257 lines
9.1 KiB
C#
257 lines
9.1 KiB
C#
/******************************
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* 说明：表格拖拽到树结构
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* 创建人：龚宇超
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* 创建日期：2017-11-13
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* 修改人：
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* 修改日期：
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* 修改备注：
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* 版本：1.0.0.0
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******************************/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using DevExpress.XtraGrid.Views.Grid.ViewInfo;
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using DevExpress.XtraGrid.Views.Grid;
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using System.Windows.Forms;
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using Lskj.Data;
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using System.Drawing;
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using DevExpress.Utils;
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using System.Data;
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namespace Lskj.Control.Model
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{
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/// <summary>
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/// 表格拖拽到树结构
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/// </summary>
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public class GridDragTree : IDisposable
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{
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private bool _disposed;
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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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/// 拖动数据源
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/// </summary>
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private GridView _gridView;
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/// <summary>
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/// 拖动目标源
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/// </summary>
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private TreeView _treeView;
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public bool CanDragParentNode = 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 GridDragTreeCompleteEventHandler OnDragComplete;
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public GridDragTree(GridView gridView, TreeView treeView)
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{
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this._gridView = gridView;
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this._treeView = treeView;
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if (this._gridView == null || this._treeView == null)
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return;
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this._gridView.MouseDown += new MouseEventHandler(gridView_MouseDown);
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this._gridView.MouseMove += new MouseEventHandler(gridView_MouseMove);
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this._treeView.HideSelection = false;
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this._treeView.AllowDrop = true;
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this._treeView.DragOver += new DragEventHandler(treeView_DragOver);
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this._treeView.DragDrop += new DragEventHandler(treeView_DragDrop);
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if (this._gridView.GridControl != null)
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{
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this._gridView.GridControl.Disposed += OnOwnerDisposed;
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}
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this._treeView.Disposed += OnOwnerDisposed;
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}
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private void OnOwnerDisposed(object sender, EventArgs e)
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{
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Dispose();
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}
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/// <summary>
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/// 模块关闭时解除源表格和目标树的拖拽事件。
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/// </summary>
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public void Dispose()
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{
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if (_disposed) return;
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_disposed = true;
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if (_gridView != null)
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{
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_gridView.MouseDown -= gridView_MouseDown;
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_gridView.MouseMove -= gridView_MouseMove;
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if (_gridView.GridControl != null)
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{
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_gridView.GridControl.Disposed -= OnOwnerDisposed;
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}
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}
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if (_treeView != null)
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{
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_treeView.DragOver -= treeView_DragOver;
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_treeView.DragDrop -= treeView_DragDrop;
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_treeView.Disposed -= OnOwnerDisposed;
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}
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OnDragComplete = null;
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_hitInfo = null;
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_gridView = null;
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_treeView = null;
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}
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/// <summary>
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/// <para>说明：获取表格选中行数据</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：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="rowHandles">The row handles.</param>
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/// <returns>DataRow[].</returns>
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private DataRow[] GetGridSelectRows(int[] rowHandles)
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{
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List<DataRow> rows = new List<DataRow>();
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foreach (int handle in rowHandles)
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{
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DataRow row = this._gridView.GetDataRow(handle);
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rows.Add(row);
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}
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return rows.ToArray();
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}
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/// <summary>
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/// <para>说明：GridView 鼠标按下</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="MouseEventArgs"/> instance containing the event data.</param>
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protected void gridView_MouseDown(object sender, MouseEventArgs e)
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{
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this._hitInfo = null;
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if (System.Windows.Forms.Control.ModifierKeys != Keys.None) return;
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GridView gridView = sender as GridView;
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GridHitInfo hitInfo = gridView.CalcHitInfo(new Point(e.X, e.Y));
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if (e.Button == MouseButtons.Left && hitInfo.RowHandle >= 0)
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{
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this._hitInfo = hitInfo;
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}
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}
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/// <summary>
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/// <para>说明：鼠标移动</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="MouseEventArgs"/> instance containing the event data.</param>
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protected void gridView_MouseMove(object sender, MouseEventArgs e)
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{
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GridView gridView = sender as GridView;
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if (e.Button == MouseButtons.Left && this._hitInfo != null)
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{
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Size dragSize = SystemInformation.DragSize;
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Rectangle dragRect = new Rectangle(new Point(this._hitInfo.HitPoint.X - dragSize.Width / 2, this._hitInfo.HitPoint.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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object row = gridView.GetRow(this._hitInfo.RowHandle);
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gridView.GridControl.DoDragDrop(row, DragDropEffects.Move);
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this._hitInfo = null;
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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：</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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TreeView treeView = sender as TreeView;
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treeView.Select();
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TreeNode treeNode = treeView.GetNodeAt(treeView.PointToClient(new Point(e.X, e.Y)));
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if (treeNode != null)
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{
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bool isLastNode = treeNode.Nodes.Count == 0;
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if (!isLastNode)
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{
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treeNode.Expand();
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}
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DataRow[] rowItems = this.GetGridSelectRows(this._gridView.GetSelectedRows());
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if (isLastNode || CanDragParentNode)
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{
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e.Effect = DragDropEffects.Move;
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treeView.SelectedNode = treeNode;
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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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/// <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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TreeView treeView = sender as TreeView;
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TreeNode treeNode = treeView.GetNodeAt(treeView.PointToClient(new Point(e.X, e.Y)));
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if (treeNode == null) return;
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if (treeNode.GetNodeCount(true) > 0 && !CanDragParentNode)
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{
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MessageUtil.Show(string.Format(ResourceKeys.UnLastTreeNode, treeNode.Text));
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return;
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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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GridDragTreeArgs args = new GridDragTreeArgs();
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args.GridViewObj = this._gridView;
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args.TreeViewObj = this._treeView;
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args.GridViewSelectRows = this.GetGridSelectRows(this._gridView.GetSelectedRows());
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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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