using UnityEngine.Events;

namespace AlicizaX.UI
{
    /// <summary>
    /// 滚动控制器接口
    /// 定义滚动行为的基本契约
    /// </summary>
    public interface IScroller
    {
        /// <summary>
        /// 获取或设置当前滚动位置
        /// </summary>
        float Position { get; set; }

        /// <summary>
        /// 滚动到指定位置
        /// </summary>
        /// <param name="position">目标位置</param>
        /// <param name="smooth">是否使用平滑滚动</param>
        void ScrollTo(float position, bool smooth = false);
    }

    /// <summary>
    /// 滚动位置改变事件
    /// </summary>
    public class ScrollerEvent : UnityEvent<float> { }

    /// <summary>
    /// 滚动停止事件
    /// </summary>
    public class MoveStopEvent : UnityEvent { }

    /// <summary>
    /// 拖拽状态改变事件
    /// </summary>
    public class DraggingEvent : UnityEvent<bool> { }
}