namespace Yw.WinFrmUI
{
    /// <summary>
    /// 步骤页面接口
    /// </summary>
    public interface IWizardPageAsync<T> where T : class, new()
    {
        #region 事件

        /// <summary>
        /// 页面状态改变事件
        /// </summary>
        event Action PageStateChangedEvent;

        #endregion

        #region 初始化

        /// <summary>
        /// 初始化
        /// </summary>
        void InitialPage(T t);

        #endregion 

        #region 允许属性

        /// <summary>
        /// 允许上一步
        /// </summary>
        bool AllowPrev { get; }

        /// <summary>
        /// 允许下一步
        /// </summary>
        bool AllowNext { get; }

        /// <summary>
        /// 允许取消
        /// </summary>
        bool AllowCancel { get; }

        /// <summary>
        /// 允许完成
        /// </summary>
        bool AllowComplete { get; }

        #endregion 

        #region 判断方法

        /// <summary>
        /// 能否上一步
        /// </summary>
        Task<bool> CanPrev();

        /// <summary>
        /// 能否下一步
        /// </summary>
        Task<bool> CanNext();

        /// <summary>
        /// 能否取消
        /// </summary>
        Task<bool> CanCancel();

        /// <summary>
        /// 能否完成
        /// </summary>
        Task<bool> CanComplete();

        #endregion
    }
}