//树表格拖拽到表格
using DevExpress.Utils;
using DevExpress.XtraGrid;
using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraGrid.Views.Grid.ViewInfo;
using DevExpress.XtraTreeList;
using DevExpress.XtraTreeList.Nodes;
using Lskj.Data;
using Lskj.Util;
using System;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Lskj.Control.Model
{
    public class TreeGridDragGrid
    {
        /// <summary>
        /// 拖动位置
        /// </summary>
        private GridHitInfo _hitInfo;

        /// <summary>
        /// 拖拽时节点
        /// </summary>
        TreeListHitInfo downHitInfo = null;

        /// <summary>
        /// 拖动数据源
        /// </summary>
        private TreeList _sourceTreeList;
        /// <summary>
        /// 拖动目标源
        /// </summary>
        private GridView _targetGridView;
        /// <summary>
        /// 是否正在拖拽
        /// </summary>
        private bool _draging = false;
        public bool isDragCond = true;
        /// <summary>
        /// 是否正在拖拽
        /// </summary>
        public bool Draging { get { return _draging; } set { _draging = value; } }
        public bool CanDragParentNode = false;
        public bool isDropColorVisble = false;
        /// <summary>
        /// 表格数据拖动完成
        /// </summary>
        public event TreeGridDragGridCompleteEventHandler OnDragComplete;


        public TreeGridDragGrid(TreeList treeList, GridView gridView)
        {
            this._sourceTreeList = treeList;
            this._targetGridView = gridView;


            if (this._sourceTreeList == null || this._targetGridView == null)
                return;

            this._sourceTreeList.MouseDown += new MouseEventHandler(treeList_MouseDown);
            this._sourceTreeList.MouseMove += new MouseEventHandler(treeList_MouseMove);
            this._sourceTreeList.MouseUp += new MouseEventHandler(treeList_MouseUp);
            //this._sourceTreeList.HideSelection = false;
            this._sourceTreeList.AllowDrop = false;
            this._targetGridView.GridControl.AllowDrop = true;

            this._targetGridView.GridControl.DragOver += new DragEventHandler(treeGridView_DragOver);
            this._targetGridView.GridControl.DragEnter += new System.Windows.Forms.DragEventHandler(targetGridView_DragEnter);
            this._targetGridView.GridControl.DragDrop += new DragEventHandler(targetGridView_DragDrop);
        }

        private void targetGridView_DragDrop(object sender, DragEventArgs e)
        {
            if (this.OnDragComplete != null && this._draging)
            {
                this._draging = false;
                this.isDragCond = true;

                TreeGridDragGridArgs args = new TreeGridDragGridArgs();
                args.GridViewObj = this._targetGridView;
                args.TreeListObj = this._sourceTreeList;
                args.GridViewSelectRows = GetViewFocusedDataRows();
                args.SelectGridRow = this._targetGridView.GetDataRow(this._targetGridView.FocusedRowHandle);
                this.OnDragComplete(sender, args);
            }
        }


        /// <summary>
        /// <para>说明：获取选中行数据</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2019-10-18 </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>
        /// <returns>DataRow[].</returns>
        public DataRow[] GetViewFocusedDataRows()
        {
            var selectNodes = this._sourceTreeList.Selection;
            DataRow[] dataRows = new DataRow[selectNodes.Count];

            for (int i = 0; i < selectNodes.Count; i++)
            {
                TreeListNode treeNode = selectNodes[i];
                DataRowView dataRowView = this._sourceTreeList.GetDataRecordByNode(treeNode) as DataRowView;
                dataRows[i] = dataRowView != null ? dataRowView.Row : null;
            }



            //设置了复选框这个获取所有选中的节点行
            if (this._sourceTreeList.OptionsView.ShowCheckBoxes == true && this._sourceTreeList.OptionsSelection.MultiSelect == true && this._sourceTreeList.OptionsSelection.MultiSelectMode == TreeListMultiSelectMode.RowSelect)
            {
                List<TreeListNode> TreeListNodeList = this._sourceTreeList.GetAllCheckedNodes();
                dataRows = new DataRow[TreeListNodeList.Count];
                for (int i = 0; i < TreeListNodeList.Count; i++)
                {
                    TreeListNode treeNode = TreeListNodeList[i];
                    DataRowView dataRowView = this._sourceTreeList.GetDataRecordByNode(treeNode) as DataRowView;
                    dataRows[i] = dataRowView != null ? dataRowView.Row : null;
                }

            }

            return dataRows;
        }



        private void targetGridView_DragEnter(object sender, DragEventArgs e)
        {
            if (isDragCond)
            {
                e.Effect = DragDropEffects.Move;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }

        private void treeGridView_DragOver(object sender, DragEventArgs e)
        {
            TreeList treelist = sender as TreeList;
            if (treelist != null)
            {
                e.Effect = DragDropEffects.Move;
            }

            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：源表格鼠标放开</para>
        /// <para>创建人：</para>
        /// <para>创建日期： </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>
        private void treeList_MouseUp(object sender, MouseEventArgs e)
        {
            this._draging = false;
        }

        /// <para>说明：源表格鼠标移动</para>
        /// <para>创建人：</para>
        /// <para>创建日期： </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>
        private void treeList_MouseMove(object sender, MouseEventArgs e)
        {
            TreeList treelist = sender as TreeList;
            if (e.Button == MouseButtons.Left && downHitInfo != null)
            {
                if (_sourceTreeList.Selection.Count == 0)
                    return;
                Size dragSize = SystemInformation.DragSize;
                Rectangle dragRect = new Rectangle(new Point(downHitInfo.MousePoint.X - dragSize.Width / 2,
                    downHitInfo.MousePoint.Y - dragSize.Height / 2), dragSize);

                if (!dragRect.Contains(new Point(e.X, e.Y)))
                {
                    List<TreeListNode> node = new List<TreeListNode>();
                    foreach (TreeListNode n in _sourceTreeList.Selection)
                    {
                        node.Add(n);
                    }
                    treelist.DoDragDrop(node, DragDropEffects.Move);
                    downHitInfo = null;
                    DevExpress.Utils.DXMouseEventArgs.GetMouseArgs(e).Handled = true;
                }
            }


        }

        /// <summary>
        /// <para>说明：源树表格鼠�