sendCompleter.complete();
+    }).catchError((e){
+      sendCompleter.completeError(e);
+    });
+    return sendCompleter.future;
+  }
+
+  Future callService(String domain, String service, String entityId, Map<String, dynamic> additionalParams) {
+    _incrementMessageId();
+    String message = '{"id": $_currentMessageId, "type": "call_service", "domain": "$domain", "service": "$service", "service_data": {"entity_id": "$entityId"';
+    if (additionalParams != null) {
+      additionalParams.forEach((name, value){
+        if ((value is double) || (value is int)) {
+          message += ', "$name" : $value';
+        } else {
+          message += ', "$name" : "$value"';
+        }
+      });
+    }
+    message += '}}';
+    return _sendMessageRaw(message, true);
+  }
+
+  void _handleEntityStateChange(Map eventData) {
+    //TheLogger.log("Debug", "New state for ${eventData['entity_id']}");
+    Map data = Map.from(eventData);
+    _entities.updateState(data);
+    eventBus.fire(new StateChangedEvent(data["entity_id"], null, false));
+  }
+
+  void _parseConfig(Map data) {
+    if (data["success"] == true) {
+      _instanceConfig = Map.from(data["result"]);
+      _configCompleter.complete();
+    } else {
+      _configCompleter.completeError({"errorCode": 2, "errorMessage": data["error"]["message"]});
+    }
+  }
+
+  void _parseUserInfo(Map data) {
+    if (data["success"] == true) {
+      _userName = data["result"]["name"];
+    } else {
+      _userName = null;
+    }
+    _userInfoCompleter.complete();
+  }
+
+  void _parseServices(response) {
+    _servicesCompleter.complete();
+    /*if (response["success"] == false) {
+      _servicesCompleter.completeError({"errorCode": 4, "errorMessage": response["error"]["message"]});
+      return;
+    }
+    try {
+      Map data = response["result"];
+      Map result = {};
+      TheLogger.log("Debug","Parsing ${data.length} Home Assistant service domains");
+      data.forEach((domain, services) {
+        result[domain] = Map.from(services);
+        services.forEach((serviceName, serviceData) {
+          if (_entitiesData.isExist("$domain.$serviceName")) {
+            result[domain].remove(serviceName);
+          }
+        });
+      });
+      _servicesData = result;
+      _servicesCompleter.complete();
+    } catch (e) {
+      TheLogger.log("Error","Error parsing services. But they are not used :-)");
+      _servicesCompleter.complete();
+    }*/
+  }
+
+  void _parseEntities(response) async {
+    if (response["success"] == false) {
+      _statesCompleter.completeError({"errorCode": 3, "errorMessage": response["error"]["message"]});
+      return;
+    }
+    _entities.parse(response["result"]);
+    _viewBuilder = ViewBuilder(entityCollection: _entities);
+    _statesCompleter.complete();
+  }
+
+  Widget buildViews(BuildContext context) {
+    return _viewBuilder.buildWidget(context);
+  }
+
+  Future<List> getHistory(String entityId) async {
+    DateTime now = DateTime.now();
+    //String endTime = formatDate(now, [yyyy, '-', mm, '-', dd, 'T', HH, ':', nn, ':', ss, z]);
+    String startTime = formatDate(now.subtract(Duration(hours: 24)), [yyyy, '-', mm, '-', dd, 'T', HH, ':', nn, ':', ss, z]);
+    TheLogger.log("Debug", "$startTime");
+    String url = "$homeAssistantWebHost/api/history/period/$startTime?&filter_entity_id=$entityId&skip_initial_state";
+    TheLogger.log("Debug", "$url");
+    http.Response historyResponse;
+    if (_authType == "access_token") {
+      historyResponse = await http.get(url, headers: {
+        "authorization": "Bearer $_password",
+        "Content-Type": "application/json"
+      });
+    } else {
+      historyResponse = await http.get(url, headers: {
+        "X-HA-Access": "$_password",
+        "Content-Type": "application/json"
+      });
+    }
+    var _history = json.decode(historyResponse.body);
+    if (_history is Map) {
+      return null;
+    } else if (_history is List) {
+      TheLogger.log("Debug", "${_history[0].toString()}");
+      return _history;
+    }
+  }
+}
+
+class SendMessageQueue {
+  int _messageTimeout;
+  List<HAMessage> _queue = [];
+
+  SendMessageQueue(this._messageTimeout);
+
+  void add(String message) {
+    _queue.add(HAMessage(_messageTimeout, message));
+  }
+  
+  List<String> getActualMessages() {
+    _queue.removeWhere((item) => item.isExpired());
+    List<String> result = [];
+    _queue.forEach((haMessage){
+      result.add(haMessage.message);
+    });
+    this.clear();
+    return result;
+  }
+  
+  void clear() {
+    _queue.clear();
+  }
+  
+}
+
+class HAMessage {
+  DateTime _timeStamp;
+  int _messageTimeout;
+  String message;
+  
+  HAMessage(this._messageTimeout, this.message) {
+    _timeStamp = DateTime.now();
+  }
+  
+  bool isExpired() {
+    return DateTime.now().difference(_timeStamp).inSeconds > _messageTimeout;
+  }
+}

lib/log.page.dart

@@ -10,11 +10,7 @@ class LogViewPage extends StatefulWidget {
 }
 
 class _LogViewPageState extends State<LogViewPage> {
-  String _hassioDomain = "";
-  String _hassioPort = "8123";
-  String _hassioPassword = "";
-  String _socketProtocol = "wss";
-  String _authType = "access_token";
+  String _logData;
 
   @override
   void initState() {
@@ -23,7 +19,7 @@ class _LogViewPageState extends State<LogViewPage> {
   }
 
   _loadLog() async {
-    //
+    _logData = TheLogger.getLog();
   }
 
   @override
@@ -36,12 +32,28 @@ class _LogViewPageState extends State<LogViewPage> {
         // Here we take the value from the MyHomePage object that was created by
         // the App.build method, and use it to set our appbar title.
         title: new Text(widget.title),
+        actions: <Widget>[
+          IconButton(
+            icon: Icon(Icons.content_copy),
+            onPressed: () {
+              Clipboard.setData(new ClipboardData(text: _logData));
+            },
+          ),
+          IconButton(
+            icon: Icon(MaterialDesignIcons.createIconDataFromIconName("mdi:github-circle")),
+            onPressed: () {
+              String body = "```\n$_logData```";
+              String encodedBody = "${Uri.encodeFull(body)}";
+              HAUtils.launchURL("https://github.com/estevez-dev/ha_client_pub/issues/new?body=$encodedBody");
+            },
+          ),
+        ],
       ),
       body: TextField(
         maxLines: null,
 
         controller: TextEditingController(
-            text: TheLogger.getLog()
+            text: _logData
         ),
       )
     );

lib/main.dart

@@ -8,50 +8,51 @@ import 'package:progress_indicators/progress_indicators.dart';
 import 'package:event_bus/event_bus.dart';
 import 'package:flutter/widgets.dart';
 import 'package:cached_network_image/cached_network_image.dart';
+import 'package:url_launcher/url_launcher.dart';
+import 'package:flutter/services.dart';
+import 'package:date_format/date_format.dart';
+import 'package:http/http.dart' as http;
 
-part 'settingsPage.dart';
-part 'data_model.dart';
-part 'logPage.dart';
+part 'entity_class/entity.class.dart';
+part 'entity_class/stateless_widgets.dart';
+part 'entity_class/stateful_widgets.dart';
+
+part 'settings.page.dart';
+part 'home_assistant.class.dart';
+part 'log.page.dart';
+part 'entity.page.dart';
+part 'utils.class.dart';
+part 'mdi.class.dart';
+part 'entity_collection.class.dart';
+part 'view_builder.class.dart';
+part 'view_class.dart';
+part 'card_class.dart';
 
 EventBus eventBus = new EventBus();
 const String appName = "HA Client";
-const appVersion = "0.1.1-alpha";
+const appVersion = "0.3.0.38";
 
 String homeAssistantWebHost;
 
-class TheLogger {
-
-  static List<String> _log = [];
-
-  static String getLog() {
-    String res = '';
-    _log.forEach((line) {
-      res += "$line\n\n";
-    });
-    return res;
-  }
-
-  static bool get isInDebugMode {
-    bool inDebugMode = false;
-
-    assert(inDebugMode = true);
-
-    return inDebugMode;
-  }
-
-  static void log(String level, String message) {
-    debugPrint('$message');
-    _log.add("[$level] :  $message");
-    if (_log.length > 50) {
-      _log.removeAt(0);
+void main() {
+  FlutterError.onError = (errorDetails) {
+    TheLogger.log("Error", "${errorDetails.exception}");
+    if (TheLogger.isInDebugMode) {
+      FlutterError.dumpErrorToConsole(errorDetails);
     }
-  }
+  };
 
+  runZoned(() {
+    runApp(new HAClientApp());
+  }, onError: (error, stack) {
+    TheLogger.log("Global error", "$error");
+    if (TheLogger.isInDebugMode) {
+      debugPrint("$stack");
+    }
+  });
 }
 
-void main() => runApp(new HassClientApp());
-
-class HassClientApp extends StatelessWidget {
+class HAClientApp extends StatelessWidget {
   // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
@@ -62,7 +63,7 @@ class HassClientApp extends StatelessWidget {
       ),
       initialRoute: "/",
       routes: {
-        "/": (context) => MainPage(title: 'Hass Client'),
+        "/": (context) => MainPage(title: 'HA Client'),
         "/connection-settings": (context) => ConnectionSettingsPage(title: "Connection Settings"),
         "/log-view": (context) => LogViewPage(title: "Log")
       },
@@ -80,401 +81,185 @@ class MainPage extends StatefulWidget {
 }
 
 class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
-  HassioDataModel _dataModel;
-  Map _entitiesData;
-  Map _uiStructure;
-  Map _instanceConfig;
+  HomeAssistant _homeAssistant;
+  EntityCollection _entities;
+  //Map _instanceConfig;
+  String _webSocketApiEndpoint;
+  String _password;
+  String _authType;
   int _uiViewsCount = 0;
   String _instanceHost;
-  int _errorCodeToBeShown = 0;
-  String _lastErrorMessage = "";
   StreamSubscription _stateSubscription;
   StreamSubscription _settingsSubscription;
-  bool _isLoading = true;
-  Map<String, Color> _stateIconColors = {
-    "on": Colors.amber,
-    "off": Color.fromRGBO(68, 115, 158, 1.0),
-    "unavailable": Colors.black12,
-    "unknown": Colors.black12,
-    "playing": Colors.amber
-  };
-  Map<String, Color> _badgeColors = {
-    "default": Color.fromRGBO(223, 76, 30, 1.0),
-    "binary_sensor": Color.fromRGBO(3, 155, 229, 1.0)
-  };
+  StreamSubscription _serviceCallSubscription;
+  StreamSubscription _showEntityPageSubscription;
+  StreamSubscription _refreshDataSubscription;
+  StreamSubscription _showErrorSubscription;
+  int _isLoading = 1;
+  bool _settingsLoaded = false;
+  bool _accountMenuExpanded = false;
 
   @override
   void initState() {
     super.initState();
+    _settingsLoaded = false;
     WidgetsBinding.instance.addObserver(this);
+
+    _homeAssistant = HomeAssistant();
+
     _settingsSubscription = eventBus.on<SettingsChangedEvent>().listen((event) {
       TheLogger.log("Debug","Settings change event: reconnect=${event.reconnect}");
-      setState(() {
-        _errorCodeToBeShown = 0;
-      });
-      _initConnection();
+      if (event.reconnect) {
+        _homeAssistant.disconnect().then((_){
+          _initialLoad();
+        });
+      }
+    });
+    _initialLoad();
+  }
+
+  void _initialLoad() {
+    _loadConnectionSettings().then((_){
+      _subscribe();
+      _refreshData();
+    }, onError: (_) {
+      setState(() {
+        _isLoading = 2;
+      });
+      _showErrorSnackBar(message: _, errorCode: 5);
     });
-    _initConnection();
   }
 
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     TheLogger.log("Debug","$state");
-    if (state == AppLifecycleState.resumed) {
+    if (state == AppLifecycleState.resumed && _settingsLoaded) {
       _refreshData();
     }
   }
 
-  _initConnection() async {
+  _loadConnectionSettings() async {
     SharedPreferences prefs = await SharedPreferences.getInstance();
     String domain = prefs.getString('hassio-domain');
     String port = prefs.getString('hassio-port');
     _instanceHost = "$domain:$port";
-    String apiEndpoint = "${prefs.getString('hassio-protocol')}://$domain:$port/api/websocket";
+    _webSocketApiEndpoint = "${prefs.getString('hassio-protocol')}://$domain:$port/api/websocket";
     homeAssistantWebHost = "${prefs.getString('hassio-res-protocol')}://$domain:$port";
-    String apiPassword = prefs.getString('hassio-password');
-    String authType = prefs.getString('hassio-auth-type');
-    if ((domain == null) || (port == null) || (apiPassword == null) ||
-        (domain.length == 0) || (port.length == 0) || (apiPassword.length == 0)) {
-      setState(() {
-        _errorCodeToBeShown = 5;
-      });
+    _password = prefs.getString('hassio-password');
+    _authType = prefs.getString('hassio-auth-type');
+    if ((domain == null) || (port == null) || (_password == null) ||
+        (domain.length == 0) || (port.length == 0) || (_password.length == 0)) {
+      throw("Check connection settings");
     } else {
-      if (_dataModel != null) _dataModel.closeConnection();
-      _createConnection(apiEndpoint, apiPassword, authType);
+      _settingsLoaded = true;
     }
   }
 
-  _createConnection(String apiEndpoint, String apiPassword, String authType) {
-    _dataModel = HassioDataModel(apiEndpoint, apiPassword, authType);
-    _refreshData();
-    if (_stateSubscription != null) _stateSubscription.cancel();
-    _stateSubscription = eventBus.on<StateChangedEvent>().listen((event) {
-      setState(() {
-        _entitiesData = _dataModel.entities;
+  _subscribe() {
+    if (_stateSubscription == null) {
+      _stateSubscription = eventBus.on<StateChangedEvent>().listen((event) {
+        setState(() {
+          if (event.localChange) {
+            _entities
+                .get(event.entityId)
+                .state = event.newState;
+          }
+        });
       });
-    });
+    }
+    if (_serviceCallSubscription == null) {
+      _serviceCallSubscription =
+          eventBus.on<ServiceCallEvent>().listen((event) {
+            _callService(event.domain, event.service, event.entityId,
+                event.additionalParams);
+          });
+    }
+
+    if (_showEntityPageSubscription == null) {
+      _showEntityPageSubscription =
+          eventBus.on<ShowEntityPageEvent>().listen((event) {
+            _showEntityPage(event.entity);
+          });
+    }
+
+    if (_refreshDataSubscription == null) {
+      _refreshDataSubscription = eventBus.on<RefreshDataEvent>().listen((event){
+        _refreshData();
+      });
+    }
+
+    if (_showErrorSubscription == null) {
+      _showErrorSubscription = eventBus.on<ShowErrorEvent>().listen((event){
+        _showErrorSnackBar(message: event.text, errorCode: event.errorCode);
+      });
+    }
   }
 
   _refreshData() async {
+    _homeAssistant.updateConnectionSettings(_webSocketApiEndpoint, _password, _authType);
     setState(() {
-      _isLoading = true;
+      _hideErrorSnackBar();
+      _isLoading = 1;
     });
-    _errorCodeToBeShown = 0;
-    if (_dataModel != null) {
-      await _dataModel.fetch().then((result) {
-        setState(() {
-          _instanceConfig = _dataModel.instanceConfig;
-          _entitiesData = _dataModel.entities;
-          _uiStructure = _dataModel.uiStructure;
-          _uiViewsCount = _uiStructure.length;
-          _isLoading = false;
-        });
-      }).catchError((e) {
-        _setErrorState(e);
+    await _homeAssistant.fetch().then((result) {
+      setState(() {
+        //_instanceConfig = _homeAssistant.instanceConfig;
+        _entities = _homeAssistant.entities;
+        _uiViewsCount = _homeAssistant.viewsCount;
+        _isLoading = 0;
       });
-    }
+    }).catchError((e) {
+      _setErrorState(e);
+    });
+    eventBus.fire(RefreshDataFinishedEvent());
   }
 
   _setErrorState(e) {
     setState(() {
-      _errorCodeToBeShown = e["errorCode"] != null ? e["errorCode"] : 99;
-      _lastErrorMessage = e["errorMessage"] ?? "Unknown error";
-      _isLoading = false;
+      _isLoading = 2;
     });
-  }
-
-  void _callService(String domain, String service, String entityId) {
-    setState(() {
-      _isLoading = true;
-    });
-    _dataModel.callService(domain, service, entityId).then((r) {
-      setState(() {
-        _isLoading = false;
-      });
-    }).catchError((e) => _setErrorState(e));
-  }
-
-  List<Widget> _buildViews() {
-    List<Widget> result = [];
-    if ((_entitiesData != null) && (_uiStructure != null)) {
-      _uiStructure.forEach((viewId, structure) {
-        result.add(
-            RefreshIndicator(
-              color: Colors.amber,
-              child: ListView(
-                physics: const AlwaysScrollableScrollPhysics(),
-                children: _buildSingleView(structure),
-              ),
-              onRefresh: () => _refreshData(),
-            )
-        );
-      });
-    }
-    return result;
-  }
-
-  List<Widget> _buildSingleView(structure) {
-    List<Widget> result = [];
-    if (structure["badges"]["children"].length > 0) {
-      result.add(
-            Wrap(
-              alignment: WrapAlignment.center,
-              spacing: 10.0,
-              runSpacing: 4.0,
-              //padding: new EdgeInsets.all(8.0),
-              //itemExtent: 40.0,
-              children: _buildBadges(structure["badges"]["children"]),
-            )
-      );
-
-    }
-    structure["groups"].forEach((id, group) {
-      if (group["children"].length > 0) {
-        result.add(_buildCard(
-            group["children"], group["friendly_name"].toString()));
-      }
-    });
-
-    return result;
-  }
-
-  List<Widget> _buildBadges(List ids) {
-    List<Widget> result = [];
-    ids.forEach((entityId) {
-      var data = _entitiesData[entityId];
-      if (data != null) {
-        result.add(
-          _buildSingleBadge(data)
-        );
-      }
-    });
-    return result;
-  }
-
-  Widget _buildSingleBadge(data) {
-    double iconSize = 26.0;
-    Widget badgeIcon;
-    String badgeTextValue;
-    Color iconColor = _badgeColors[data["domain"]] ?? _badgeColors["default"];
-    switch (data["domain"]) {
-      case "sun": {
-        badgeIcon = data["state"] == "below_horizon" ?
-          Icon(
-            MaterialDesignIcons.createIconDataFromIconCode(0xf0dc),
-            size: iconSize,
-          ) :
-          Icon(
-            MaterialDesignIcons.createIconDataFromIconCode(0xf5a8),
-            size: iconSize,
-          );
-        break;
-      }
-      case "sensor": {
-        badgeTextValue = data["attributes"]["unit_of_measurement"];
-        badgeIcon = Center(
-          child: Text(
-            "${data['state']}",
-            overflow: TextOverflow.fade,
-            softWrap: false,
-            textAlign: TextAlign.center,
-            style: TextStyle(fontSize: 18.0),
-          ),
-        );
-        break;
-      }
-      case "device_tracker": {
-        badgeIcon = MaterialDesignIcons.createIconFromEntityData(data, iconSize,Colors.black);
-        badgeTextValue = data["state"];
-        break;
-      }
-      default: {
-       badgeIcon = MaterialDesignIcons.createIconFromEntityData(data, iconSize,Colors.black);
-      }
-    }
-    Widget badgeText;
-    if (badgeTextValue == null) {
-      badgeText = Container(width: 0.0, height: 0.0);
-    } else {
-      badgeText = Container(
-          padding: EdgeInsets.fromLTRB(6.0, 2.0, 6.0, 2.0),
-          child: Text("$badgeTextValue",
-              style: TextStyle(fontSize: 13.0, color: Colors.white),
-              textAlign: TextAlign.center, softWrap: false, overflow: TextOverflow.fade),
-          decoration: new BoxDecoration(
-            // Circle shape
-            //shape: BoxShape.circle,
-            color: iconColor,
-            borderRadius: BorderRadius.circular(9.0),
-          )
-      );
-    }
-    return Column(
-      children: <Widget>[
-        Container(
-          margin: EdgeInsets.fromLTRB(0.0, 10.0, 0.0, 10.0),
-          width: 50.0,
-          height: 50.0,
-          decoration: new BoxDecoration(
-            // Circle shape
-            shape: BoxShape.circle,
-            color: Colors.white,
-            // The border you want
-            border: new Border.all(
-              width: 2.0,
-              color: iconColor,
-            ),
-          ),
-          child: Stack(
-            overflow: Overflow.visible,
-            children: <Widget>[
-              Positioned(
-                width: 46.0,
-                height: 46.0,
-                top: 0.0,
-                left: 0.0,
-                child: badgeIcon,
-              ),
-              Positioned(
-                //width: 50.0,
-                bottom: -9.0,
-                left: -15.0,
-                right: -15.0,
-                child: Center(
-                  child: badgeText,
-                )
-              )
-            ],
-          ),
-        ),
-        Container(
-          width: 60.0,
-          child: Text(
-            "${data['display_name']}",
-            textAlign: TextAlign.center,
-            softWrap: true,
-            maxLines: 2,
-            overflow: TextOverflow.ellipsis,
-          ),
-        ),
-      ],
+    _showErrorSnackBar(
+        message: e != null ? e["errorMessage"] ?? "$e" : "Unknown error",
+        errorCode: e["errorCode"] != null ? e["errorCode"] : 99
     );
   }
 
-  Card _buildCard(List ids, String name) {
-    List<Widget> body = [];
-    body.add(_buildCardHeader(name));
-    body.addAll(_buildCardBody(ids));
-    Card result =
-    Card(child: new Column(mainAxisSize: MainAxisSize.min, children: body));
-    return result;
+  void _callService(String domain, String service, String entityId, Map<String, dynamic> additionalParams) {
+    _homeAssistant.callService(domain, service, entityId, additionalParams).catchError((e) => _setErrorState(e));
   }
 
-  Widget _buildCardHeader(String name) {
-    var result;
-    if (name.length > 0) {
-      result = new ListTile(
-        //leading: const Icon(Icons.device_hub),
-        //subtitle: Text(".."),
-        //trailing: Text("${data["state"]}"),
-        title: Text("$name",
-            textAlign: TextAlign.left,
-            overflow: TextOverflow.ellipsis,
-            style: new TextStyle(fontWeight: FontWeight.bold, fontSize: 25.0)),
-      );
-    } else {
-      result = new Container(width: 0.0, height: 0.0);
-    }
-    return result;
-  }
-
-  List<Widget> _buildCardBody(List ids) {
-    List<Widget> entities = [];
-    ids.forEach((id) {
-      var data = _entitiesData[id];
-      if (data != null) {
-        entities.add(new ListTile(
-          leading: MaterialDesignIcons.createIconFromEntityData(data, 28.0, _stateIconColors[data["state"]] ?? Colors.blueGrey),
-          //subtitle: Text("${data['entity_id']}"),
-          trailing: _buildEntityActionWidget(data),
-          title: Text(
-            "${data["display_name"]}",
-            overflow: TextOverflow.fade,
-            softWrap: false,
-          ),
-        ));
-      }
-    });
-    return entities;
-  }
-
-  Widget _buildEntityActionWidget(data) {
-    String entityId = data["entity_id"];
-    Widget result;
-    switch (data["domain"]) {
-      case "automation":
-      case "switch":
-      case "light": {
-        result = Switch(
-          value: (data["state"] == "on"),
-          onChanged: ((state) {
-            _callService(
-                data["domain"], state ? "turn_on" : "turn_off", entityId);
-            setState(() {
-              _entitiesData[entityId]["state"] = state ? "on" : "off";
-            });
-          }),
-        );
-        break;
-      }
-
-      case "script":
-      case "scene": {
-        result = SizedBox(
-          width: 60.0,
-          child: FlatButton(
-            onPressed: (() {
-              _callService(data["domain"], "turn_on", entityId);
-            }),
-            child: Text(
-              "Run",
-              textAlign: TextAlign.right,
-              style: new TextStyle(fontSize: 16.0, color: Colors.blue),
-            ),
-          )
-        );
-        break;
-      }
-
-      default: {
-        result = Padding(
-          padding: EdgeInsets.fromLTRB(0.0, 0.0, 16.0, 0.0),
-          child: Text(
-            "${data["state"]}${(data["attributes"] != null && data["attributes"]["unit_of_measurement"] != null) ? data["attributes"]["unit_of_measurement"] : ''}",
-            textAlign: TextAlign.right,
-            style: new TextStyle(
-              fontSize: 16.0,
-            )
-          )
-        );
-      }
-    }
-
-    /*return SizedBox(
-      width: 60.0,
-      // height: double.infinity,
-      child: result
-    );*/
-    return result;
+  void _showEntityPage(Entity entity) {
+    Navigator.push(
+        context,
+        MaterialPageRoute(
+          builder: (context) => EntityViewPage(entity: entity, homeAssistant: _homeAssistant),
+        )
+    );
   }
 
   List<Tab> buildUIViewTabs() {
+    //TODO move somewhere to ViewBuilder
     List<Tab> result = [];
-    if ((_entitiesData != null) && (_uiStructure != null)) {
-      _uiStructure.forEach((viewId, structure) {
+    if (!_entities.isEmpty) {
+      if (!_entities.hasDefaultView) {
         result.add(
             Tab(
-                icon: MaterialDesignIcons.createIconFromEntityData(structure, 24.0, null)
+                icon:
+                  Icon(
+                    MaterialDesignIcons.createIconDataFromIconName("mdi:home-assistant"),
+                    size: 24.0,
+                  )
+            )
+        );
+      }
+      _entities.viewList.forEach((viewId) {
+        result.add(
+            Tab(
+                icon: MaterialDesignIcons.createIconWidgetFromEntityData(_entities.get(viewId), 24.0, null) ??
+                    Icon(
+                      MaterialDesignIcons.createIconDataFromIconName("mdi:home-assistant"),
+                      size: 24.0,
+                    )
             )
         );
       });
@@ -484,9 +269,9 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
 
   Widget _buildAppTitle() {
     Row titleRow = Row(
-      children: [Text(_instanceConfig != null ? _instanceConfig["location_name"] : "")],
+      children: [Text(_homeAssistant != null ? _homeAssistant.locationName : "")],
     );
-    if (_isLoading) {
+    if (_isLoading == 1) {
       titleRow.children.add(Padding(
         child: JumpingDotsProgressIndicator(
           fontSize: 26.0,
@@ -494,48 +279,95 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
         ),
         padding: const EdgeInsets.fromLTRB(5.0, 0.0, 0.0, 30.0),
       ));
+    } else if (_isLoading == 2) {
+      titleRow.children.add(Padding(
+        child: Icon(
+            Icons.error_outline,
+            size: 20.0,
+          color: Colors.red,
+        ),
+        padding: const EdgeInsets.fromLTRB(5.0, 0.0, 0.0, 0.0),
+      ));
     }
     return titleRow;
   }
 
   Drawer _buildAppDrawer() {
+    List<Widget> menuItems = [];
+    menuItems.add(
+        UserAccountsDrawerHeader(
+          accountName: Text(_homeAssistant.userName),
+          accountEmail: Text(_instanceHost ?? "Not configured"),
+          onDetailsPressed: () {
+            setState(() {
+              _accountMenuExpanded = !_accountMenuExpanded;
+            });
+          },
+          currentAccountPicture: CircleAvatar(
+            child: Text(
+              _homeAssistant.userAvatarText,
+              style: TextStyle(
+                  fontSize: 32.0
+              ),
+            ),
+          ),
+        )
+    );
+    if (_accountMenuExpanded) {
+      menuItems.addAll([
+        ListTile(
+          leading: Icon(Icons.settings),
+          title: Text("Connection settings"),
+          onTap: () {
+            Navigator.of(context).pop();
+            Navigator.of(context).pushNamed('/connection-settings');
+          },
+        ),
+        Divider(),
+      ]);
+    } else {
+      menuItems.addAll([
+        new ListTile(
+          leading: Icon(Icons.insert_drive_file),
+          title: Text("Log"),
+          onTap: () {
+            Navigator.of(context).pop();
+            Navigator.of(context).pushNamed('/log-view');
+          },
+        ),
+        new ListTile(
+          leading: Icon(MaterialDesignIcons.createIconDataFromIconName("mdi:github-circle")),
+          title: Text("Report an issue"),
+          onTap: () {
+            Navigator.of(context).pop();
+            HAUtils.launchURL("https://github.com/estevez-dev/ha_client_pub/issues/new");
+          },
+        ),
+        Divider(),
+        new AboutListTile(
+          applicationName: appName,
+          applicationVersion: appVersion,
+          applicationLegalese: "Keyboard Crumbs | www.keyboardcrumbs.io",
+        )
+      ]);
+    }
     return new Drawer(
       child: ListView(
-        children: <Widget>[
-          new UserAccountsDrawerHeader(
-            accountName: Text(_instanceConfig != null ? _instanceConfig["location_name"] : "Unknown"),
-            accountEmail: Text(_instanceHost ?? "Not configured"),
-            currentAccountPicture: new Image.asset('images/hassio-192x192.png'),
-          ),
-          new ListTile(
-            leading: Icon(Icons.settings),
-            title: Text("Connection settings"),
-            onTap: () {
-              Navigator.pushNamed(context, '/connection-settings');
-            },
-          ),
-          new ListTile(
-            leading: Icon(Icons.insert_drive_file),
-            title: Text("Log"),
-            onTap: () {
-              Navigator.pushNamed(context, '/log-view');
-            },
-          ),
-          new AboutListTile(
-            applicationName: appName,
-            applicationVersion: appVersion,
-            applicationLegalese: "Keyboard Crumbs | www.keyboardcrumbs.io",
-          )
-        ],
+        children: menuItems,
       ),
     );
   }
 
-  _checkShowInfo(BuildContext context) {
-    if (_errorCodeToBeShown > 0) {
-      String message = _lastErrorMessage;
+  void _hideErrorSnackBar() {
+    _scaffoldKey?.currentState?.hideCurrentSnackBar();
+  }
+
+  void _showErrorSnackBar({Key key, @required String message, @required int errorCode}) {
       SnackBarAction action;
-      switch (_errorCodeToBeShown) {
+      switch (errorCode) {
+        case 9:
+        case 11:
+        case 7:
         case 1: {
             action = SnackBarAction(
                 label: "Retry",
@@ -570,9 +402,9 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
           break;
         }
 
-        case 7: {
+        case 10: {
           action = SnackBarAction(
-            label: "Retry",
+            label: "Refresh",
             onPressed: () {
               _scaffoldKey?.currentState?.hideCurrentSnackBar();
               _refreshData();
@@ -592,79 +424,65 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
           break;
         }
       }
-      Timer(Duration(seconds: 1), () {
-        _scaffoldKey.currentState.hideCurrentSnackBar();
-        _scaffoldKey.currentState.showSnackBar(
-            SnackBar(
-                content: Text("$message (code: $_errorCodeToBeShown)"),
-                action: action,
-                duration: Duration(hours: 1),
-            )
-        );
-      });
-    } else {
-      _scaffoldKey?.currentState?.hideCurrentSnackBar();
-    }
+      _scaffoldKey.currentState.hideCurrentSnackBar();
+      _scaffoldKey.currentState.showSnackBar(
+        SnackBar(
+          content: Text("$message (code: $errorCode)"),
+          action: action,
+          duration: Duration(hours: 1),
+        )
+      );
   }
 
   final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
 
+  Scaffold _buildScaffold(bool empty) {
+    return Scaffold(
+      key: _scaffoldKey,
+      appBar: AppBar(
+        title: _buildAppTitle(),
+        leading: IconButton(
+          icon: Icon(Icons.menu),
+          onPressed: () {
+            _scaffoldKey.currentState.openDrawer();
+            setState(() {
+              _accountMenuExpanded = false;
+            });
+          },
+        ),
+        bottom: empty ? null : TabBar(
+            tabs: buildUIViewTabs(),
+            isScrollable: true,
+        ),
+      ),
+      drawer: _buildAppDrawer(),
+      body: empty ?
+        Center(
+          child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                Icon(
+                  MaterialDesignIcons.createIconDataFromIconName("mdi:home-assistant"),
+                  size: 100.0,
+                  color: _isLoading == 2 ? Colors.redAccent : Colors.blue,
+                ),
+              ]
+          ),
+        )
+        :
+        _homeAssistant.buildViews(context)
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
-    _checkShowInfo(context);
     // This method is rerun every time setState is called.
-    //
-    if (_entitiesData == null) {
-      return new Scaffold(
-        key: _scaffoldKey,
-        appBar: new AppBar(
-          title: _buildAppTitle()
-        ),
-        drawer: _buildAppDrawer(),
-        body: Center(
-          child: Column(
-            mainAxisAlignment: MainAxisAlignment.center,
-            children: [
-              /*Padding(
-                padding: EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 10.0),
-                child: Text(
-                    _fetchErrorCode > 0 ? "Well... no.\n\nThere was an error [$_fetchErrorCode]: ${_getErrorMessageByCode(_fetchErrorCode, false)}" : "Loading...",
-                    textAlign: TextAlign.center,
-                    style: TextStyle(fontSize: 16.0),
-                ),
-              ),*/
-              Icon(
-                MaterialDesignIcons.createIconDataFromIconName("mdi:home-assistant"),
-                size: 100.0,
-                color: _errorCodeToBeShown == 0 ? Colors.blue : Colors.redAccent,
-              ),
-            ]
-          ),
-        ),
-        floatingActionButton: new FloatingActionButton(
-          onPressed: _refreshData,
-          tooltip: 'Increment',
-          child: new Icon(Icons.refresh),
-        ),
-      );
+    if (_entities == null) {
+      return _buildScaffold(true);
     } else {
       return DefaultTabController(
           length: _uiViewsCount,
-          child: new Scaffold(
-            key: _scaffoldKey,
-            appBar: new AppBar(
-              // Here we take the value from the MyHomePage object that was created by
-              // the App.build method, and use it to set our appbar title.
-              title: _buildAppTitle(),
-              bottom: TabBar(
-                  tabs: buildUIViewTabs()
-              ),
-            ),
-            drawer: _buildAppDrawer(),
-            body: TabBarView(
-                children: _buildViews()
-            ),
-          )
+          child: _buildScaffold(false)
       );
     }
   }
@@ -674,7 +492,11 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
     WidgetsBinding.instance.removeObserver(this);
     if (_stateSubscription != null) _stateSubscription.cancel();
     if (_settingsSubscription != null) _settingsSubscription.cancel();
-    _dataModel.closeConnection();
+    if (_serviceCallSubscription != null) _serviceCallSubscription.cancel();
+    if (_showEntityPageSubscription != null) _showEntityPageSubscription.cancel();
+    if (_refreshDataSubscription != null) _refreshDataSubscription.cancel();
+    if (_showErrorSubscription != null) _showErrorSubscription.cancel();
+    _homeAssistant.disconnect();
     super.dispose();
   }
 }

lib/mdi.class.dart

@@ -1,362 +1,5 @@
 part of 'main.dart';
 
-class StateChangedEvent {
-  String entityId;
-
-  StateChangedEvent(this.entityId);
-}
-
-class SettingsChangedEvent {
-  bool reconnect;
-
-  SettingsChangedEvent(this.reconnect);
-}
-
-class HassioDataModel {
-  String _hassioAPIEndpoint;
-  String _hassioPassword;
-  String _hassioAuthType;
-  IOWebSocketChannel _hassioChannel;
-  int _currentMessageId = 0;
-  int _statesMessageId = 0;
-  int _servicesMessageId = 0;
-  int _subscriptionMessageId = 0;
-  int _configMessageId = 0;
-  Map _entitiesData = {};
-  Map _servicesData = {};
-  Map _uiStructure = {};
-  Map _instanceConfig = {};
-  Completer _fetchCompleter;
-  Completer _statesCompleter;
-  Completer _servicesCompleter;
-  Completer _configCompleter;
-  Timer _fetchingTimer;
-  List _topBadgeDomains = ["alarm_control_panel", "binary_sensor", "device_tracker", "updater", "sun", "timer", "sensor"];
-
-  Map get entities => _entitiesData;
-  Map get services => _servicesData;
-  Map get uiStructure => _uiStructure;
-  Map get instanceConfig => _instanceConfig;
-
-  HassioDataModel(String url, String password, String authType) {
-    _hassioAPIEndpoint = url;
-    _hassioPassword = password;
-    _hassioAuthType = authType;
-  }
-
-  Future fetch() {
-    if ((_fetchCompleter != null) && (!_fetchCompleter.isCompleted)) {
-      TheLogger.log("Warning","Previous fetch is not complited");
-    } else {
-      //TODO: Fetch timeout timer. Should be removed after #21 fix
-      _fetchingTimer = Timer(Duration(seconds: 15), () {
-        closeConnection();
-        _fetchCompleter.completeError({"errorCode" : 1,"errorMessage": "Connection timeout"});
-      });
-      _fetchCompleter = new Completer();
-      _reConnectSocket().then((r) {
-        _getData();
-      }).catchError((e) {
-        _finishFetching(e);
-      });
-    }
-    return _fetchCompleter.future;
-  }
-
-  closeConnection() {
-    if (_hassioChannel?.closeCode == null) {
-      _hassioChannel?.sink?.close();
-    }
-    _hassioChannel = null;
-  }
-
-  Future _reConnectSocket() {
-    var _connectionCompleter = new Completer();
-    if ((_hassioChannel == null) || (_hassioChannel.closeCode != null)) {
-      TheLogger.log("Debug","Socket connecting...");
-      _hassioChannel = IOWebSocketChannel.connect(_hassioAPIEndpoint);
-      _hassioChannel.stream.handleError((e) {
-        TheLogger.log("Error","Unhandled socket error: ${e.toString()}");
-      });
-      _hassioChannel.stream.listen((message) =>
-          _handleMessage(_connectionCompleter, message));
-    } else {
-      _connectionCompleter.complete();
-    }
-    return _connectionCompleter.future;
-  }
-
-  _getData() {
-    _getConfig().then((result) {
-      _getStates().then((result) {
-        _getServices().then((result) {
-          _finishFetching(null);
-        }).catchError((e) {
-          _finishFetching(e);
-        });
-      }).catchError((e) {
-        _finishFetching(e);
-      });
-    }).catchError((e) {
-      _finishFetching(e);
-    });
-  }
-
-  _finishFetching(error) {
-    _fetchingTimer.cancel();
-    if (error != null) {
-      _fetchCompleter.completeError(error);
-    } else {
-      _fetchCompleter.complete();
-    }
-  }
-
-  _handleMessage(Completer connectionCompleter, String message) {
-    var data = json.decode(message);
-    TheLogger.log("Debug","[Received] => Message type: ${data['type']}");
-    if (data["type"] == "auth_required") {
-      _sendMessageRaw('{"type": "auth","$_hassioAuthType": "$_hassioPassword"}');
-    } else if (data["type"] == "auth_ok") {
-      _sendSubscribe();
-      connectionCompleter.complete();
-    } else if (data["type"] == "auth_invalid") {
-      connectionCompleter.completeError({"errorCode": 6, "errorMessage": "${data["message"]}"});
-    } else if (data["type"] == "result") {
-      if (data["id"] == _configMessageId) {
-        _parseConfig(data);
-      } else if (data["id"] == _statesMessageId) {
-        _parseEntities(data);
-      } else if (data["id"] == _servicesMessageId) {
-        _parseServices(data);
-      } else if (data["id"] == _currentMessageId) {
-        TheLogger.log("Debug","Request id:$_currentMessageId was successful");
-      }
-    } else if (data["type"] == "event") {
-      if ((data["event"] != null) && (data["event"]["event_type"] == "state_changed")) {
-        _handleEntityStateChange(data["event"]["data"]);
-      } else if (data["event"] != null) {
-        TheLogger.log("Warning","Unhandled event type: ${data["event"]["event_type"]}");
-      } else {
-        TheLogger.log("Error","Event is null: $message");
-      }
-    } else {
-      TheLogger.log("Warning","Unknown message type: $message");
-    }
-  }
-
-  void _sendSubscribe() {
-    _incrementMessageId();
-    _subscriptionMessageId = _currentMessageId;
-    _sendMessageRaw('{"id": $_subscriptionMessageId, "type": "subscribe_events", "event_type": "state_changed"}');
-  }
-
-  Future _getConfig() {
-    _configCompleter = new Completer();
-    _incrementMessageId();
-    _configMessageId = _currentMessageId;
-    _sendMessageRaw('{"id": $_configMessageId, "type": "get_config"}');
-
-    return _configCompleter.future;
-  }
-
-  Future _getStates() {
-    _statesCompleter = new Completer();
-    _incrementMessageId();
-    _statesMessageId = _currentMessageId;
-    _sendMessageRaw('{"id": $_statesMessageId, "type": "get_states"}');
-
-    return _statesCompleter.future;
-  }
-
-  Future _getServices() {
-    _servicesCompleter = new Completer();
-    _incrementMessageId();
-    _servicesMessageId = _currentMessageId;
-    _sendMessageRaw('{"id": $_servicesMessageId, "type": "get_services"}');
-
-    return _servicesCompleter.future;
-  }
-
-  _incrementMessageId() {
-    _currentMessageId += 1;
-  }
-
-  _sendMessageRaw(String message) {
-    if (message.indexOf('"type": "auth"') > 0) {
-      TheLogger.log("Debug", "[Sending] ==> auth request");
-    } else {
-      TheLogger.log("Debug", "[Sending] ==> $message");
-    }
-    _hassioChannel.sink.add(message);
-  }
-
-  void _handleEntityStateChange(Map eventData) {
-    TheLogger.log("Debug", "Parsing new state for ${eventData['entity_id']}");
-    if (eventData["new_state"] == null) {
-      TheLogger.log("Error", "No new_state found");
-    } else {
-      var parsedEntityData = _parseEntity(eventData["new_state"]);
-      String entityId = parsedEntityData["entity_id"];
-      if (_entitiesData[entityId] == null) {
-        _entitiesData[entityId] = parsedEntityData;
-      } else {
-        _entitiesData[entityId].addAll(parsedEntityData);
-      }
-      eventBus.fire(new StateChangedEvent(eventData["entity_id"]));
-    }
-  }
-
-  void _parseConfig(Map data) {
-    if (data["success"] == true) {
-      _instanceConfig = Map.from(data["result"]);
-      _configCompleter.complete();
-    } else {
-      _configCompleter.completeError({"errorCode": 2, "errorMessage": data["error"]["message"]});
-    }
-  }
-
-  void _parseServices(response) {
-    if (response["success"] == false) {
-      _servicesCompleter.completeError({"errorCode": 4, "errorMessage": response["error"]["message"]});
-      return;
-    }
-    try {
-      Map data = response["result"];
-      Map result = {};
-      TheLogger.log("Debug","Parsing ${data.length} Home Assistant service domains");
-      data.forEach((domain, services) {
-        result[domain] = Map.from(services);
-        services.forEach((serviceName, serviceData) {
-          if (_entitiesData["$domain.$serviceName"] != null) {
-            result[domain].remove(serviceName);
-          }
-        });
-      });
-      _servicesData = result;
-      _servicesCompleter.complete();
-    } catch (e) {
-      //TODO hadle it properly
-      TheLogger.log("Error","Error parsing services. But they are not used :-)");
-      _servicesCompleter.complete();
-    }
-  }
-
-  void _parseEntities(response) async {
-    _entitiesData.clear();
-    _uiStructure.clear();
-    if (response["success"] == false) {
-      _statesCompleter.completeError({"errorCode": 3, "errorMessage": response["error"]["message"]});
-      return;
-    }
-    List data = response["result"];
-    TheLogger.log("Debug","Parsing ${data.length} Home Assistant entities");
-    List<String> uiGroups = [];
-    data.forEach((entity) {
-      try {
-        var composedEntity = _parseEntity(entity);
-
-        if (composedEntity["attributes"] != null) {
-          if ((composedEntity["domain"] == "group") &&
-              (composedEntity["attributes"]["view"] == true)) {
-            uiGroups.add(composedEntity["entity_id"]);
-          }
-        }
-        _entitiesData[entity["entity_id"]] = composedEntity;
-      } catch (error) {
-        TheLogger.log("Error","Error parsing entity: ${entity['entity_id']}");
-      }
-    });
-
-    //Gethering information for UI
-    TheLogger.log("Debug","Gethering views");
-    int viewCounter = 0;
-    uiGroups.forEach((viewId) { //Each view
-      try {
-        Map viewGroupStructure = {};
-        viewCounter += 1;
-        var viewGroup = _entitiesData[viewId];
-        if (viewGroup != null) {
-          viewGroupStructure["groups"] = {};
-          viewGroupStructure["state"] = "on";
-          viewGroupStructure["entity_id"] = viewGroup["entity_id"];
-          viewGroupStructure["badges"] = {"children": []};
-          viewGroupStructure["attributes"] = viewGroup["attributes"] != null ? {
-            "icon": viewGroup["attributes"]["icon"]
-          } : {"icon": "none"};
-
-
-          viewGroup["attributes"]["entity_id"].forEach((
-              entityId) { //Each entity or group in view
-            Map newGroup = {};
-            String domain = _entitiesData[entityId]["domain"];
-            if (domain != "group") {
-              if (_topBadgeDomains.contains(domain)) {
-                viewGroupStructure["badges"]["children"].add(entityId);
-              } else {
-                String autoGroupID = "$domain.$domain$viewCounter";
-                if (viewGroupStructure["groups"]["$autoGroupID"] == null) {
-                  newGroup["entity_id"] = "$domain.$domain$viewCounter";
-                  newGroup["friendly_name"] = "$domain";
-                  newGroup["children"] = [];
-                  newGroup["children"].add(entityId);
-                  viewGroupStructure["groups"]["$autoGroupID"] =
-                      Map.from(newGroup);
-                } else {
-                  viewGroupStructure["groups"]["$autoGroupID"]["children"].add(
-                      entityId);
-                }
-              }
-            } else {
-              newGroup["entity_id"] = entityId;
-              newGroup["friendly_name"] =
-              (_entitiesData[entityId]['attributes'] != null)
-                  ? (_entitiesData[entityId]['attributes']['friendly_name'] ??
-                  "")
-                  : "";
-              newGroup["children"] = List<String>();
-              _entitiesData[entityId]["attributes"]["entity_id"].forEach((
-                  groupedEntityId) {
-                newGroup["children"].add(groupedEntityId);
-              });
-              viewGroupStructure["groups"]["$entityId"] = Map.from(newGroup);
-            }
-          });
-        }
-        _uiStructure[viewId.split(".")[1]] = viewGroupStructure;
-      } catch (error) {
-        TheLogger.log("Error","Error parsing view: $viewId");
-      }
-    });
-    _statesCompleter.complete();
-  }
-
-  Map _parseEntity(rawData) {
-    var composedEntity = Map.from(rawData);
-    String entityDomain = rawData["entity_id"].split(".")[0];
-    composedEntity["display_name"] = "${rawData["attributes"]!=null ? rawData["attributes"]["friendly_name"] ?? rawData["attributes"]["name"] : "_"}";
-    composedEntity["domain"] = entityDomain;
-    return composedEntity;
-  }
-
-  Future callService(String domain, String service, String entity_id) {
-    var sendCompleter = Completer();
-    //TODO: Send service call timeout timer. Should be removed after #21 fix
-    Timer _sendTimer = Timer(Duration(seconds: 7), () {
-      sendCompleter.completeError({"errorCode" : 8,"errorMessage": "Connection timeout"});
-    });
-    _reConnectSocket().then((r) {
-      _incrementMessageId();
-      _sendMessageRaw('{"id": $_currentMessageId, "type": "call_service", "domain": "$domain", "service": "$service", "service_data": {"entity_id": "$entity_id"}}');
-      _sendTimer.cancel();
-      sendCompleter.complete();
-    }).catchError((e){
-      _sendTimer.cancel();
-      sendCompleter.completeError(e);
-    });
-    return sendCompleter.future;
-  }
-}
-
 class MaterialDesignIcons {
   static Map _defaultIconsByDomains = {
     "light": "mdi:lightbulb",
@@ -371,7 +14,14 @@ class MaterialDesignIcons {
     "input_number": "mdi:ray-vertex",
     "input_select": "mdi:format-list-bulleted",
     "input_text": "mdi:textbox",
-    "sun": "mdi:white-balance-sunny"
+    "sun": "mdi:white-balance-sunny",
+    "scene": "mdi:google-pages",
+    "media_player": "mdi:cast",
+    "climate": "mdi:thermostat",
+    "cover.open": "mdi:window-open",
+    "cover.closed": "mdi:window-closed",
+    "cover.closing": "mdi:window-open",
+    "cover.opening": "mdi:window-open",
   };
 
   static Map _defaultIconsByDeviceClass = {
@@ -423,7 +73,14 @@ class MaterialDesignIcons {
     //"sensor.illuminance": "mdi:",
     "sensor.temperature": "mdi:thermometer",
     //"cover.window": "mdi:",
-    //"cover.garage": "mdi:",
+    "cover.garage.closed": "mdi:garage",
+    "cover.garage.open": "mdi:garage-open",
+    "cover.garage.opening": "mdi:garage-open",
+    "cover.garage.closing": "mdi:garage-open",
+    "cover.window.open": "mdi:window-open",
+    "cover.window.closed": "mdi:window-closed",
+    "cover.window.closing": "mdi:window-open",
+    "cover.window.opening": "mdi:window-open",
   };
   static Map _iconsDataMap = {
     "mdi:access-point": 0xf002,
@@ -3223,35 +2880,35 @@ class MaterialDesignIcons {
     "mdi:blank": 0xf68c
   };
 
-  static Widget createIconFromEntityData(Map data, double size, Color color) {
-    if ((data["attributes"] != null) && (data["attributes"]["entity_picture"] != null)) {
+  static Widget createIconWidgetFromEntityData(Entity data, double size, Color color) {
+    if (data == null) {
+      return null;
+    }
+    if (data.entityPicture != null) {
       if (homeAssistantWebHost != null) {
         return CircleAvatar(
+          radius: size/2,
           backgroundColor: Colors.white,
           backgroundImage: CachedNetworkImageProvider(
-            "$homeAssistantWebHost${data["attributes"]["entity_picture"]}",
+            "$homeAssistantWebHost${data.entityPicture}",
           ),
         );
       } else {
         return Container(width: 0.0, height: 0.0);
       }
     } else {
-      String iconName = data["attributes"] != null
-          ? data["attributes"]["icon"]
-          : null;
+      String iconName = data.icon;
       int iconCode = 0;
-      if (iconName != null) {
+      if (iconName.length > 0) {
         iconCode = getIconCodeByIconName(iconName);
       } else {
-        iconCode = getDefaultIconByEntityId(data["entity_id"],
-            data["attributes"] != null
-                ? data["attributes"]["device_class"]
-                : null, data["state"]); //
+        iconCode = getDefaultIconByEntityId(data.entityId,
+            data.deviceClass, data.state); //
       }
       return Icon(
-          IconData(iconCode, fontFamily: 'Material Design Icons'),
-          size: size,
-          color: color,
+        IconData(iconCode, fontFamily: 'Material Design Icons'),
+        size: size,
+        color: color,
       );
     }
   }
@@ -3270,7 +2927,7 @@ class MaterialDesignIcons {
 
   static int getDefaultIconByEntityId(String entityId, String deviceClass, String state) {
     String domain = entityId.split(".")[0];
-    String iconNameByDomain = _defaultIconsByDomains[domain];
+    String iconNameByDomain = _defaultIconsByDomains["$domain.$state"] ?? _defaultIconsByDomains["$domain"];
     String iconNameByDeviceClass;
     if (deviceClass != null) {
       iconNameByDeviceClass = _defaultIconsByDeviceClass["$domain.$deviceClass.$state"] ?? _defaultIconsByDeviceClass["$domain.$deviceClass"];

lib/settings.page.dart

@@ -0,0 +1,191 @@
+part of 'main.dart';
+
+class ConnectionSettingsPage extends StatefulWidget {
+  ConnectionSettingsPage({Key key, this.title}) : super(key: key);
+
+  final String title;
+
+  @override
+  _ConnectionSettingsPageState createState() => new _ConnectionSettingsPageState();
+}
+
+class _ConnectionSettingsPageState extends State<ConnectionSettingsPage> {
+  String _hassioDomain = "";
+  String _newHassioDomain = "";
+  String _hassioPort = "";
+  String _newHassioPort = "";
+  String _hassioPassword = "";
+  String _newHassioPassword = "";
+  String _socketProtocol = "wss";
+  String _newSocketProtocol = "wss";
+  String _authType = "access_token";
+  String _newAuthType = "access_token";
+  bool _edited = false;
+  FocusNode _domainFocusNode;
+  FocusNode _portFocusNode;
+  FocusNode _passwordFocusNode;
+
+  @override
+  void initState() {
+    super.initState();
+    _domainFocusNode = FocusNode();
+    _portFocusNode = FocusNode();
+    _passwordFocusNode = FocusNode();
+    _domainFocusNode.addListener(_checkConfigChanged);
+    _portFocusNode.addListener(_checkConfigChanged);
+    _passwordFocusNode.addListener(_checkConfigChanged);
+    _loadSettings();
+  }
+
+  _loadSettings() async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+
+    setState(() {
+      _hassioDomain = _newHassioDomain = prefs.getString("hassio-domain")?? "";
+      _hassioPort = _newHassioPort = prefs.getString("hassio-port") ?? "";
+      _hassioPassword = _newHassioPassword = prefs.getString("hassio-password") ?? "";
+      _socketProtocol = _newSocketProtocol = prefs.getString("hassio-protocol") ?? 'wss';
+      _authType = _newAuthType = prefs.getString("hassio-auth-type") ?? 'access_token';
+    });
+  }
+
+  void _checkConfigChanged() {
+    setState(() {
+      _edited = ((_newHassioPassword != _hassioPassword) ||
+          (_newHassioPort != _hassioPort) ||
+          (_newHassioDomain != _hassioDomain) ||
+          (_newSocketProtocol != _socketProtocol) ||
+          (_newAuthType != _authType));
+    });
+  }
+
+  _saveSettings() async {
+    if (_newHassioDomain.indexOf("http") == 0 && _newHassioDomain.indexOf("//") > 0) {
+      _newHassioDomain = _newHassioDomain.split("//")[1];
+    }
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    prefs.setString("hassio-domain", _newHassioDomain);
+    prefs.setString("hassio-port", _newHassioPort);
+    prefs.setString("hassio-password", _newHassioPassword);
+    prefs.setString("hassio-protocol", _newSocketProtocol);
+    prefs.setString("hassio-res-protocol", _newSocketProtocol == "wss" ? "https" : "http");
+    prefs.setString("hassio-auth-type", _newAuthType);
+  }
+
+  @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),
+        actions: <Widget>[
+          IconButton(
+            icon: Icon(Icons.check),
+            onPressed: _edited ? (){
+                _saveSettings().then((r){
+                  Navigator.pop(context);
+                  eventBus.fire(SettingsChangedEvent(true));
+                });
+            } : null
+          )
+        ],
+      ),
+      body: ListView(
+        padding: const EdgeInsets.all(20.0),
+        children: <Widget>[
+          new Row(
+            children: [
+              Text("Use ssl (HTTPS)"),
+              Switch(
+                value: (_newSocketProtocol == "wss"),
+                onChanged: (value) {
+                  _newSocketProtocol = value ? "wss" : "ws";
+                  _checkConfigChanged();
+                },
+              )
+            ],
+          ),
+          new TextField(
+            decoration: InputDecoration(
+              labelText: "Home Assistant domain or ip address"
+            ),
+            controller: new TextEditingController.fromValue(
+                new TextEditingValue(
+                    text: _newHassioDomain,
+                    selection:
+                    new TextSelection.collapsed(offset: _newHassioDomain.length)
+                )
+            ),
+            onChanged: (value) {
+              _newHassioDomain = value;
+            },
+            focusNode: _domainFocusNode,
+            onEditingComplete: _checkConfigChanged,
+          ),
+          new TextField(
+            decoration: InputDecoration(
+              labelText: "Home Assistant port (default is 8123)"
+            ),
+            controller: new TextEditingController.fromValue(
+                new TextEditingValue(
+                    text: _newHassioPort,
+                    selection:
+                    new TextSelection.collapsed(offset: _newHassioPort.length)
+                )
+            ),
+            onChanged: (value) {
+              _newHassioPort = value;
+              //_saveSettings();
+            },
+            focusNode: _portFocusNode,
+            onEditingComplete: _checkConfigChanged,
+          ),
+          new Row(
+            children: [
+              Text("Login with access token (HA >= 0.78.0)"),
+              Switch(
+                value: (_newAuthType == "access_token"),
+                onChanged: (value) {
+                  _newAuthType = value ? "access_token" : "api_password";
+                  _checkConfigChanged();
+                  //_saveSettings();
+                },
+              )
+            ],
+          ),
+          new TextField(
+            decoration: InputDecoration(
+                labelText: _authType == "access_token" ? "Access token" : "API password"
+            ),
+            controller: new TextEditingController.fromValue(
+                new TextEditingValue(
+                    text: _newHassioPassword,
+                    selection:
+                    new TextSelection.collapsed(offset: _newHassioPassword.length)
+                )
+            ),
+            onChanged: (value) {
+              _newHassioPassword = value;
+              //_saveSettings();
+            },
+            focusNode: _passwordFocusNode,
+            onEditingComplete: _checkConfigChanged,
+          )
+        ],
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _domainFocusNode.removeListener(_checkConfigChanged);
+    _portFocusNode.removeListener(_checkConfigChanged);
+    _passwordFocusNode.removeListener(_checkConfigChanged);
+    _domainFocusNode.dispose();
+    _portFocusNode.dispose();
+    _passwordFocusNode.dispose();
+    super.dispose();
+  }
+}

lib/settingsPage.dart

@@ -1,135 +0,0 @@
-part of 'main.dart';
-
-class ConnectionSettingsPage extends StatefulWidget {
-  ConnectionSettingsPage({Key key, this.title}) : super(key: key);
-
-  final String title;
-
-  @override
-  _ConnectionSettingsPageState createState() => new _ConnectionSettingsPageState();
-}
-
-class _ConnectionSettingsPageState extends State<ConnectionSettingsPage> {
-  String _hassioDomain = "";
-  String _hassioPort = "8123";
-  String _hassioPassword = "";
-  String _socketProtocol = "wss";
-  String _authType = "access_token";
-
-  @override
-  void initState() {
-    super.initState();
-    _loadSettings();
-  }
-
-  _loadSettings() async {
-    SharedPreferences prefs = await SharedPreferences.getInstance();
-
-    setState(() {
-      _hassioDomain = prefs.getString("hassio-domain");
-      _hassioPort = prefs.getString("hassio-port") ?? '8123';
-      _hassioPassword = prefs.getString("hassio-password");
-      _socketProtocol = prefs.getString("hassio-protocol") ?? 'wss';
-      _authType = prefs.getString("hassio-auth-type") ?? 'access_token';
-    });
-  }
-
-  _saveSettings() async {
-    if (_hassioDomain.indexOf("http") == 0 && _hassioDomain.indexOf("//") > 0) {
-      _hassioDomain = _hassioDomain.split("//")[1];
-    }
-    SharedPreferences prefs = await SharedPreferences.getInstance();
-    prefs.setString("hassio-domain", _hassioDomain);
-    prefs.setString("hassio-port", _hassioPort);
-    prefs.setString("hassio-password", _hassioPassword);
-    prefs.setString("hassio-protocol", _socketProtocol);
-    prefs.setString("hassio-res-protocol", _socketProtocol == "wss" ? "https" : "http");
-    prefs.setString("hassio-auth-type", _authType);
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return new Scaffold(
-      appBar: new AppBar(
-        leading: IconButton(icon: Icon(Icons.arrow_back), onPressed: (){
-          _saveSettings().then((r){
-            Navigator.pop(context);
-          });
-          eventBus.fire(SettingsChangedEvent(true));
-        }),
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
-        title: new Text(widget.title),
-      ),
-      body: ListView(
-        padding: const EdgeInsets.all(20.0),
-        children: <Widget>[
-          new Row(
-            children: [
-              Text("HTTPS"),
-              Switch(
-                value: (_socketProtocol == "wss"),
-                onChanged: (value) {
-                  setState(() {
-                    _socketProtocol = value ? "wss" : "ws";
-                  });
-                  _saveSettings();
-                },
-              )
-            ],
-          ),
-          new TextField(
-            decoration: InputDecoration(
-              labelText: "Home Assistant domain or ip address"
-            ),
-            controller: TextEditingController(
-              text: _hassioDomain
-            ),
-            onChanged: (value) {
-              _hassioDomain = value;
-              _saveSettings();
-            },
-          ),
-          new TextField(
-            decoration: InputDecoration(
-              labelText: "Home Assistant port"
-            ),
-            controller: TextEditingController(
-              text: _hassioPort
-            ),
-            onChanged: (value) {
-              _hassioPort = value;
-              _saveSettings();
-            },
-          ),
-          new Row(
-            children: [
-              Text("Login with access token (HA >= 0.78.0)"),
-              Switch(
-                value: (_authType == "access_token"),
-                onChanged: (value) {
-                  setState(() {
-                    _authType = value ? "access_token" : "api_password";
-                  });
-                  _saveSettings();
-                },
-              )
-            ],
-          ),
-          new TextField(
-            decoration: InputDecoration(
-                labelText: _authType == "access_token" ? "Access token" : "API password"
-            ),
-            controller: TextEditingController(
-                text: _hassioPassword
-            ),
-            onChanged: (value) {
-              _hassioPassword = value;
-              _saveSettings();
-            },
-          )
-        ],
-      ),
-    );
-  }
-}

lib/utils.class.dart

@@ -0,0 +1,87 @@
+part of 'main.dart';
+
+class TheLogger {
+
+  static List<String> _log = [];
+
+  static String getLog() {
+    String res = '';
+    _log.forEach((line) {
+      res += "$line\n";
+    });
+    return res;
+  }
+
+  static bool get isInDebugMode {
+    bool inDebugMode = false;
+
+    assert(inDebugMode = true);
+
+    return inDebugMode;
+  }
+
+  static void log(String level, String message) {
+    if (isInDebugMode) {
+      debugPrint('$message');
+    }
+    _log.add("[$level] :  $message");
+    if (_log.length > 50) {
+      _log.removeAt(0);
+    }
+  }
+
+}
+
+class HAUtils {
+  static void launchURL(String url) async {
+    if (await canLaunch(url)) {
+      await launch(url);
+    } else {
+      TheLogger.log("Error", "Could not launch $url");
+    }
+  }
+}
+
+class StateChangedEvent {
+  String entityId;
+  String newState;
+  bool localChange;
+
+  StateChangedEvent(this.entityId, this.newState, this.localChange);
+}
+
+class SettingsChangedEvent {
+  bool reconnect;
+
+  SettingsChangedEvent(this.reconnect);
+}
+
+class RefreshDataEvent {
+  RefreshDataEvent();
+}
+
+class RefreshDataFinishedEvent {
+  RefreshDataFinishedEvent();
+}
+
+class ServiceCallEvent {
+  String domain;
+  String service;
+  String entityId;
+  Map<String, dynamic> additionalParams;
+
+  ServiceCallEvent(this.domain, this.service, this.entityId, this.additionalParams);
+}
+
+class ShowEntityPageEvent {
+  Entity entity;
+
+  ShowEntityPageEvent(this.entity);
+}
+
+class ShowErrorEvent {
+  String text;
+  int errorCode;
+
+  ShowErrorEvent(this.text, this.errorCode);
+}

lib/view_builder.class.dart

@@ -0,0 +1,101 @@
+part of 'main.dart';
+
+class ViewBuilder{
+
+  EntityCollection entityCollection;
+  List<View> _views;
+
+  ViewBuilder({
+    Key key,
+    this.entityCollection
+  }) {
+    _compose();
+  }
+
+  Widget buildWidget(BuildContext context) {
+    return ViewBuilderWidget(
+      entities: _views
+    );
+  }
+
+  void _compose() {
+    TheLogger.log("Debug", "Rebuilding all UI...");
+    _views = [];
+    if (!entityCollection.hasDefaultView) {
+      _views.add(_composeDefaultView());
+    }
+    _views.addAll(_composeViews());
+  }
+
+  View _composeDefaultView() {
+    Map<String, List<String>> userGroupsList = entityCollection.getDefaultViewTopLevelEntities();
+    List<Entity> entitiesForView = [];
+    userGroupsList["userGroups"].forEach((groupId){
+      entitiesForView.add(entityCollection.get(groupId));
+    });
+    userGroupsList["notGroupedEntities"].forEach((entityId){
+      entitiesForView.add(entityCollection.get(entityId));
+    });
+    return View(
+      entities: entitiesForView,
+      count: 0
+    );
+  }
+
+  List<View> _composeViews() {
+    List<View> result = [];
+    int counter = 0;
+    entityCollection.viewList.forEach((viewId) {
+      counter += 1;
+      //try {
+        Entity viewGroupEntity = entityCollection.get(viewId);
+        List<Entity> entitiesForView = [];
+        viewGroupEntity.childEntityIds.forEach((
+            entityId) { //Each entity or group in view
+          if (entityCollection.isExist(entityId)) {
+            Entity en = entityCollection.get(entityId);
+            if (en.isGroup) {
+              en.childEntities = entityCollection.getAll(en.childEntityIds);
+            }
+            entitiesForView.add(en);
+          } else {
+            TheLogger.log("Warning", "Unknown entity inside view: $entityId");
+          }
+        });
+        result.add(View(
+          count: counter,
+          entities: entitiesForView
+        ));
+      /*} catch (error) {
+        TheLogger.log("Error","Error parsing view: $viewId");
+      }*/
+    });
+    return result;
+  }
+}
+
+class ViewBuilderWidget extends StatelessWidget {
+
+  final List<View> entities;
+
+  const ViewBuilderWidget({
+    Key key,
+    this.entities
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return TabBarView(
+        children: _buildChildren(context)
+    );
+  }
+
+  List<Widget> _buildChildren(BuildContext context) {
+    List<Widget> result = [];
+    entities.forEach((View view){
+      result.add(view.buildWidget(context));
+    });
+    return result;
+  }
+
+}

lib/view_class.dart

@@ -0,0 +1,158 @@
+part of 'main.dart';
+
+class View {
+  List<Entity> childEntitiesAsBadges;
+  Map<String, CardSkeleton> childEntitiesAsCards;
+
+  int count;
+  List<Entity> entities;
+
+  View({
+    Key key,
+    this.count,
+    this.entities
+  }) {
+    childEntitiesAsBadges = [];
+    childEntitiesAsCards = {};
+    _composeEntities();
+  }
+
+  Widget buildWidget(BuildContext context) {
+    return ViewWidget(
+      badges: childEntitiesAsBadges,
+      cards: childEntitiesAsCards,
+    );
+  }
+
+  void _composeEntities() {
+    entities.forEach((Entity entity){
+      if (!entity.isGroup) {
+        if (entity.isBadge) {
+          childEntitiesAsBadges.add(entity);
+        } else {
+          String groupIdToAdd = "${entity.domain}.${entity.domain}$count";
+          if (childEntitiesAsCards[groupIdToAdd] == null) {
+            childEntitiesAsCards[groupIdToAdd] = CardSkeleton(
+              displayName: entity.domain,
+            );
+          }
+          childEntitiesAsCards[groupIdToAdd].childEntities.add(entity);
+        }
+      } else {
+        childEntitiesAsCards[entity.entityId] = CardSkeleton(
+          displayName: entity.displayName,
+        );
+        childEntitiesAsCards[entity.entityId].childEntities = entity.childEntities;
+      }
+    });
+  }
+
+}
+
+class ViewWidget extends StatefulWidget {
+  final List<Entity> badges;
+  final Map<String, CardSkeleton> cards;
+  final String displayName;
+
+  const ViewWidget({
+    Key key,
+    this.badges,
+    this.cards,
+    this.displayName
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() {
+    return ViewWidgetState();
+  }
+
+}
+
+class ViewWidgetState extends State<ViewWidget> {
+
+  StreamSubscription _refreshDataSubscription;
+  Completer _refreshCompleter;
+
+  @override
+  void initState() {
+    super.initState();
+    _refreshDataSubscription = eventBus.on<RefreshDataFinishedEvent>().listen((event) {
+      if ((_refreshCompleter != null) && (!_refreshCompleter.isCompleted)) {
+        _refreshCompleter.complete();
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return RefreshIndicator(
+      color: Colors.amber,
+      child: ListView(
+        physics: const AlwaysScrollableScrollPhysics(),
+        children: _buildChildren(context),
+      ),
+      onRefresh: () => _refreshData(),
+    );
+  }
+
+  List<Widget> _buildChildren(BuildContext context) {
+    List<Widget> result = [];
+
+    if (widget.badges.isNotEmpty) {
+      result.insert(0,
+          Wrap(
+            alignment: WrapAlignment.center,
+            spacing: 10.0,
+            runSpacing: 1.0,
+            children: _buildBadges(context, widget.badges),
+          )
+      );
+    }
+
+    widget.cards.forEach((String id, CardSkeleton skeleton){
+      result.add(
+          HACard(
+            entities: skeleton.childEntities,
+            friendlyName: skeleton.displayName,
+          )
+      );
+    });
+
+    return result;
+  }
+
+  List<Widget> _buildBadges(BuildContext context, List<Entity> badges) {
+    List<Widget> result = [];
+    badges.forEach((Entity entity) {
+      result.add(entity.buildBadgeWidget(context));
+    });
+    return result;
+  }
+
+  Future _refreshData() {
+    if ((_refreshCompleter != null) && (!_refreshCompleter.isCompleted)) {
+      TheLogger.log("Debug","Previous data refresh is still in progress");
+    } else {
+      _refreshCompleter = Completer();
+      eventBus.fire(RefreshDataEvent());
+    }
+    return _refreshCompleter.future;
+  }
+
+  @override
+  void dispose() {
+    _refreshDataSubscription.cancel();
+    super.dispose();
+  }
+
+
+}
+
+class CardSkeleton {
+  String displayName;
+  List<Entity> childEntities;
+
+  CardSkeleton({Key key, this.displayName, this.childEntities}) {
+    childEntities = [];
+  }
+}

pubspec.lock

@@ -87,6 +87,13 @@ packages:
       url: "https://github.com/MarkOSullivan94/dart_config.git"
     source: git
     version: "0.5.0"
+  date_format:
+    dependency: "direct main"
+    description:
+      name: date_format
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.5"
   event_bus:
     dependency: "direct main"
     description:
@@ -107,7 +114,7 @@ packages:
     source: hosted
     version: "0.1.2"
   flutter_launcher_icons:
-    dependency: "direct main"
+    dependency: "direct dev"
     description:
       name: flutter_launcher_icons
       url: "https://pub.dartlang.org"
@@ -244,13 +251,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.5"
-  package_info:
-    dependency: "direct main"
-    description:
-      name: package_info
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.3.2"
   package_resolver:
     dependency: transitive
     description:
@@ -278,7 +278,7 @@ packages:
       name: petitparser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.2"
   plugin:
     dependency: transitive
     description:
@@ -320,7 +320,7 @@ packages:
       name: shared_preferences
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.2"
+    version: "0.4.3"
   shelf:
     dependency: transitive
     description:
@@ -424,6 +424,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.6"
+  url_launcher:
+    dependency: "direct main"
+    description:
+      name: url_launcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.3"
   utf:
     dependency: transitive
     description:
@@ -472,7 +479,7 @@ packages:
       name: xml
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.2.1"
+    version: "3.2.3"
   yaml:
     dependency: transitive
     description:
@@ -481,5 +488,5 @@ packages:
     source: hosted
     version: "2.1.15"
 sdks:
-  dart: ">=2.0.0 <=2.1.0-dev.3.1.flutter-760a9690c2"
+  dart: ">=2.0.0 <=2.1.0-dev.5.0.flutter-a2eb050044"
   flutter: ">=0.1.4 <2.0.0"

pubspec.yaml

@@ -1,7 +1,7 @@
 name: hass_client
 description: Home Assistant Android Client
 
-version: 0.1.1-alpha
+version: 0.3.0+38
 
 environment:
   sdk: ">=2.0.0-dev.68.0 <3.0.0"
@@ -12,9 +12,9 @@ dependencies:
   shared_preferences: any
   progress_indicators: ^0.1.2
   event_bus: ^1.0.1
-  package_info: ^0.3.2
-  flutter_launcher_icons: ^0.6.1
   cached_network_image: ^0.4.1
+  url_launcher: ^3.0.3
+  date_format: ^1.0.5
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
@@ -23,6 +23,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
+  flutter_launcher_icons: ^0.6.1
 
 flutter_icons:
   android: true

test/widget_test.dart

@@ -12,7 +12,7 @@ import 'package:hass_client/main.dart';
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(new HassClientApp());
+    await tester.pumpWidget(new HAClientApp());
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);