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MudCodeInput (#97)
* Initialize * Cleanup * Final Cleanup
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‎CodeBeam.MudExtensions/Components/CodeInput/MudCodeInput.razor‎

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@namespace MudExtensions
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@typeparam T
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@inherits MudFormComponent<T, string>
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<div class="@Classname" style="@Style">
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@for (int i = 0; i < Count; i++)
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{
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int a = i;
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<MudTextField @ref="_elementReferences[a]" T="T" Class="@InputClassname" Style="@(Margin == Margin.Dense ? "width: 32px" : "width: 42px")" MaxLength="1"
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@onkeydown="HandleKeyDown" @onfocus="@(() => CheckFocus(a))" @onblur="SetValue"
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Variant="@Variant" Margin="@Margin" Disabled="Disabled" ReadOnly="ReadOnly" Immediate="true" InputType="InputType" />
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}
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</div>
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<style>
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.justify-text-center input {
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text-align: center;
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}
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.mud-code input {
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padding: 12px 0px !important;
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}
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</style>

‎CodeBeam.MudExtensions/Components/CodeInput/MudCodeInput.razor.cs‎

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using System;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Components;
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using Microsoft.AspNetCore.Components.Web;
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using MudBlazor;
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using MudBlazor.Utilities;
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using MudExtensions.Extensions;
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namespace MudExtensions
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{
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public partial class MudCodeInput<T> : MudFormComponent<T, string>
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{
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public MudCodeInput() : base(new DefaultConverter<T>()) { }
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protected string Classname =>
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new CssBuilder($"d-flex gap-{Spacing}")
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.AddClass(Class)
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.Build();
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protected string InputClassname =>
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new CssBuilder("justify-text-center")
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.AddClass("mud-code", Variant != Variant.Text)
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.AddClass(ClassInput)
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.Build();
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private List<MudTextField<T>> _elementReferences = new();
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/// <summary>
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/// The CSS classes for each input, seperated by space.
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/// </summary>
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public string ClassInput { get; set; }
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/// <summary>
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/// Type of the input element. It should be a valid HTML5 input type.
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/// </summary>
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public InputType InputType { get; set; } = InputType.Text;
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/// <summary>
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/// The value of the input.
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/// </summary>
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private T _theValue;
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public T Value
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{
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get => _theValue;
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set
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{
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if (Converter.Set(_theValue) == Converter.Set(value))
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{
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return;
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}
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_theValue = value;
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SetValueFromOutside(_theValue).AndForgetExt();
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}
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}
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/// <summary>
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/// The event fires when value changed.
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/// </summary>
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public EventCallback<T> ValueChanged { get; set; }
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private int _count;
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/// <summary>
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/// The number of text fields.
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/// </summary>
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public int Count
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{
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get => _count;
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set
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{
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if (value == _count || value < 0)
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{
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return;
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}
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if (12 < value)
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{
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_count = 12;
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}
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else
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{
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_count = value;
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}
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}
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}
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/// <summary>
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/// Determines the spacing between each input.
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/// </summary>
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public int Spacing { get; set; } = 2;
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public bool Disabled { get; set; }
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public bool ReadOnly { get; set; }
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public Variant Variant { get; set; } = Variant.Text;
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[Parameter]
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[Category(CategoryTypes.FormComponent.Behavior)]
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public Margin Margin { get; set; }
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protected async Task HandleKeyDown(KeyboardEventArgs arg)
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{
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if (Disabled || ReadOnly)
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{
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return;
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}
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if (RuntimeLocation.IsClientSide)
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{
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await Task.Delay(10);
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}
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if (arg.Key == "Backspace" || arg.Key == "ArrowLeft")
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{
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await FocusPrevious();
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return;
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}
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if (arg.Key.Length == 1 || arg.Key == "ArrowRight")
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{
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await FocusNext();
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}
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}
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private int _lastFocusedIndex = 0;
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protected void CheckFocus(int count)
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{
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_lastFocusedIndex = count;
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}
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public async Task FocusNext()
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{
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if (_lastFocusedIndex >= Count - 1)
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{
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await _elementReferences[_lastFocusedIndex].BlurAsync();
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await _elementReferences[_lastFocusedIndex].FocusAsync();
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return;
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}
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await _elementReferences[_lastFocusedIndex + 1].FocusAsync();
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}
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public async Task FocusPrevious()
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{
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if (_lastFocusedIndex == 0)
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{
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await _elementReferences[_lastFocusedIndex].BlurAsync();
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await _elementReferences[_lastFocusedIndex].FocusAsync();
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return;
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}
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await _elementReferences[_lastFocusedIndex - 1].FocusAsync();
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}
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protected override void OnInitialized()
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{
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base.OnInitialized();
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SyncReferences();
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}
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private void SyncReferences()
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{
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_elementReferences.Clear();
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for (int i = 0; i < 12; i++)
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{
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_elementReferences.Add(new MudTextField<T>());
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}
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}
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public async Task SetValue()
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{
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string result = "";
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for (int i = 0; i < Count; i++)
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{
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var val = _elementReferences[i].Value?.ToString();
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if (val == null)
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{
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continue;
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}
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result += val;
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}
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Value = Converter.Get(result);
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await ValueChanged.InvokeAsync(Value);
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}
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public async Task SetValueFromOutside(T value)
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{
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string val = Converter.Set(value);
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if (Count < val.Length)
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{
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val = val.Substring(0, Count);
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}
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Value = Converter.Get(val);
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for (int i = 0; i < Count; i++)
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{
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if (i < val.Length)
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{
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await _elementReferences[i].SetText(val[i].ToString());
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}
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else
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{
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await _elementReferences[i].SetText(null);
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}
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}
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await ValueChanged.InvokeAsync(Value);
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StateHasChanged();
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}
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}
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}

‎ComponentViewer.Docs/Pages/Components/ApiPage.razor‎

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</MudTable>
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</ExampleCard>
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<ExampleCard Title="Api - MudCodeInput" HasExpansionPanel="true">
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<MudTable Items="@(typeof(MudCodeInput<string>).GetProperties().Where(x => x.Name != "FieldId" && x.Name != "UserAttributes").OrderBy(x => x.Name).ToList())">
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<HeaderContent>
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<MudTh>Name</MudTh>
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<MudTh>Type</MudTh>
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<MudTh>Default</MudTh>
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</HeaderContent>
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<RowTemplate>
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<MudTd>@context.Name</MudTd>
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<MudTd>@context.PropertyType.Name</MudTd>
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<MudTd>
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@if (true)
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{
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MudCodeInput<string> instance = new();
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<MudText Typo="Typo.body2">@(context.GetValue(instance)?.ToString() ?? "null")</MudText>
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}
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</MudTd>
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</RowTemplate>
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</MudTable>
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</ExampleCard>
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<ExampleCard Title="Api - MudColorProvider" HasExpansionPanel="true">
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<MudTable Items="@(typeof(MudColorProvider).GetProperties().Where(x => x.Name != "FieldId" && x.Name != "UserAttributes").OrderBy(x => x.Name).ToList())">
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<HeaderContent>

‎ComponentViewer.Docs/Pages/Components/CodeInputPage.razor‎

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@page "/mudcodeinput"
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@using ComponentViewer.Docs.Pages.Examples
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<ExamplePage Title="MudCodeInput">
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<ExampleCard ExampleName="CodeInputExample1" Title="Usage" Description="">
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<CodeInputExample1 />
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</ExampleCard>
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</ExamplePage>

‎ComponentViewer.Docs/Pages/Examples/CodeInputExample1.razor‎

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@using Microsoft.AspNetCore.Components
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@using MudBlazor.Extensions
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<MudGrid>
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<MudItem xs="12" sm="8" Class="d-flex flex-column gap-8 align-center justify-center" Style="height: 500px">
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<MudCodeInput @ref="_textFieldGroup" T="string" @bind-Value="@_value" Count="@_count" Spacing="_spacing" Variant="@_variant" Margin="_margin"
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Disabled="@_disabled" ReadOnly="@_readonly" />
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</MudItem>
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<MudItem xs="12" sm="4">
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<MudStack Spacing="4">
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<MudText>Value: @_value</MudText>
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<MudTextField @bind-Value="@_value" Immediate="true" Label="Two Way Bind Controller" />
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<MudNumericField @bind-Value="_count" Label="Count" Variant="Variant.Outlined" />
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<MudNumericField @bind-Value="_spacing" Label="Spacing" Variant="Variant.Outlined" />
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<MudSelect @bind-Value="_variant" Variant="Variant.Outlined" Label="Variant">
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@foreach (var item in Enum.GetValues<Variant>())
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{
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<MudSelectItem Value="item">@item.ToDescriptionString()</MudSelectItem>
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}
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</MudSelect>
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<MudSelect @bind-Value="_margin" Variant="Variant.Outlined" Label="Margin">
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@foreach (var item in Enum.GetValues<Margin>())
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{
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<MudSelectItem Value="item">@item.ToDescriptionString()</MudSelectItem>
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}
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</MudSelect>
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<MudSwitchM3 @bind-Checked="@_disabled" Label="Disabled" Color="Color.Primary" />
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<MudSwitchM3 @bind-Checked="@_readonly" Label="ReadOnly" Color="Color.Primary" />
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</MudStack>
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</MudItem>
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</MudGrid>
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@code{
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MudCodeInput<string> _textFieldGroup;
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string _value;
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int _count = 4;
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int _spacing = 2;
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Variant _variant = Variant.Outlined;
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Margin _margin;
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bool _disabled;
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bool _readonly;
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}

‎ComponentViewer.Docs/Pages/Index.razor‎

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<ComponentCard Title="MudAnimate"
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Description="A revolutionary next generation animate component." />
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</MudItem>
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<MudItem xs="12" sm="6" md="4" lg="3" xl="2">
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<ComponentCard Title="MudCodeInput"
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Description="A group of textfields that each one can contain a char." />
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</MudItem>
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<MudItem xs="12" sm="6" md="4" lg="3" xl="2">
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<ComponentCard Title="MudColorProvider"
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<MudItem xs="12" sm="6" md="4" lg="3" xl="2">
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<ComponentCard Title="MudSwitchM3"
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Description="Material 3 switch component that has all MudBlazor feat" />
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Description="Material 3 switch component that has all MudBlazor features." />
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</MudItem>
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<MudItem xs="12" sm="6" md="4" lg="3" xl="2">

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