#region

using System.Data;
using System.Drawing;
using CSFrameworkV5.Business;
using CSFrameworkV5.Common;
using CSFrameworkV5.Core;
using DevExpress.XtraGrid.Views.Base;
using DevExpress.XtraGrid.Views.Grid;

#endregion

namespace CSFrameworkV5.Library
{
    /// <summary>
    ///     表格编辑基类窗体
    /// </summary>
    public partial class frmBaseGridEditForm : frmBaseChild, IPrintableForm
    {
        /// <summary>
        ///     数据字典业务逻辑
        /// </summary>
        protected bllBaseDataDict
            _BLL = new bllNullObjectDataDict(); //临时实例        

        protected ISummaryView _SummaryView;

        public frmBaseGridEditForm()
        {
            InitializeComponent();
        }

        public virtual void DoCancel(IButtonInfo sender)
        {
            if (Msg.AskQuestion("确定要取消修改吗?"))
            {
                var dt = _SummaryView.DataSource as DataTable;
                dt.RejectChanges();
                _SummaryView.RefreshDataSource();
            }
        }

        /// <summary>
        ///     保存数据
        /// </summary>
        /// <param name="sender"></param>
        public virtual void DoSave(IButtonInfo sender)
        {
            _FocusEditor.Focus(); //跳动焦点，使当前单元格的值写入数据源

            if (_SummaryView.RowCount == 0)
            {
                Msg.Warning("没有数据！");
            }
            else
            {
                if (!ValidatingData()) return;

                try
                {
                    frmWaitingEx.ShowMe(this);
                    var dt = _SummaryView.DataSource as DataTable;
                    var changes = dt.GetChanges();
                    if (changes != null)
                    {
                        if (changes.Rows.Count > 0) _BLL.Update(changes);

                        dt.AcceptChanges();
                        _SummaryView.RefreshDataSource();
                        Msg.ShowInformation("保存成功！");
                    }
                    else
                    {
                        Msg.Warning("您没有修改数据！");
                    }
                }
                finally
                {
                    frmWaitingEx.HideMe(this);
                }
            }
        }

        /// <summary>
        ///     初始化数据窗体的按钮
        /// </summary>
        public override void InitButtons()
        {
            base.InitButtons();
            Buttons.AddRange(GetPrintableButtons());

            var b = new IButtonInfo[2];
            b[0] = ToolbarRegister.CreateButton(ButtonNameList.btnSave, "保存",
                ToolBarGroup.数据操作,
                Globals.LoadBitmap("32_Save.png"), new Size(57, 28), true, true,
                DoSave);
            b[1] = ToolbarRegister.CreateButton(ButtonNameList.btnCancel,
                "取消修改", ToolBarGroup.数据操作,
                Globals.LoadBitmap("32_Cancel.png"), new Size(57, 28), true,
                true, DoCancel);
            Buttons.AddRange(b);
        }

        /// <summary>
        ///     检查输入完整性
        /// </summary>
        /// <returns></returns>
        protected virtual bool ValidatingData()
        {
            return true;
        }

        #region IPrintableForm 成员

        /// <summary>
        ///     打印操作按钮
        /// </summary>
        /// <returns></returns>
        public IButtonInfo[] GetPrintableButtons()
        {
            var b = new IButtonInfo[1];
            if (ButtonAuthorized(ButtonAuthority.PRINT))
                b[0] = ToolbarRegister.CreateButton(ButtonNameList.btnPrint,
                    "预览", ToolBarGroup.打印功能,
                    Globals.LoadBitmap("32_Print.png"), new Size(57, 28), true,
                    true, DoPrint);

            return b;
        }

        /// <summary>
        ///     打印报表
        /// </summary>
        /// <param name="button"></param>
        public virtual void DoPrint(IButtonInfo button)
        {
        }

        #endregion

        #region 控制表格主键列不能修改,新增的记录可以修改

        /// <summary>
        ///     控制表格主键列不能修改,新增的记录可以修改
        /// </summary>
        /// <param name="view"></param>
        protected virtual void HandlePKColumn(GridView view)
        {
            view.FocusedColumnChanged += OnView_FocusedColumnChanged;
            view.FocusedRowChanged += OnView_FocusedRowChanged;
            view.RowCellStyle += OnView_RowCellStyle;
        }

        private void OnView_FocusedColumnChanged(object sender,
            FocusedColumnChangedEventArgs e)
        {
            var view = sender as GridView;
            view.OptionsBehavior.Editable = true;
            if (e.FocusedColumn == view.Columns[_BLL.KeyFieldName])
            {
                var R = view.GetFocusedDataRow();
                if (R != null)
                    //不支持在表格内修改已保存记录主键的值，新增的记录可以修改
                    view.OptionsBehavior.Editable =
                        R.RowState == DataRowState.Detached ||
                        R.RowState == DataRowState.Added;
            }
        }

        private void OnView_FocusedRowChanged(object sender,
            FocusedRowChangedEventArgs e)
        {
            var view = sender as GridView;
            view.OptionsBehavior.Editable = true;
            if (view.FocusedColumn == view.Columns[_BLL.KeyFieldName])
            {
                var R = view.GetFocusedDataRow();
                if (R != null)
                    //不支持在表格内修改已保存记录主键的值，新增的记录可以修改
                    view.OptionsBehavior.Editable =
                        R.RowState == DataRowState.Detached ||
                        R.RowState == DataRowState.Added;
            }
        }

        private void OnView_RowCellStyle(object sender, RowCellStyleEventArgs e)
        {
            //设置背景色
            if (e.Column == (sender as GridView).Columns[_BLL.KeyFieldName])
            {
                var R = (sender as GridView).GetFocusedDataRow();
                if (R.RowState == DataRowState.Detached ||
                    R.RowState == DataRowState.Added)
                    e.Appearance.BackColor = Color.Gainsboro;
                else
                    e.Appearance.BackColor = Color.Gainsboro;
            }
        }

        #endregion
    }
}