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■ TreeList 클래스 : DragEnter/DragDrop/DragOver 이벤트를 사용해 드래그 & 드롭 사용하기

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TestProject.zip


MainForm.cs

 

 

using System;

using System.ComponentModel;

using System.Drawing;

using System.Windows.Forms;

 

using DevExpress.Utils;

using DevExpress.XtraEditors;

using DevExpress.XtraGrid;

using DevExpress.XtraGrid.Views.Grid.ViewInfo;

using DevExpress.XtraTreeList;

using DevExpress.XtraTreeList.Nodes;

 

namespace TestProject

{

    /// <summary>

    /// 메인 폼

    /// </summary>

    public partial class MainForm : XtraForm

    {

        //////////////////////////////////////////////////////////////////////////////////////////////////// Field

        ////////////////////////////////////////////////////////////////////////////////////////// Private

 

        #region Field

 

        /// <summary>

        /// 그리드 히트 정보

        /// </summary>

        private GridHitInfo gridHitInfo = null;

 

        /// <summary>

        /// 그리드 데이터 소스

        /// </summary>

        private BindingList<Person> gridDataSource = new BindingList<Person>();

 

        #endregion

 

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

        ////////////////////////////////////////////////////////////////////////////////////////// Public

 

        #region 생성자 - MainForm()

 

        /// <summary>

        /// 생성자

        /// </summary>

        public MainForm()

        {

            InitializeComponent();

 

            this.gridDataSource.Add(new Person("John"   , "Smith"   , "USA"   ));

            this.gridDataSource.Add(new Person("Michael", "Suyama"  , "UK"    ));

            this.gridDataSource.Add(new Person("Laura"  , "Callahan", "UK"    ));

            this.gridDataSource.Add(new Person("Gerard" , "Blain"   , "France"));

            this.gridDataSource.Add(new Person("Sergio" , "Rubini"  , "Italy" ));

            this.gridDataSource.Add(new Person("Andrew" , "Fuller"  , "USA"   ));

 

            this.gridControl.DataSource = this.gridDataSource;

 

            this.gridView.OptionsBehavior.EditorShowMode = EditorShowMode.Click;

 

            this.treeList.OptionsView.ShowIndentAsRowStyle = true;

            this.treeList.AllowDrop                        = true;

            this.treeList.KeyFieldName                     = "ID";

            this.treeList.ParentFieldName                  = "ParentID";

 

            this.treeList.DataSource = new BindingList<PersonExtended>();

 

            this.gridControl.MouseDown += gridControl_MouseDown;

            this.gridControl.MouseMove += gridControl_MouseMove;

            this.treeList.DragEnter    += treeList_DragEnter;

            this.treeList.DragDrop     += treeList_DragDrop;

            this.treeList.DragOver     += treeList_DragOver;

        }

 

        #endregion

 

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method

        ////////////////////////////////////////////////////////////////////////////////////////// Private

 

        #region 그리드 컨트롤 마우스 DOWN 처리하기 - gridControl_MouseDown(sender, e)

 

        /// <summary>

        /// 그리드 컨트롤 마우스 DOWN 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void gridControl_MouseDown(object sender, MouseEventArgs e)

        {

            this.gridHitInfo = this.gridView.CalcHitInfo(new Point(e.X, e.Y));

        }

 

        #endregion

        #region 그리드 컨트롤 마우스 이동시 처리하기 - gridControl_MouseMove(sender, e)

 

        /// <summary>

        /// 그리드 컨트롤 마우스 이동시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void gridControl_MouseMove(object sender, MouseEventArgs e)

        {

            if(this.gridHitInfo == null)

            {

                return;

            }

 

            if(e.Button != MouseButtons.Left)

            {

                return;

            }

 

            Rectangle dragRectangle = new Rectangle

            (

                new Point

                (

                    this.gridHitInfo.HitPoint.X - SystemInformation.DragSize.Width  / 2,

                    this.gridHitInfo.HitPoint.Y - SystemInformation.DragSize.Height / 2

                ),

                SystemInformation.DragSize

            );

 

            if(!(this.gridHitInfo.RowHandle == GridControl.InvalidRowHandle) && !dragRectangle.Contains(new Point(e.X, e.Y)))

            {

                object data = this.gridView.GetRow(gridHitInfo.RowHandle);

 

                this.gridControl.DoDragDrop(data, DragDropEffects.Copy);

            }

        }

 

        #endregion

        #region 트리 리스트 드래그 ENTER 처리하기 - treeList_DragEnter(sender, e)

 

        /// <summary>

        /// 트리 리스트 드래그 ENTER 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void treeList_DragEnter(object sender, DragEventArgs e)

        {

            e.Effect = DragDropEffects.Copy;

        }

 

        #endregion

        #region 트리 리스트 드래그 OVER 처리하기 - treeList_DragOver(sender, e)

 

        /// <summary>

        /// 트리 리스트 드래그 OVER 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void treeList_DragOver(object sender, DragEventArgs e)

        {

            e.Effect = DragDropEffects.Copy;

        }

 

        #endregion

        #region 트리 리스트 드래그 DROP 처리하기 - treeList_DragDrop(sender, e)

 

        /// <summary>

        /// 트리 리스트 드래그 DROP 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void treeList_DragDrop(object sender, DragEventArgs e)

        {

            TreeList treeList = sender as TreeList;

 

            DXDragEventArgs args = treeList.GetDXDragEventArgs(e);

 

            DragInsertPosition position = args.DragInsertPosition;

 

            Person persion = e.Data.GetData(typeof(TestProject.Person)) as Person;

 

            if(persion == null)

            {

                return;

            }

 

            int parentID = (int)treeList.RootValue;

 

            TreeListNode node = args.TargetNode;

 

            if(node == null)

            {

                treeList.AppendNode((new PersonExtended(persion, parentID)).ToArray(), null);

            }

            else

            {

                if(position == DragInsertPosition.AsChild)

                {

                    parentID = Convert.ToInt32(node.GetValue("ID"));

 

                    object[] persionValueArray = (new PersonExtended(persion, parentID)).ToArray();

 

                    treeList.AppendNode(persionValueArray, node);

                }

 

                if(position == DragInsertPosition.Before)

                {

                    parentID = Convert.ToInt32(node.GetValue("ParentID"));

 

                    object[] persionValueArray = (new PersonExtended(persion, parentID)).ToArray();

 

                    TreeListNode newNode = treeList.AppendNode(persionValueArray, node.ParentNode);

 

                    int targetPosition;

 

                    if(node.ParentNode == null)

                    {

                        targetPosition = treeList.Nodes.IndexOf(node);

                    }

                    else

                    {

                        targetPosition = node.ParentNode.Nodes.IndexOf(node);

                    }

 

                    treeList.SetNodeIndex(newNode, targetPosition);

                }

 

                node.Expanded = true;

            }

        }

 

        #endregion

    }

}

 

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Posted by 사용자 icodebroker
TAG

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