using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;

namespace TBF
{
    /// <summary>
    /// Data types and orientation of the table layout panel attached data.
    /// </summary>
    public enum Arrangement
    {
        RowOfIntegers,
        RowOfDoubles,
        RowOfStrings,
        ColumnOfIntegers,
        ColumnOfDoubles,
        ColumnOfStrings,
    }

    /// <summary>
    /// This class represents TextBox controls and data modified by them
    /// that are attached to (=displayed inside) a TableLayoutPanel control.
    /// </summary>
    public class AttachedTextBoxes
    {
        ///
        /// Private fields
        ///
        int count;              /// Number of attached TextBoxes / cells
        Arrangement arngmnt;    /// Type of attachemnt (see above)
        bool isRow;             /// true if it is a row
        TextBox[] textBoxes;    /// TextBox controls to be aded to TableLayoutPanel
        int[] intData;          /// integer data |
        double[] doubleData;    /// double data  |-> one of these three arrays is used
        string[] stringData;    /// string data  |

        /// <summary>
        /// Constructor, which creates TextBox controls and adds them to the table layout panel.
        /// </summary>
        public AttachedTextBoxes(TableLayoutPanel tblLtPnl, Arrangement arngmnt, int firstColumn, int firstRow, int size)
        {
            this.count = size;
            this.arngmnt = arngmnt;
            isRow = (arngmnt == Arrangement.RowOfIntegers || arngmnt == Arrangement.RowOfDoubles || arngmnt == Arrangement.RowOfStrings);

            textBoxes = new TextBox[count];
            intData = new int[count];
            doubleData = new double[count];
            stringData = new string[count];

            for (int i = 0; i < count; i++)
            {
                textBoxes[i] = new TextBox();       /// Crete a new TextBox control

                if (isRow)
                {
                    tblLtPnl.Controls.Add(textBoxes[i], firstColumn + i, firstRow);
                }
                else
                {
                    tblLtPnl.Controls.Add(textBoxes[i], firstColumn, firstRow + i);
                }
            }
        }

        /// <summary>
        /// Attached data array size
        /// </summary>
        public int Count { get { return count; } }

        /// <summary>
        /// Indexer returning a TextBox
        /// </summary>
        /// <param name="index">Index</param>
        /// <returns>TextBox object reference</returns>
        public TextBox this[int index]
        {
            get
            {
                if (index < 0 || index >= count)
                {
                    return null;
                }
                else
                {
                    return textBoxes[index];
                }
            }
        }

        /// <summary>
        /// Retrieves data from the controls or detects a format error.
        /// Wrong format in a cell interrupts data retrieving, so when the first control
        /// contains data with wrong format, no data are retrieved at all.
        /// </summary>
        /// <returns>true if all data have correct format</returns>
        public bool ValidateData()
        {
            switch (arngmnt)
            {
                case Arrangement.RowOfIntegers:
                case Arrangement.ColumnOfIntegers:
                    for (int i = 0; i < count; i++)
                    {
                        if (!Int32.TryParse(textBoxes[i].Text, out intData[i]))  return false;
                    }
                    return true;

                case Arrangement.RowOfDoubles:
                case Arrangement.ColumnOfDoubles:
                    for (int i = 0; i < count; i++)
                    {
                        if (!Double.TryParse(textBoxes[i].Text, out doubleData[i]))  return false;
                    }
                    return true;

                case Arrangement.RowOfStrings:
                case Arrangement.ColumnOfStrings:
                default:
                    return true;
            }
        }

        /// <summary>
        /// The following three methods provide initialization of controls with original data.
        /// </summary>
        
        public void SetData(int index, int value)
        {
            if (index < 0 || index >= count) return;
            intData[index] = value;
            textBoxes[index].Text = value.ToString();
        }

        public void SetData(int index, double value)
        {
            if (index < 0 || index >= count) return;
            doubleData[index] = value;
            textBoxes[index].Text = value.ToString();
        }

        public void SetData(int index, string value)
        {
            if (index < 0 || index >= count) return;
            stringData[index] = value;
            textBoxes[index].Text = value;
        }

        /// <summary>
        /// The following three methods provide retrieving data from controls.
        /// ValidateData() must be called first. The return value must be true.
        /// </summary>

        public int GetIntData(int index)
        {
            if (index < 0 || index >= count) return 0;
            return intData[index];
        }

        public double GetDoubleData(int index)
        {
            if (index < 0 || index >= count) return 0;
            return doubleData[index];
        }

        public string GetStringData(int index)
        {
            if (index < 0 || index >= count) return null;
            return textBoxes[index].Text;
        }
    }
}