Исходный код вики Change notify

Версия 1.1 от Alexandr Fokin на 2024/08/17 13:14
Последние авторы
1 |(% style="width:81px" %) |(% style="width:1356px" %)
2 |(% style="width:81px" %) |(% style="width:1356px" %)(((
3 |{{code language="c#"}}/// <summary>
4 /// Контейнер с INotifyPropertyChanged
5 /// </summary>
6 public class ObservableContainer<T>
7 : INotifyPropertyChanged,
8 IEquatable<ObservableContainer<T>>,
9 IEquatable<T>
10 {
11 #region prop
12
13 private T _data;
14
15 public event PropertyChangedEventHandler PropertyChanged;
16
17 public T Data
18 {
19 get => _data;
20 set
21 {
22 _data = value;
23 PropertyChanged?.Invoke(
24 this,
25 new PropertyChangedEventArgs(nameof(Data))
26 );
27 }
28 }
29
30 #endregion
31
32
33 #region ctor
34
35 public ObservableContainer() { }
36 public ObservableContainer(T data)
37 {
38 _data = data;
39 }
40
41 #endregion
42
43
44 #region override
45
46 public override string ToString()
47 {
48 return _data?.ToString() ?? "null";
49 }
50
51 public override int GetHashCode()
52 {
53 return _data?.GetHashCode() ?? 0;
54 }
55
56 public override bool Equals(object obj)
57 {
58 if (obj is ObservableContainer<T> o1)
59 {
60 return Equals(other: o1);
61 }
62 else if (obj is T o2)
63 {
64 return Equals(other: o2);
65 }
66
67 return false;
68 }
69
70 public bool Equals(ObservableContainer<T> other)
71 {
72 if (other.Data == null && Data == null)
73 {
74 return true;
75 }
76 if (other.Data != null)
77 {
78 other.Data.Equals(Data);
79 }
80 if (Data != null)
81 {
82 Data.Equals(other.Data);
83 }
84
85 return false;
86 }
87
88 public bool Equals(T other)
89 {
90 if (other == null && Data == null)
91 {
92 return true;
93 }
94 if (other != null)
95 {
96 other.Equals(Data);
97 }
98 if (Data != null)
99 {
100 Data.Equals(other);
101 }
102
103 return false;
104 }
105
106 #endregion
107
108 #region operator
109
110 public static implicit operator ObservableContainer<T>(T x)
111 {
112 return new ObservableContainer<T>(x);
113 }
114 public static implicit operator T(ObservableContainer<T> x)
115 {
116 return x.Data;
117 }
118
119 #endregion
120 }{{/code}}
121 |{{code language="c#"}}public class TestModel2
122 {
123 public ObservableContainer<string> Property1 { get; set; }
124 = new ObservableContainer<string>();
125 public ObservableContainer<string> Property2 { get; set; }
126 = new ObservableContainer<string>();
127 }{{/code}}
128 |{{code language="xml"}}<UniformGrid Rows="2" Columns="2">
129 <TextBox Text="Prop1"></TextBox>
130 <TextBox Text="{Binding Path=Property1.Data, Mode=OneWay}"></TextBox>
131 <Button Content="Right Bottom" />
132
133 <TextBox Text="Prop2"></TextBox>
134 <TextBox Text="{Binding Path=Property2.Data, Mode=TwoWay}"></TextBox>
135 <Button Content="Right Bottom" Click="Button_Click" />
136 </UniformGrid>{{/code}}
137 )))
138 |(% style="width:81px" %) |(% style="width:1356px" %)
139
140