namespace HStation.WinFrmUI
{
    public partial class CreateXhsSchemeGeneralWizardPage : DevExpress.XtraEditors.XtraUserControl, IWizardPageAsync<CreateXhsSchemeViewModel>
    {
        public CreateXhsSchemeGeneralWizardPage()
        {
            InitializeComponent();
            this.layoutControl1.SetupLayoutControl();
        }

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

        private CreateXhsSchemeViewModel _vm = null;//操作对象
        private bool _isCompleted = false;//是否创建完成
        private bool _createResult = false;//创建结果


        //绘制视图
        private class DrawItemViewModel
        {
            /// <summary>
            /// 文本
            /// </summary>
            public string Text { get; set; }

            /// <summary>
            /// 颜色
            /// </summary>
            public Color Color { get; set; }

            /// <summary>
            /// 
            /// </summary>
            /// <returns></returns>
            public override string ToString()
            {
                return string.Empty;
            }
        }

        /// <summary>
        /// 初始化页面
        /// </summary>
        public async void InitialPage(CreateXhsSchemeViewModel vm)
        {
            if (vm == null)
            {
                return;
            }
            _vm = vm;
            _isCompleted = false;
            _createResult = false;
            this.listBoxControl1.Items.Clear();
            _createResult = await CreateXhsSchemeHelper.Create(vm, (msg, color) =>
             {
                 var drawItem = new DrawItemViewModel
                 {
                     Text = msg,
                     Color = color
                 };
                 this.listBoxControl1.Items.Add(drawItem);
             }, (max, current) =>
             {
                 this.progressBarControl1.Properties.Maximum = max;
                 this.progressBarControl1.Position = current;
                 //替代方案
                 // this.progressBarControl1.Properties.Step = current;
                 // this.progressBarControl1.PerformStep();
             });
            _isCompleted = true;
            if (!_createResult)
            {
                this.progressBarControl1.Position = 0;
                this.itemForProgress.Visibility = DevExpress.XtraLayout.Utils.LayoutVisibility.Never;
            }
            this.PageStateChangedEvent?.Invoke();
        }

        /// <summary>
        /// 允许上一步
        /// </summary>
        public bool AllowPrev
        {
            get
            {
                if (!_isCompleted)
                {
                    return false;
                }
                if (!_createResult)
                {
                    return true;
                }
                return false;
            }
        }

        /// <summary>
        /// 允许下一步
        /// </summary>
        public bool AllowNext
        {
            get
            {
                if (_createResult)
                {
                    return true;
                }
                return false;
            }
        }

        /// <summary>
        /// 允许取消
        /// </summary>
        public bool AllowCancel
        {
            get
            {
                if (!_createResult)
                {
                    return true;
                }
                return false;
            }
        }

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

        /// <summary>
        /// 能否上一步
        /// </summary>
        /// <returns></returns>
        public Task<bool> CanPrev()
        {
            return Task.Run(() => this.AllowPrev);
        }

        /// <summary>
        /// 能否下一步
        /// </summary>
        public Task<bool> CanNext()
        {
            return Task.Run(() => this.AllowNext);
        }

        /// <summary>
        /// 能否取消
        /// </summary>
        public Task<bool> CanCancel()
        {
            return Task.Run(() => this.AllowCancel);
        }

        /// <summary>
        /// 能否完成
        /// </summary>
        public Task<bool> CanComplete()
        {
            return Task.Run(() => this.AllowComplete);
        }

        //绘制项
        private void listBoxControl1_DrawItem(object sender, DevExpress.XtraEditors.ListBoxDrawItemEventArgs e)
        {
            // 获取当前项目的索引
            int index = e.Index;

            // 检查是否是有效的项目索引
            if (index >= 0)
            {
                // 获取当前项目
                DrawItemViewModel item = (DrawItemViewModel)listBoxControl1.Items[index];

                // 设置字体和颜色
                Font font = new Font("Arial", 15);
                Brush brush = new SolidBrush(item.Color);
                // 绘制文本
                e.Graphics.DrawString(item.Text, font, brush, e.Bounds);
            }
        }


    }
}