88 lines
1.7 KiB
C#
88 lines
1.7 KiB
C#
using System;
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using R3;
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using System.Linq;
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using ObservableCollections;
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var list = new ObservableList<int>();
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list.ObserveAdd()
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.Subscribe(x =>
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{
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Console.WriteLine(x);
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});
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list.Add(10);
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list.Add(20);
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list.AddRange(new[] { 10, 20, 30 });
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var models = new ObservableList<int>(Enumerable.Range(0, 10));
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var viewModels = models.CreateView(x => new ViewModel
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{
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Id = x,
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Value = "@" + x
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});
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viewModels.AttachFilter(new HogeFilter(), true);
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models.Add(100);
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foreach (var (x, xs) in viewModels)
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{
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System.Console.WriteLine(xs.Value);
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}
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class ViewModel
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{
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public int Id { get; set; }
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public string Value { get; set; } = default!;
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}
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class HogeFilter : ISynchronizedViewFilter<int, ViewModel>
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{
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public bool IsMatch(int value, ViewModel view)
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{
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return value % 2 == 0;
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}
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public void WhenTrue(int value, ViewModel view)
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{
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view.Value = $"@{value} (even)";
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}
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public void WhenFalse(int value, ViewModel view)
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{
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view.Value = $"@{value} (odd)";
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}
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public void OnCollectionChanged(
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ChangedKind changedKind,
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int value,
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ViewModel view,
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in NotifyCollectionChangedEventArgs<int> eventArgs)
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{
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switch (changedKind)
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{
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case ChangedKind.Add:
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view.Value += " Add";
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break;
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case ChangedKind.Remove:
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view.Value += " Remove";
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break;
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case ChangedKind.Move:
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view.Value += $" Move {eventArgs.OldStartingIndex} {eventArgs.NewStartingIndex}";
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break;
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default:
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throw new ArgumentOutOfRangeException(nameof(changedKind), changedKind, null);
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}
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}
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} |