///
/// Copyright (c) 2015-2018 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using log4net;
using Common;
using Config;
using TBF.Rig.GenericDevices;
using TBF.Resources;

namespace TBF.Rig.DataEntry.Standard24
{
	public partial class TestStartEndForm : Form, GenericDevices.IHasCompleted
    {
        enum Kind
        {
            Undefined,
            Start,
            AdvancedStart,
            End,
        }

		private static readonly ILog log = LogManager.GetLogger(typeof(TestStartEndForm));

		// Set to 'true' when the form closes
		public bool Completed { get { return completed; } }
		bool completed;

		/// <summary> Number of text boxes for serial numbers </summary>
        public readonly int WaterMetersCount;
		readonly IRegReader[] regReaders;
		readonly bool[] disabled;
        readonly string closeFormKeys;

		// To be retrieved after the form closes
		public double[] WMStartState;
		public readonly string[] WMStartStateStr;
        public double[] WMEndState;
        public readonly string[] WMEndStateStr;

        public Unit VolumeUnit;

        Kind kind;				/// false=start states, true=end states
		double refVolume;
		double warningLimLo;	/// limit to display exclamation mark, typically 2x errLimLo
		double warningLimHi;	/// limit to display exclamation mark, typically 2x errLimHi
        bool fixedErrorLimits;  /// false in case of calculated error limits

		int TextBoxesCount;
		///
		Label[] labels;
		TextBox[] startTextBoxes;
		TextBox[] endTextBoxes;
        Label[] exclamations;

		IList<TextBox> activeTextBoxes;
        IList<int> activeWmNrs;

		/// <summary>
		/// Parameterless constructor initializing common part for start and endstate form
		/// </summary>
		public TestStartEndForm()
		{
			InitializeComponent();

            this.Icon = Properties.Resources.TBF_icon;

            ControlBox = false;

			TextBoxesCount = 24;

			labels = new Label[]
				{
					label1,  label2,  label3,  label4,  label5,  label6,  label7,  label8,  label9,  label10,
					label11, label12, label13, label14, label15, label16, label17, label18, label19, label20,
					label21, label22, label23, label24,
				};
			startTextBoxes = new TextBox[]
				{
					startTextBox1, startTextBox2, startTextBox3, startTextBox4, startTextBox5, startTextBox6,
					startTextBox7, startTextBox8, startTextBox9, startTextBox10, startTextBox11, startTextBox12,
					startTextBox13, startTextBox14, startTextBox15, startTextBox16, startTextBox17, startTextBox18,
					startTextBox19, startTextBox20, startTextBox21, startTextBox22, startTextBox23, startTextBox24,
				};
			endTextBoxes = new TextBox[]
				{
					endTextBox1, endTextBox2, endTextBox3, endTextBox4, endTextBox5, endTextBox6,
					endTextBox7, endTextBox8, endTextBox9, endTextBox10, endTextBox11, endTextBox12,
					endTextBox13, endTextBox14, endTextBox15, endTextBox16, endTextBox17, endTextBox18,
					endTextBox19, endTextBox20, endTextBox21, endTextBox22, endTextBox23, endTextBox24,
				};
            exclamations = new Label[]
                {
					exclamation1, exclamation2, exclamation3, exclamation4, exclamation5, exclamation6,
					exclamation7, exclamation8, exclamation9, exclamation10, exclamation11, exclamation12,
					exclamation13, exclamation14, exclamation15, exclamation16, exclamation17, exclamation18,
					exclamation19, exclamation20, exclamation21, exclamation22, exclamation23, exclamation24,
                };

			activeTextBoxes = new List<TextBox>();
            activeWmNrs = new List<int>();

            for (Unit u = 0; u < Unit.Count; u++)
            {
                if (Units.IsVolume(u)) unitComboBox.Items.Add(u.ToDescription());
            }

			completed = false;
			StartForceCloseHandler();
		}

		/// <summary>
		/// Constructor to fill in start states
		/// </summary>
		/// <param name="waterMetersCount">Number of water meters</param>
		/// <param name="disabled">Information from CycleBeginningForm about availability of water meters</param>
		public TestStartEndForm(int waterMetersCount, IRegReader[] regReaders, bool[] disabled, string closeFormKeys, Unit initialVolumeUnit)
			: this()
		{
			kind = Kind.Start;

			this.WaterMetersCount = waterMetersCount;
			this.regReaders = regReaders;
			this.disabled = disabled;
            this.closeFormKeys = closeFormKeys;

			ShuffleTextBoxes();

			WMStartState = new double[waterMetersCount];
			WMStartStateStr = new string[waterMetersCount];

            VolumeUnit = initialVolumeUnit;
            unitComboBox.Text = VolumeUnit.ToDescription();
        }

        /// <summary>
        /// Constructor to fill in start states
        /// </summary>
        /// <param name="waterMetersCount">Number of water meters</param>
        /// <param name="disabled">Information from CycleBeginningForm about availability of water meters</param>
        public TestStartEndForm(int waterMetersCount, IRegReader[] regReaders, string[] wmEndStateStr, bool[] disabled)
            : this()
        {
            kind = Kind.AdvancedStart;

            this.WaterMetersCount = waterMetersCount;
            this.regReaders = regReaders;
            if (wmEndStateStr == null || wmEndStateStr.Length != waterMetersCount)
                throw (new Exception("Invalid 'wmStartStateStr' argument"));
            this.WMEndStateStr = wmEndStateStr;
            this.disabled = disabled;

            ShuffleTextBoxes();

            WMStartState = new double[waterMetersCount];
            WMStartStateStr = new string[waterMetersCount];
        }

        /// <summary>
        /// Constructor to fill in end states
        /// </summary>
		/// <param name="waterMetersCount">Number of water meters</param>
		/// <param name="wmStartStateStr">Information entered on test start</param>
		/// <param name="disabled">Information from CycleBeginningForm about availability of water meters</param>
		/// <param name="refVolume">Reference volume, it is used to verify the end state, show/hide exclamation if necessary</param>
		/// <param name="errLimLo">Error limit low, it is used to verify the end state, show/hide exclamation if necessary</param>
		/// <param name="errLimHi">Error limit high, it is used to verify the end state, show/hide exclamation if necessary</param>
		public TestStartEndForm(int waterMetersCount, IRegReader[] regReaders, string[] wmStartStateStr, bool[] disabled,
                                double refVolume, double errLimLo, double errLimHi, Unit initialVolumeUnit)
			: this()
        {
			kind = Kind.End;

			this.WaterMetersCount = waterMetersCount;
			this.regReaders = regReaders;
			if (wmStartStateStr == null || wmStartStateStr.Length != waterMetersCount)
				throw (new Exception("Invalid 'wmStartStateStr' argument"));
			this.WMStartStateStr = wmStartStateStr;
			this.disabled = disabled;
            this.refVolume = refVolume;
            this.warningLimLo = 2 * errLimLo;
            this.warningLimHi = 2 * errLimHi;
            this.fixedErrorLimits = (errLimHi > errLimLo);

			ShuffleTextBoxes();

            WMStartState = new double[waterMetersCount];
            WMEndState = new double[waterMetersCount];
            WMEndStateStr = new string[waterMetersCount];

            VolumeUnit = initialVolumeUnit;
            unitComboBox.Text = VolumeUnit.ToDescription();
        }

		/// <summary>
		/// Make sure the layout of labels/text boxes on the screen
		/// corresponds to the layout of watermeters of the test bench.
		/// </summary>
		void ShuffleTextBoxes()
		{
			if (TextBoxesCount > WaterMetersCount)
			{
				int nrLines = WaterMetersCount / TBF.Data.LineSize;
				int gap = (TextBoxesCount - WaterMetersCount) / nrLines;

				int dest = 0;
				for (int l = 0; l < nrLines; l++)
				{
					for (int i = 0; i < TBF.Data.LineSize; i++)
					{
						labels[dest] = labels[l * TBF.Data.LineSize + l * gap + i];
						startTextBoxes[dest] = startTextBoxes[l * TBF.Data.LineSize + l * gap + i];
						endTextBoxes[dest] = endTextBoxes[l * TBF.Data.LineSize + l * gap + i];
                        exclamations[dest] = exclamations[l * TBF.Data.LineSize + l * gap + i];
                        dest++;
					}
				}
				TextBoxesCount = WaterMetersCount;
			}
		}

		private void TestStartEndForm_Load(object sender, EventArgs e)
		{
            Localize();

            //Height = 115 + 90 * WaterMetersCount;

			for (int i = 0; i < TextBoxesCount; i++)
			{
				if (i < WaterMetersCount)
				{
					labels[i].Visible = startTextBoxes[i].Visible = endTextBoxes[i].Visible = true;
				}
			}

            if (kind == Kind.End)
			{
                /// End of test
				for (int i = 0; i < TextBoxesCount; i++)
				{
					if (((i < disabled.Length) && disabled[i]) || ((i < regReaders.Length) && (regReaders[i] == null)))
					{
						endTextBoxes[i].Enabled = false;
					}
					else
					{
						if (WMStartStateStr != null && i < WMStartStateStr.Length)
						{
							startTextBoxes[i].Text = WMStartStateStr[i];
						}

						endTextBoxes[i].Enabled = true;
						activeTextBoxes.Add(endTextBoxes[i]);
                        activeWmNrs.Add(i);
                    }
				}
			}
            else if (kind == Kind.Start || kind == Kind.AdvancedStart)
			{ 
                /// Start of test
				for (int i = 0; i < TextBoxesCount; i++)
				{
					if (((i < disabled.Length) && disabled[i]) || ((i < regReaders.Length) && (regReaders[i] == null)))
					{
						startTextBoxes[i].Enabled = false;
					}
					else
					{
						startTextBoxes[i].Enabled = true;
						activeTextBoxes.Add(startTextBoxes[i]);
                        activeWmNrs.Add(i);

                        if ((kind == Kind.AdvancedStart) && (WMEndStateStr != null) && (i < WMEndStateStr.Length) && (!string.IsNullOrEmpty(WMEndStateStr[i])))
                        {
                            startTextBoxes[i].Text = WMEndStateStr[i];
                        }
                    }
                }
			}

            if ((activeTextBoxes.Count > 0) && (activeWmNrs.Count > 0))
            {
                activeTextBoxes[0].Focus();
                largeTextBox.Text = string.Format("{0}:   {1}", activeWmNrs[0] + 1, string.Empty);
            }
		}

		void Localize()
		{
			Text = Strings.Water_Meter_States;
			for (int i = 0; i < TextBoxesCount; i++)
			{
                labels[i].Text = (i + 1).ToString();
            }
			startLabel.Text = startLabel2.Text = Strings.Start;
			endLabel.Text = endLabel2.Text = Strings.End;
			okButton.Text = Strings.OkBtnText;
		}

		private void okButton_Click(object sender, EventArgs eArgs)
		{
			for (int i = 0; i < Math.Min(WaterMetersCount, TextBoxesCount); i++)
			{
                double startVol, endVol;

				if (kind == Kind.End)
				{
                    if (endTextBoxes[i].Visible &&
                        endTextBoxes[i].Enabled &&
                        Utils.TryParseUDouble(startTextBoxes[i].Text, out startVol) &&
                        Utils.TryParseUDouble(endTextBoxes[i].Text, out endVol))
					{
                        WMStartState[i] = Units.ConvertFrom(VolumeUnit, startVol);
                        WMEndState[i] = Units.ConvertFrom(VolumeUnit, endVol);
					}
				}
				else
				{
                    if (startTextBoxes[i].Visible &&
                        startTextBoxes[i].Enabled &&
                        Utils.TryParseUDouble(startTextBoxes[i].Text, out startVol))
                    {
						WMStartStateStr[i] = startTextBoxes[i].Text;
                        WMStartState[i] = Units.ConvertFrom(VolumeUnit, startVol);
					}
				}
			}

			completed = true;
			Close();
		}

		#region Forced close handling

		public void StartForceCloseHandler()
		{
			UiBridge.Bridge.CloseModelessFormHandler += delegate(object sender, EventArgs args)
			{
				if (InvokeRequired) { Invoke(new EventHandler<EventArgs>(OnForceClose), sender, args); }
				else OnForceClose(sender, args);
			};
		}

		void OnForceClose(object sender, EventArgs args)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}

		#endregion


        /// <summary>
        /// Calculate the approximate error and verify whether it is within limits.
        /// Make an exclamation mark visible if out of range.
        /// Similar event handler is implemented for all endTextBoxes (1..24).
        /// </summary>
        private void ProcEndTextChanged(object sender, EventArgs e, TextBox endTBox)
        {
            int wmIx = -1;
            for (int i = 0; i < endTextBoxes.Length; i++)
            {
                if (endTextBoxes[i] == endTBox)
                {
                    wmIx = i;
                    break;
                }
            }

            if (wmIx < 0 || wmIx >= TextBoxesCount) return;

            double startVol, endVol;

            if (Utils.TryParseUDouble(startTextBoxes[wmIx].Text, out startVol) &&
                Utils.TryParseUDouble(endTextBoxes[wmIx].Text, out endVol))
            {
                double startState = Units.ConvertFrom(VolumeUnit, startVol);
                double endState = Units.ConvertFrom(VolumeUnit, endVol);
                double err = (refVolume != 0) ? 100.0 * (endState - startState - refVolume) / refVolume : 1000.0;
                largeExclamationLabel.Visible =
                    exclamations[wmIx].Visible = fixedErrorLimits ? ((err < warningLimLo) || (warningLimHi < err)) : ((err < -6) || (+6 < err));
            }
            else
            {
                largeExclamationLabel.Visible =
                    exclamations[wmIx].Visible = !string.IsNullOrEmpty(endTextBoxes[wmIx].Text);
            }

            largeTextBox.Text = string.Format("{0}:   {1}", wmIx + 1, endTextBoxes[wmIx].Text);
        }

        private void endTextBox1_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox1); }
        private void endTextBox2_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox2); }
        private void endTextBox3_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox3); }
        private void endTextBox4_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox4); }
        private void endTextBox5_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox5); }
        private void endTextBox6_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox6); }
        private void endTextBox7_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox7); }
        private void endTextBox8_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox8); }
        private void endTextBox9_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox9); }
        private void endTextBox10_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox10); }
        private void endTextBox11_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox11); }
        private void endTextBox12_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox12); }
        private void endTextBox13_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox13); }
        private void endTextBox14_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox14); }
        private void endTextBox15_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox15); }
        private void endTextBox16_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox16); }
        private void endTextBox17_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox17); }
        private void endTextBox18_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox18); }
        private void endTextBox19_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox19); }
        private void endTextBox20_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox20); }
        private void endTextBox21_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox21); }
        private void endTextBox22_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox22); }
        private void endTextBox23_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox23); }
        private void endTextBox24_TextChanged(object sndr, EventArgs e) { ProcEndTextChanged(sndr, e, endTextBox24); }

        private void endTextBox1_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox1); }
        private void endTextBox2_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox2); }
        private void endTextBox3_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox3); }
        private void endTextBox4_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox4); }
        private void endTextBox5_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox5); }
        private void endTextBox6_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox6); }
        private void endTextBox7_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox7); }
        private void endTextBox8_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox8); }
        private void endTextBox9_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox9); }
        private void endTextBox10_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox10); }
        private void endTextBox11_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox11); }
        private void endTextBox12_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox12); }
        private void endTextBox13_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox13); }
        private void endTextBox14_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox14); }
        private void endTextBox15_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox15); }
        private void endTextBox16_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox16); }
        private void endTextBox17_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox17); }
        private void endTextBox18_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox18); }
        private void endTextBox19_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox19); }
        private void endTextBox20_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox20); }
        private void endTextBox21_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox21); }
        private void endTextBox22_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox22); }
        private void endTextBox23_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox23); }
        private void endTextBox24_MouseClick(object sender, MouseEventArgs e) { ProcEndTextChanged(sender, e, endTextBox24); }

		/// <summary>
		/// Process a key press within any enabled text boxe
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		/// <param name="currentFocusOwner">TextBox control which received the event</param>
		private void ProcKeyPress(object sender, KeyPressEventArgs e, TextBox currentFocusOwner)
		{
            if (!string.IsNullOrEmpty(closeFormKeys))
            {
                /// Close the form if any 'close form key' was pressed
                for (int ix = 0; ix < closeFormKeys.Length; ix++)
                {
                    if (e.KeyChar == closeFormKeys[ix])
                    {
                        okButton_Click(sender, e);
                        return;
                    }
                }
            }

            if (e.KeyChar == '\r')
            {
                /// Process <enter> key ..... Next text field
                if (activeTextBoxes.Count < 2) return;		/// There is just one enabled textbox

                for (int i = 0; i < activeTextBoxes.Count; i++)
                {
                    if (activeTextBoxes[i] == currentFocusOwner)
                    {
                        /// Change focus to the next enabled text box
                        int newTBIdx = (i + 1) % activeTextBoxes.Count;
                        activeTextBoxes[newTBIdx].Focus();
                        largeTextBox.Text = string.Format("{0}:   {1}", activeWmNrs[newTBIdx] + 1, activeTextBoxes[newTBIdx].Text);
                        largeExclamationLabel.Visible = false;
                        return;
                    }
                }
            }
		}

		private void startTextBox1_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox1); }
		private void startTextBox2_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox2); }
		private void startTextBox3_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox3); }
		private void startTextBox4_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox4); }
		private void startTextBox5_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox5); }
		private void startTextBox6_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox6); }
		private void startTextBox7_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox7); }
		private void startTextBox8_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox8); }
		private void startTextBox9_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox9); }
		private void startTextBox10_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox10); }
		private void startTextBox11_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox11); }
		private void startTextBox12_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox12); }
		private void startTextBox13_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox13); }
		private void startTextBox14_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox14); }
		private void startTextBox15_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox15); }
		private void startTextBox16_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox16); }
		private void startTextBox17_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox17); }
		private void startTextBox18_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox18); }
		private void startTextBox19_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox19); }
		private void startTextBox20_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox20); }
		private void startTextBox21_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox21); }
		private void startTextBox22_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox22); }
		private void startTextBox23_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox23); }
		private void startTextBox24_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, startTextBox24); }

        private void endTextBox1_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox1); }
        private void endTextBox2_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox2); }
        private void endTextBox3_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox3); }
        private void endTextBox4_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox4); }
        private void endTextBox5_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox5); }
        private void endTextBox6_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox6); }
        private void endTextBox7_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox7); }
        private void endTextBox8_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox8); }
        private void endTextBox9_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox9); }
		private void endTextBox10_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox10); }
		private void endTextBox11_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox11); }
		private void endTextBox12_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox12); }
		private void endTextBox13_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox13); }
		private void endTextBox14_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox14); }
		private void endTextBox15_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox15); }
		private void endTextBox16_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox16); }
		private void endTextBox17_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox17); }
		private void endTextBox18_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox18); }
		private void endTextBox19_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox19); }
		private void endTextBox20_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox20); }
		private void endTextBox21_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox21); }
		private void endTextBox22_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox22); }
		private void endTextBox23_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox23); }
		private void endTextBox24_KeyPress(object sndr, KeyPressEventArgs e) { ProcKeyPress(sndr, e, endTextBox24); }


        private void ProcStartTextChanged(object sender, EventArgs e, TextBox startTBox)
        {
            for (int i = 0; i < startTextBoxes.Length; i++)
            {
                if (startTextBoxes[i] == startTBox)
                {
                    largeTextBox.Text = string.Format("{0}:   {1}", i + 1, startTextBoxes[i].Text);
                    largeExclamationLabel.Visible = false;
                    break;
                }
            }
        }

        private void startTextBox1_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox1); }
        private void startTextBox2_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox2); }
        private void startTextBox3_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox3); }
        private void startTextBox4_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox4); }
        private void startTextBox5_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox5); }
        private void startTextBox6_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox6); }
        private void startTextBox7_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox7); }
        private void startTextBox8_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox8); }
        private void startTextBox9_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox9); }
        private void startTextBox10_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox10); }
        private void startTextBox11_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox11); }
        private void startTextBox12_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox12); }
        private void startTextBox13_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox13); }
        private void startTextBox14_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox14); }
        private void startTextBox15_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox15); }
        private void startTextBox16_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox16); }
        private void startTextBox17_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox17); }
        private void startTextBox18_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox18); }
        private void startTextBox19_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox19); }
        private void startTextBox20_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox20); }
        private void startTextBox21_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox21); }
        private void startTextBox22_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox22); }
        private void startTextBox23_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox23); }
        private void startTextBox24_TextChanged(object sender, EventArgs e) { ProcStartTextChanged(sender, e, startTextBox24); }

        private void startTextBox1_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox1); }
        private void startTextBox2_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox2); }
        private void startTextBox3_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox3); }
        private void startTextBox4_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox4); }
        private void startTextBox5_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox5); }
        private void startTextBox6_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox6); }
        private void startTextBox7_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox7); }
        private void startTextBox8_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox8); }
        private void startTextBox9_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox9); }
        private void startTextBox10_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox10); }
        private void startTextBox11_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox11); }
        private void startTextBox12_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox12); }
        private void startTextBox13_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox13); }
        private void startTextBox14_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox14); }
        private void startTextBox15_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox15); }
        private void startTextBox16_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox16); }
        private void startTextBox17_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox17); }
        private void startTextBox18_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox18); }
        private void startTextBox19_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox19); }
        private void startTextBox20_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox20); }
        private void startTextBox21_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox21); }
        private void startTextBox22_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox22); }
        private void startTextBox23_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox23); }
        private void startTextBox24_MouseClick(object sender, MouseEventArgs e) { ProcStartTextChanged(sender, e, startTextBox24); }

        private void unitComboBox_TextChanged(object sender, EventArgs e)
        {
            unitComboBox_SelectedIndexChanged(sender, e);
        }

        private void unitComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            var newUnit = Units.FromDescription(unitComboBox.Text);

            if (Units.IsVolume(newUnit))
            {
                VolumeUnit = newUnit;

                if (kind == Kind.End)
                {
                    for (int i = 0; i < TextBoxesCount; i++)
                    {
                        double startVol, endVol;

                        if (Utils.TryParseUDouble(startTextBoxes[i].Text, out startVol) &&
                            Utils.TryParseUDouble(endTextBoxes[i].Text, out endVol))
                        {
                            double startState = Units.ConvertFrom(VolumeUnit, startVol);
                            double endState = Units.ConvertFrom(VolumeUnit, endVol);
                            double err = (refVolume != 0) ? 100.0 * (endState - startState - refVolume) / refVolume : 1000.0;
                            exclamations[i].Visible = fixedErrorLimits ? ((err < warningLimLo) || (warningLimHi < err)) : ((err < -6) || (+6 < err));
                        }
                        else
                        {
                            exclamations[i].Visible = !string.IsNullOrEmpty(endTextBoxes[i].Text);
                        }
                    }

                    largeTextBox.Text = string.Empty;
                    largeExclamationLabel.Visible = false;
                }
            }
        }
    }
}