Remotely/Server/Components/LoadingSignal.razor

@inject IClientAppState AppState

<div class="signal-background">
    <div class="signal-wrapper text-center">
        @if (!string.IsNullOrEmpty(StatusMessage))
        {
            <h4>
                @StatusMessage
            </h4>
        }
        <div class="signal @(GetSignalClass())"></div>
    </div>
</div>

@code {
    private Theme _theme;

    [Parameter]
    public string StatusMessage { get; set; } = string.Empty;

    protected override async Task OnInitializedAsync()
    {
        _theme = await AppState.GetEffectiveTheme();
        await base.OnInitializedAsync();
    }

    private string GetSignalClass()
    {
        return _theme == Theme.Dark ? "signal-dark" : "signal-light";
    }
}