/******************************
* 说明：表格拖拽到表格
* 创建人：龚宇超
* 创建日期：2017-11-13
* 修改人：
* 修改日期：
* 修改备注：
* 版本：1.0.0.0
******************************/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraGrid.Views.Grid.ViewInfo;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.Utils;
using System.Data;
using DevExpress.XtraGrid;
using Lskj.Util;
using DevExpress.XtraGrid.Views.BandedGrid;

namespace Lskj.Control.Model
{
    /// <summary>
    /// 表格拖拽到表格
    /// </summary>
    public class BandedGridDragGrid
    {
        /// <summary>
        /// 是否正在拖拽
        /// </summary>
        private bool _draging = false;
        /// <summary>
        /// 拖动位置
        /// </summary>
        private GridHitInfo _hitInfo;
        /// <summary>
        /// 当前操作的GridView
        /// </summary>
        private BandedGridView _sourceGridView;
        /// <summary>
        /// 目标GridView
        /// </summary>
        private GridView _targetGridView;
        /// <summary>
        /// 拖动完成后调用
        /// </summary>
        public event BandedGridFragGridCompleteEventHandler OnDragComplete;
        /// <summary>
        /// 顺序值的集合
        /// </summary>
        private List<int> DragHander = new List<int>();
        public bool isDropColorVisble = false;
        /// <summary>
        /// 外部条件是否允许拖拽
        /// </summary>
        public bool isDragCond = true;
        /// <summary>
        /// Initializes a new instance of the <see cref="BandedGridDragGrid"/> class.
        /// </summary>
        /// <param name="curGridView">当前GridView</param>
        /// <param name="tarGridView">目标GridView.</param>
        public BandedGridDragGrid(BandedGridView sourceView, GridView targetView)
        {
            this._sourceGridView = sourceView;
            this._targetGridView = targetView;
            //记录所有拖拽类到来源表中，后每次进入目标表禁用其他拖拽类的拖拽事件
            if (StaticBandedControl.BandedGridViewDragGridDic.ContainsKey(sourceView))
            {
                List<BandedGridDragGrid> BandedGridDragGrids = StaticBandedControl.BandedGridViewDragGridDic[sourceView];
                if (!BandedGridDragGrids.Contains(this))
                {
                    BandedGridDragGrids.Add(this);
                }
            }
            else
            {
                List<BandedGridDragGrid> BandedGridDragGrids = new List<BandedGridDragGrid>();
                BandedGridDragGrids.Add(this);
                StaticBandedControl.BandedGridViewDragGridDic.Add(sourceView, BandedGridDragGrids);
            }
            if (StaticBandedControl.BandedTargetViewDragGridDic.ContainsKey(targetView))
            {
                List<BandedGridDragGrid> BandedGridDragGrids = StaticBandedControl.BandedTargetViewDragGridDic[targetView];
                if (!BandedGridDragGrids.Contains(this))
                {
                    BandedGridDragGrids.Add(this);
                }
            }
            else
            {
                List<BandedGridDragGrid> BandedGridDragGrids = new List<BandedGridDragGrid>();
                BandedGridDragGrids.Add(this);
                StaticBandedControl.BandedTargetViewDragGridDic.Add(targetView, BandedGridDragGrids);
            }

            if (this._sourceGridView == null || this._targetGridView == null) return;
            this._sourceGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(sourceGridView_MouseDown);
            this._sourceGridView.MouseMove += new System.Windows.Forms.MouseEventHandler(sourceGridView_MouseMove);
            this._sourceGridView.MouseUp += new System.Windows.Forms.MouseEventHandler(sourceGridView_MouseUp);
            this._sourceGridView.RowClick += OnRowClick;
            this._targetGridView.GridControl.AllowDrop = true;
            this._targetGridView.GridControl.DragOver += new DragEventHandler(gridControl_DragOver);
            this._targetGridView.GridControl.DragEnter += new System.Windows.Forms.DragEventHandler(gridControl_DragEnter);
            this._targetGridView.GridControl.DragDrop += new System.Windows.Forms.DragEventHandler(gridControl_DragDrop);
            this._targetGridView.GridControl.DragLeave += new EventHandler(gridControl_DragLeave);
        }
        /// <summary>
        /// 点击时候判断位置
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnRowClick(object sender, RowClickEventArgs e)
        {
            int[] dragRowsIndex = _sourceGridView.GetSelectedRows();
            int newGetSelect = _sourceGridView.FocusedRowHandle;
            if (dragRowsIndex.Length > 1)
            {
                if (DragHander.Count > dragRowsIndex.Length)
                {
                    DragHander.Remove(newGetSelect);
                }
                else
                {
                    if (dragRowsIndex.Length == 2)
                    {
                        int firstIndex = dragRowsIndex.Cast<int>().FirstOrDefault(x => x != newGetSelect);
                        if (!DragHander.Contains(firstIndex))
                        {
                            DragHander.Add(firstIndex);
                        }
                        DragHander.Add(newGetSelect);
                    }
                    else
                    {
                        if (!DragHander.Contains(newGetSelect))
                        {
                            DragHander.Add(newGetSelect);
                        }
                    }
                }
            }
            else
            {
                DragHander.Clear();
            }
        }

        /// <summary>
        /// <para>说明：获取表格选中行数据</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="rowHandles">The row handles.</param>
        /// <returns>DataRow[].</returns>
        private DataRow[] GetGridSelectRows(int[] rowHandles)
        {
            List<DataRow> rows = new List<DataRow>();

            foreach (int handle in rowHandles)
            {
                DataRow row = this._sourceGridView.GetDataRow(handle);
                rows.Add(row);
            }

            return rows.ToArray();
        }
        /// <summary>
        /// <para>说明：源表格鼠标按下</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.</param>
        protected void sourceGridView_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            this._sourceGridView.GridControl.AllowDrop = false;
            this._targetGridView.GridControl.AllowDrop = true;
            this._hitInfo = null;
            if (System.Windows.Forms.Control.ModifierKeys != Keys.None) return;

            BandedGridView gridView = sender as BandedGridView;
            GridHitInfo hitInfo = gridView.CalcHitInfo(new Point(e.X, e.Y));

            if (e.Button == MouseButtons.Left && hitInfo.RowHandle >= 0)
            {
                this._draging = true;
                StaticBandedControl.SourceDragBandedGridView = gridView;
                this._hitInfo = hitInfo;
            }
        }
        /// <summary>
        /// <para>说明：源表格鼠标移动</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.</param>
        protected void sourceGridView_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            BandedGridView gridView = sender as BandedGridView;
            if (e.Button == MouseButtons.Left && this._hitInfo != null)
            {
                Size dragSize = SystemInformation.DragSize;
                Rectangle dragRect = new Rectangle(new Point(this._hitInfo.HitPoint.X - dragSize.Width / 2,
                    this._hitInfo.HitPoint.Y - dragSize.Height / 2), dragSize);

                if (!dragRect.Contains(new Point(e.X, e.Y)))
                {
                    object row = gridView.GetRow(this._hitInfo.RowHandle >= 0 ? this._hitInfo.RowHandle : 0);
                    if (row != null)
                    {
                        gridView.GridControl.DoDragDrop(row, DragDropEffects.Move);
                    }
                    this._hitInfo = null;
                    DXMouseEventArgs.GetMouseArgs(e).Handled = true;
                }
            }
        }
        /// <summary>
        /// <para>说明：源表格鼠标放开</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.MouseEventArgs"/> instance containing the event data.</param>
        protected void sourceGridView_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            StaticBandedControl.SourceDragBandedGridView = null;
            this._draging = false;
        }
        /// <summary>
        /// <para>说明：移动到目标表格上</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.DragEventArgs"/> instance containing the event data.</param>
        private void gridControl_DragOver(object sender, DragEventArgs e)
        {
            GridControl gridControl = (GridControl)sender;
            GridView gridView = gridControl.MainView as GridView;
            this._draging = true;
            if (StaticBandedControl.SourceDragBandedGridView != null && StaticBandedControl.BandedGridViewDragGridDic.ContainsKey(StaticBandedControl.SourceDragBandedGridView))
            {
                List<BandedGridDragGrid> BandedGridDragGrids = StaticBandedControl.BandedGridViewDragGridDic[StaticBandedControl.SourceDragBandedGridView];
                foreach (BandedGridDragGrid item in BandedGridDragGrids)
                {
                    if (item != null && item._targetGridView == gridView)
                    {
                        item._draging = true;
                    }
                    else
                    {
                        item._draging = false;
                    }
                }
            }
            if (StaticBandedControl.BandedTargetViewDragGridDic.ContainsKey(gridView))
            {
                List<BandedGridDragGrid> BandedGridDragGrids = StaticBandedControl.BandedTargetViewDragGridDic[gridView];
                foreach (BandedGridDragGrid item in BandedGridDragGrids)
                {
                    if (item != null && StaticBandedControl.SourceDragBandedGridView != null && item._sourceGridView == StaticBandedControl.SourceDragBandedGridView)
                    {
                        item._draging = true;
                    }
                    else
                    {
                        item._draging = false;
                    }
                }
            }
            GridControl targetControl = (sender as GridControl);
            GridView targetGrid = targetControl.FocusedView as GridView;
            Point gcPoint = targetControl.PointToScreen((sender as GridControl).Location);
            Point pt = new Point(e.X - gcPoint.X, e.Y - gcPoint.Y);
            _hitInfo = targetGrid.CalcHitInfo(pt);
            if (_hitInfo == null || _hitInfo.RowHandle < 0) return;
            if (!isDropColorVisble) targetGrid.SelectRow(_hitInfo.RowHandle);
            targetGrid.FocusedRowHandle = _hitInfo.RowHandle;
        }
        /// <summary>
        /// <para>说明：离开目标表格</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.DragEventArgs"/> instance containing the event data.</param>
        private void gridControl_DragLeave(object sender, EventArgs e)
        {
            this._draging = false;
        }
        /// <summary>
        /// <para>说明：移动到目标表格</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.DragEventArgs"/> instance containing the event data.</param>
        protected void gridControl_DragEnter(object sender, System.Windows.Forms.DragEventArgs e)
        {
            if (isDragCond)
            {
                e.Effect = DragDropEffects.Move;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }
        /// <summary>
        /// <para>说明：拖动完成时</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-11-13 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="System.Windows.Forms.DragEventArgs"/> instance containing the event data.</param>
        protected void gridControl_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
        {
            if (this.OnDragComplete != null && this._draging)
            {
                this._draging = false;
                this.isDragCond = true;

                BandedGridDragGridArgs args = new BandedGridDragGridArgs();
                args.SourceGridViewObj = this._sourceGridView;
                args.TargetGridViewObj = this._targetGridView;
                args.GridViewSelectRows = GetGridSelectRows(DragHander.Count > 1 && this._sourceGridView.GetSelectedRows().Length == DragHander.Count ? DragHander.ToArray() : this._sourceGridView.GetSelectedRows());
                args.SelectGridRow = this._targetGridView.GetDataRow(this._targetGridView.FocusedRowHandle);
                this.OnDragComplete(sender, args);

                this._draging = false;
            }
        }
        #region 表格第一列添加复选框
        /// <summary>
        /// <para>说明：表格第一列添加复选框</para>
        /// <para>创建人：唐德馨</para>
        /// <para>创建日期：2021-07-08  </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="gridColumn">The grid columnFilterPopupChecke.</param>
        public static void GridAddCheckBox(GridView gridview)
        {
            gridview.OptionsSelection.MultiSelect = true;
            gridview.OptionsSelection.MultiSelectMode = GridMultiSelectMode.CheckBoxRowSelect;
            gridview.OptionsSelection.EnableAppearanceFocusedCell = false;
            gridview.OptionsBehavior.EditorShowMode = EditorShowMode.MouseDown;
            foreach (DevExpress.XtraGrid.Columns.GridColumn column in gridview.Columns)
            {
                GridColumnModel columnModel = (GridColumnModel)column.Tag;
                if (gridview.Columns.IndexOf(column) > 0 && columnModel != null && columnModel.CanSum)
                {
                    foreach (GridSummaryItem gridSummaryItem in column.Summary)
                    {
                        gridSummaryItem.SummaryType = DevExpress.Data.SummaryItemType.Custom;
                    }
                    GridSummaryItem gridGroupSummaryItem = gridview.GroupSummary.Where(n => n.FieldName.Equals(column.FieldName)).FirstOrDefault();
                    if (gridGroupSummaryItem != null)
                    {
                        gridGroupSummaryItem.SummaryType = DevExpress.Data.SummaryItemType.Custom;
                    }
                }
            }
        }
        #endregion
    }
}