// ReSharper disable once CheckNamespace
namespace WPFluent.Controls;

/// <content>
/// Defines attached properties for <see cref="NavigationView"/>.
/// </content>
public partial class NavigationView
{
    // ====
    // NavigationParent Attached Property
    // ====

    /// <summary>
    /// Identifies the <see cref="NavigationParent"/> dependency property.
    /// </summary>
    internal static readonly DependencyProperty NavigationParentProperty =
        DependencyProperty.RegisterAttached(
        nameof(NavigationParent),
        typeof(NavigationView),
        typeof(NavigationView),
        new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.Inherits));
    // ====
    // HeaderContent Attached Property
    // ====

    /// <summary>
    /// Registers attached property NavigationView.HeaderContent
    /// </summary>
    public static readonly DependencyProperty HeaderContentProperty = DependencyProperty.RegisterAttached(
        "HeaderContent",
        typeof(object),
        typeof(NavigationView),
        new FrameworkPropertyMetadata(null));

    /// <summary>
    /// Helper for getting <see cref="NavigationParentProperty"/> from <paramref name="navigationItem"/>.
    /// </summary>
    /// <param name="navigationItem"><see cref="DependencyObject"/> to read <see cref="NavigationParentProperty"/> from.</param>
    /// <returns>NavigationParent property value.</returns>
    [AttachedPropertyBrowsableForType(typeof(DependencyObject))]
    internal static NavigationView? GetNavigationParent(DependencyObject navigationItem) => navigationItem.GetValue(
        NavigationParentProperty) as NavigationView;

    /// <summary>
    /// Gets the parent <see cref="NavigationView"/> for its <see cref="INavigationViewItem"/> children.
    /// </summary>
    internal NavigationView? NavigationParent
    {
        get => (NavigationView?)GetValue(NavigationParentProperty);
        private set => SetValue(NavigationParentProperty, value);
    }

    /// <summary>
    /// Helper for getting <see cref="HeaderContentProperty"/> from <paramref name="target"/>.
    /// </summary>
    /// <param name="target"><see cref="FrameworkElement"/> to read <see cref="HeaderContentProperty"/> from.</param>
    /// <returns>HeaderContent property value.</returns>
    [AttachedPropertyBrowsableForType(typeof(FrameworkElement))]
    public static object? GetHeaderContent(FrameworkElement target) => target.GetValue(HeaderContentProperty);

    /// <summary>
    /// Helper for setting <see cref="HeaderContentProperty"/> on <paramref name="target"/>.
    /// </summary>
    /// <param name="target"><see cref="FrameworkElement"/> to set <see cref="HeaderContentProperty"/> on.</param>
    /// <param name="headerContent">HeaderContent property value.</param>
    public static void SetHeaderContent(FrameworkElement target, object? headerContent) => target.SetValue(
        HeaderContentProperty,
        headerContent);
}