SelectTest1.razor

@namespace MudExtensions.UnitTests.TestComponents
<MudPopoverProvider></MudPopoverProvider>

<MudSelectExtended T="string" @bind-Value="value" PopoverClass="select-popover-class" Disabled="@Disabled" onfocus="Focused" OnBlur="Blurred">
    <MudSelectItemExtended Value="@("1")"/>
    <MudSelectItemExtended Value="@("2")"/>
    <MudSelectItemExtended Value="@("3")"/>
    <MudSelectItemExtended Value="@("4")" Disabled="true"/>
</MudSelectExtended>

<MudSwitch @bind-Value="@_focused" />

@code {
    public static string __description__ = "Click should open the Menu and selecting a value should update the bindable value.";

    [Parameter]
    public bool Disabled { get; set; }

    string? value = null;
    bool _focused = false;

    private void Focused()
    {
        _focused = true;
    }

    private void Blurred()
    {
        _focused = false;
    }
}