WIP #120 History chart based on attributes

lib/entity_class/climate_entity.class.dart

@@ -4,6 +4,13 @@ class ClimateEntity extends Entity {
   @override
   double widgetHeight = 38.0;
 
+  @override
+  EntityHistoryConfig historyConfig = EntityHistoryConfig(
+    chartType: EntityHistoryWidgetType.numericAttributes,
+    numericState: false,
+    numericAttributesToShow: ["temperature", "current_temperature"]
+  );
+
   static const SUPPORT_TARGET_TEMPERATURE = 1;
   static const SUPPORT_TARGET_TEMPERATURE_HIGH = 2;
   static const SUPPORT_TARGET_TEMPERATURE_LOW = 4;

lib/entity_class/entity.class.dart

@@ -38,7 +38,9 @@ class Entity {
 
   List<Entity> childEntities = [];
   List<String> attributesToShow = ["all"];
-  int historyWidgetType = EntityHistoryWidgetType.simple;
+  EntityHistoryConfig historyConfig = EntityHistoryConfig(
+    chartType: EntityHistoryWidgetType.simple
+  );
 
   String get displayName =>
       attributes["friendly_name"] ?? (attributes["name"] ?? "_");
@@ -136,7 +138,7 @@ class Entity {
 
   Widget buildHistoryWidget() {
     return EntityHistoryWidget(
-      type: historyWidgetType,
+      config: historyConfig,
     );
   }
 

lib/entity_class/other_entity.class.dart

@@ -7,7 +7,10 @@ class SunEntity extends Entity {
 class SensorEntity extends Entity {
 
   @override
-  int historyWidgetType = EntityHistoryWidgetType.valueToTime;
+  EntityHistoryConfig historyConfig = EntityHistoryConfig(
+      chartType: EntityHistoryWidgetType.numericState,
+      numericState: true
+  );
 
   SensorEntity(Map rawData) : super(rawData);
 

lib/entity_widgets/entity_colors.class.dart

@@ -48,7 +48,7 @@ class EntityColors {
         charts.Color c1 = charts.MaterialPalette.getOrderedPalettes(id + 1)[id].shadeDefault;
         return Color.fromARGB(c1.a, c1.r, c1.g, c1.b);
       } else {
-        return _stateColors["default"];
+        return _stateColors["on"];
       }
     }
   }

lib/entity_widgets/history_chart/combined_history_chart.dart

@@ -0,0 +1,264 @@
+part of '../../main.dart';
+
+class CombinedHistoryChartWidget extends StatefulWidget {
+  final rawHistory;
+  final EntityHistoryConfig config;
+
+  const CombinedHistoryChartWidget({Key key, @required this.rawHistory, @required this.config}) : super(key: key);
+
+
+  @override
+  State<StatefulWidget> createState() {
+    return new _CombinedHistoryChartWidgetState();
+  }
+
+}
+
+class _CombinedHistoryChartWidgetState extends State<CombinedHistoryChartWidget> {
+
+  int _selectedId = -1;
+  List<charts.Series<CombinedEntityStateHistoryMoment, DateTime>> _parsedHistory;
+
+  @override
+  Widget build(BuildContext context) {
+    _parsedHistory = _parseHistory();
+    DateTime selectedTime;
+    List<String> selectedStates = [];
+    List<int> colorIndexes = [];
+    if ((_selectedId > -1) && (_parsedHistory != null) && (_parsedHistory.first.data.length >= (_selectedId + 1))) {
+      selectedTime = _parsedHistory.first.data[_selectedId].time;
+      _parsedHistory.where((item) { return item.id == "value"; }).forEach((item) {
+        selectedStates.add("${item.data[_selectedId].value}");
+        colorIndexes.add(item.data[_selectedId].colorId);
+      });
+    }
+    return Column(
+      mainAxisAlignment: MainAxisAlignment.start,
+      crossAxisAlignment: CrossAxisAlignment.center,
+      children: <Widget>[
+        CombinedHistoryControlWidget(
+          selectedTimeStart: selectedTime,
+          selectedStates: selectedStates,
+          onPrevTap: () => _selectPrev(),
+          onNextTap: () => _selectNext(),
+          colorIndexes: colorIndexes,
+        ),
+        SizedBox(
+          height: 150.0,
+          child: charts.TimeSeriesChart(
+            _parsedHistory,
+            animate: false,
+            primaryMeasureAxis: new charts.NumericAxisSpec(
+                tickProviderSpec:
+                new charts.BasicNumericTickProviderSpec(zeroBound: false)),
+            dateTimeFactory: const charts.LocalDateTimeFactory(),
+            defaultRenderer: charts.LineRendererConfig(includeArea: false),
+            customSeriesRenderers: [
+              new charts.PointRendererConfig(
+                // ID used to link series to this renderer.
+                  customRendererId: 'valuePoints')
+            ],
+            /*primaryMeasureAxis: charts.NumericAxisSpec(
+                renderSpec: charts.NoneRenderSpec()
+            ),*/
+            selectionModels: [
+              new charts.SelectionModelConfig(
+                type: charts.SelectionModelType.info,
+                listener: (model) => _onSelectionChanged(model),
+              )
+            ],
+            behaviors: [
+              charts.PanAndZoomBehavior(),
+            ],
+          ),
+        )
+      ],
+    );
+  }
+
+  double _parseToDouble(temp1) {
+    if (temp1 is int) {
+      return temp1.toDouble();
+    } else if (temp1 is double) {
+      return temp1;
+    } else {
+      return double.tryParse("$temp1");
+    }
+  }
+
+  List<charts.Series<CombinedEntityStateHistoryMoment, DateTime>> _parseHistory() {
+    TheLogger.debug("  parsing history...");
+    Map<String, List<CombinedEntityStateHistoryMoment>> dataList = {};
+    int colorIdCounter = 0;
+    widget.config.numericAttributesToShow.forEach((String attrName) {
+      TheLogger.debug("    parsing attribute $attrName");
+      List<CombinedEntityStateHistoryMoment> data = [];
+      DateTime now = DateTime.now();
+      for (var i = 0; i < widget.rawHistory.length; i++) {
+        var stateData = widget.rawHistory[i];
+        DateTime time = DateTime.tryParse(stateData["last_updated"])?.toLocal();
+        if (stateData["attributes"] != null) {
+          data.add(CombinedEntityStateHistoryMoment(_parseToDouble(stateData["attributes"]["$attrName"]), stateData["state"], time, i, colorIdCounter));
+        } else {
+          data.add(CombinedEntityStateHistoryMoment(null, stateData["state"], time, i, colorIdCounter));
+        }
+      }
+      data.add(CombinedEntityStateHistoryMoment(data.last.value, data.last.state, now, widget.rawHistory.length, colorIdCounter));
+      dataList.addAll({attrName: data});
+      colorIdCounter += 1;
+    });
+
+    if ((_selectedId == -1) && (dataList.isNotEmpty)) {
+      _selectedId = 0;
+    }
+    List<charts.Series<CombinedEntityStateHistoryMoment, DateTime>> result = [];
+    dataList.forEach((attrName, dataItem) {
+      TheLogger.debug("  adding ${dataItem.length} data values");
+      result.addAll([
+        new charts.Series<CombinedEntityStateHistoryMoment, DateTime>(
+          id: "value",
+          colorFn: (CombinedEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor("_", historyMoment.colorId),
+          domainFn: (CombinedEntityStateHistoryMoment historyMoment, _) => historyMoment.time,
+          measureFn: (CombinedEntityStateHistoryMoment historyMoment, _) => historyMoment.value,
+          data: dataItem,
+        ),
+        new charts.Series<CombinedEntityStateHistoryMoment, DateTime>(
+          id: "points",
+          radiusPxFn: (CombinedEntityStateHistoryMoment historyMoment, __) => (historyMoment.id == _selectedId) ? 5.0 : 1.0,
+          colorFn: (CombinedEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor("_", historyMoment.colorId),
+          domainFn: (CombinedEntityStateHistoryMoment historyMoment, _) => historyMoment.time,
+          measureFn: (CombinedEntityStateHistoryMoment historyMoment, _) => historyMoment.value,
+          data: dataItem,
+        )..setAttribute(charts.rendererIdKey, 'valuePoints')
+      ]);
+    });
+    return result;
+  }
+
+  void _selectPrev() {
+    if (_selectedId > 0) {
+      setState(() {
+        _selectedId -= 1;
+      });
+    }
+  }
+
+  void _selectNext() {
+    if (_selectedId < (_parsedHistory.first.data.length - 1)) {
+      setState(() {
+        _selectedId += 1;
+      });
+    }
+  }
+
+  void _onSelectionChanged(charts.SelectionModel model) {
+    final selectedDatum = model.selectedDatum;
+
+    int selectedId;
+
+    if (selectedDatum.isNotEmpty) {
+      selectedId = selectedDatum.first.datum.id;
+      setState(() {
+        _selectedId = selectedId;
+      });
+    } else {
+      setState(() {
+      });
+    }
+  }
+}
+
+class CombinedHistoryControlWidget extends StatelessWidget {
+
+  final Function onPrevTap;
+  final Function onNextTap;
+  final DateTime selectedTimeStart;
+  final DateTime selectedTimeEnd;
+  final List<String> selectedStates;
+  final List<int> colorIndexes;
+
+  const CombinedHistoryControlWidget({Key key, this.onPrevTap, this.onNextTap, this.selectedTimeStart, this.selectedTimeEnd, this.selectedStates, @ required this.colorIndexes}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    if (selectedTimeStart != null) {
+      return
+        Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          crossAxisAlignment: CrossAxisAlignment.center,
+          children: <Widget>[
+            IconButton(
+              icon: Icon(Icons.chevron_left),
+              padding: EdgeInsets.all(0.0),
+              iconSize: 40.0,
+              onPressed: onPrevTap,
+            ),
+            Expanded(
+              child: Padding(
+                padding: EdgeInsets.only(right: 10.0),
+                child: _buildStates(),
+              ),
+            ),
+            _buildTime(),
+            IconButton(
+              icon: Icon(Icons.chevron_right),
+              padding: EdgeInsets.all(0.0),
+              iconSize: 40.0,
+              onPressed: onNextTap,
+            ),
+          ],
+        );
+
+    } else {
+      return Container(height: 48.0);
+    }
+  }
+
+  Widget _buildStates() {
+    List<Widget> children = [];
+    for (int i = 0; i < selectedStates.length; i++) {
+      children.add(
+          Text(
+            "${selectedStates[i]}",
+            textAlign: TextAlign.right,
+            style: TextStyle(
+                fontWeight: FontWeight.bold,
+                color: EntityColors.historyStateColor(selectedStates[i], colorIndexes[i]),
+                fontSize: 22.0
+            ),
+          )
+      );
+    }
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.end,
+      children: children,
+    );
+  }
+
+  Widget _buildTime() {
+    List<Widget> children = [];
+    children.add(
+        Text("${formatDate(selectedTimeStart, [M, ' ', d, ', ', HH, ':', nn, ':', ss])}", textAlign: TextAlign.left,)
+    );
+    if (selectedTimeEnd != null) {
+      children.add(
+          Text("${formatDate(selectedTimeEnd, [M, ' ', d, ', ', HH, ':', nn, ':', ss])}", textAlign: TextAlign.left,)
+      );
+    }
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: children,
+    );
+  }
+
+}
+
+class CombinedEntityStateHistoryMoment {
+  final DateTime time;
+  final double value;
+  final int id;
+  final int colorId;
+  final String state;
+
+  CombinedEntityStateHistoryMoment(this.value, this.state, this.time,  this.id, this.colorId);
+}

lib/entity_widgets/history_chart/entity_history.dart

@@ -2,15 +2,24 @@ part of '../../main.dart';
 
 class EntityHistoryWidgetType {
   static const int simple = 0;
-  static const int valueToTime = 1;
+  static const int numericState = 1;
-  static const int randomColors = 2;
+  static const int numericAttributes = 2;
+}
+
+class EntityHistoryConfig {
+  final int chartType;
+  final List<String> numericAttributesToShow;
+  final bool numericState;
+
+  EntityHistoryConfig({this.chartType, this.numericAttributesToShow, this.numericState: true});
+
 }
 
 class EntityHistoryWidget extends StatefulWidget {
 
-  final int type;
+  final EntityHistoryConfig config;
 
-  const EntityHistoryWidget({Key key, @required this.type}) : super(key: key);
+  const EntityHistoryWidget({Key key, @required this.config}) : super(key: key);
 
   @override
   _EntityHistoryWidgetState createState() {
@@ -74,7 +83,7 @@ class _EntityHistoryWidgetState extends State<EntityHistoryWidget> {
     }
     children.add(Divider());
     return Padding(
-      padding: EdgeInsets.fromLTRB(0.0, Entity.rowPadding, 0.0, Entity.rowPadding),
+      padding: EdgeInsets.fromLTRB(0.0, 0.0, 0.0, Entity.rowPadding),
       child: Column(
         children: children,
       ),
@@ -82,20 +91,34 @@ class _EntityHistoryWidgetState extends State<EntityHistoryWidget> {
   }
 
   Widget _selectChartWidget() {
-    switch (widget.type) {
+    TheLogger.debug("  selecting history widget (${widget.config.chartType})");
+    switch (widget.config.chartType) {
+
       case EntityHistoryWidgetType.simple: {
+          TheLogger.debug("  Simple selected");
           return SimpleStateHistoryChartWidget(
             rawHistory: _history,
           );
       }
 
-      case EntityHistoryWidgetType.valueToTime: {
+      case EntityHistoryWidgetType.numericState: {
+        TheLogger.debug("  EntityHistory selected");
         return NumericStateHistoryChartWidget(
           rawHistory: _history,
+          config: widget.config,
+        );
+      }
+
+      case EntityHistoryWidgetType.numericAttributes: {
+        TheLogger.debug("  NumericAttributes selected");
+        return CombinedHistoryChartWidget(
+          rawHistory: _history,
+          config: widget.config,
         );
       }
 
       default: {
+        TheLogger.debug("  Simple selected as default");
         return SimpleStateHistoryChartWidget(
           rawHistory: _history,
         );

lib/entity_widgets/history_chart/numeric_state_history_chart.dart

@@ -2,8 +2,9 @@ part of '../../main.dart';
 
 class NumericStateHistoryChartWidget extends StatefulWidget {
   final rawHistory;
+  final EntityHistoryConfig config;
 
-  const NumericStateHistoryChartWidget({Key key, this.rawHistory}) : super(key: key);
+  const NumericStateHistoryChartWidget({Key key, @required this.rawHistory, @required this.config}) : super(key: key);
 
 
   @override
@@ -86,15 +87,15 @@ class _NumericStateHistoryChartWidgetState extends State<NumericStateHistoryChar
     return [
       new charts.Series<NumericEntityStateHistoryMoment, DateTime>(
         id: 'State',
-        colorFn: (NumericEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor("unavailable", historyMoment.id),
+        colorFn: (NumericEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor("on", -1),
         domainFn: (NumericEntityStateHistoryMoment historyMoment, _) => historyMoment.time,
         measureFn: (NumericEntityStateHistoryMoment historyMoment, _) => historyMoment.value,
         data: data,
       ),
       new charts.Series<NumericEntityStateHistoryMoment, DateTime>(
         id: 'State',
-        radiusPxFn: (NumericEntityStateHistoryMoment historyMoment, __) => (historyMoment.id == _selectedId) ? 5.0 : 2.0,
+        radiusPxFn: (NumericEntityStateHistoryMoment historyMoment, __) => (historyMoment.id == _selectedId) ? 5.0 : 1.0,
-        colorFn: (NumericEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor("off", historyMoment.id),
+        colorFn: (NumericEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor("on", -1),
         domainFn: (NumericEntityStateHistoryMoment historyMoment, _) => historyMoment.time,
         measureFn: (NumericEntityStateHistoryMoment historyMoment, _) => historyMoment.value,
         data: data,
@@ -111,7 +112,7 @@ class _NumericStateHistoryChartWidgetState extends State<NumericStateHistoryChar
   }
 
   void _selectNext() {
-    if (_selectedId < (_parsedHistory.first.data.length - 2)) {
+    if (_selectedId < (_parsedHistory.first.data.length - 1)) {
       setState(() {
         _selectedId += 1;
       });

lib/entity_widgets/history_chart/simple_state_history_chart.dart

@@ -39,7 +39,7 @@ class _SimpleStateHistoryChartWidgetState extends State<SimpleStateHistoryChartW
           selectedState: selectedState,
           onPrevTap: () => _selectPrev(),
           onNextTap: () => _selectNext(),
-          colorIndex: _selectedId,
+          colorIndex: _parsedHistory.first.data[_selectedId].colorId,
         ),
         SizedBox(
           height: 70.0,
@@ -68,6 +68,7 @@ class _SimpleStateHistoryChartWidgetState extends State<SimpleStateHistoryChartW
   List<charts.Series<SimpleEntityStateHistoryMoment, DateTime>> _parseHistory() {
     List<SimpleEntityStateHistoryMoment> data = [];
     DateTime now = DateTime.now();
+    Map<String, int> cachedStates = {};
     for (var i = 0; i < widget.rawHistory.length; i++) {
       var stateData = widget.rawHistory[i];
       DateTime startTime = DateTime.tryParse(stateData["last_updated"])?.toLocal();
@@ -77,9 +78,12 @@ class _SimpleStateHistoryChartWidgetState extends State<SimpleStateHistoryChartW
       } else {
         endTime = now;
       }
-      data.add(SimpleEntityStateHistoryMoment(stateData["state"], startTime, endTime, i));
+      if (cachedStates[stateData["state"]] == null) {
+        cachedStates.addAll({"${stateData["state"]}": cachedStates.length});
       }
-    data.add(SimpleEntityStateHistoryMoment(data.last.state, now, null, widget.rawHistory.length));
+      data.add(SimpleEntityStateHistoryMoment(stateData["state"], startTime, endTime, i, cachedStates[stateData["state"]]));
+    }
+    data.add(SimpleEntityStateHistoryMoment(data.last.state, now, null, widget.rawHistory.length, data.last.colorId));
     if (_selectedId == -1) {
       _selectedId = 0;
     }
@@ -87,7 +91,7 @@ class _SimpleStateHistoryChartWidgetState extends State<SimpleStateHistoryChartW
       new charts.Series<SimpleEntityStateHistoryMoment, DateTime>(
         id: 'State',
         strokeWidthPxFn: (SimpleEntityStateHistoryMoment historyMoment, __) => (historyMoment.id == _selectedId) ? 70.0 : 40.0,
-        colorFn: (SimpleEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor(historyMoment.state, historyMoment.id),
+        colorFn: (SimpleEntityStateHistoryMoment historyMoment, __) => EntityColors.chartHistoryStateColor(historyMoment.state, historyMoment.colorId),
         domainFn: (SimpleEntityStateHistoryMoment historyMoment, _) => historyMoment.startTime,
         measureFn: (SimpleEntityStateHistoryMoment historyMoment, _) => 0,
         data: data,
@@ -205,6 +209,7 @@ class SimpleEntityStateHistoryMoment {
   final DateTime endTime;
   final String state;
   final int id;
+  final int colorId;
 
-  SimpleEntityStateHistoryMoment(this.state, this.startTime, this.endTime,  this.id);
+  SimpleEntityStateHistoryMoment(this.state, this.startTime, this.endTime,  this.id, this.colorId);
 }

lib/main.dart

@@ -41,6 +41,7 @@ part 'entity_widgets/entity_page_container.dart';
 part 'entity_widgets/history_chart/entity_history.dart';
 part 'entity_widgets/history_chart/simple_state_history_chart.dart';
 part 'entity_widgets/history_chart/numeric_state_history_chart.dart';
+part 'entity_widgets/history_chart/combined_history_chart.dart';
 part 'entity_widgets/state/switch_state.dart';
 part 'entity_widgets/state/slider_state.dart';
 part 'entity_widgets/state/text_input_state.dart';