Sharepoint-Toolbox/SharepointToolbox/Views/Tabs/UserAccessAuditView.xaml.cs

using System.Collections.Specialized;
using System.Windows;
using System.Windows.Controls;
using SharepointToolbox.ViewModels.Tabs;

namespace SharepointToolbox.Views.Tabs;

public partial class UserAccessAuditView : UserControl
{
    public UserAccessAuditView(UserAccessAuditViewModel viewModel)
    {
        InitializeComponent();
        DataContext = viewModel;

        // Show/hide the autocomplete list as SearchResults changes
        viewModel.SearchResults.CollectionChanged += OnSearchResultsChanged;
    }

    private void OnSearchResultsChanged(object? sender, NotifyCollectionChangedEventArgs e)
    {
        if (DataContext is UserAccessAuditViewModel vm)
        {
            SearchResultsList.Visibility = vm.SearchResults.Count > 0
                ? Visibility.Visible
                : Visibility.Collapsed;
        }
    }

    /// <summary>
    /// Handles click on a search result item in the autocomplete list.
    /// Invokes AddUserCommand on the ViewModel and hides the list.
    /// </summary>
    private void OnSearchResultClicked(object sender, System.Windows.Input.MouseButtonEventArgs e)
    {
        if (sender is ListBoxItem item && DataContext is UserAccessAuditViewModel vm)
        {
            vm.AddUserCommand.Execute(item.DataContext);
            // AddUserCommand clears SearchResults so CollectionChanged will hide the list
        }
    }
}