mapo-core/MP.Prog/Components/CodArtSelector.razor

@using MP.FileData.DatabaseModels
@using MP.Prog.Data

@inject FileArchDataService DataService
@inject MessageService AppMService

@if (ArtList == null)
{
    <LoadingData></LoadingData>
}
else
{
    <div class="input-group">
        <div class="input-group-prepend">
            <span class="input-group-text">
                <span class="fas fa-search" aria-hidden="true"></span>
            </span>
        </div>
        <input type="text" class="form-control form-control-sm" placeholder="Ricerca Articolo" @bind-value="@SearchArt" />
        <select @bind="@SelCodArt" class="form-control form-control-sm">
            @if (ArtList != null)
            {
                foreach (var item in ArtList)
                {
                    <option value="@item.CodArticolo">@item.Disegno | @item.DescArticolo [@item.CodArticolo]</option>
                }
            }
        </select>
        <div class="input-group-append">
            <button id="searchReset" class="btn btn-sm btn-secondary" @onclick="() => ResetSearchArt()" title="Reset ricerca articolo"><i class="fas fa-ban"></i></button>
        </div>
    </div>
}

@code {

    [Parameter]
    public EventCallback<string> searchUpdated { get; set; }
    [Parameter]
    public string SelCodArt
    {
        get
        {
            string answ = "";
            if (AppMService.File_Filter != null)
            {
                answ = AppMService.File_Filter.CodArticolo;
            }
            return answ;
        }
        set
        {
            if (!AppMService.File_Filter.CodArticolo.Equals(value))
            {
                AppMService.File_Filter.CodArticolo = value;
            }
            reportChange();
        }
    }

    private void reportChange()
    {
        searchUpdated.InvokeAsync(SelCodArt);
    }

    protected string _SearchArt;
    protected string defCodArt = "";
    protected List<ArticoloModel> ArtList;

    protected string SearchArt
    {
        get
        {
            return _SearchArt;
        }
        set
        {
            _SearchArt = value;
            // se son > 3 char... debounce...
            if (string.IsNullOrEmpty(value))
            {
                _SearchArt = defCodArt;
            }
            if (value.Length >= defCodArt.Length)
            {
                var pUpd = Task.Run(async () =>
                {
                    ArtList = await DataService.ArticoliGetFilt(SearchArt);
                });
                pUpd.Wait();
            }
        }
    }
    protected override async Task OnInitializedAsync()
    {
        await ReloadAllData();
        _SearchArt = defCodArt;
    }

    protected async Task ReloadAllData()
    {
        SelCodArt = defCodArt;
        ArtList = await DataService.ArticoliGetFilt(SearchArt);
    }

    protected void ResetSearchArt()
    {
        SearchArt = defCodArt;
    }
}