ant-design-blazor/components/select/internal/SelectSuffixIcon.razor.cs

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C#
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using System;
using System.Text.Json;
using System.Threading.Tasks;
using AntDesign.JsInterop;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
namespace AntDesign.Select.Internal
{
public partial class SelectSuffixIcon<TItemValue, TItem>
{
[Parameter] public bool IsOverlayShow { get; set; }
/// <summary>
/// Whether show search input in single mode.
/// </summary>
[Parameter]
public bool ShowSearchIcon { get; set; }
[Parameter]
public bool ShowArrowIcon { get; set; }
[Parameter]
public EventCallback<MouseEventArgs> OnClearClick { get; set; }
[CascadingParameter(Name = "ParentSelect")] internal SelectBase<TItemValue, TItem> ParentSelect { get; set; }
[Inject] private IDomEventListener DomEventListener { get; set; }
private string _id = "";
private ElementReference _clearRef;
protected override Task OnAfterRenderAsync(bool firstRender)
{
if (firstRender)
{
_id = _clearRef.Id;
if (!ParentSelect.Disabled && ParentSelect.AllowClear && ParentSelect.HasValue)
{
DomEventListener.AddExclusive<JsonElement>(_clearRef, "click", OnClear, true, true);
}
}
if (_clearRef.Id != _id)
{
_id = _clearRef.Id;
if (!ParentSelect.Disabled && ParentSelect.AllowClear && ParentSelect.HasValue)
{
DomEventListener.AddExclusive<JsonElement>(_clearRef, "click", OnClear, true, true);
}
}
return base.OnAfterRenderAsync(firstRender);
}
private async void OnClear(JsonElement jsonElement)
{
if (OnClearClick.HasDelegate)
{
await OnClearClick.InvokeAsync(null);
}
}
}
}