namespace Fluent.Automation.Peers
{
    using System.Collections.Generic;
    using System.Windows.Automation.Peers;
    using System.Windows.Controls;

    /// <summary>
    /// <see cref="AutomationPeer"/> for <see cref="TwoLineLabel"/>.
    /// </summary>
    public class TwoLineLabelAutomationPeer : FrameworkElementAutomationPeer
    {
        /// <summary>
        /// Constructor.
        /// </summary>
        /// <param name="owner">Owner of the AutomationPeer.</param>
        public TwoLineLabelAutomationPeer(TwoLineLabel owner)
            : base(owner)
        {
        }

        /// <summary>
        /// <see cref="AutomationPeer.GetChildrenCore"/>
        /// </summary>
        protected override List<AutomationPeer> GetChildrenCore()
        {
            return null;
        }

        /// <summary>
        /// <see cref="AutomationPeer.GetAutomationControlTypeCore"/>
        /// </summary>
        protected override AutomationControlType GetAutomationControlTypeCore()
        {
            return AutomationControlType.Text;
        }

        /// <summary>
        /// <see cref="AutomationPeer.GetClassNameCore"/>
        /// </summary>
        /// <returns></returns>
        protected override string GetClassNameCore()
        {
            return "TwoLineLabel";
        }

        /// <inheritdoc />
        protected override string GetNameCore()
        {
            return ((TwoLineLabel)this.Owner).Text;
        }

        /// <summary>
        /// <see cref="AutomationPeer.IsControlElementCore"/>
        /// </summary>
        protected override bool IsControlElementCore()
        {
            // Return false if TwoLineLabel is part of a ControlTemplate, otherwise return the base method
            var tb = (TwoLineLabel)this.Owner;
            var templatedParent = tb.TemplatedParent;

            // If the templatedParent is a ContentPresenter, this TextBlock is generated from a DataTemplate
            if (templatedParent is null
                || templatedParent is ContentPresenter)
            {
                return base.IsControlElementCore();
            }

            return false;
        }
    }
}