WIP high education graduation calculator

lib/view/pages/more/highEduGraduationCalculator/models/subject.dart

@@ -0,0 +1,48 @@
+import 'package:flutter/material.dart';
+import 'package:marianum_mobile/widget/centeredLeading.dart';
+
+enum SubjectState {
+  none,
+  isLk,
+  isGk,
+}
+
+class HighEduGraduationConstants {
+  static const int maxLks = 2;
+  static const int maxGks = 9;
+}
+
+class SubjectCollection {
+  List<Subject> subjects;
+
+  SubjectCollection(this.subjects);
+}
+
+class Subject {
+  String displayName;
+  bool lkApplicable;
+
+  SubjectState _subjectState = SubjectState.none;
+
+  bool isLk() => _subjectState == SubjectState.isLk;
+  bool isGk() => _subjectState == SubjectState.isGk;
+  bool canLk(List<Subject> other) => lkApplicable && other.where((s) => s.isLk()).length < HighEduGraduationConstants.maxLks;
+  bool canGk(List<Subject> other) => !isLk() && other.where((s) => s.isGk()).length < HighEduGraduationConstants.maxGks;
+
+  set unsafeSubjectSet(SubjectState newState) => _subjectState = newState;
+  set unsafeLkToggle(bool isLk) {
+    _subjectState = isLk ? SubjectState.isLk : SubjectState.none;
+  }
+
+  ListTile get asTile => ListTile(
+    leading: const CenteredLeading(Icon(Icons.subject_outlined)),
+    title: Text(displayName),
+    trailing: Checkbox(
+      value: isGk(),
+      onChanged: (e) => {},
+    ),
+  );
+
+
+  Subject({required this.displayName, required this.lkApplicable});
+}