Preserve state between page changes

Add more interactive widgets

1 files changed, 68 insertions, 0 deletions

diff --git a/lib/homescreen_model.dart b/lib/homescreen_model.dart
new file mode 100644
index 0000000..7c1a26f
--- /dev/null
+++ b/lib/homescreen_model.dart
@@ -0,0 +1,68 @@
+import 'dart:collection';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+enum SwitchId {
+  hvacLeftSeat,
+  hvacRigthSeat,
+  hvacAc,
+  hvacAuto,
+  hvacCirculation,
+  hvacFan,
+  hvacAirDown,
+  hvacAirUp,
+  hvacFront,
+  hvacRear,
+}
+
+enum TemperatureId { leftSeat, rightSeat }
+
+class HomescreenModel extends ChangeNotifier {
+  // HVAC page
+
+  // fan speed
+  double _fanSpeed = 20;
+
+  double get fanSpeed => _fanSpeed;
+
+  set fanSpeed(double newhvacFanSpeed) {
+    _fanSpeed = newhvacFanSpeed;
+    notifyListeners();
+  }
+
+  // switch buttons
+  HashMap _switches = new HashMap<SwitchId, bool>();
+
+  bool getSwitchState(SwitchId id) => _switches[id] ?? false;
+
+  void setSwitchState(SwitchId id, bool newValue) {
+    _switches[id] = newValue;
+    notifyListeners();
+  }
+
+  void flipSwitch(SwitchId id) {
+    _switches[id] = !_switches[id];
+    notifyListeners();
+  }
+
+  // temperatures
+  HashMap _temperatures = new HashMap<TemperatureId, int>();
+
+  int getTemperature(TemperatureId id) => _temperatures[id] ?? 22;
+
+  void setTemperature(TemperatureId id, int newTemp) {
+    _temperatures[id] = newTemp;
+    notifyListeners();
+  }
+
+  HomescreenModel() {
+    // initialize the values
+    for (var id in SwitchId.values) {
+      _switches[id] = false;
+    }
+    for (var id in TemperatureId.values) {
+      _temperatures[id] = 22;
+    }
+  }
+}