[WinForm]DevExpress之TreeList使用小记

using System;using System.Collections.Generic;using System.Drawing;using System.Windows.Forms;using DevExPRess.XtraBars;using DevExpress.XtraTreeList;using DevExpress.XtraTreeList.Nodes;namespace DevExpressUtilHelpV3{    public static class TreeListToolV3    {        public delegate string BuildPathRule(string nodeText, string fullPathInfo);        /// <summary>        /// 获取选中节点到根节点的所有信息        /// </summary>        /// <param name="focusedNode">TreeListNode</param>        /// <param name="columnID">列名称</param>        /// <param name="buildPathRule">规则委托</param>        /// <returns>路径信息</returns>        public static string FullPathInfo(this TreeListNode focusedNode, string columnID, BuildPathRule buildPathRule)        {            if (focusedNode == null)                throw new ArgumentNullException("focusedNode");            if (string.IsNullOrEmpty("columnID"))                throw new ArgumentNullException("columnID");            string _fullPathInfo = string.Empty;            _fullPathInfo = focusedNode.GetDisplayText(columnID);            while (focusedNode.ParentNode != null)            {                focusedNode = focusedNode.ParentNode;                string _nodeText = focusedNode.GetDisplayText(columnID).Trim();                _fullPathInfo = buildPathRule(_nodeText, _fullPathInfo);            }            return _fullPathInfo;        }        public delegate bool CompareNodeRule(TreeListNode focusedNode);        /// <summary>        /// 获取筛选节点到根节点的所有信息        /// </summary>        /// <param name="focusedNode">TreeListNode</param>        /// <param name="columnID">列名称</param>        /// <param name="compareNodeRule">规则委托</param>        /// <param name="buildPathRule">规则委托</param>        /// <returns>路径信息</returns>        public static string FilterPathInfo(this TreeListNode focusedNode, string columnID, CompareNodeRule compareNodeRule, BuildPathRule buildPathRule)        {            if (focusedNode == null)                throw new ArgumentNullException("focusedNode");            if (string.IsNullOrEmpty("columnID"))                throw new ArgumentNullException("columnID");            string _fullPathInfo = string.Empty;            _fullPathInfo = focusedNode.GetDisplayText(columnID);            while (focusedNode.ParentNode != null)            {                focusedNode = focusedNode.ParentNode;                if (compareNodeRule(focusedNode))                {                    string _nodeText = focusedNode.GetDisplayText(columnID).Trim();                    _fullPathInfo = buildPathRule(_nodeText, _fullPathInfo);                }            }            return _fullPathInfo;        }        /// <summary>        /// 递归遍历树节点        /// </summary>        /// <param name="tree"></param>        /// <param name="opreateRule"></param>        public static void LoopTree(this TreeList tree, Action<TreeListNode> opreateRule)        {            if (tree == null)                throw new ArgumentNullException("tree");            foreach (TreeListNode node in tree.Nodes)            {                opreateRule(node);                if (node.Nodes.Count > 0)                {                    LoopTreeNodes(node, opreateRule);                }            }        }        /// <summary>        /// 递归遍历TreeListNode节点        /// </summary>        /// <param name="node"></param>        /// <param name="opreateRule"></param>        public static void LoopTreeNodes(this TreeListNode node, Action<TreeListNode> opreateRule)        {            if (node == null)                throw new ArgumentNullException("node");            foreach (TreeListNode _childNode in node.Nodes)            {                opreateRule(_childNode);                LoopTreeNodes(_childNode, opreateRule);            }        }        /// <summary>        /// 递归遍历TreeListNode,当opreateRule返回false停止循环        /// </summary>        /// <param name="node">TreeListNode</param>        /// <param name="opreateRule">Func<TreeListNode, bool></param>        public static void LoopTreeNodes_Break(this TreeListNode node, Func<TreeListNode, bool> opreateRule)        {            if (node == null)                throw new ArgumentNullException("node");            foreach (TreeListNode _childNode in node.Nodes)            {                if (!opreateRule(_childNode))                    break;                LoopTreeNodes_Break(_childNode, opreateRule);            }        }        /// <summary>        /// 递归遍历TreeListNode,当opreateRule返回false跳出循环，直接进入下次循环        /// </summary>        /// <param name="node">TreeListNode</param>        /// <param name="opreateRule">Func<TreeListNode, bool></param>        public static void LoopTreeNodes_Continue(this TreeListNode node, Func<TreeListNode, bool> opreateRule)        {            if (node == null)                throw new ArgumentNullException("node");            foreach (TreeListNode _childNode in node.Nodes)            {                if (!opreateRule(_childNode))                    continue;                LoopTreeNodes_Continue(_childNode, opreateRule);            }        }        public delegate bool CheckNodeRule(TreeListNode fucusedNode);        public delegate void CheckNodeNullRule();        /// <summary>        /// 节点为null检查        /// </summary>        /// <param name="fucusedNode">TreeListNode</param>        /// <param name="checkNodeRule">若为NULL,处理逻辑</param>        /// <returns>TreeListNode</returns>        public static TreeListNode CheckNull(this TreeListNode fucusedNode, CheckNodeNullRule checkNodeRule)        {            if (fucusedNode == null)            {                checkNodeRule();                return null;            }            return fucusedNode;        }        /// <summary>        /// 正对节点的检查逻辑        /// </summary>        /// <param name="fucusedNode">TreeListNode</param>        /// <param name="checkNodeRule">检查逻辑代码[委托]</param>        /// <returns>TreeListNode</returns>        public static TreeListNode Check(this TreeListNode fucusedNode, CheckNodeRule checkNodeRule)        {            if (fucusedNode != null)                return checkNodeRule(fucusedNode) == true ? fucusedNode : null;            return null;        }        /// <summary>        /// 水平滚动条        /// </summary>        /// <param name="tree">TreeList</param>        public static void HorzScroll(this TreeList tree)        {            if (tree == null)                throw new ArgumentNullException("tree");            tree.OptionsView.AutoWidth = false;            tree.BestFitColumns();            tree.HorzScrollVisibility = ScrollVisibility.Always;        }        /// <summary>        /// 为TreeList附加右键菜单        /// MouseUp(object sender, MouseEventArgs e)事件中调用        /// </summary>        /// <param name="tree">TreeList</param>        /// <param name="e">MouseEventArgs</param>        /// <param name="menu">PopupMenu</param>        /// <param name="attachMenuRule">AttachMenuRule</param>        public static void AttachMenu(this TreeList tree, MouseEventArgs e, PopupMenu menu, Func<TreeListNode, bool> attachMenuRule)        {            if (tree == null)                throw new ArgumentNullException("tree");            if (menu == null)                throw new ArgumentNullException("menu");            if (e.Button == MouseButtons.Right && Control.ModifierKeys == Keys.None && tree.State == TreeListState.Regular)            {                Point _point = new Point(Cursor.Position.X, Cursor.Position.Y);                TreeListHitInfo _hitInfo = tree.CalcHitInfo(e.Location);                if (_hitInfo.HitInfoType == HitInfoType.Cell)                    tree.SetFocusedNode(_hitInfo.Node);                if (attachMenuRule(tree.FocusedNode))                    menu.ShowPopup(_point);            }        }        /// <summary>        /// 设置父节点的状态AfterCheckNode(object sender, NodeEventArgs e)        /// </summary>        /// <param name="node"></param>        /// <param name="check"></param>        public static void ProcessNodeCheckState(this TreeListNode node, CheckState check)        {            if (node == null)                throw new ArgumentNullException("node");            SetCheckedChildNodes(node, check);            SetCheckedParentNodes(node, check);        }        /// <summary>        /// 设置子节点CheckState        /// </summary>        /// <param name="node"></param>        /// <param name="check"></param>        private static void SetCheckedChildNodes(TreeListNode node, CheckState check)        {            if (node != null)            {                node.LoopTreeNodes((TreeListNode _node) =>                {                    _node.CheckState = check;                });            }        }        /// <summary>        /// 设置父节点CheckState        /// </summary>        /// <param name="node"></param>        /// <param name="check"></param>        private static void SetCheckedParentNodes(TreeListNode node, CheckState check)        {            if (node.ParentNode != null)            {                bool _checkStatus = false;                CheckState _nodeState;                node.LoopTreeNodes_Break((TreeListNode _node) =>                {                    _nodeState = _node.CheckState;                    if (!check.Equals(_nodeState))                    {                        _checkStatus = !_checkStatus;                        return false;//跳出循环                    }                    return true;//继续循环                });                node.ParentNode.CheckState = _checkStatus ? CheckState.Indeterminate : check;                SetCheckedParentNodes(node.ParentNode, check);            }        }        /// <summary>        /// 根据CheckState获取TreeListNode        /// </summary>        /// <param name="tree">TreeList</param>        /// <param name="state">CheckState</param>        /// <param name="GetNodesByStateRule">返回True的时候继续</param>        /// <returns>TreeListNode集合</returns>        public static List<TreeListNode> GetNodesByState(this TreeList tree, CheckState state, Func<TreeListNode, bool> GetNodesByStateRule)        {            if (tree == null)                throw new ArgumentNullException("tree");            List<TreeListNode> _checkNodes = new List<TreeListNode>();            tree.LoopTree((TreeListNode node) =>            {                if (GetNodesByStateRule(node))                {                    if (node.CheckState == state)                        _checkNodes.Add(node);                }            });            return _checkNodes;        }    }}