Resolves #145 Fan support

lib/entity_class/fan_entity.class.dart

@@ -0,0 +1,32 @@
+part of '../main.dart';
+
+class FanEntity extends Entity {
+
+  static const SUPPORT_SET_SPEED = 1;
+  static const SUPPORT_OSCILLATE = 2;
+  static const SUPPORT_DIRECTION = 4;
+
+  FanEntity(Map rawData) : super(rawData);
+
+  bool get supportSetSpeed => ((attributes["supported_features"] &
+  FanEntity.SUPPORT_SET_SPEED) ==
+      FanEntity.SUPPORT_SET_SPEED);
+  bool get supportOscillate => ((attributes["supported_features"] &
+  FanEntity.SUPPORT_OSCILLATE) ==
+      FanEntity.SUPPORT_OSCILLATE);
+  bool get supportDirection => ((attributes["supported_features"] &
+  FanEntity.SUPPORT_DIRECTION) ==
+      FanEntity.SUPPORT_DIRECTION);
+
+  List<String> get speedList => getStringListAttributeValue("speed_list");
+
+  @override
+  Widget _buildStatePart(BuildContext context) {
+    return SwitchStateWidget();
+  }
+
+  @override
+  Widget _buildAdditionalControlsForPage(BuildContext context) {
+    return FanControlsWidget();
+  }
+}

lib/entity_collection.class.dart

@@ -80,6 +80,9 @@ class EntityCollection {
       case "cover": {
         return CoverEntity(rawEntityData);
       }
+      case "fan": {
+        return FanEntity(rawEntityData);
+      }
       default: {
         return Entity(rawEntityData);
       }

lib/entity_widgets/common/mode_swicth.dart

@@ -6,27 +6,22 @@ class ModeSwitchWidget extends StatelessWidget {
   final onChange;
   final double captionFontSize;
   final bool value;
+  final bool expanded;
 
   ModeSwitchWidget({
     Key key,
     @required this.caption,
     @required this.onChange,
     this.captionFontSize,
-    this.value
+    this.value,
+    this.expanded: true
   }) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
     return Row(
       children: <Widget>[
-        Expanded(
+        _buildCaption(),
-          child: Text(
-            "$caption",
-            style: TextStyle(
-                fontSize: captionFontSize ?? Sizes.stateFontSize
-            ),
-          ),
-        ),
         Switch(
           onChanged: (value) => onChange(value),
           value: value ?? false,
@@ -35,4 +30,19 @@ class ModeSwitchWidget extends StatelessWidget {
     );
   }
 
+  Widget _buildCaption() {
+    Widget captionWidget = Text(
+      "$caption",
+      style: TextStyle(
+          fontSize: captionFontSize ?? Sizes.stateFontSize
+      ),
+    );
+    if (expanded) {
+      return Expanded(
+        child: captionWidget,
+      );
+    }
+    return captionWidget;
+  }
+
 }

lib/entity_widgets/controls/fan_controls.dart

@@ -0,0 +1,123 @@
+part of '../../main.dart';
+
+class FanControlsWidget extends StatefulWidget {
+
+  @override
+  _FanControlsWidgetState createState() => _FanControlsWidgetState();
+
+}
+
+class _FanControlsWidgetState extends State<FanControlsWidget> {
+
+  bool _tmpOscillate;
+  bool _tmpDirectionForward;
+  bool _changedHere = false;
+  String _tmpSpeed;
+
+  void _resetState(FanEntity entity) {
+    _tmpOscillate = entity.attributes["oscillating"] ?? false;
+    _tmpDirectionForward = entity.attributes["direction"] == "forward";
+    _tmpSpeed = entity.attributes["speed"];
+  }
+
+  void _setOscillate(FanEntity entity, bool oscillate) {
+    setState(() {
+      _tmpOscillate = oscillate;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(
+          "fan", "oscillate", entity.entityId,
+          {"oscillating": oscillate}));
+    });
+  }
+
+  void _setDirection(FanEntity entity, bool forward) {
+    setState(() {
+      _tmpDirectionForward = forward;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(
+          "fan", "set_direction", entity.entityId,
+          {"direction": forward ? "forward" : "reverse"}));
+    });
+  }
+
+  void _setSpeed(FanEntity entity, String value) {
+    setState(() {
+      _tmpSpeed = value;
+      _changedHere = true;
+      eventBus.fire(new ServiceCallEvent(
+            "fan", "set_speed", entity.entityId,
+            {"speed": value}));
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final FanEntity entity = entityModel.entityWrapper.entity;
+    if (!_changedHere) {
+      _resetState(entity);
+    } else {
+      _changedHere = false;
+    }
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.center,
+      children: <Widget>[
+        _buildSpeedControl(entity),
+        _buildOscillateControl(entity),
+        _buildDirectionControl(entity)
+      ],
+    );
+  }
+
+  Widget _buildSpeedControl(FanEntity entity) {
+    if (entity.supportSetSpeed && entity.speedList != null && entity.speedList.isNotEmpty) {
+      return ModeSelectorWidget(
+        onChange: (effect) => _setSpeed(entity, effect),
+        caption: "Speed",
+        options: entity.speedList,
+        value: _tmpSpeed
+      );
+    } else {
+      return Container(width: 0.0, height: 0.0);
+    }
+  }
+
+  Widget _buildOscillateControl(FanEntity entity) {
+    if (entity.supportOscillate) {
+      return ModeSwitchWidget(
+          onChange: (value) => _setOscillate(entity, value),
+          caption: "Oscillate",
+          value: _tmpOscillate,
+          expanded: false,
+      );
+    } else {
+      return Container(width: 0.0, height: 0.0);
+    }
+  }
+
+  Widget _buildDirectionControl(FanEntity entity) {
+    if (entity.supportDirection) {
+      return Row(
+        mainAxisSize: MainAxisSize.min,
+        children: <Widget>[
+          IconButton(
+            onPressed: _tmpDirectionForward ?
+              () => _setDirection(entity, false) :
+              null,
+            icon: Icon(Icons.rotate_left),
+          ),
+          IconButton(
+            onPressed: !_tmpDirectionForward ?
+              () => _setDirection(entity, true) :
+              null,
+            icon: Icon(Icons.rotate_right),
+          ),
+        ],
+      );
+    } else {
+      return Container(width: 0.0, height: 0.0);
+    }
+  }
+
+
+}

lib/main.dart

@@ -31,6 +31,7 @@ part 'entity_class/slider_entity.dart';
 part 'entity_class/media_player_entity.class.dart';
 part 'entity_class/lock_entity.class.dart';
 part 'entity_class/group_entity.class.dart';
+part 'entity_class/fan_entity.class.dart';
 part 'entity_widgets/common/badge.dart';
 part 'entity_widgets/model_widgets.dart';
 part 'entity_widgets/default_entity_container.dart';
@@ -64,6 +65,7 @@ part 'entity_widgets/controls/climate_controls.dart';
 part 'entity_widgets/controls/cover_controls.dart';
 part 'entity_widgets/controls/light_controls.dart';
 part 'entity_widgets/controls/media_player_widgets.dart';
+part 'entity_widgets/controls/fan_controls.dart';
 part 'settings.page.dart';
 part 'home_assistant.class.dart';
 part 'log.page.dart';

lib/mdi.class.dart

@@ -24,6 +24,7 @@ class MaterialDesignIcons {
     "cover.opening": "mdi:window-open",
     "lock.locked": "mdi:lock",
     "lock.unlocked": "mdi:lock-open",
+    "fan": "mdi:fan"
   };
 
   static Map _defaultIconsByDeviceClass = {