using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.IO;
using System.Windows;

namespace Lskj.MyControl
{
    public partial class MySearchDgv : Myeditdgv
    {
        /// <summary>
        /// 搜索框数据列表
        /// </summary> 
        public DataGridView dgv;

        /// <summary>
        /// 数据面板
        /// </summary>
        private Panel dgvPanel;

        /// <summary>
        /// 组件父容器
        /// </summary>
        private IContainer myContainer;
        public int selectRow;
        public int isshowImage = 0;

        public MySearchDgv()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 选择确认事件接口
        /// </summary>
        private KeyEventHandler cellkeydown;
        public KeyEventHandler CellKeyDown
        {
            get { return cellkeydown; }
            set { cellkeydown = value; }
        }

        /// <summary>
        /// 选择确认事件接口
        /// </summary>
        private EventHandler accept;
        public EventHandler Accept
        {
            get { return accept; }
            set { accept = value; }
        }

        public MySearchDgv(IContainer container)
        {
            container.Add(this);

            InitializeComponent();

            myContainer = container;
            container.Add(this);

            this.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
            this.MultiSelect = false;

            //数据列表初始化
            this.dgv = new DataGridView();
            this.dgv.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
            this.dgv.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
            this.dgv.EditMode = DataGridViewEditMode.EditProgrammatically;
            this.dgv.Dock = DockStyle.Fill;
            this.dgv.MultiSelect = false;
            this.dgv.AllowUserToResizeColumns = true;
            this.dgv.AllowUserToResizeRows = false;
            this.dgv.RowHeadersVisible = false;
            this.dgv.AllowUserToAddRows = false;
            this.dgv.DataSource = null;
            this.dgv.Leave += new EventHandler(VasunSearchDgv_Leave);
            this.dgv.CellDoubleClick += new DataGridViewCellEventHandler(Dgv_RowDoubleClick);
            this.dgv.BackgroundColor = Color.White;

            //数据面板初始化
            this.dgvPanel = new Panel();
            this.dgvPanel.Visible = false;
            this.dgvPanel.Size = new System.Drawing.Size(0, 0);

            //添加数据列表
            this.dgvPanel.Controls.Add(this.dgv);
        }

        private void VasunSearchDgv_Leave(object sender, EventArgs e)
        {
            if (!this.dgv.Focused && !this.dgvPanel.Focused)
            {
                this.closeImage();
            }
        }

        private void Dgv_RowDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            if (this.Accept != null)
            {
                this.Accept.Invoke(sender, e);
            }
        }

        //显示联想框
        private void showImage()
        {
            selectRow = this.CurrentCell.RowIndex;
            int x = 0, y = 0;
            Rectangle rt = this.GetCellDisplayRectangle(this.CurrentCell.ColumnIndex, this.CurrentCell.RowIndex, false);//获取当前单元格的矩形框
            Control Ctrol = this;
            this.dgvPanel.Size = new System.Drawing.Size(this.Width * (this.ColumnCount - 1) / this.ColumnCount - 10, this.CurrentRow.Height * 6);
            if (this.Height - rt.Y >= this.CurrentRow.Height * 6)
            {
                x += Ctrol.Location.X + this.Width / this.ColumnCount;
                y += rt.Y + this.CurrentRow.Height;
            }
            else
            {
                x += Ctrol.Location.X + this.Width / this.ColumnCount;
                y += rt.Y - 6 * this.CurrentRow.Height;
            }
            //显示
            this.dgvPanel.Visible = true;
            this.dgvPanel.Location = new System.Drawing.Point(x, y);
            Ctrol.Controls.Add(this.dgvPanel);
            this.dgvPanel.BringToFront();
            isshowImage = 1;
        }

        /// <summary>
        /// 关闭联想框
        /// </summary>
        private void closeImage()
        {
            if (dgvPanel != null)
            {
                this.dgvPanel.Visible = false;
            }
            isshowImage = 0;
        }

        //获取数据项
        public Object getDgvSelectedData(int colum)
        {
            Object o = new Object();
            if (this.dgv.SelectedRows.Count > 0)
            {
                o = this.dgv[colum, this.dgv.SelectedRows[0].Index].Value;
                return o;
            }
            else return Text;
        }

        //重新绑定
        public void reBing(DataTable dt)
        {
            this.dgv.DataSource = dt;
        }

        private void SearchBar_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
        {
            if (CurrentCell.ColumnIndex == 0 && CurrentCell.Value.ToString() == "")
                showImage();
            else closeImage();
        }

        private void VasunSearchDgv_CellBeginEdit(object sender, System.Windows.Forms.DataGridViewCellCancelEventArgs e)
        {
            if (CurrentCell.ColumnIndex == 0 && CurrentCell.Value.ToString() == "")
                showImage();
            else closeImage();
        }

        private void VasunSearchDgv_CurrentCellDirtyStateChanged(object sender, EventArgs e)
        {
            if (this.IsCurrentCellDirty)
            {
                this.CommitEdit(DataGridViewDataErrorContexts.Commit);
            }
        }

        private void VasunSearchDgv_CellValueChanged(object sender, System.Windows.Forms.DataGridViewCellEventArgs e)
        {
            if (this.CurrentCell.ColumnIndex == 0)
            {
                this.showImage();
            }
        }

        protected override bool ProcessCmdKey(ref Message msg, Keys KeyData)
        {
            if (KeyData == Keys.Down)
            {
                int nowRowIndex;
                if (this.dgv.Rows.Count > 0)
                {
                    nowRowIndex = this.dgv.SelectedRows[0].Index;
                    if (this.dgv.Rows.Count - 1 > nowRowIndex)
                    {
                        this.dgv.Rows[nowRowIndex + 1].Selected = true;
                        this.dgv.CurrentCell = this.dgv.Rows[nowRowIndex + 1].Cells[0];
                    }
                    this.dgv.FirstDisplayedScrollingRowIndex = nowRowIndex;
                }
                return true;
            }
            else if (KeyData == Keys.Up)
            {
                int nowRowIndex;
                if (this.dgv.Rows.Count > 0)
                {
                    nowRowIndex = this.dgv.SelectedRows[0].Index;
                    if (nowRowIndex > 0)
                    {
                        this.dgv.Rows[nowRowIndex - 1].Selected = true;
                        this.dgv.CurrentCell = this.dgv.Rows[nowRowIndex - 1].Cells[0];
                    }
                    try
                    {
                        this.dgv.FirstDisplayedScrollingRowIndex = nowRowIndex - 1;
                    }
                    catch { }
                }
                return true;
            }
            else if (KeyData == Keys.Enter)
            {
                if (this.isshowImage == 1)
                {
                    this.CellKeyDown(this, new KeyEventArgs(KeyData));
                    this.closeImage();
                    return true;
                }
                else if (this.CurrentCell.RowIndex == this.RowCount - 1 && this.CurrentCell.ColumnIndex == this.ColumnCount - 1)
                {
                    DataTable table = (DataTable)this.DataSource;
                    DataRow dr = table.NewRow();
                    table.Rows.Add(dr);
                    this.CurrentCell = this.Rows[this.RowCount - 1].Cells[0];
                    this.BeginEdit(true);
                    return true;
                }
            }
            else if (KeyData == Keys.Escape)
            {
                this.closeImage();
                return true;
            }
            return base.ProcessCmdKey(ref msg, KeyData);
        }

        private void VasunSearchDgv_RowLeave(object sender, DataGridViewCellEventArgs e)
        {
            if (this.CurrentRow.Index == this.RowCount - 2)
            {
                DataTable table = (DataTable)this.DataSource;
                DataRow dr = table.NewRow();
                table.Rows.Add(dr);
            }
        }
    }
}