using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using DevComponents.DotNetBar.Controls;
using NaiBa.Util.Extension;

namespace TemuKJD.UserComponent
{
    public class DataGridViewEx : DataGridView
    {
        Form parentForm = null;
        public DataGridViewEx()
        {
            BackgroundColor = Color.White;
            AlternatingRowsDefaultCellStyle.BackColor = Color.FromArgb(249, 249, 249);
            RowPostPaint += DataGridViewEx_RowPostPaint;
            this.CellContentClick += DataGridViewEx_CellContentClick;

            this.SetStyle(
                ControlStyles.OptimizedDoubleBuffer |
                ControlStyles.EnableNotifyMessage |
                ControlStyles.ResizeRedraw |
                ControlStyles.AllPaintingInWmPaint,
                true);

            Task.Run(() =>
            {
                for (int i = 0; i < 50; i++)
                {
                    System.Threading.Thread.Sleep(100);
                    parentForm = FindForm();
                    if (parentForm != null)
                    {
                        parentForm.KeyPreview = true;
                        parentForm.KeyDown += ParentForm_KeyDown;
                        parentForm.KeyUp += ParentForm_KeyUp;
                        break;
                    }
                }
            });
        }

        private void DataGridViewEx_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex < 0)
                return;

            var chkCol = this.Columns.Cast<DataGridViewColumn>().FirstOrDefault(c => c is DataGridViewCheckBoxColumn);
            if (chkCol == null)
                return;
            var colIndex = chkCol.Index;
            if (colIndex < 0 || e.ColumnIndex != colIndex)
                return;

            rowIndex1 = rowIndex2;
            rowIndex2 = e.RowIndex;
            if (IsShiftDown && MultiSelectCheckBox)
            {
                if (rowIndex1 > -1 && rowIndex2 > -1)
                {
                    try
                    {
                        if (rowIndex1 > rowIndex2)
                        {
                            for (int i = rowIndex2; i <= rowIndex1 - 1; i++)
                            {
                                this.Rows[i].Cells[colIndex].Value = this.Rows[rowIndex1].Cells[colIndex].Value;
                            }
                            this.Rows[rowIndex1].Cells[rowIndex1].Value = !this.Rows[rowIndex1].Cells[rowIndex2].Value.ParseToBool();
                        }
                        else
                        {
                            for (int i = rowIndex1; i <= rowIndex2 - 1; i++)
                            {
                                this.Rows[i].Cells[colIndex].Value = this.Rows[rowIndex1].Cells[colIndex].Value;
                            }
                            this.Rows[rowIndex1].Cells[rowIndex2].Value = !this.Rows[rowIndex1].Cells[rowIndex1].Value.ParseToBool();
                        }
                    }
                    catch
                    {
                    }
                    //rowIndex1 = -1;
                    //rowIndex2 = -1;
                }
            }
        }

        int rowIndex1 = -1;
        int rowIndex2 = -1;
        bool IsShiftDown = false;
        private void ParentForm_KeyDown(object sender, KeyEventArgs e)
        {
            switch (e.KeyCode)
            {
                case Keys.Shift:
                case Keys.ShiftKey:
                case Keys.LShiftKey:
                case Keys.RShiftKey:
                    IsShiftDown = true;
                    break;
            }
        }
        private void ParentForm_KeyUp(object sender, KeyEventArgs e)
        {
            switch (e.KeyCode)
            {
                case Keys.Shift:
                case Keys.ShiftKey:
                case Keys.LShiftKey:
                case Keys.RShiftKey:
                    IsShiftDown = false;
                    rowIndex1 = -1;
                    rowIndex2 = -1;
                    break;
            }
        }

        private Color _BorderColor = Color.FromArgb(63, 126, 255);
        /// <summary>
        /// 边框颜色
        /// </summary>
        [Description("边框颜色"), Category("UserProperty")]
        public Color BorderColor
        {
            get
            {
                return _BorderColor;
            }
            set
            {
                if (_BorderColor != value)
                {
                    _BorderColor = value;
                    this.Invalidate();
                }
            }
        }

        private bool autoRowNumber = true;
        /// <summary>
        /// 边框颜色
        /// </summary>
        [Description("自动行号"), Category("UserProperty")]
        public bool AutoRowNumber
        {
            get
            {
                return autoRowNumber;
            }
            set
            {
                if (autoRowNumber != value)
                {
                    autoRowNumber = value;
                    this.Invalidate();
                }
            }
        }


        /// <summary>
        /// 自动生成行号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DataGridViewEx_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            if (AutoRowNumber)
            {
                Rectangle rectangle = new Rectangle(e.RowBounds.Location.X, e.RowBounds.Location.Y, RowHeadersWidth - 4, e.RowBounds.Height);
                TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(), RowHeadersDefaultCellStyle.Font, rectangle, Color.DarkGray, TextFormatFlags.VerticalCenter | TextFormatFlags.Right);
            }
        }

        /// <summary>
        /// 绘制边框颜色
        /// </summary>
        /// <param name="e"></param>
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            e.Graphics.DrawRectangle(new Pen(this.BackgroundColor), new Rectangle(1, 1, this.Width - 2, this.Height - 2));
            e.Graphics.DrawRectangle(new Pen(this.BorderColor), new Rectangle(0, 0, this.Width - 1, this.Height - 1));
        }

        private bool multiSelectCheckBox = true;
        /// <summary>
        /// 选择框批量选中(使用Shift按键)
        /// </summary>
        [Description("选择框批量选中(Shift)"), Category("UserProperty")]
        public bool MultiSelectCheckBox
        {
            get
            {
                return multiSelectCheckBox;
            }
            set
            {
                if (multiSelectCheckBox != value)
                {
                    multiSelectCheckBox = value;
                    this.Invalidate();
                }
            }
        }
    }
}