using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.Drawing.Design;
using System.Windows.Forms.Design;
using System.Threading;
using System.Drawing;
using CommonLib;
using System.Text.RegularExpressions;
using Lskj.MyControl;

namespace Lskj.MyControl
{
    /// <summary>
    /// 自动搜索器
    /// </summary>
    public partial class AutoSearcherTreeView : TextBox
    {

        /// <summary>
        /// 控件所在的面板
        /// </summary>
        //public Control SearchControlPanel { get; set; }
        //-----------------------------------------------私有字段--------------
        //树视图控件
        private TreeViewEx FListVAuto;
        //记载上次的选中值
        private string StrOld = "";
        //窗体
        public FrmAutoSearchTreeView FrmAutoShowForm;
        //树节点绑定的值
        public string ValueMember;
        //树节点显示的值
        public string DisplayMember;

        /// <summary>
        /// 构造函数
        /// </summary>
        public AutoSearcherTreeView()
        {
            Init();
        }

        /// <summary>
        /// 初始化函数
        /// </summary>
        private void Init()
        {
            Text = "";
            FrmAutoShowForm = new FrmAutoSearchTreeView();
            FrmAutoShowForm.TreeView.GetTreeView.CheckBoxes=false;
            FListVAuto = FrmAutoShowForm.TreeView;
            this.KeyUp += new KeyEventHandler(onSelfKeyUp);
            this.Leave += new EventHandler(OnSelfLostFocus);
            this.Enter += new EventHandler(AutoSearcher_Enter);
            this.MouseDown += new MouseEventHandler(AutoSearcher_MouseDown);
            this.MouseUp += new MouseEventHandler(AutoSearcher_MouseUp);
            FListVAuto.MyAfterSelect += new TreeViewEventHandler(TreeViewClick);
        }

        private void AutoSearcher_MouseUp(object sender, MouseEventArgs e)
        {
            this.SelectAll();
        }


        /// <summary>
        /// 鼠标按下
        /// </summary>
        private void AutoSearcher_MouseDown(object sender, MouseEventArgs e)
        {
            //this.Text = "";// Text.Trim();
            StrOld = this.Text;
            FrmAutoShowForm.Show();
            this.Focus();
        }

         /// <summary>
        /// 输入控件失去焦点事件处理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnSelfLostFocus(object sender, EventArgs e)
        {
            if (FrmAutoShowForm.Visible && !FListVAuto.Focused)
            {
                FrmAutoShowForm.Hide();
            }
        }


        /// 输入框回车事件的处理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void onSelfKeyUp(object sender, KeyEventArgs e)
        {

            if (e.KeyValue == 13)
            {
                if (Text.Trim() == "")
                    OnTextChanged(null);
                if (FrmAutoShowForm.Visible)
                    this.Text = FListVAuto.GetTreeView.SelectedNode.Text;
                FrmAutoShowForm.Hide();
            }
            if (e.KeyValue == 27)
            {
                if (FrmAutoShowForm.Visible)
                    FrmAutoShowForm.Visible = false;
            }

        }

        /// <summary>
        /// 绑定树结构
        /// </summary>
        /// <param name="TabName"></param>
        /// <param name="treeView"></param>
        public void BindTree(DataTable data)
        {
            for (int i = 0; i < data.Rows.Count; i++)
            {
                DataRow dr = data.Rows[i];
                String tnKey = dr[ValueMember] + "";
                String tnStr = dr[DisplayMember] + "";
                DataColumnCollection dcc = data.Columns;
                String CodeNo = string.Empty;
                if (dcc.Count > 2)
                    CodeNo = dr[2].ToString();
                TreeNode[] tn = null;
                if (tnKey.Length >= 4)
                {
                    String pKey = tnKey.Substring(0, tnKey.Length - 2);
                    tn = FListVAuto.GetTreeView.Nodes.Find(pKey, true);
                    if (tn.Count() > 0)
                    {
                        TreeNode tNode = tn[0].Nodes.Add(tnKey, tnStr);
                        tNode.Tag = dr;
                    }
                }
                else
                {
                    TreeNode tNode = FListVAuto.GetTreeView.Nodes.Add(tnKey, tnStr);
                }
            }
        }

        /// <summary>
        /// 搜索节点递归
        /// </summary>
        public TreeNode FindNode(TreeNode tnParent, string strValue)
        {
            if (tnParent == null) return null;
            for (int i = 0; i < tnParent.Text.Length - strValue.Length + 1; i++)
            {
                if (tnParent.Text.Substring(i, strValue.Length) == strValue && (!tnParent.Checked))
                {
                    return tnParent;
                }
            }
            TreeNode tnRet = null;

            foreach (TreeNode tn in tnParent.Nodes)
            {
                tnRet = FindNode(tn, strValue);
                if (tnRet != null) break;
            }
            return tnRet;
        }


        /// <summary>
        /// 树点击事件
        /// </summary>
        private void TreeViewClick(object sender, TreeViewEventArgs e)
        {
            this.Text = e.Node.Text;
        }

        /// <summary>
        /// 输入内容变化处理过程
        /// </summary>
        /// <param name="e"></param>
        protected override void OnTextChanged(EventArgs e)
        {
            TreeNode tnRet = null;
            foreach (TreeNode tn in FListVAuto.GetTreeView.Nodes)
            {
                tnRet = FindNode(tn, this.Text);
                if (tnRet != null)
                {
                    tnRet.EnsureVisible();
                    FListVAuto.GetTreeView.Select();
                    FListVAuto.GetTreeView.SelectedNode = tnRet;
                    break;
                }
            }
            this.Focus();
            this.Select(Text.Length, 0);
            base.OnTextChanged(e);
        }

        /// <summary>
        /// 键入事件
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void AutoSearcher_Enter(object sender, EventArgs e)
        {
            //没数据也进行隐藏
            if (!string.IsNullOrEmpty(StrOld) && StrOld == this.Text || FListVAuto.GetTreeView.Nodes.Count==0)
            {
                FrmAutoShowForm.Hide();
                return;
            }
            StrOld = this.Text;
            SetFrmPosition(this, true);
            FrmAutoShowForm.Show();
        }

        /// <summary>
        /// 获取窗体
        /// </summary>
        /// <param name="ctr">The CTR.</param>
        /// <returns>Form.</returns>
        private Form GetForm(Control ctr)
        {
            if (ctr is Form)
            {
                return ctr as Form;
            }
            else
            {
                return GetForm(ctr.Parent);
            }
        }

        /// <summary>
        /// 在父窗体关闭的时候也关闭结果集窗体
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ParentFormClose(object sender, FormClosingEventArgs e)
        {
            if (e.CloseReason == CloseReason.UserClosing)
            {
                FrmAutoShowForm.Hide();
                if (FrmAutoShowForm.Parent != null)
                {
                    (FrmAutoShowForm.Parent as Form).FormClosing -= new FormClosingEventHandler(ParentFormClose);
                }
            }
        }



        /// <summary>
        /// 设置窗体位置
        /// </summary>
        /// <param name="OwnerCtrl"></param>
        /// <param name="bParentSet"></param>
        private void SetFrmPosition(Control OwnerCtrl, bool bParentSet)
        {
            Form form = null;
            Control F;
            int iTop;
            int iLeft;
            int iWidth;
            form = GetForm(OwnerCtrl.Parent);
            FrmAutoShowForm.TopLevel = false;
            FrmAutoShowForm.Parent = form;
            for (int k = 0; k < 20; k++)
                FrmAutoShowForm.BringToFront();
            F = OwnerCtrl.Parent;
            iTop = OwnerCtrl.Top + OwnerCtrl.Height;
            iLeft = OwnerCtrl.Left;
            while (F != form)
            {
                iTop = iTop + F.Top;
                iLeft = iLeft + F.Left;
                F = F.Parent;
            }
            if (iTop + this.Height + FrmAutoShowForm.Height > F.Height)
            {
                if (iTop - this.Height > F.Height - iTop)
                {
                    if (FrmAutoShowForm.Height > iTop - OwnerCtrl.Height)
                    {
                        FrmAutoShowForm.Height = iTop - OwnerCtrl.Height;
                        iTop = 0;
                    }
                    else
                        iTop = iTop - this.Height - FrmAutoShowForm.Height;
                }
                else
                    FrmAutoShowForm.Height = F.Height - iTop - 30;
            }
            if (iLeft + FrmAutoShowForm.Width > F.Width)
            {
                if (iLeft + this.Width > F.Width - iLeft)
                {
                    if (FrmAutoShowForm.Width > iLeft + OwnerCtrl.Width)
                    {
                        FrmAutoShowForm.Width = iLeft + OwnerCtrl.Width;
                        iLeft = 0;
                    }
                    else
                        iLeft = iLeft + OwnerCtrl.Width - FrmAutoShowForm.Width;
                }
                else
                    FrmAutoShowForm.Width = F.Width - iLeft - 30;
            }
            FrmAutoShowForm.Left = iLeft;
            FrmAutoShowForm.Top = iTop;
        }
    }
}