Project structure change in progress

lib/entities/date_time/date_time_entity.class.dart

@@ -0,0 +1,42 @@
+part of '../../main.dart';
+
+class DateTimeEntity extends Entity {
+  DateTimeEntity(Map rawData, String webHost) : super(rawData, webHost);
+
+  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();
+
+  @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));
+  }
+}

lib/entities/date_time/widgets/date_time_state.dart

@@ -0,0 +1,75 @@
+part of '../../../main.dart';
+
+class DateTimeStateWidget extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    final entityModel = EntityModel.of(context);
+    final DateTimeEntity entity = entityModel.entityWrapper.entity;
+    return Padding(
+        padding: EdgeInsets.fromLTRB(0.0, 0.0, Sizes.rightWidgetPadding, 0.0),
+        child: GestureDetector(
+          child: Text("${entity.formattedState}",
+              textAlign: TextAlign.right,
+              style: new TextStyle(
+                fontSize: Sizes.stateFontSize,
+              )),
+          onTap: () => _handleStateTap(context, entity),
+        ));
+  }
+
+  void _handleStateTap(BuildContext context, DateTimeEntity entity) {
+    if (entity.hasDate) {
+      _showDatePicker(context, entity).then((date) {
+        if (date != null) {
+          if (entity.hasTime) {
+            _showTimePicker(context, entity).then((time) {
+              entity.setNewState({
+                "date": "${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":
+            "${formatDate(DateTime(1970, 1, 1, time.hour, time.minute), [
+              HH,
+              ':',
+              nn
+            ])}"
+          });
+        }
+      });
+    } else {
+      Logger.w( "${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));
+  }
+}