| | | 1 | | using System; |
| | | 2 | | using System.Collections.Generic; |
| | | 3 | | |
| | | 4 | | public delegate void Change<T>(T current, T previous); |
| | | 5 | | |
| | | 6 | | public delegate void ChangeWithSenderInfo<T>(BaseVariable<T> sender, T current, T previous); |
| | | 7 | | |
| | | 8 | | public class BaseVariable<T> : IBaseVariable<T>, IEquatable<T> |
| | | 9 | | { |
| | | 10 | | protected T value; |
| | | 11 | | |
| | 0 | 12 | | public BaseVariable() => value = default; |
| | 0 | 13 | | public BaseVariable(T defaultValue) => value = defaultValue; |
| | | 14 | | |
| | | 15 | | public event Change<T> OnChange; |
| | | 16 | | |
| | 6 | 17 | | public T Get() => value; |
| | | 18 | | |
| | | 19 | | public void Set(T newValue) => |
| | 35142 | 20 | | Set(newValue, !Equals(newValue)); |
| | | 21 | | |
| | | 22 | | public virtual bool Equals(T other) => |
| | 35132 | 23 | | EqualityComparer<T>.Default.Equals(value, other); |
| | | 24 | | |
| | | 25 | | public event ChangeWithSenderInfo<T> OnChangeWithSenderInfo; |
| | | 26 | | |
| | | 27 | | public void Set(T newValue, bool notifyEvent) |
| | | 28 | | { |
| | 35307 | 29 | | var previous = value; |
| | 35307 | 30 | | value = newValue; |
| | | 31 | | |
| | 35307 | 32 | | if (notifyEvent) |
| | | 33 | | { |
| | 18745 | 34 | | OnChange?.Invoke(value, previous); |
| | 18745 | 35 | | OnChangeWithSenderInfo?.Invoke(this, value, previous); |
| | | 36 | | } |
| | 16579 | 37 | | } |
| | | 38 | | |
| | | 39 | | public int OnChangeListenersCount() => |
| | 2 | 40 | | OnChange == null ? 0 : OnChange.GetInvocationList().Length; |
| | | 41 | | } |