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

namespace WinApp
{
	public partial class frmAssignmentSelect : Form
	{
		Group _grp;
		FolderTreeNode _topnode;
		public frmAssignmentSelect(Group grp)
		{
			InitializeComponent();
			_grp = grp;
			this.Text = grp.GroupName + " Assignments";
			//_grp.BeginEdit();// Push
			_topnode = FolderTreeNode.BuildTreeList();
			tvFolder.Nodes.Add(_topnode);
			tvFolder.Nodes[0].Expand();
			roleInfoListBindingSource.DataSource = RoleInfoList.Get();
			//Initialize cmbRoles
			if (grp.GroupAssignments.Count > 0)
			{
				int rid = grp.GroupAssignments[0].RID;
				cmbRoles.SelectedValue = rid;
				SetupFolders(rid);
			}
		}
		private void BeforeFormClosing(object sender, FormClosingEventArgs e)
		{
			e.Cancel = (SaveAsNeeded() == DialogResult.Cancel);
		}
		private DialogResult SaveAsNeeded()
		{
			return DialogResult.Yes;
		}
		private void btnOK_Click(object sender, EventArgs e)
		{
			// This should save the changes to _grp.GroupAssignments
			_grp.ApplyEdit(); //Apply
		}

		private void btnCancel_Click(object sender, EventArgs e)
		{
			// This should throw away any changes to _grp.GroupAssignments
			_grp.CancelEdit();// Pop
		}

		private void btnRoles_Click(object sender, EventArgs e)
		{
			// TODO: Maybe should not be able to do this if unsaved data
			frmRoles fr = new frmRoles();
			fr.ShowDialog();
			roleInfoListBindingSource.DataSource = RoleInfoList.Get();
		}

		private void tvFolder_BeforeCheck(object sender, TreeViewCancelEventArgs e)
		{
			if(!bSetup)
			{
				FolderTreeNode ftn = (FolderTreeNode)e.Node;
				if (!ftn.Checked)
				{
					MessageBox.Show("Conversion Error");
					//_grp.GroupAssignments.Add(int.Parse(cmbRoles.SelectedValue.ToString()), ftn.FolderInfo.FolderID);
				}
				else
				{
					MessageBox.Show("Conversion Error");
					//TODO: KBR _grp.GroupAssignments.Remove(ftn.FolderInfo.FolderID, int.Parse(cmbRoles.SelectedValue.ToString()));
				}
			}
		}

		private void cmbRoles_SelectedValueChanged(object sender, EventArgs e)
		{
			if (cmbRoles.SelectedIndex >= 0)
			{
				int rid = int.Parse(cmbRoles.SelectedValue.ToString());
				SetupFolders(rid);
			}
		}
		private bool bSetup = false;
		private void ResetTree(TreeNodeCollection tc)
		{
			foreach(TreeNode tn in tc)
			{
				tn.Checked=false;
				if(tn.Nodes != null)ResetTree(tn.Nodes);
			}
		}
		private void SetupFolders(int rid)
		{
			bSetup=true;
			ResetTree(tvFolder.Nodes);
			foreach(GroupAssignment ga in _grp.GroupAssignments)
			{
				if (ga.RID == rid)
					_topnode.FindTreeNode(ga.FolderID).Checked = true;
			}
			bSetup=false;
		}
	}
}