Object detector

@* Parent-driven model picker — the component no longer owns one *@
<BptDropdown Items="@modelNames"
             Value="@selectedModelName"
             OnSelectionChanged="OnModelSelected"
             Width="260px" />

@* Reload button cycles imageSrc to a new random picsum seed *@
<BptButton Text="Reload random image"
           Variant="BptButtonVariant.Outlined"
           OnClick="ReloadImage" />

@* The detector owns its own confidence slider + Detect/Clear/Download
   buttons when ShowControls is true (the default). *@
<BptImageObjectDetector Src="@imageSrc"
                        Model="@selectedModel"
                        ConfidenceThreshold="50"
                        MaxDetections="50"
                        ShowControls="true"
                        OnDetectionComplete="HandleDetection"
                        Width="100%" />

@* Optional: render a results table from the OnDetectionComplete callback *@
@if (detections is { Count: > 0 })
{
    <table class="table table-sm">
        <thead>
            <tr><th>#</th><th>Class</th><th>Confidence</th></tr>
        </thead>
        <tbody>
            @{ var i = 0; }
            @foreach (var d in detections)
            {
                i++;
                <tr>
                    <td>@i</td>
                    <td><code>@d.ClassName</code></td>
                    <td>@(d.Confidence.ToString("P1"))</td>
                </tr>
            }
        </tbody>
    </table>
}

@code {
    // ===========================
    // State
    // ===========================
    private int _seedCounter = 1;
    private int confidenceThreshold = 50; // 0-100 percent
    private string imageSrc = "https://picsum.photos/seed/demo_1/800/600";
    private List<DetectionResult>? detections;

    // Model picker — parent owns the list and the current selection
    private readonly List<string> modelNames =
        DetectionModels.All.Select(m => m.Name).ToList();
    private string selectedModelName = DetectionModels.RfDetrLarge2026.Name;
    private DetectionModel selectedModel = DetectionModels.RfDetrLarge2026;

    // ===========================
    // Handlers
    // ===========================
    private void ReloadImage()
    {
        _seedCounter++;
        detections = null;
        imageSrc = $"https://picsum.photos/seed/demo_{_seedCounter}/800/600";
    }

    private void OnModelSelected(string name)
    {
        selectedModelName = name;
        var match = DetectionModels.All.FirstOrDefault(m => m.Name == name);
        if (match is not null)
        {
            selectedModel = match;
            detections = null;
        }
    }

    private void HandleDetection(List<DetectionResult> results)
    {
        detections = results;
        StateHasChanged();
    }
}