Resolves #100 input_datetime

lib/entity.class.dart

@@ -92,7 +92,7 @@ class Entity {
     return;
   }
 
-  Widget buildWidget(bool inCard) {
+  Widget buildWidget(bool inCard, BuildContext context) {
     return SizedBox(
       height: Entity.WIDGET_HEIGHT,
       child: Row(
@@ -107,7 +107,7 @@ class Entity {
               onTap: inCard ? openEntityPage : null,
             ),
           ),
-          _buildActionWidget(inCard)
+          _buildActionWidget(inCard, context)
         ],
       ),
     );
@@ -152,7 +152,7 @@ class Entity {
     );
   }
 
-  Widget _buildActionWidget(bool inCard) {
+  Widget _buildActionWidget(bool inCard, BuildContext context) {
     return Padding(
         padding:
             EdgeInsets.fromLTRB(0.0, 0.0, Entity.RIGHT_WIDGET_PADDING, 0.0),
@@ -164,12 +164,9 @@ class Entity {
                 fontSize: Entity.STATE_FONT_SIZE,
               )),
           onTap: openEntityPage,
-        ));
+        )
+    );
   }
-
-  /*Widget _buildExtendedActionWidget(BuildContext context, String staticState) {
-    return _buildActionWidget(context);
-  }*/
 }
 
 class SwitchEntity extends Entity {
@@ -182,7 +179,7 @@ class SwitchEntity extends Entity {
   }
 
   @override
-  Widget _buildActionWidget(bool inCard) {
+  Widget _buildActionWidget(bool inCard, BuildContext context) {
     return Switch(
       value: this.isOn,
       onChanged: ((switchState) {
@@ -201,7 +198,7 @@ class ButtonEntity extends Entity {
   }
 
   @override
-  Widget _buildActionWidget(bool inCard) {
+  Widget _buildActionWidget(bool inCard, BuildContext context) {
     return FlatButton(
       onPressed: (() {
         sendNewState(null);
@@ -216,6 +213,9 @@ class ButtonEntity extends Entity {
   }
 }
 
+//
+//    SLIDER
+//
 class SliderEntity extends Entity {
   int _multiplier = 1;
 
@@ -239,7 +239,7 @@ class SliderEntity extends Entity {
   }
 
   @override
-  Widget _buildActionWidget(bool inCard) {
+  Widget _buildActionWidget(bool inCard, BuildContext context) {
     return Container(
       width: 200.0,
       child: Row(
@@ -253,7 +253,6 @@ class SliderEntity extends Entity {
                   ? this.doubleState * _multiplier
                   : this.minValue * _multiplier,
               onChanged: (value) {
-                //debugPrint("$value");
                 eventBus.fire(new StateChangedEvent(_entityId,
                   (value.roundToDouble() / _multiplier).toString(), true));
                 },
@@ -276,6 +275,103 @@ class SliderEntity extends Entity {
   }
 }
 
+//
+//    DATETIME
+//
+
+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);
+
+  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;
+  }
+
+  @override
+  void sendNewState(newValue) {
+    eventBus.fire(new ServiceCallEvent(_domain, "set_datetime", _entityId,
+        newValue));
+  }
+
+  @override
+  Widget _buildActionWidget(bool inCard, BuildContext context) {
+    return Padding(
+        padding:
+        EdgeInsets.fromLTRB(0.0, 0.0, Entity.RIGHT_WIDGET_PADDING, 0.0),
+        child: GestureDetector(
+          child: Text(
+              "$formattedState",
+              textAlign: TextAlign.right,
+              style: new TextStyle(
+                fontSize: Entity.STATE_FONT_SIZE,
+              )),
+          onTap: () => _handleStateTap(context),
+        )
+    );
+  }
+
+  void _handleStateTap(BuildContext context) {
+    if (hasDate) {
+      _showDatePicker(context).then((date) {
+        if (date != null) {
+          if (hasTime) {
+            _showTimePicker(context).then((time){
+              sendNewState({"date": "${formatDate(date, [yyyy, '-', mm, '-', dd])}", "time": "${formatDate(DateTime(1970, 1, 1, time.hour, time.minute), [HH, ':', nn])}"});
+            });
+          } else {
+            sendNewState({"date": "${formatDate(date, [yyyy, '-', mm, '-', dd])}"});
+          }
+        }
+      });
+    } else if (hasTime) {
+      _showTimePicker(context).then((time){
+        if (time != null) {
+          sendNewState({"time": "${formatDate(DateTime(1970, 1, 1, time.hour, time.minute), [HH, ':', nn])}"});
+        }
+      });
+    } else {
+      TheLogger.log("Warning", "$entityId has no date and no time");
+    }
+  }
+  
+  Future _showDatePicker(BuildContext context) {
+    return showDatePicker(
+        context: context,
+        initialDate: dateTimeState,
+        firstDate: DateTime(1970),
+        lastDate: DateTime(2037) //Unix timestamp will finish at Jan 19, 2038
+    );
+  }
+
+  Future _showTimePicker(BuildContext context) {
+    return showTimePicker(
+        context: context,
+        initialTime: TimeOfDay.fromDateTime(dateTimeState)
+    );
+  }
+}
+
 class SelectEntity extends Entity {
   List<String> _listOptions = [];
   String get initialValue => _attributes["initial"] ?? null;
@@ -295,7 +391,7 @@ class SelectEntity extends Entity {
   }
 
   @override
-  Widget _buildActionWidget(bool inCard) {
+  Widget _buildActionWidget(bool inCard, BuildContext context) {
     return Container(
       width: Entity.INPUT_WIDTH,
       child: DropdownButton<String>(
@@ -366,7 +462,7 @@ class TextEntity extends Entity {
   }
 
   @override
-  Widget _buildActionWidget(bool inCard) {
+  Widget _buildActionWidget(bool inCard, BuildContext context) {
     if (this.isTextField || this.isPasswordField) {
       return Container(
         width: Entity.INPUT_WIDTH,
@@ -384,7 +480,7 @@ class TextEntity extends Entity {
       );
     } else {
       TheLogger.log("Warning", "Unsupported input mode for $entityId");
-      return super._buildActionWidget(inCard);
+      return super._buildActionWidget(inCard, context);
     }
   }
 }

lib/entity.page.dart

@@ -46,7 +46,7 @@ class _EntityViewPageState extends State<EntityViewPage> {
           padding: EdgeInsets.all(10.0),
           child: ListView(
             children: <Widget>[
-              _entity.buildWidget(false),
+              _entity.buildWidget(false, context),
               _entity.buildAdditionalWidget()
             ],
           ),

lib/entity_collection.class.dart

@@ -40,6 +40,10 @@ class EntityCollection {
         return ButtonEntity(rawEntityData);
       }
 
+      case "input_datetime": {
+        return DateTimeEntity(rawEntityData);
+      }
+
       case "input_select": {
         return SelectEntity(rawEntityData);
       }

lib/main.dart

@@ -409,7 +409,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
         entities.add(
           Padding(
             padding: EdgeInsets.fromLTRB(0.0, 10.0, 0.0, 10.0),
-            child: entity.buildWidget(true),
+            child: entity.buildWidget(true, context),
           ));
       }
     });