MainForm.cs

using System.Globalization;
using DisksizeWatcher.Properties;

namespace DisksizeWatcher
{
	/// <summary>
	/// Show the main window of the application
	/// </summary>
	public partial class MainForm : Form
	{
		/// <summary>
		/// Drive information
		/// </summary>
		private readonly DriveInfo drive = new(driveName: "C");

		/// <summary>
		/// Unit of the space
		/// </summary>
		private short unitSpace;

		/// <summary>
		/// Values of the space
		/// </summary>
		private double usedSpace, freeSpace, totalSpace, diffSpace, usedSpaceOrig, freeSpaceOrig, totalSpaceOrig, diffSpaceOrig, freeSpacePerc, usedSpacePerc;

		/// <summary>
		/// Number format
		/// </summary>
		private string numberFormat;

		/// <summary>
		/// Size units
		/// </summary>
		private enum SizeUnit
		{
			Byte = 0,
			Kilobyte = 1,
			Megabyte = 2,
			Gigabyte = 3,
			Terabyte = 4,
			Pentabyte = 5
		}

		#region Local methods

		/// <summary>
		/// Detects if a float number has a fraction
		/// </summary>
		/// <param name="number">number to check</param>
		/// <returns></returns>
		private static bool HasFraction(double number) => !(number - Math.Truncate(d: number) == 0);

		/// <summary>
		/// Choose the correct unit for the diff space
		/// </summary>
		private void CaseSpaceUnits()
		{
			switch (unitSpace)
			{
				case (int)SizeUnit.Byte:
					labelSpaceUsedUnit.Text = Resources.bytes;
					labelSpaceFreeUnit.Text = Resources.bytes;
					labelSpaceTotalUnit.Text = Resources.bytes;
					labelSpaceDiffUnit.Text = Resources.bytes;
					break;
				case (int)SizeUnit.Kilobyte:
					labelSpaceUsedUnit.Text = Resources.kilobytes;
					labelSpaceFreeUnit.Text = Resources.kilobytes;
					labelSpaceTotalUnit.Text = Resources.kilobytes;
					labelSpaceDiffUnit.Text = Resources.kilobytes;
					break;
				case (int)SizeUnit.Megabyte:
					labelSpaceUsedUnit.Text = Resources.megabytes;
					labelSpaceFreeUnit.Text = Resources.megabytes;
					labelSpaceTotalUnit.Text = Resources.megabytes;
					labelSpaceDiffUnit.Text = Resources.megabytes;
					break;
				case (int)SizeUnit.Gigabyte:
					labelSpaceUsedUnit.Text = Resources.gigabytes;
					labelSpaceFreeUnit.Text = Resources.gigabytes;
					labelSpaceTotalUnit.Text = Resources.gigabytes;
					labelSpaceDiffUnit.Text = Resources.gigabytes;
					break;
				case (int)SizeUnit.Terabyte:
					labelSpaceUsedUnit.Text = Resources.terabytes;
					labelSpaceFreeUnit.Text = Resources.terabytes;
					labelSpaceTotalUnit.Text = Resources.terabytes;
					labelSpaceDiffUnit.Text = Resources.terabytes;
					break;
				case (int)SizeUnit.Pentabyte:
					labelSpaceUsedUnit.Text = Resources.pentabytes;
					labelSpaceFreeUnit.Text = Resources.pentabytes;
					labelSpaceTotalUnit.Text = Resources.pentabytes;
					labelSpaceDiffUnit.Text = Resources.pentabytes;
					break;
				default:
					labelSpaceUsedUnit.Text = Resources.bytes;
					labelSpaceFreeUnit.Text = Resources.bytes;
					labelSpaceTotalUnit.Text = Resources.bytes;
					labelSpaceDiffUnit.Text = Resources.bytes;
					unitSpace = 0;
					break;
			}
		}

		/// <summary>
		/// Set a specific text to the status bar
		/// </summary>
		/// <param name="text">text with some information</param>
		private void SetStatusbarText(string text)
		{
			labelInformation.Enabled = !string.IsNullOrEmpty(value: text);
			labelInformation.Text = text;
		}

		/// <summary>
		/// Set up the number with a fraction
		/// </summary>
		private void SetUpNumberWithFraction()
		{
			if (toolStripButtonThousandSeparator.Checked)
			{
				if (toolStripMenuItemDecimalSeparatorTo0.Checked)
				{
					numberFormat = Resources.numberformatN0;
				}
				else if (toolStripMenuItemDecimalSeparatorTo1.Checked)
				{
					numberFormat = Resources.numberformatN1;
				}
				else if (toolStripMenuItemDecimalSeparatorTo2.Checked)
				{
					numberFormat = Resources.numberformatN2;
				}
				else if (toolStripMenuItemDecimalSeparatorTo3.Checked)
				{
					numberFormat = Resources.numberformatN3;
				}
				else if (toolStripMenuItemDecimalSeparatorTo4.Checked)
				{
					numberFormat = Resources.numberformatN4;
				}
				else if (toolStripMenuItemDecimalSeparatorTo5.Checked)
				{
					numberFormat = Resources.numberformatN5;
				}
				else if (toolStripMenuItemDecimalSeparatorTo6.Checked)
				{
					numberFormat = Resources.numberformatN6;
				}
				return;
			}
			if (toolStripMenuItemDecimalSeparatorTo0.Checked)
			{
				numberFormat = Resources.numberformatF0;
				return;
			}
			if (toolStripMenuItemDecimalSeparatorTo1.Checked)
			{
				numberFormat = Resources.numberformatF1;
				return;
			}
			if (toolStripMenuItemDecimalSeparatorTo2.Checked)
			{
				numberFormat = Resources.numberformatF2;
				return;
			}
			if (toolStripMenuItemDecimalSeparatorTo3.Checked)
			{
				numberFormat = Resources.numberformatF3;
				return;
			}
			if (toolStripMenuItemDecimalSeparatorTo4.Checked)
			{
				numberFormat = Resources.numberformatF4;
				return;
			}
			if (toolStripMenuItemDecimalSeparatorTo5.Checked)
			{
				numberFormat = Resources.numberformatF5;
				return;
			}
			if (!toolStripMenuItemDecimalSeparatorTo6.Checked)
			{
				return;
			}
			numberFormat = Resources.numberformatF6;
		}

		/// <summary>
		/// Set up the number without a fraction
		/// </summary>
		private void SetUpNumberWithoutFraction()
		{
			if (toolStripButtonThousandSeparator.Checked)
			{
				numberFormat = Resources.numberformatN0;
			}
		}

		/// <summary>
		/// Update the information of the disk space
		/// </summary>
		private void UpdateSpaceInfo()
		{
			if (drive.IsReady)
			{
				diffSpaceOrig = usedSpaceOrig;
				usedSpaceOrig = drive.TotalSize - drive.TotalFreeSpace;
				freeSpaceOrig = drive.TotalFreeSpace;
				totalSpaceOrig = drive.TotalSize;
				usedSpace = usedSpaceOrig;
				freeSpace = freeSpaceOrig;
				totalSpace = totalSpaceOrig;
				diffSpace = diffSpaceOrig;
				switch (unitSpace)
				{
					case (int)SizeUnit.Kilobyte:
						usedSpace /= 1024;
						totalSpace /= 1024;
						freeSpace /= 1024;
						diffSpace /= 1024;
						break;
					case (int)SizeUnit.Megabyte:
						usedSpace = usedSpace / 1024 / 1024;
						freeSpace = freeSpace / 1024 / 1024;
						totalSpace = totalSpace / 1024 / 1024;
						diffSpace = diffSpace / 1024 / 1024;
						break;
					case (int)SizeUnit.Gigabyte:
						usedSpace = usedSpace / 1024 / 1024 / 1024;
						freeSpace = freeSpace / 1024 / 1024 / 1024;
						totalSpace = totalSpace / 1024 / 1024 / 1024;
						diffSpace = diffSpace / 1024 / 1024 / 1024;
						break;
					case (int)SizeUnit.Terabyte:
						usedSpace = usedSpace / 1024 / 1024 / 1024 / 1024;
						freeSpace = freeSpace / 1024 / 1024 / 1024 / 1024;
						totalSpace = totalSpace / 1024 / 1024 / 1024 / 1024;
						diffSpace = diffSpace / 1024 / 1024 / 1024 / 1024;
						break;
					case (int)SizeUnit.Pentabyte:
						usedSpace = usedSpace / 1024 / 1024 / 1024 / 1024 / 1024;
						freeSpace = freeSpace / 1024 / 1024 / 1024 / 1024 / 1024;
						totalSpace = totalSpace / 1024 / 1024 / 1024 / 1024 / 1024;
						diffSpace = diffSpace / 1024 / 1024 / 1024 / 1024 / 1024;
						break;
					default:
						break;
				}
				freeSpacePerc = freeSpaceOrig / totalSpaceOrig * 100;
				usedSpacePerc = 100 - freeSpacePerc;
				progressBarPercentage.Value = (int)usedSpacePerc;
				numberFormat = Resources.numberformatG6;
				labelSpacePercentageValue.Text = $"{usedSpacePerc.ToString(format: numberFormat, provider: CultureInfo.CurrentCulture)} %";
				numberFormat = string.Empty;
				if (HasFraction(number: usedSpace))
				{
					SetUpNumberWithFraction();
				}
				else
				{
					SetUpNumberWithoutFraction();
				}
				textBoxSpaceUsed.Text = usedSpace.ToString(format: numberFormat, provider: CultureInfo.CurrentCulture);
				numberFormat = string.Empty;
				if (HasFraction(number: freeSpace))
				{
					SetUpNumberWithFraction();
				}
				else
				{
					SetUpNumberWithoutFraction();
				}
				textBoxSpaceFree.Text = freeSpace.ToString(format: numberFormat, provider: CultureInfo.CurrentCulture);
				numberFormat = string.Empty;
				if (HasFraction(number: totalSpace))
				{
					SetUpNumberWithFraction();
				}
				else
				{
					SetUpNumberWithoutFraction();
				}
				textBoxSpaceTotal.Text = totalSpace.ToString(format: numberFormat, provider: CultureInfo.CurrentCulture);
				numberFormat = string.Empty;
				if (HasFraction(number: diffSpace))
				{
					SetUpNumberWithFraction();
				}
				else
				{
					SetUpNumberWithoutFraction();
				}
				usedSpace = usedSpaceOrig;
				switch (unitSpace)
				{
					case (int)SizeUnit.Kilobyte:
						usedSpace /= 1024;
						break;
					case (int)SizeUnit.Megabyte:
						usedSpace = usedSpace / 1024 / 1024;
						break;
					case (int)SizeUnit.Gigabyte:
						usedSpace = usedSpace / 1024 / 1024 / 1024;
						break;
					case (int)SizeUnit.Terabyte:
						usedSpace = usedSpace / 1024 / 1024 / 1024 / 1024;
						break;
					case (int)SizeUnit.Pentabyte:
						usedSpace = usedSpace / 1024 / 1024 / 1024 / 1024 / 1024;
						break;
					default:
						break;
				}
				textBoxSpaceDiff.Text = Math.Abs(value: diffSpace - usedSpace).ToString(format: numberFormat, provider: CultureInfo.CurrentCulture);
			}
		}

		#endregion

		#region Constructor

		/// <summary>
		/// Constructor
		/// </summary>
		public MainForm() => InitializeComponent();

		#endregion

		#region Load event handler

		/// <summary>
		/// Load the main form
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void MainForm_Load(object sender, EventArgs e)
		{
			SetStatusbarText(text: string.Empty);
			notifyIcon.Visible = false;
			if (drive.IsReady)
			{
				textBoxSpaceTotal.Text = drive.TotalSize.ToString(provider: CultureInfo.CurrentCulture);
				fileSystemWatcher.Path = drive.Name;
			}
		}

		#endregion

		#region Enter event handler

		/// <summary>
		/// Detect the accessibility description to set as information text in the status bar
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void SetStatusbar_Enter(object sender, EventArgs e)
		{
			switch (sender)
			{
				case TextBox textBox: SetStatusbarText(text: textBox.AccessibleDescription); break;
				case Button button: SetStatusbarText(text: button.AccessibleDescription); break;
				case RadioButton radioButton: SetStatusbarText(text: radioButton.AccessibleDescription); break;
				case CheckBox checkBox: SetStatusbarText(text: checkBox.AccessibleDescription); break;
				case DateTimePicker dateTimePicker: SetStatusbarText(text: dateTimePicker.AccessibleDescription); break;
				case Label label: SetStatusbarText(text: label.AccessibleDescription); break;
				case PictureBox pictureBox: SetStatusbarText(text: pictureBox.AccessibleDescription); break;
				case CheckedListBox checkedListBox: SetStatusbarText(text: checkedListBox.AccessibleDescription); break;
				case ComboBox box: SetStatusbarText(text: box.AccessibleDescription); break;
				case DataGridView view: SetStatusbarText(text: view.AccessibleDescription); break;
				case GroupBox group: SetStatusbarText(text: group.AccessibleDescription); break;
				case ListBox box: SetStatusbarText(text: box.AccessibleDescription); break;
				case ListView view: SetStatusbarText(text: view.AccessibleDescription); break;
				case MaskedTextBox box: SetStatusbarText(text: box.AccessibleDescription); break;
				case NumericUpDown numericUpDown: SetStatusbarText(text: numericUpDown.AccessibleDescription); break;
				case MonthCalendar monthCalendar: SetStatusbarText(text: monthCalendar.AccessibleDescription); break;
				case PropertyGrid propertyGrid: SetStatusbarText(text: propertyGrid.AccessibleDescription); break;
				case RichTextBox richTextBox: SetStatusbarText(text: richTextBox.AccessibleDescription); break;
				case ScrollBar scrollBar: SetStatusbarText(text: scrollBar.AccessibleDescription); break;
				case TrackBar trackBar: SetStatusbarText(text: trackBar.AccessibleDescription); break;
				case WebBrowser webBrowser: SetStatusbarText(text: webBrowser.AccessibleDescription); break;
				case DomainUpDown domainUpDown: SetStatusbarText(text: domainUpDown.AccessibleDescription); break;
				case ToolStripButton toolStripButton: SetStatusbarText(text: toolStripButton.AccessibleDescription); break;
				case ToolStripMenuItem toolStripMenuItem: SetStatusbarText(text: toolStripMenuItem.AccessibleDescription); break;
				case ToolStripLabel toolStripLabel: SetStatusbarText(text: toolStripLabel.AccessibleDescription); break;
				case ToolStripComboBox toolStripComboBox: SetStatusbarText(text: toolStripComboBox.AccessibleDescription); break;
				case ToolStripDropDown toolStripDropDown: SetStatusbarText(text: toolStripDropDown.AccessibleDescription); break;
				case ToolStripDropDownButton toolStripDropDownButton: SetStatusbarText(text: toolStripDropDownButton.AccessibleDescription); break;
				case ToolStripDropDownItem toolStripDropDownItem: SetStatusbarText(text: toolStripDropDownItem.AccessibleDescription); break;
				case ToolStripProgressBar progressBar: SetStatusbarText(text: progressBar.AccessibleDescription); break;
				case ToolStripSeparator toolStripSeparator: SetStatusbarText(text: toolStripSeparator.AccessibleDescription); break;
				case ToolStripTextBox toolStripTextBox: SetStatusbarText(text: toolStripTextBox.AccessibleDescription); break;
			}
		}

		#endregion

		#region Leave event handlers

		/// <summary>
		/// Clear the information text of the status bar
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void ClearStatusbar_Leave(object sender, EventArgs e) => SetStatusbarText(text: string.Empty);

		#endregion

		#region Click event handlers

		/// <summary>
		/// Show the value of the spaces in byte
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripButtonShowValueInByte_Click(object sender, EventArgs e)
		{
			unitSpace = (short)SizeUnit.Byte;
			CaseSpaceUnits();
			toolStripButtonShowValueInByte.Checked = true;
			toolStripButtonShowValueInKilobyte.Checked = false;
			toolStripButtonShowValueInMegabyte.Checked = false;
			toolStripButtonShowValueInGigabyte.Checked = false;
			toolStripButtonShowValueInTerabyte.Checked = false;
			toolStripButtonShowValueInPentabyte.Checked = false;
		}

		/// <summary>
		/// Show the value of the spaces in kilobyte
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripButtonShowValueInKilobyte_Click(object sender, EventArgs e)
		{
			unitSpace = (short)SizeUnit.Kilobyte;
			CaseSpaceUnits();
			toolStripButtonShowValueInByte.Checked = false;
			toolStripButtonShowValueInKilobyte.Checked = true;
			toolStripButtonShowValueInMegabyte.Checked = false;
			toolStripButtonShowValueInGigabyte.Checked = false;
			toolStripButtonShowValueInTerabyte.Checked = false;
			toolStripButtonShowValueInPentabyte.Checked = false;
		}

		/// <summary>
		/// Show the value of the spaces in megabyte
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripButtonShowValueInMegabyte_Click(object sender, EventArgs e)
		{
			unitSpace = (short)SizeUnit.Megabyte;
			CaseSpaceUnits();
			toolStripButtonShowValueInByte.Checked = false;
			toolStripButtonShowValueInKilobyte.Checked = false;
			toolStripButtonShowValueInMegabyte.Checked = true;
			toolStripButtonShowValueInGigabyte.Checked = false;
			toolStripButtonShowValueInTerabyte.Checked = false;
			toolStripButtonShowValueInPentabyte.Checked = false;
		}

		/// <summary>
		/// Show the value of the spaces in gigabyte
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripButtonShowValueInGigabyte_Click(object sender, EventArgs e)
		{
			unitSpace = (short)SizeUnit.Gigabyte;
			CaseSpaceUnits();
			toolStripButtonShowValueInByte.Checked = false;
			toolStripButtonShowValueInKilobyte.Checked = false;
			toolStripButtonShowValueInMegabyte.Checked = false;
			toolStripButtonShowValueInGigabyte.Checked = true;
			toolStripButtonShowValueInTerabyte.Checked = false;
			toolStripButtonShowValueInPentabyte.Checked = false;
		}

		/// <summary>
		/// Show the value of the spaces in terabyte
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripButtonShowValueInTerabyte_Click(object sender, EventArgs e)
		{
			unitSpace = (short)SizeUnit.Terabyte;
			CaseSpaceUnits();
			toolStripButtonShowValueInByte.Checked = false;
			toolStripButtonShowValueInKilobyte.Checked = false;
			toolStripButtonShowValueInMegabyte.Checked = false;
			toolStripButtonShowValueInGigabyte.Checked = false;
			toolStripButtonShowValueInTerabyte.Checked = true;
			toolStripButtonShowValueInPentabyte.Checked = false;
		}

		/// <summary>
		/// Show the value of the spaces in pentabyte
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripButtonShowValueInPentabyte_Click(object sender, EventArgs e)
		{
			unitSpace = (short)SizeUnit.Pentabyte;
			CaseSpaceUnits();
			toolStripButtonShowValueInByte.Checked = false;
			toolStripButtonShowValueInKilobyte.Checked = false;
			toolStripButtonShowValueInMegabyte.Checked = false;
			toolStripButtonShowValueInGigabyte.Checked = false;
			toolStripButtonShowValueInTerabyte.Checked = false;
			toolStripButtonShowValueInPentabyte.Checked = true;
		}

		/// <summary>
		/// Update the decimal separator to 0 places
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripMenuItemDecimalSeparatorTo0_Click(object sender, EventArgs e)
		{
			toolStripMenuItemDecimalSeparatorTo1.Checked = false;
			toolStripMenuItemDecimalSeparatorTo2.Checked = false;
			toolStripMenuItemDecimalSeparatorTo3.Checked = false;
			toolStripMenuItemDecimalSeparatorTo4.Checked = false;
			toolStripMenuItemDecimalSeparatorTo5.Checked = false;
			toolStripMenuItemDecimalSeparatorTo6.Checked = false;
		}

		/// <summary>
		/// Update the decimal separator to 1 place
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripMenuItemDecimalSeparatorTo1_Click(object sender, EventArgs e)
		{
			toolStripMenuItemDecimalSeparatorTo0.Checked = false;
			toolStripMenuItemDecimalSeparatorTo2.Checked = false;
			toolStripMenuItemDecimalSeparatorTo3.Checked = false;
			toolStripMenuItemDecimalSeparatorTo4.Checked = false;
			toolStripMenuItemDecimalSeparatorTo5.Checked = false;
			toolStripMenuItemDecimalSeparatorTo6.Checked = false;
		}

		/// <summary>
		/// Update the decimal separator to 2 places
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripMenuItemDecimalSeparatorTo2_Click(object sender, EventArgs e)
		{
			toolStripMenuItemDecimalSeparatorTo0.Checked = false;
			toolStripMenuItemDecimalSeparatorTo1.Checked = false;
			toolStripMenuItemDecimalSeparatorTo3.Checked = false;
			toolStripMenuItemDecimalSeparatorTo4.Checked = false;
			toolStripMenuItemDecimalSeparatorTo5.Checked = false;
			toolStripMenuItemDecimalSeparatorTo6.Checked = false;
		}

		/// <summary>
		/// Update the decimal separator to 3 places
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripMenuItemDecimalSeparatorTo3_Click(object sender, EventArgs e)
		{
			toolStripMenuItemDecimalSeparatorTo0.Checked = false;
			toolStripMenuItemDecimalSeparatorTo1.Checked = false;
			toolStripMenuItemDecimalSeparatorTo2.Checked = false;
			toolStripMenuItemDecimalSeparatorTo4.Checked = false;
			toolStripMenuItemDecimalSeparatorTo5.Checked = false;
			toolStripMenuItemDecimalSeparatorTo6.Checked = false;
		}

		/// <summary>
		/// Update the decimal separator to 4 places
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripMenuItemDecimalSeparatorTo4_Click(object sender, EventArgs e)
		{
			toolStripMenuItemDecimalSeparatorTo0.Checked = false;
			toolStripMenuItemDecimalSeparatorTo1.Checked = false;
			toolStripMenuItemDecimalSeparatorTo2.Checked = false;
			toolStripMenuItemDecimalSeparatorTo3.Checked = false;
			toolStripMenuItemDecimalSeparatorTo5.Checked = false;
			toolStripMenuItemDecimalSeparatorTo6.Checked = false;
		}

		/// <summary>
		/// Update the decimal separator to 5 places
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripMenuItemDecimalSeparatorTo5_Click(object sender, EventArgs e)
		{
			toolStripMenuItemDecimalSeparatorTo0.Checked = false;
			toolStripMenuItemDecimalSeparatorTo1.Checked = false;
			toolStripMenuItemDecimalSeparatorTo2.Checked = false;
			toolStripMenuItemDecimalSeparatorTo3.Checked = false;
			toolStripMenuItemDecimalSeparatorTo4.Checked = false;
			toolStripMenuItemDecimalSeparatorTo6.Checked = false;
		}

		/// <summary>
		/// Update the decimal separator to 6 places
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameter <paramref name="e"/> is not needed, but must be indicated.</remarks>
		private void ToolStripMenuItemDecimalSeparatorTo6_Click(object sender, EventArgs e)
		{
			toolStripMenuItemDecimalSeparatorTo0.Checked = false;
			toolStripMenuItemDecimalSeparatorTo1.Checked = false;
			toolStripMenuItemDecimalSeparatorTo2.Checked = false;
			toolStripMenuItemDecimalSeparatorTo3.Checked = false;
			toolStripMenuItemDecimalSeparatorTo4.Checked = false;
			toolStripMenuItemDecimalSeparatorTo5.Checked = false;
		}

		/// <summary>
		/// Open the program information window
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void ToolStripButtonInfo_Click(object sender, EventArgs e)
		{
			using AboutBoxForm aboutBoxForm = new();
			aboutBoxForm.TopMost = TopMost;
			aboutBoxForm.ShowDialog();
		}

		/// <summary>
		/// Open the license window
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void ToolStripButtonLicense_Click(object sender, EventArgs e)
		{
			using LicenseForm licenseForm = new();
			licenseForm.TopMost = TopMost;
			licenseForm.ShowDialog();
		}

		#endregion

		#region ButtonClick event handler

		/// <summary>
		/// Open the setting window and apply the settings
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void ToolStripSplitButtonSettings_ButtonClick(object sender, EventArgs e)
		{
			if (menuitemStayOnTop.Checked)
			{
				TopMost = false;
			}
			using (SettingsForm settingsForm = new())
			{
				settingsForm.StayOnTop = menuitemStayOnTop.Checked;
				settingsForm.MinimizeToSystemTray = menuitemMinimizeToSystemTray.Checked;
				DialogResult dialogResult = settingsForm.ShowDialog();
				if (dialogResult == DialogResult.OK)
				{
					menuitemStayOnTop.Checked = settingsForm.StayOnTop;
					menuitemMinimizeToSystemTray.Checked = settingsForm.MinimizeToSystemTray;
				}
			}
			if (menuitemStayOnTop.Checked)
			{
				TopMost = true;
			}
		}

		#endregion

		#region DoubleClick event handlers

		/// <summary>
		/// Open the main window from the notify icon
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void NotifyIcon_DoubleClick(object sender, EventArgs e)
		{
			Show();
			WindowState = FormWindowState.Normal;
			notifyIcon.Visible = false;
		}

		#endregion

		#region CheckedChanged event handlers

		/// <summary>
		/// Set window in foreground if the option "stay on top" is enabled
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void MenuitemStayOnTop_CheckedChanged(object sender, EventArgs e) => TopMost = menuitemStayOnTop.Checked;

		#endregion

		#region Resize event handlers

		/// <summary>
		/// If the option 'minimize to system tray' is enabled, minimize to system tray
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void MainForm_Resize(object sender, EventArgs e)
		{
			if (WindowState == FormWindowState.Minimized)
			{
				if (menuitemMinimizeToSystemTray.Checked)
				{
					Hide();
					notifyIcon.Visible = true;
				}
			}
		}

		#endregion

		#region FileSystemWatcher event handlers

		/// <summary>
		/// Update information about the disk using FileSystemWatcher event
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void FileSystemWatcher_Created(object sender, FileSystemEventArgs e) => UpdateSpaceInfo();

		/// <summary>
		/// Update information about the disk using FileSystemWatcher event
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void FileSystemWatcher_Changed(object sender, FileSystemEventArgs e) => UpdateSpaceInfo();

		/// <summary>
		/// Update information about the disk using FileSystemWatcher event
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void FileSystemWatcher_Deleted(object sender, FileSystemEventArgs e) => UpdateSpaceInfo();

		/// <summary>
		/// Update information about the disk using FileSystemWatcher event
		/// </summary>
		/// <param name="sender">object sender</param>
		/// <param name="e">event arguments</param>
		/// <remarks>The parameters <paramref name="e"/> and <paramref name="sender"/> are not needed, but must be indicated.</remarks>
		private void FileSystemWatcher_Renamed(object sender, RenamedEventArgs e) => UpdateSpaceInfo();

		#endregion
	}
}