web UI

VisionBuilder.UI.Blazor/Components/ErrorPreview.razor.cs

@@ -0,0 +1,59 @@
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using Microsoft.AspNetCore.Components;
+using VisionBuilder.UI.Common.ViewModel;
+using VisionBuilder.UI.Common.ViewModel.Classes;
+
+namespace VisionBuilder.UI.Blazor.Components;
+
+public partial class ErrorPreview : ComponentBase, IDisposable
+{
+    [Parameter] public ErrorsVM? ViewModel { get; set; }
+
+    private List<ErrorData> _errors = new();
+    private ErrorsVM? _subscribedVm;
+
+    protected override void OnParametersSet()
+    {
+        if (_subscribedVm != ViewModel)
+        {
+            Unsubscribe();
+            Subscribe();
+        }
+    }
+
+    private void Subscribe()
+    {
+        _subscribedVm = ViewModel;
+        if (ViewModel != null)
+        {
+            ViewModel.Errors.CollectionChanged += OnCollectionChanged;
+            _errors = new List<ErrorData>(ViewModel.Errors);
+        }
+    }
+
+    private void Unsubscribe()
+    {
+        if (_subscribedVm != null)
+            _subscribedVm.Errors.CollectionChanged -= OnCollectionChanged;
+        _subscribedVm = null;
+    }
+
+    private async void OnCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
+    {
+        if (ViewModel != null)
+            _errors = new List<ErrorData>(ViewModel.Errors);
+        await InvokeAsync(StateHasChanged);
+    }
+
+    private async Task OnErrorClicked(ErrorData errorData)
+    {
+        if (ViewModel != null)
+            await ViewModel.ShowImage(errorData);
+    }
+
+    public void Dispose()
+    {
+        Unsubscribe();
+    }
+}