using System.Windows.Automation;
using System.Windows.Automation.Peers;

namespace WPFluent.Controls;

internal class NavigationViewItemAutomationPeer : FrameworkElementAutomationPeer
{
    private readonly NavigationViewItem _owner;

    public NavigationViewItemAutomationPeer(NavigationViewItem owner) : base(owner) { _owner = owner; }

    protected override AutomationControlType GetAutomationControlTypeCore() { return AutomationControlType.TabItem; }

    protected override string GetClassNameCore() { return "NavigationItem"; }

    protected override AutomationPeer GetLabeledByCore()
    {
        if(_owner.Content is UIElement element)
        {
            return CreatePeerForElement(element);
        }

        return base.GetLabeledByCore();
    }

    protected override string GetNameCore()
    {
        var result = base.GetNameCore() ?? string.Empty;

        if(result == string.Empty)
        {
            result = AutomationProperties.GetName(_owner);
        }

        if(result == string.Empty && _owner.Content is DependencyObject d)
        {
            result = AutomationProperties.GetName(d);
        }

        if(result == string.Empty && _owner.Content is string s)
        {
            result = s;
        }

        return result;
    }

    public override object GetPattern(PatternInterface patternInterface)
    {
        if(patternInterface == PatternInterface.ItemContainer)
        {
            return this;
        }

        return base.GetPattern(patternInterface);
    }
}