cyf
317 lines
11 KiB
C#
317 lines
11 KiB
C#
//树表格拖拽到树表格
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using DevExpress.Utils;
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using DevExpress.XtraGrid;
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using DevExpress.XtraGrid.Views.Grid;
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using DevExpress.XtraGrid.Views.Grid.ViewInfo;
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using DevExpress.XtraTreeList;
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using DevExpress.XtraTreeList.Nodes;
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using Lskj.Data;
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using Lskj.Util;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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namespace Lskj.Control.Model
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{
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public class TreeGridDragTree
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{
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/// <summary>
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/// 拖拽是否忽视节点
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/// </summary>
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public bool NeglectingNodes = false;
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/// <summary>
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/// 拖拽条件与目标树选中节点数据进行替换比较
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/// </summary>
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public string isDragCond;
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/// <summary>
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/// 是否允许拖拽
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/// </summary>
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public bool isAllowDrag = true;
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/// <summary>
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/// 拖动位置
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/// </summary>
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private GridHitInfo _hitInfo;
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/// <summary>
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/// 拖拽时节点
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/// </summary>
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TreeListHitInfo downHitInfo = null;
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/// <summary>
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/// 拖动数据源
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/// </summary>
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private TreeList _sourceTreeList;
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/// <summary>
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/// 拖动目标源
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/// </summary>
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private TreeList _targetTreeList;
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/// <summary>
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/// 是否正在拖拽
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/// </summary>
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private bool _draging = false;
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/// <summary>
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/// 是否正在拖拽
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/// </summary>
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public bool Draging { get { return _draging; } set { _draging = value; } }
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public bool CanDragParentNode = false;
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public bool isDropColorVisble = false;
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/// <summary>
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/// 表格数据拖动完成
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/// </summary>
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public event TreeGridDragTreeGridCompleteEventHandler OnDragComplete;
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public TreeGridDragTree(TreeList sourceTreeList, TreeList targetTreeList)
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{
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this._sourceTreeList = sourceTreeList;
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this._targetTreeList = targetTreeList;
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if (this._sourceTreeList == null || this._targetTreeList == null)
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return;
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this._sourceTreeList.MouseDown += new MouseEventHandler(treeList_MouseDown);
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this._sourceTreeList.MouseMove += new MouseEventHandler(treeList_MouseMove);
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this._sourceTreeList.MouseUp += new MouseEventHandler(treeList_MouseUp);
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//this._sourceTreeList.HideSelection = false;
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this._sourceTreeList.AllowDrop = false;
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this._targetTreeList.AllowDrop = true;
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this._targetTreeList.DragOver += new DragEventHandler(treeView_DragOver);
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this._targetTreeList.DragDrop += new DragEventHandler(treeView_DragDrop);
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}
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/// <summary>
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/// <para>说明：获取选中行数据</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2019-10-18 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <returns>DataRow[].</returns>
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public DataRow[] GetViewFocusedDataRows()
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{
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var selectNodes = this._sourceTreeList.Selection;
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DataRow[] dataRows = new DataRow[selectNodes.Count];
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for (int i = 0; i < selectNodes.Count; i++)
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{
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TreeListNode treeNode = selectNodes[i];
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DataRowView dataRowView = this._sourceTreeList.GetDataRecordByNode(treeNode) as DataRowView;
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dataRows[i] = dataRowView != null ? dataRowView.Row : null;
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}
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return dataRows;
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}
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/// <summary>
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/// <para>说明：源表格鼠标放开</para>
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/// <para>创建人：</para>
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/// <para>创建日期： </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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private void treeList_MouseUp(object sender, MouseEventArgs e)
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{
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this._draging = false;
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}
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/// <para>说明：源表格鼠标移动</para>
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/// <para>创建人：</para>
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/// <para>创建日期： </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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private void treeList_MouseMove(object sender, MouseEventArgs e)
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{
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TreeList treelist = sender as TreeList;
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if (e.Button == MouseButtons.Left && downHitInfo != null)
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{
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if (_sourceTreeList.Selection.Count == 0)
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return;
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Size dragSize = SystemInformation.DragSize;
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Rectangle dragRect = new Rectangle(new Point(downHitInfo.MousePoint.X - dragSize.Width / 2,
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downHitInfo.MousePoint.Y - dragSize.Height / 2), dragSize);
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if (!dragRect.Contains(new Point(e.X, e.Y)))
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{
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List<TreeListNode> node = new List<TreeListNode>();
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foreach (TreeListNode n in _sourceTreeList.Selection)
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{
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node.Add(n);
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}
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treelist.DoDragDrop(node, DragDropEffects.Move);
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downHitInfo = null;
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DevExpress.Utils.DXMouseEventArgs.GetMouseArgs(e).Handled = true;
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}
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}
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}
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/// <summary>
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/// <para>说明：源树表格鼠标按下</para>
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/// <para>创建人：</para>
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/// <para>创建日期：2023-3-20 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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private void treeList_MouseDown(object sender, MouseEventArgs e)
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{
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//this._sourceTreeList.AllowDrop = false;
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//this._targetGridView.GridControl.AllowDrop = true;
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TreeList treelist = sender as TreeList;
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downHitInfo = null;
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_hitInfo = null;
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TreeListHitInfo hitInfo = treelist.CalcHitInfo(new Point(e.X, e.Y));
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// if (Control.ModifierKeys != Keys.None) return;
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if (e.Button == MouseButtons.Left && hitInfo != null)
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{
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StaticControl.SourceDragGridView = null;
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this._draging = true;
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downHitInfo = hitInfo;
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}
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}
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/// <summary>
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/// <para>说明：</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-11-13 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="DragEventArgs"/> instance containing the event data.</param>
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protected void treeView_DragOver(object sender, DragEventArgs e)
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{
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if (e.KeyState == (int)Keys.LButton && this._draging)
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{
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TreeList treeListGrid = sender as TreeList;
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treeListGrid.Select();
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Point gcPoint = treeListGrid.PointToScreen((sender as TreeList).Location);
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Point pt = new Point(e.X - gcPoint.X, e.Y - gcPoint.Y);
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TreeListHitInfo _hitInfo = treeListGrid.CalcHitInfo(pt);
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if (NeglectingNodes)
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{
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e.Effect = DragDropEffects.Move;
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if (_hitInfo != null && _hitInfo.Node != null)
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{
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_hitInfo.Node.Expanded = true;
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}
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}
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else
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{
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if (_hitInfo == null || treeListGrid.GetNodeIndex(_hitInfo.Node) < 0)
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{
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e.Effect = DragDropEffects.None;
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return;
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}
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DataRowView dataRowView = this._targetTreeList.GetDataRecordByNode(_hitInfo.Node) as DataRowView;
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DataRow Row = dataRowView != null ? dataRowView.Row : null;
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bool isLastNode = _hitInfo.Node.Nodes.Count == 0;
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if (!isLastNode)
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{
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_hitInfo.Node.Expanded = true; ;
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}
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//DataRow[] rowItems = this.GetViewFocusedDataRows();
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if (isLastNode || CanDragParentNode)
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{
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if (ReplaceHelper.ReplaceRowParamCond(Row, this.isDragCond) && isAllowDrag)
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{
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e.Effect = DragDropEffects.Move;
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treeListGrid.FocusedNode = _hitInfo.Node;
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}
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else
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{
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e.Effect = DragDropEffects.None;
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}
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}
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else
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{
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e.Effect = DragDropEffects.None;
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}
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}
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}
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}
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/// <summary>
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/// <para>说明：</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2017-11-13 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="DragEventArgs"/> instance containing the event data.</param>
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protected void treeView_DragDrop(object sender, DragEventArgs e)
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{
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if (this.OnDragComplete != null && this._draging)
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{
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this._draging = false;
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TreeList treeListGrid = sender as TreeList;
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Point gcPoint = treeListGrid.PointToScreen((sender as TreeList).Location);
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Point pt = new Point(e.X - gcPoint.X, e.Y - gcPoint.Y);
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TreeListHitInfo _hitInfo = treeListGrid.CalcHitInfo(pt);
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TreeListNode treeNode = _hitInfo.Node;
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if (!NeglectingNodes)
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{
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if (treeNode == null) return;
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if (treeNode.Nodes.Count() > 0 && !CanDragParentNode)
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{
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MessageUtil.Show(string.Format(ResourceKeys.UnLastTreeNode, treeNode.GetDisplayText(treeListGrid.KeyFieldName)));
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return;
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}
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}
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if (!e.Data.GetDataPresent(typeof(TreeNode)))
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{
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if (OnDragComplete != null)
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{
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TreeGridDragTreeGridArgs args = new TreeGridDragTreeGridArgs();
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args.SourceTreeList = this._sourceTreeList;
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args.TargetTreeList = this._targetTreeList;
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args.GridViewSelectRows = this.GetViewFocusedDataRows(); ;
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args.SelectTreeNode = treeNode;
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OnDragComplete(sender, args);
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}
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}
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}
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}
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}
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}
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