using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media;
using System.Windows;

namespace MultiTerm.Wpf.CustomControl;

public static class UIHelper
{
    /// from https://stackoverflow.com/questions/636383/how-can-i-find-wpf-controls-by-name-or-type
    /// <summary>
    /// Finds a parent of a given item on the visual tree.
    /// </summary>
    /// <typeparam name="T">The type of the queried item.</typeparam>
    /// <param name="child">A direct or indirect child of the queried item.</param>
    /// <returns>The first parent item that matches the submitted type parameter. 
    /// If not matching item can be found, a null reference is being returned.</returns>
    public static T? FindVisualParent<T>(DependencyObject child)
      where T : DependencyObject
    {
        // get parent item
        DependencyObject parentObject = VisualTreeHelper.GetParent(child);

        // we’ve reached the end of the tree
        if (parentObject == null) return null;

        // check if the parent matches the type we’re looking for
        if (parentObject is T parent)
        {
            return parent;
        }
        else
        {
            // use recursion to proceed with next level
            return FindVisualParent<T>(parentObject);
        }
    }
}