using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using VEPROMS.CSLA.Library;

namespace Volian.Controls.Library
{
	public partial class DisplayFoldoutMaint : UserControl
	{
		private ItemInfo _MyItemInfo;
		public ItemInfo MyItemInfo
		{
			get { return _MyItemInfo; }
			set 
			{ 
				_MyItemInfo = value;
				_MainStepSection = null;
				FillInControls();
			}
		}
		private SectionInfo _MainStepSection;
		public SectionInfo MainStepSection
		{
			get
			{
				if (_MainStepSection == null)
				{
					foreach (SectionInfo si in MyItemInfo.MyProcedure.Sections)
					{
						SectionConfig sc = (SectionConfig)si.MyConfig;
						if (sc.Section_OriginalSteps == "Y") _MainStepSection = si;
					}
				}
				return _MainStepSection;
			}
		}
		private ItemInfo _firstStep;
		private ItemInfo _lastStep;
		public DisplayFoldoutMaint()
		{
			InitializeComponent();
			FillInControls();
		}

		private void FillInControls()
		{


			// for this iteminfo, get the procedure and then the list of sections.  For any section, starting with 
			// Foldout, add it to list:
			if (MyItemInfo != null)
			{
				ProcedureInfo pi = MyItemInfo.MyProcedure;
				listBoxFoldouts.Items.Clear();
				lvSteps.Items.Clear();
				foreach (SectionInfo si in pi.Sections)
					if (si.DisplayText.ToUpper().StartsWith("FOLDOUT"))listBoxFoldouts.Items.Add(si);
				if (listBoxFoldouts.Items.Count > 0) listBoxFoldouts.SelectedIndex = 0;
				else
				{
					listBoxFoldouts.Items.Add("No Foldouts Exist");
					return;
				}

				// find default step section & use its steps to fill in tree.
				
				ItemInfo startitm = MainStepSection.Steps != null && MainStepSection.Steps.Count > 0 ? MainStepSection.Steps[0] : null;
				while (startitm != null)
				{
					lvSteps.Items.Add(startitm.ToString());
					lvSteps.Items[lvSteps.Items.Count - 1].Tag = startitm;
					startitm = (startitm.NextItem != null && startitm.NextItems.Count > 0 ? startitm.NextItems[0] : null);
				}
			}
			ColorFoldoutSelection();
		}
		private void ColorFoldoutSelection()
		{
			if (MyItemInfo == null) return;
			if (listBoxFoldouts.Items[0].ToString() == "No Foldouts Exist") return;
			SectionInfo foldOutselected = listBoxFoldouts.Items[listBoxFoldouts.SelectedIndex] as SectionInfo;
			ItemInfo tmpStep = null; // keep track of previous step, so can set _lastStep;
			for (int i = 0; i<lvSteps.Items.Count;i++)
			{

				ItemInfo ii = lvSteps.Items[i].Tag as ItemInfo;
				StepConfig sc = ii.MyConfig as StepConfig;
				_firstStep = null;
				_lastStep = null;
				if (sc != null)
				{
					if (sc.Step_FloatingFoldout == foldOutselected.ItemID)
					{
						if (_firstStep == null) _firstStep = ii;
						tmpStep = ii;
						lvSteps.Items[i].BackColor = Color.Aquamarine;
					}
					else
						lvSteps.Items[i].BackColor = lvSteps.BackColor;
				}
			}
			_lastStep = tmpStep;
		}

		private void listBoxFoldouts_SelectedIndexChanged(object sender, EventArgs e)
		{
			ColorFoldoutSelection();
			lblStepSelect.Text = "Select First Step";
		}
		private int _firstIndexForSelect = -1;
		private void lvSteps_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (lvSteps.SelectedIndices == null || lvSteps.SelectedIndices.Count == 0) return;
			if (lblStepSelect.Text.Contains("Select First Step"))
			{
				// clear out background from list, and change label for instruct.,
				// also set _firstStep to this one.
				for (int i = 0; i < lvSteps.Items.Count; i++) lvSteps.Items[i].BackColor = lvSteps.BackColor;
				lblStepSelect.Text = "Select Last Step";
				_firstIndexForSelect = lvSteps.SelectedIndices[0];
				_firstStep = (ItemInfo)lvSteps.Items[_firstIndexForSelect].Tag;
			}
			else
			{
				int lastind = lvSteps.SelectedIndices[0];
				_lastStep = (ItemInfo)lvSteps.Items[lastind].Tag;
				for (int i = _firstIndexForSelect; i < lastind; i++)
					lvSteps.Items[i].BackColor = Color.Aquamarine;
				lblStepSelect.Text = "Save or ReSelect First Step";
			}
		}

		private void btnSave_Click(object sender, EventArgs e)
		{
			lblStepSelect.Text = "Select First Step";
			// for all selected steps, set their cofig floating foldout item to
			// the selected foldout.
			bool sav = false;
			SectionInfo foldOutselected = listBoxFoldouts.Items[listBoxFoldouts.SelectedIndex] as SectionInfo;

			foreach (ItemInfo ii in MainStepSection.Steps)
			{
				if (ii.ItemID == _firstStep.ItemID)
					sav = true;
				if (sav)
				{
					StepConfig sc = ii.MyConfig as StepConfig;
					sc.Step_FloatingFoldout = foldOutselected.ItemID;
					using (Item itm = ii.Get())
					{
						itm.MyContent.Config = sc.ToString();
						itm.MyContent.DTS = DateTime.Now;
						itm.MyContent.UserID = Volian.Base.Library.VlnSettings.UserID;
						itm.Save();
					}
					if (ii.ItemID == _lastStep.ItemID) sav = false;
				}
			}

		}
	}
}