using System;
using System.Drawing;
using System.Windows.Forms;

namespace DataTableParsingEngine
{
    public class TableGroupParser
    {
        /// <summary>
        /// Paints rows according to their RowAttribute and detects whether or not they are part of a group.
        /// This function offers a faster method of determining all of this by starting at the row index that 
        /// fired the row leave even. As opposed to the PaintRowGroups function which spins through all the 
        /// DataGridView's rows.
        /// </summary>
        /// <param name="table">The DataGridView to parse.</param>
        /// <param name="startingIndex">The starting index (the row that fired the RowLeave event)</param>
        /// <param name="fullScan">True to force a full scan of all rows beginning at the starting index.</param>
        public static bool PaintRowGroups(DataGridView table, int startingIndex, bool fullScan = false)
        {
            var parser = new RowParser();
            var isHeaderColumn = (int) SalesTableColumns.IsHeaderRow;
            var isMemberColumn = (int) SalesTableColumns.IsMemberRow;
            var isDirtyColumn = (int) SalesTableColumns.IsDirty;
            var updatesOccured = false;
            if (table.ColumnCount < Enum.GetNames(typeof(SalesTableColumns)).Length)
            {
                isHeaderColumn = (int) InventoryTableColumns.IsHeaderRow;
                isMemberColumn = (int) InventoryTableColumns.IsMemberRow;
                isDirtyColumn = (int) InventoryTableColumns.IsDirty;
            }
            //Spin through the dataGridView rows starting at the row that fired the event.
            for (var i = startingIndex; i < (table.RowCount - 1); i++)
            {
                //Get the status of the current row.
                var currentRowAttribute = parser.GetRowAttribute(table.Rows[i]);
                //Get the previous row's status.
                var previousRow = RowParser.RowAttribute.UnAssigned;
                if (i > 0)
                {
                    previousRow = parser.GetRowAttribute(table.Rows[i - 1]);
                }
                //Get the next row's attribute.
                var nextRow = RowParser.RowAttribute.UnAssigned;
                if ((i + 1) < table.RowCount)
                {
                    nextRow = parser.GetRowAttribute(table.Rows[i + 1]);
                }
                //If current row is a header row...
                if (currentRowAttribute == RowParser.RowAttribute.HeaderRow)
                {
                    //...and the current row is index zero or the previous row is a header row
                    //then clear color coding from both.
                    if (previousRow == RowParser.RowAttribute.HeaderRow)
                    {
                        //Check the previous row's attributes to see if it needs to be marked for updating.
                        if ((bool) table.Rows[i - 1].Cells[isHeaderColumn].EditedFormattedValue ||
                            (bool) table.Rows[i - 1].Cells[isMemberColumn].EditedFormattedValue)
                        {
                            //The previous row had some attributes set, so mark the previous row for updating.
                            table.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                            updatesOccured = true;
                            table.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            table.Rows[i - 1].DefaultCellStyle.BackColor = default(Color);
                        }
                        //Clear the previous row of its attributes.
                        table.Rows[i - 1].Cells[isHeaderColumn].Value = false;
                        table.Rows[i - 1].Cells[isMemberColumn].Value = false;
                        //This condition means the user changed the members of a group, so the old header row needs to be updated in the database.
                        //Check the next row to see if its a member row before declaring the current row a header row.
                        if (nextRow == RowParser.RowAttribute.MemberRow)
                        {
                            if (!(bool)table.Rows[i].Cells[isHeaderColumn].EditedFormattedValue || 
                                (bool) table.Rows[i].Cells[isMemberColumn].EditedFormattedValue)
                            {
                                //The current row had some attributes set, so mark the previous row for updating.
                                table.Rows[i].Cells[isDirtyColumn].Value = true;
                                updatesOccured = true;
                                table.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                                table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                            }
                            //Set the current row as a header row.
                            table.Rows[i].Cells[isHeaderColumn].Value = true;
                            table.Rows[i].Cells[isMemberColumn].Value = false;
                            table.Rows[i].DefaultCellStyle.BackColor = TableColors.HeaderRow;
                            //Mark the next row as a member row.
                            if ((bool) table.Rows[i + 1].Cells[isHeaderColumn].EditedFormattedValue || 
                                !(bool)table.Rows[i + 1].Cells[isMemberColumn].EditedFormattedValue)
                            {
                                //The next row had some attributes set, so mark the previous row for updating.
                                table.Rows[i + 1].Cells[isDirtyColumn].Value = true;
                                updatesOccured = true;
                                table.Rows[i + 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                                table.Rows[i + 1].DefaultCellStyle.BackColor = default(Color);
                            }

                            table.Rows[i + 1].Cells[isHeaderColumn].Value = false;
                            table.Rows[i + 1].Cells[isMemberColumn].Value = true;
                            table.Rows[i + 1].DefaultCellStyle.BackColor = TableColors.MemberRow;
                        }
                        else
                        {
                            //If the current row is not a member row then clear the current row of any attributes it may have.
                            if ((bool) table.Rows[i].Cells[isHeaderColumn].EditedFormattedValue ||
                                (bool) table.Rows[i].Cells[isMemberColumn].EditedFormattedValue)
                            {
                                //The current row had some attributes set, so mark the previous row for updating.
                                table.Rows[i].Cells[isDirtyColumn].Value = true;
                                updatesOccured = true;
                                table.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                                table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                            }
                            //Clear the current row's attributes.
                            table.Rows[i].Cells[isHeaderColumn].Value = false;
                            table.Rows[i].Cells[isMemberColumn].Value = false;
                            table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                            if (!fullScan) return updatesOccured;
                        }
                    }
                    else
                    {
                        //Else if check to see if the previous row exists.
                        if (previousRow == RowParser.RowAttribute.UnAssigned)
                        {
                            //This indicates that there is no previous row, so its safe to assume that 
                            //we can simply continue on to the next row.
                            continue;
                        }
                        if (nextRow == RowParser.RowAttribute.MemberRow)
                        {
                            continue;
                        }
                        //If the current row is not a member row then clear the current row of any attributes it may have.
                        if ((bool)table.Rows[i].Cells[isHeaderColumn].EditedFormattedValue ||
                            (bool)table.Rows[i].Cells[isMemberColumn].EditedFormattedValue)
                        {
                            //The current row had some attributes set, so mark the previous row for updating.
                            table.Rows[i].Cells[isDirtyColumn].Value = true;
                            updatesOccured = true;
                            table.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        }
                        //Clear the current row's attributes.
                        table.Rows[i].Cells[isHeaderColumn].Value = false;
                        table.Rows[i].Cells[isMemberColumn].Value = false;
                        table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        if(!fullScan) return updatesOccured;
                    }
                }
                if (currentRowAttribute == RowParser.RowAttribute.MemberRow)
                {
                    //Check to see if the previous row is a header row.
                    if (previousRow == RowParser.RowAttribute.HeaderRow)
                    {
                        //Set the previous row as a header.
                        if (!(bool)table.Rows[i - 1].Cells[isHeaderColumn].EditedFormattedValue ||
                            (bool)table.Rows[i - 1].Cells[isMemberColumn].EditedFormattedValue)
                        {
                            //The current row had some attributes set, so mark the current row for updating.
                            table.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                            updatesOccured = true;
                            table.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            table.Rows[i - 1].DefaultCellStyle.BackColor = default(Color);
                        }
                        table.Rows[i - 1].Cells[isHeaderColumn].Value = true;
                        table.Rows[i - 1].Cells[isMemberColumn].Value = false;
                        table.Rows[i - 1].DefaultCellStyle.BackColor = TableColors.HeaderRow;
                        //Mark current row as member row.
                        if ((bool)table.Rows[i].Cells[isHeaderColumn].EditedFormattedValue || 
                            !(bool)table.Rows[i].Cells[isMemberColumn].EditedFormattedValue)
                        {
                            //The current row had some attributes set, so mark the current row for updating.
                            table.Rows[i].Cells[isDirtyColumn].Value = true;
                            updatesOccured = true;
                            table.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        }
                        table.Rows[i].Cells[isHeaderColumn].Value = false;
                        table.Rows[i].Cells[isMemberColumn].Value = true;
                        table.Rows[i].DefaultCellStyle.BackColor = TableColors.MemberRow;
                    }
                    else if (previousRow == RowParser.RowAttribute.MemberRow)
                    {
                        //Check to see if the previous row is set as a member row.
                        if ((bool) table.Rows[i - 1].Cells[isMemberColumn].EditedFormattedValue)
                        {
                            //Assume that the current row is part of the group.
                            if ((bool) table.Rows[i].Cells[isHeaderColumn].EditedFormattedValue ||
                                !(bool) table.Rows[i].Cells[isMemberColumn].EditedFormattedValue)
                            {
                                //The current row had some attributes set, so mark the current row for updating.
                                table.Rows[i].Cells[isDirtyColumn].Value = true;
                                updatesOccured = true;
                                table.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                                table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                            }
                            table.Rows[i].Cells[isHeaderColumn].Value = false;
                            table.Rows[i].Cells[isMemberColumn].Value = true;
                            table.Rows[i].DefaultCellStyle.BackColor = TableColors.MemberRow;
                        }
                        else
                        {
                            if ((bool)table.Rows[i].Cells[isHeaderColumn].EditedFormattedValue ||
                                (bool)table.Rows[i].Cells[isMemberColumn].EditedFormattedValue)
                            {
                                //The current row had some attributes set, so mark the current row for updating.
                                table.Rows[i].Cells[isDirtyColumn].Value = true;
                                updatesOccured = true;
                                table.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                                table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                            }
                            table.Rows[i].Cells[isHeaderColumn].Value = false;
                            table.Rows[i].Cells[isMemberColumn].Value = false;
                            table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        }
                    }
                    else
                    {
                        if ((bool)table.Rows[i].Cells[isHeaderColumn].EditedFormattedValue ||
                            (bool)table.Rows[i].Cells[isMemberColumn].EditedFormattedValue)
                        {
                            //The current row had some attributes set, so mark the current row for updating.
                            table.Rows[i].Cells[isDirtyColumn].Value = true;
                            updatesOccured = true;
                            table.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            table.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        }
                        table.Rows[i].Cells[isHeaderColumn].Value = false;
                        table.Rows[i].Cells[isMemberColumn].Value = false;
                    }
                }
            }

            return updatesOccured;
        }

        public static void PaintInventoryRowGroups(int startingIndex, DataGridView inventoryDataGridView,
            DataGridView masterDataGridView)
        {
            var isHeaderColumn = (int)InventoryTableColumns.IsHeaderRow;
            var isMemberColumn = (int)InventoryTableColumns.IsMemberRow;
            var isDirtyColumn = (int)InventoryTableColumns.IsDirty;
            var masterHeaderColumn = (int)SalesTableColumns.IsHeaderRow;
            var masterMemberColumn = (int)SalesTableColumns.IsMemberRow;

            var parser = new RowParser();
            //Spin through the dataGridView rows starting at the row that fired the event.
            for (var i = startingIndex; i < (inventoryDataGridView.RowCount - 1); i++)
            {
                //Get the status of the current row.
                var rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i]);
                //IF the current row is a header row...
                if (rowStatus == RowParser.RowAttribute.HeaderRow)
                {
                    //Then check to see if the next row is a row header.
                    rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i + 1]);
                    //IF so, color code this row as White, since it is not a true group header.
                    if (rowStatus == RowParser.RowAttribute.HeaderRow)
                    {
                        //Clear the current row of its attributes.
                        inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = false;
                        inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = false;
                        inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        return;
                    }
                    //IF the current row is not the first row in the data grid (index zero)...
                    if (i > 0)
                    {
                        //The start by checking the previous row's status.
                        rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i - 1]);
                        //IF the previous row is a header row AND has color coding saying it is a group header, then clear the previous row's color and apply it to this row (i).
                        if (rowStatus == RowParser.RowAttribute.HeaderRow && (bool)masterDataGridView.Rows[i - 1].Cells[masterHeaderColumn].EditedFormattedValue)
                        {
                            //Clear the previous row of its attributes.
                            inventoryDataGridView.Rows[i - 1].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i - 1].Cells[isMemberColumn].Value = false;
                            //This condition means the user changed the members of a group, so the old header row needs to be updated in the database.
                            inventoryDataGridView.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                            inventoryDataGridView.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            inventoryDataGridView.Rows[i - 1].DefaultCellStyle.BackColor = default(Color);
                            //Check the next row to see if its a member row before declaring the current row a header row.
                            rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i + 1]);
                            if (rowStatus != RowParser.RowAttribute.MemberRow)
                            {
                                //Clear the coloring from the current row.
                                inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = true;
                                inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = false;
                                inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = default(Color);
                                return;
                            }
                            //Set the current row as a header row.
                            inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = true;
                            inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = false;
                            inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = TableColors.HeaderRow;
                            return;
                        }
                        //IF the previous row is a header row OR if the previous row is index zero AND a member row, clear its coloring.
                        if (rowStatus == RowParser.RowAttribute.HeaderRow || rowStatus == RowParser.RowAttribute.MemberRow && (i - 1) == 0)
                        {
                            //Set the current row and check for changes.
                            if ((bool)masterDataGridView.Rows[i - 1].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            //Clear the previous row of its attributes.
                            inventoryDataGridView.Rows[i - 1].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i - 1].Cells[isMemberColumn].Value = false;
                            inventoryDataGridView.Rows[i - 1].DefaultCellStyle.BackColor = default(Color);
                        }
                        //Then check to see if the next row is a member row
                        rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i + 1]);
                        if (rowStatus == RowParser.RowAttribute.MemberRow)
                        {
                            //Set the current row and check for changes.
                            if (!(bool)masterDataGridView.Rows[i].Cells[masterHeaderColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = true;
                            inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = false;
                            inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = TableColors.HeaderRow;
                            //Set the next row as a member row.
                            if (!(bool)masterDataGridView.Rows[i + 1].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i + 1].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i + 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            inventoryDataGridView.Rows[i + 1].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i + 1].Cells[isMemberColumn].Value = true;
                            inventoryDataGridView.Rows[i + 1].DefaultCellStyle.BackColor = TableColors.MemberRow;
                        }
                    }
                    else
                    {
                        //Then check to see if the next row is a member row
                        rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i + 1]);
                        if (rowStatus != RowParser.RowAttribute.MemberRow) continue;
                        //Set the current row and check for changes.
                        if (!(bool)masterDataGridView.Rows[i].Cells[masterHeaderColumn].EditedFormattedValue)
                        {
                            inventoryDataGridView.Rows[i].Cells[isDirtyColumn].Value = true;
                            inventoryDataGridView.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                        }
                        inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = true;
                        inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = false;
                        inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = TableColors.MemberRow;
                        //Set the next row as a member row.
                        if (!(bool)masterDataGridView.Rows[i + 1].Cells[masterMemberColumn].EditedFormattedValue)
                        {
                            inventoryDataGridView.Rows[i + 1].Cells[isDirtyColumn].Value = true;
                            inventoryDataGridView.Rows[i + 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                        }
                        inventoryDataGridView.Rows[i + 1].Cells[isHeaderColumn].Value = false;
                        inventoryDataGridView.Rows[i + 1].Cells[isMemberColumn].Value = true;
                        inventoryDataGridView.Rows[i + 1].DefaultCellStyle.BackColor = TableColors.MemberRow;
                    }
                }
                else if (rowStatus == RowParser.RowAttribute.MemberRow)
                {
                    if (i > 0)
                    {
                        //Check the previous row.
                        rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i - 1]);
                        //IF the previous row is a member row AND is the first row in the data grid, then remove the coloring from it and the current row (i).
                        if (rowStatus == RowParser.RowAttribute.MemberRow && (i - 1) == 0)
                        {
                            //Clear the previous row of its attributes.
                            if ((bool)masterDataGridView.Rows[i - 1].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                //And mark it as dirty if those attributes have been set for whatever reason.
                                inventoryDataGridView.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            inventoryDataGridView.Rows[i - 1].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i - 1].Cells[isMemberColumn].Value = false;
                            inventoryDataGridView.Rows[i - 1].DefaultCellStyle.BackColor = default(Color);
                            //Check for changes in the current row.
                            if ((bool)masterDataGridView.Rows[i].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            //Clear the current row of its attributes.                           
                            inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = false;
                            inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        }
                        //IF the previous row is a member row AND it also has color coding suggesting that it is a member of a group, then add the current row (i) as well.
                        else if (rowStatus == RowParser.RowAttribute.MemberRow && (bool)masterDataGridView.Rows[i - 1].Cells[masterMemberColumn].EditedFormattedValue)
                        {
                            //Check for changes in the current row.
                            if (!(bool)masterDataGridView.Rows[i].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            //Set the current row as a member row.
                            inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = true;
                            inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = TableColors.MemberRow;
                        }
                        //IF the previous row is simply a member row with no coloring at all, then remove the coloring from the current row (i).
                        else if (rowStatus == RowParser.RowAttribute.MemberRow || rowStatus == RowParser.RowAttribute.AdSpecialRow)
                        {
                            //Check for changes in the current row.
                            if ((bool)masterDataGridView.Rows[i].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            //Clear the current row of its attributes.
                            inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = false;
                            inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = default(Color);
                        }
                        //IF the previous row is a header row, then color it as a group header and color the current row as a member of said group.
                        else if (rowStatus == RowParser.RowAttribute.HeaderRow && !(bool)masterDataGridView.Rows[i - 1].Cells[masterHeaderColumn].EditedFormattedValue)
                        {
                            //Set the previous row as a header row.
                            if (!(bool)masterDataGridView.Rows[i - 1].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            inventoryDataGridView.Rows[i - 1].Cells[isHeaderColumn].Value = true;
                            inventoryDataGridView.Rows[i - 1].Cells[isMemberColumn].Value = false;
                            inventoryDataGridView.Rows[i - 1].DefaultCellStyle.BackColor = TableColors.HeaderRow;
                            //This condition means the user created a group so the newly made header row will need to be updated in the database as well.
                            inventoryDataGridView.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                            inventoryDataGridView.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            //Check for changes in the current row.
                            if (!(bool)masterDataGridView.Rows[i].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            //Set the current row as a member row.
                            inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = true;
                            inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = TableColors.MemberRow;
                        }
                        else if (rowStatus == RowParser.RowAttribute.HeaderRow)
                        {
                            //Check for changes in the current row.
                            if (!(bool)masterDataGridView.Rows[i].Cells[masterMemberColumn].EditedFormattedValue)
                            {
                                inventoryDataGridView.Rows[i].Cells[isDirtyColumn].Value = true;
                                inventoryDataGridView.Rows[i].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                            }
                            //Set the current row as a member row.
                            inventoryDataGridView.Rows[i].Cells[isHeaderColumn].Value = false;
                            inventoryDataGridView.Rows[i].Cells[isMemberColumn].Value = true;
                            inventoryDataGridView.Rows[i].DefaultCellStyle.BackColor = TableColors.MemberRow;
                        }
                        //IF the previous row is incomplete, then call the stable PaintRowGroups function.
                        else if (rowStatus == RowParser.RowAttribute.IncompleteRow)
                        {
                            //PaintRowGroups(dataGridView);
                        }
                    }
                    //ELSE the current row is the first row in the data grid, therefore it can't be a member row so remove all coloring.
                    else
                    {
                        //Clear the current row of its attributes.
                        if (!(bool)masterDataGridView.Rows[0].Cells[masterMemberColumn].EditedFormattedValue)
                        {
                            //If the row thinks that it's a member row then set it to dirty so the changes can be shown.
                            inventoryDataGridView.Rows[0].Cells[isDirtyColumn].Value = true;
                            inventoryDataGridView.Rows[0].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                        }
                        inventoryDataGridView.Rows[0].Cells[isHeaderColumn].Value = false;
                        inventoryDataGridView.Rows[0].Cells[isMemberColumn].Value = false;
                        inventoryDataGridView.Rows[0].DefaultCellStyle.BackColor = default(Color);
                    }
                }
                else if (rowStatus == RowParser.RowAttribute.AdSpecialRow)
                {
                    if (i == 0) return;
                    inventoryDataGridView.Rows[startingIndex].DefaultCellStyle.BackColor = TableColors.AdSpecial;
                    //Get the previous row's attribute.
                    rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i - 1]);
                    if (rowStatus == RowParser.RowAttribute.HeaderRow)
                    {
                        //Check to see if the previous row sees itself as a header row, if so mark it dirty.
                        if ((bool)masterDataGridView.Rows[i - 1].Cells[masterHeaderColumn].EditedFormattedValue)
                        {
                            inventoryDataGridView.Rows[i - 1].Cells[isDirtyColumn].Value = true;
                            inventoryDataGridView.Rows[i - 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                        }
                        //Clear its color coding.
                        inventoryDataGridView.Rows[i - 1].Cells[isHeaderColumn].Value = false;
                        inventoryDataGridView.Rows[i - 1].Cells[isMemberColumn].Value = false;
                        inventoryDataGridView.Rows[i - 1].DefaultCellStyle.BackColor = default(Color);
                    }
                    //Next get the status of the next row.
                    rowStatus = parser.GetRowAttribute(masterDataGridView.Rows[i + 1]);
                    if (rowStatus == RowParser.RowAttribute.MemberRow)
                    {
                        //Check to see if the next row thinks it is a member row.
                        if (!(bool)masterDataGridView.Rows[i + 1].Cells[masterMemberColumn].EditedFormattedValue)
                        {
                            inventoryDataGridView.Rows[i + 1].Cells[isDirtyColumn].Value = true;
                            inventoryDataGridView.Rows[i + 1].HeaderCell.Style.BackColor = TableColors.PendingEdit;
                        }
                        //Clear its color coding.
                        inventoryDataGridView.Rows[i + 1].Cells[isMemberColumn].Value = false;
                        inventoryDataGridView.Rows[i + 1].Cells[isHeaderColumn].Value = false;
                        inventoryDataGridView.Rows[i + 1].DefaultCellStyle.BackColor = default(Color);
                    }
                }
            }

        }

        public enum SalesTableColumns
        {
            Id = 0,
            AdItem = 1,
            Sold = 2,
            SalePrice = 3,
            TotalSales = 4,
            Cost = 5,
            ProfitReturn = 6,
            TotalProfitReturn = 7,
            IsHeaderRow = 8,
            IsMemberRow = 9,
            IsDirty = 10
        }

        public enum InventoryTableColumns
        {
            Id = 0,
            AdItem = 1,
            BeginningInventory = 2,
            Recieved = 3,
            Total = 4,
            EndingInventory = 5,
            IsHeaderRow = 6,
            IsMemberRow = 7,
            IsDirty = 8
        }

        public enum InvoiceTableColumns
        {
            Id = 0,
            InvoiceDate = 1,
            Supplier = 2,
            InvoiceNumber = 3,
            InvoiceNetAmountAtCost = 4,
            InvoiceNote = 5,
            IsDirty = 6
        }
    }
}