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ReactiveTableViewController.cs
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ReactiveTableViewController.cs
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// 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 Foundation;
using NSTableViewController = UIKit.UITableViewController;
using NSTableViewStyle = UIKit.UITableViewStyle;
namespace ReactiveUI
{
/// <summary>
/// This is a NSTableViewController that is both an NSTableViewController 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.")]
[SuppressMessage("Design", "CA1010: Implement generic IEnumerable", Justification = "UI Kit exposes IEnumerable")]
public abstract class ReactiveTableViewController : NSTableViewController, IReactiveNotifyPropertyChanged<ReactiveTableViewController>, IHandleObservableErrors, IReactiveObject, ICanActivate
{
private Subject<Unit> _activated = new Subject<Unit>();
private Subject<Unit> _deactivated = new Subject<Unit>();
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController"/> class.
/// </summary>
/// <param name="withStyle">The table view style.</param>
protected ReactiveTableViewController(NSTableViewStyle withStyle)
: base(withStyle)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController"/> class.
/// </summary>
/// <param name="nibName">The name.</param>
/// <param name="bundle">The bundle.</param>
protected ReactiveTableViewController(string nibName, NSBundle bundle)
: base(nibName, bundle)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController"/> class.
/// </summary>
/// <param name="handle">The pointer.</param>
protected ReactiveTableViewController(IntPtr handle)
: base(handle)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController"/> class.
/// </summary>
/// <param name="t">The object flag.</param>
protected ReactiveTableViewController(NSObjectFlag t)
: base(t)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController"/> class.
/// </summary>
/// <param name="coder">The coder.</param>
protected ReactiveTableViewController(NSCoder coder)
: base(coder)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController"/> class.
/// </summary>
protected ReactiveTableViewController()
{
}
/// <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<ReactiveTableViewController>> Changing => this.GetChangingObservable();
/// <inheritdoc />
public IObservable<IReactivePropertyChangedEventArgs<ReactiveTableViewController>> Changed => this.GetChangedObservable();
/// <inheritdoc/>
public IObservable<Exception> ThrownExceptions => this.GetThrownExceptionsObservable();
/// <inheritdoc/>
public IObservable<Unit> Activated => _activated.AsObservable();
/// <inheritdoc/>
public IObservable<Unit> Deactivated => _deactivated.AsObservable();
/// <summary>
/// When this method is called, an object will not fire change
/// notifications (neither traditional nor Observable notifications)
/// until the return value is disposed.
/// </summary>
/// <returns>An object that, when disposed, reenables change
/// notifications.</returns>
public IDisposable SuppressChangeNotifications()
{
return IReactiveObjectExtensions.SuppressChangeNotifications(this);
}
/// <inheritdoc/>
public override void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
_activated.OnNext(Unit.Default);
this.ActivateSubviews(true);
}
/// <inheritdoc/>
public override void ViewDidDisappear(bool animated)
{
base.ViewDidDisappear(animated);
_deactivated.OnNext(Unit.Default);
this.ActivateSubviews(false);
}
/// <inheritdoc/>
void IReactiveObject.RaisePropertyChanging(PropertyChangingEventArgs args)
{
PropertyChangingEventManager.DeliverEvent(this, args);
}
/// <inheritdoc/>
void IReactiveObject.RaisePropertyChanged(PropertyChangedEventArgs args)
{
PropertyChangedEventManager.DeliverEvent(this, args);
}
/// <inheritdoc/>
protected override void Dispose(bool disposing)
{
if (disposing)
{
_activated?.Dispose();
_deactivated?.Dispose();
}
base.Dispose(disposing);
}
}
/// <summary>
/// This is a NSTableViewController that is both an NSTableViewController 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.")]
[SuppressMessage("Design", "CA1010: Implement generic IEnumerable", Justification = "UI Kit exposes IEnumerable")]
public abstract class ReactiveTableViewController<TViewModel> : ReactiveTableViewController, IViewFor<TViewModel>
where TViewModel : class
{
private TViewModel _viewModel;
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController{TViewModel}"/> class.
/// </summary>
/// <param name="withStyle">The table view style.</param>
protected ReactiveTableViewController(NSTableViewStyle withStyle)
: base(withStyle)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController{TViewModel}"/> class.
/// </summary>
/// <param name="nibName">The name.</param>
/// <param name="bundle">The bundle.</param>
protected ReactiveTableViewController(string nibName, NSBundle bundle)
: base(nibName, bundle)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController{TViewModel}"/> class.
/// </summary>
/// <param name="handle">The pointer.</param>
protected ReactiveTableViewController(IntPtr handle)
: base(handle)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController{TViewModel}"/> class.
/// </summary>
/// <param name="t">The object flag.</param>
protected ReactiveTableViewController(NSObjectFlag t)
: base(t)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController{TViewModel}"/> class.
/// </summary>
/// <param name="coder">The coder.</param>
protected ReactiveTableViewController(NSCoder coder)
: base(coder)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ReactiveTableViewController{TViewModel}"/> class.
/// </summary>
protected ReactiveTableViewController()
{
}
/// <inheritdoc/>
public TViewModel ViewModel
{
get => _viewModel;
set => this.RaiseAndSetIfChanged(ref _viewModel, value);
}
/// <inheritdoc/>
object IViewFor.ViewModel
{
get => ViewModel;
set => ViewModel = (TViewModel)value;
}
}
}