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Fix a bug where the collections MapElements cannot be manipulated fro… #113
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // 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 more information. | ||
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| using System; | ||
| using System.Collections; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
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| namespace Microsoft.Toolkit.Win32.UI.Controls.Interop.WinRT | ||
| { | ||
| internal sealed class WindowsRuntimeCollection<T1, T2> : IList<T1> | ||
| { | ||
| private readonly IList<T2> collection; | ||
| private readonly Func<T2, T1> converter1; | ||
| private readonly Func<T1, T2> converter2; | ||
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| public WindowsRuntimeCollection(IList<T2> collection, Func<T2, T1> converter1, Func<T1, T2> converter2) | ||
| { | ||
| this.collection = collection; | ||
| this.converter1 = converter1; | ||
| this.converter2 = converter2; | ||
| } | ||
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| T1 IList<T1>.this[int index] | ||
| { | ||
| get => this.converter1(this.collection[index]); | ||
| set => this.collection[index] = this.converter2(value); | ||
| } | ||
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| int ICollection<T1>.Count => this.collection.Count; | ||
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| bool ICollection<T1>.IsReadOnly => this.collection.IsReadOnly; | ||
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| void ICollection<T1>.Add(T1 item) | ||
| { | ||
| this.collection.Add(this.converter2(item)); | ||
| } | ||
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| void ICollection<T1>.Clear() | ||
| { | ||
| this.collection.Clear(); | ||
| } | ||
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| bool ICollection<T1>.Contains(T1 item) | ||
| { | ||
| return this.collection.Contains(this.converter2(item)); | ||
| } | ||
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| void ICollection<T1>.CopyTo(T1[] array, int arrayIndex) | ||
| { | ||
| this.collection.CopyTo(array.Select(e => this.converter2(e)).ToArray(), arrayIndex); | ||
| } | ||
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| IEnumerator<T1> IEnumerable<T1>.GetEnumerator() | ||
| { | ||
| foreach (var e in this.collection) | ||
| { | ||
| yield return this.converter1(e); | ||
| } | ||
| } | ||
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| IEnumerator IEnumerable.GetEnumerator() | ||
| { | ||
| foreach (var e in this.collection) | ||
| { | ||
| yield return this.converter1(e); | ||
| } | ||
| } | ||
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| int IList<T1>.IndexOf(T1 item) | ||
| { | ||
| return this.collection.IndexOf(this.converter2(item)); | ||
| } | ||
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| void IList<T1>.Insert(int index, T1 item) | ||
| { | ||
| this.collection.Insert(index, this.converter2(item)); | ||
| } | ||
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| bool ICollection<T1>.Remove(T1 item) | ||
| { | ||
| return this.collection.Remove(this.converter2(item)); | ||
| } | ||
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| void IList<T1>.RemoveAt(int index) | ||
| { | ||
| this.collection.RemoveAt(index); | ||
| } | ||
| } | ||
| } | ||
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