using System;
using System.Windows.Forms;
using Infragistics.Win.UltraWinGrid;

namespace Core.Mes.Client.Comm.Control
{
    /// <summary>
    /// ExtendedUltraGrid
    /// 1.支持列标题复选框全选功能
    /// </summary>
    public class ExtendedUltraGrid : UltraGrid
    {
        /// <summary>
        /// 需要进行选择的列名
        /// </summary>
        public string SelectAllColumnName{get;set;}

        internal bool IsGroupMode
        {
            get
            {
                foreach (var row in this.Rows)
                {
                    if (row.IsGroupByRow)
                    {
                        return true;
                    }
                }
                return false;
            }
        }

        internal CheckState CheckState{ get; set; }

        /// <summary>
        /// ExtendedUltraGrid
        /// </summary>
        public ExtendedUltraGrid()
        {
            this.CreationFilter = new CheckableHeaderCreationFilter(this);
        }

        /// <summary>
        /// 重写 UltraGrid OnCellChange方法
        /// 全选时或反选时触发对应CellChange事件
        /// </summary>
        /// <param name="e"></param>
        protected override void OnCellChange(CellEventArgs e)
        {
            base.OnCellChange(e);
            if (e.Cell.Column.Key.Equals(this.SelectAllColumnName))
            {
                if (!Convert.ToBoolean(e.Cell.Value))
                {
                    if (CheckState == CheckState.Checked) CheckState = CheckState.Unchecked;
                }
                else
                {
                    if (e.Cell.Row.Band.Columns.Exists(SelectAllColumnName))
                    {
                        foreach (Infragistics.Win.UltraWinGrid.UltraGridRow row in this.Rows)
                        {
                            if (!Convert.ToBoolean(row.Cells[SelectAllColumnName].Value))
                            {
                                return;
                            }
                        }
                        CheckState = CheckState.Checked;
                    }
                }
            }
        }

        internal void ChangeCell(Infragistics.Win.UltraWinGrid.UltraGridCell cell)
        {
            if (cell != null)
            {
                OnCellChange(new CellEventArgs(cell));
            }
        }
    }
}