-
-
Notifications
You must be signed in to change notification settings - Fork 1.1k
/
ReactivePreferenceFragment.cs
161 lines (138 loc) · 5.73 KB
/
ReactivePreferenceFragment.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
// Copyright (c) 2019 .NET Foundation and Contributors. All rights reserved.
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for full license information.
using System;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Reactive;
using System.Reactive.Linq;
using System.Reactive.Subjects;
using Android.Preferences;
using Android.Runtime;
namespace ReactiveUI
{
/// <summary>
/// This is a PreferenceFragment that is both an Activity and has ReactiveObject powers
/// (i.e. you can call RaiseAndSetIfChanged).
/// </summary>
/// <typeparam name="TViewModel">The view model type.</typeparam>
[SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:FileMayOnlyContainASingleType", Justification = "Classes with the same class names within.")]
public class ReactivePreferenceFragment<TViewModel> : ReactivePreferenceFragment, IViewFor<TViewModel>, ICanActivate
where TViewModel : class
{
private TViewModel _viewModel;
/// <summary>
/// Initializes a new instance of the <see cref="ReactivePreferenceFragment{TViewModel}"/> class.
/// </summary>
protected ReactivePreferenceFragment()
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactivePreferenceFragment{TViewModel}"/> class.
/// </summary>
/// <param name="handle">The handle.</param>
/// <param name="ownership">The ownership.</param>
protected ReactivePreferenceFragment(IntPtr handle, JniHandleOwnership ownership)
: base(handle, ownership)
{
}
/// <inheritdoc/>
public TViewModel ViewModel
{
get => _viewModel;
set => this.RaiseAndSetIfChanged(ref _viewModel, value);
}
/// <inheritdoc/>
object IViewFor.ViewModel
{
get => _viewModel;
set => _viewModel = (TViewModel)value;
}
}
/// <summary>
/// This is a PreferenceFragment that is both an Activity and has ReactiveObject powers
/// (i.e. you can call RaiseAndSetIfChanged).
/// </summary>
[SuppressMessage("StyleCop.CSharp.MaintainabilityRules", "SA1402:FileMayOnlyContainASingleType", Justification = "Classes with the same class names within.")]
public class ReactivePreferenceFragment : PreferenceFragment, IReactiveNotifyPropertyChanged<ReactivePreferenceFragment>, IReactiveObject, IHandleObservableErrors
{
private readonly Subject<Unit> _activated = new Subject<Unit>();
private readonly Subject<Unit> _deactivated = new Subject<Unit>();
/// <summary>
/// Initializes a new instance of the <see cref="ReactivePreferenceFragment"/> class.
/// </summary>
protected ReactivePreferenceFragment()
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactivePreferenceFragment"/> class.
/// </summary>
/// <param name="handle">The handle.</param>
/// <param name="ownership">The ownership.</param>
protected ReactivePreferenceFragment(IntPtr handle, JniHandleOwnership ownership)
: base(handle, ownership)
{
}
/// <inheritdoc/>
public event PropertyChangingEventHandler PropertyChanging
{
add => PropertyChangingEventManager.AddHandler(this, value);
remove => PropertyChangingEventManager.RemoveHandler(this, value);
}
/// <inheritdoc/>
public event PropertyChangedEventHandler PropertyChanged
{
add => PropertyChangedEventManager.AddHandler(this, value);
remove => PropertyChangedEventManager.RemoveHandler(this, value);
}
/// <inheritdoc />
public IObservable<IReactivePropertyChangedEventArgs<ReactivePreferenceFragment>> Changing => this.GetChangingObservable();
/// <inheritdoc />
public IObservable<IReactivePropertyChangedEventArgs<ReactivePreferenceFragment>> Changed => this.GetChangedObservable();
/// <inheritdoc/>
public IObservable<Exception> ThrownExceptions => this.GetThrownExceptionsObservable();
/// <summary>
/// Gets a signal when the fragment is activated.
/// </summary>
public IObservable<Unit> Activated => _activated.AsObservable();
/// <summary>
/// Gets a signal when the fragment is deactivated.
/// </summary>
public IObservable<Unit> Deactivated => _deactivated.AsObservable();
/// <inheritdoc/>
public IDisposable SuppressChangeNotifications() => IReactiveObjectExtensions.SuppressChangeNotifications(this);
/// <inheritdoc/>
void IReactiveObject.RaisePropertyChanged(PropertyChangedEventArgs args)
{
PropertyChangedEventManager.DeliverEvent(this, args);
}
/// <inheritdoc/>
void IReactiveObject.RaisePropertyChanging(PropertyChangingEventArgs args)
{
PropertyChangingEventManager.DeliverEvent(this, args);
}
/// <inheritdoc/>
public override void OnPause()
{
base.OnPause();
_deactivated.OnNext(Unit.Default);
}
/// <inheritdoc/>
public override void OnResume()
{
base.OnResume();
_activated.OnNext(Unit.Default);
}
/// <inheritdoc/>
protected override void Dispose(bool disposing)
{
if (disposing)
{
_activated?.Dispose();
_deactivated?.Dispose();
}
base.Dispose(disposing);
}
}
}