@if (this.pendingSearch)
{
}
@code {
private static readonly TimeSpan DebounceDelay = TimeSpan.FromSeconds(1);
[Parameter]
public string Style { get; set; } = string.Empty;
[Parameter]
public string Placeholder { get; set; } = string.Empty;
[Parameter]
public string SearchTerm { get; set; } = string.Empty;
[Parameter]
public required Action OnSearch { get; set; }
[Parameter]
public bool Spellcheck { get; set; } = false;
[Parameter]
public bool AutoComplete { get; set; } = false;
private bool pendingSearch;
private DateTime debounceSearchTime = DateTime.MinValue;
private Task? pendingSearchTask;
private void SearchTermChanged(ChangeEventArgs args)
{
this.pendingSearchTask ??= Task.Run(() => this.PerformPendingSearch());
this.SearchTerm = args.Value?.ToString() ?? string.Empty;
this.debounceSearchTime = DateTime.Now + DebounceDelay;
}
private async Task PerformPendingSearch()
{
this.pendingSearch = true;
await this.InvokeAsync(this.StateHasChanged);
while ((this.debounceSearchTime - DateTime.Now) is TimeSpan remainingTime &&
remainingTime > TimeSpan.Zero)
{
await Task.Delay(remainingTime);
}
this.OnSearch(this.SearchTerm);
this.pendingSearch = false;
await this.InvokeAsync(this.StateHasChanged);
this.pendingSearchTask = null;
}
}