using System;
using System.Windows.Forms;
using log4net;
using TBF.Resources;
using TBF.UiControls;

namespace TBF
{
	public partial class ProceduresDlg : Form
	{
		static readonly ILog log = LogManager.GetLogger(typeof(ProceduresDlg));

		/// Used when re-scaling the dialog: 100% = 96dpi, 125% = 120dpi, 150% = 144dpi
		public readonly int Dpi;
		public const int Dpi100pct = 96;

		bool unlocked;

		public ProceduresDlg()
		{
			/// Detect display setting: 100% = 96dpi, 125% = 120dpi, 150% = 144dpi.
			Dpi = (int)this.CreateGraphics().DpiX;

			InitializeComponent();

			/// SharedDlgButtons configuration
			sharedButtons.RequiredGroupMembership = Grp.GID.Metrologists;
			sharedButtons.OptionalButtons = SharedButtons.Buttons.Add | SharedButtons.Buttons.Remove |
											SharedButtons.Buttons.Up | SharedButtons.Buttons.Down |
											SharedButtons.Buttons.Edit | SharedButtons.Buttons.Copy;

			sharedButtons.Unlocked += Unlocked;
			sharedButtons.OKClicked += okButton_Click;
			sharedButtons.CancelClicked += cancelButton_Click;
			sharedButtons.AddClicked += addButton_Click;
			sharedButtons.RemoveClicked += removeButton_Click;
			sharedButtons.UpClicked += upButton_Click;
			sharedButtons.DownClicked += downButton_Click;
			sharedButtons.EditClicked += proceduresCtrl.editButton_Click;
			sharedButtons.CopyClicked += proceduresCtrl.copyButton_Click;
		}

		private void ProceduresDlg_Load(object sender, EventArgs e)
		{
			Text = Strings.Procedures;
			proceduresCtrl.Initialize(this, splitContainer.Panel1);
		}

        /// <summary>
        /// Called from ProceduresCtrl when item editing is completed with OK.
        /// Authorisation occurs in the editted ProcedureDlg dialog.
        /// </summary>
        public void Unlock()
        {
            sharedButtons.UnlockButtons();
            unlocked = true;
            proceduresCtrl.Unlock();
        }

        /// <summary>
        /// Called from sharedButtons when user clicks 'Unlock' button an is authorised.
        /// </summary>
		private void Unlocked(object sender, EventArgs e)
		{
			unlocked = true;
			proceduresCtrl.Unlock();
		}

		private void okButton_Click(object sender, EventArgs e)
		{
			proceduresCtrl.OkBtnClicked();
			DialogResult = DialogResult.OK;
			Close();
		}

		private void cancelButton_Click(object sender, EventArgs e)
		{
			proceduresCtrl.CancelBtnClicked();
			DialogResult = DialogResult.Cancel;
			Close();
		}

		private void addButton_Click(object sender, EventArgs e)
		{
			proceduresCtrl.AddOne();
		}

		private void removeButton_Click(object sender, EventArgs e)
		{
			proceduresCtrl.RemoveSelected();
		}

		private void upButton_Click(object sender, EventArgs e)
		{
			proceduresCtrl.MoveUpSelected();
		}

		private void downButton_Click(object sender, EventArgs e)
		{
			proceduresCtrl.MoveDownSelected();
		}

		private void proceduresCtrl_MouseDoubleClick(object sender, MouseEventArgs e)
		{
			proceduresCtrl.editButton_Click(sender, e);
		}

		/// <summary>
		/// Common part for three xxxListViewEx_SelectedIndexChanged event handlers
		/// </summary>
		/// <param name="listViewEx"></param>
		void SelectedIndexChanged(object sender, EventArgs e)
		{
			ListViewEx listViewEx = sender as ListViewEx;
			if (listViewEx.SelectedItems.Count != 1)
			{
				/// No item selected
				sharedButtons.DisableButtons(SharedButtons.Buttons.Remove | SharedButtons.Buttons.Up | SharedButtons.Buttons.Down);
			}
			else if (listViewEx.Items.Count == 1)
			{
				/// One (the first and the last) item selected
				sharedButtons.EnableButtons(SharedButtons.Buttons.Remove);
				sharedButtons.DisableButtons(SharedButtons.Buttons.Up | SharedButtons.Buttons.Down);
			}
			else if (listViewEx.SelectedIndices[0] == 0)
			{
				/// The first of many items selected
				sharedButtons.EnableButtons(SharedButtons.Buttons.Remove | SharedButtons.Buttons.Down);
				sharedButtons.DisableButtons(SharedButtons.Buttons.Up);
			}
			else if (listViewEx.SelectedIndices[0] == (listViewEx.Items.Count - 1))
			{
				/// The last of many items selected
				sharedButtons.EnableButtons(SharedButtons.Buttons.Remove | SharedButtons.Buttons.Up);
				sharedButtons.DisableButtons(SharedButtons.Buttons.Down);
			}
			else
			{
				/// One of middle items selected
				sharedButtons.EnableButtons(SharedButtons.Buttons.Remove | SharedButtons.Buttons.Up | SharedButtons.Buttons.Down);
			}
		}

		public void UpdateButtonStates(SharedButtons.SelectedItemPos selectedItemPos)
		{
			if (selectedItemPos == SharedButtons.SelectedItemPos.None)
			{
				sharedButtons.DisableButtons(SharedButtons.Buttons.Remove | SharedButtons.Buttons.Up | SharedButtons.Buttons.Down);
			}
		}
	}
}