#if UNITY_2019_4_OR_NEWER
using com.zibra.liquid.Foundation.Editor;
using JetBrains.Annotations;
using UnityEngine.UIElements;

namespace com.zibra.liquid.Foundation.UIElements
{
    /// <summary>
    /// A selectable label field.
    /// The same feature as we use to have with IMGUI
    /// <see href="https://docs.unity3d.com/ScriptReference/EditorGUILayout.SelectableLabel.html"/>
    /// </summary>
    internal class SelectableLabel : Label
    {
        /// <exclude/>
        [UsedImplicitly]
        public new class UxmlFactory : UxmlFactory<SelectableLabel, UxmlTraits>
        {
        }

        /// <exclude/>
        public new class UxmlTraits : Label.UxmlTraits {}

                                      /// <summary>
                                      /// The text associated with the element.
                                      /// </summary>
                                      public override string text { get => TextField.value;
        set => TextField.value = value;
    }

    /// <summary>
    /// SelectableLabel Uss class name.
    /// </summary>
    public const string USSClassName = "zibraai-selectable-label";

    /// <summary>
    /// SelectableLabel input Uss class name.
    /// </summary>
    public const string InputUSSClassName = "zibraai-selectable-label__input";

    TextField m_TextField;

    TextField TextField
    {
        get {
            if (m_TextField == null)
            {
                m_TextField = new TextField { isReadOnly = true };
                m_TextField.Q("unity-text-input").AddToClassList(InputUSSClassName);
                Add(m_TextField);
            }

            return m_TextField;
        }
    }

    /// <summary>
    /// Creates new settings block.
    /// </summary>
    public SelectableLabel()
    {
        AddToClassList(USSClassName);
        UIToolkitEditorUtility.ApplyStyleForInternalControl(this);
    }
}
}
#endif