#region ================== Copyright (c) 2007 Pascal vd Heiden

/*
 * Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
 * This program is released under GNU General Public License
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 */

#endregion

#region ================== Namespaces

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;
using System.Diagnostics;
using CodeImp.DoomBuilder.Actions;
using CodeImp.DoomBuilder.Data;
using CodeImp.DoomBuilder.Config;
using CodeImp.DoomBuilder.Rendering;
using SlimDX.Direct3D9;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using CodeImp.DoomBuilder.Map;
using System.Globalization;

#endregion

namespace CodeImp.DoomBuilder.Controls
{
	public partial class FieldsEditorControl : UserControl
	{
		// Constants
		private const string ADD_FIELD_TEXT = "   (click to add custom field)";
		
		// Constructor
		public FieldsEditorControl()
		{
			InitializeComponent();

			// Make types list
			fieldtype.Items.Clear();
			fieldtype.Items.AddRange(General.Types.GetCustomUseAttributes());
		}

		// This adds a list of fixed fields (in undefined state)
		public void ListFixedFields(List<UniversalFieldInfo> list)
		{
			// Add all fields
			foreach(UniversalFieldInfo uf in list)
				fieldslist.Rows.Add(new FieldsEditorRow(fieldslist, uf));

			// Update new row
			SetupNewRowStyle();
		}

		// This sets up the new row
		private void SetupNewRowStyle()
		{
			// Show text for new row
			fieldslist.Rows[fieldslist.NewRowIndex].Cells[0].Value = ADD_FIELD_TEXT;
			fieldslist.Rows[fieldslist.NewRowIndex].Cells[0].Style.ForeColor = SystemColors.GrayText;
			fieldslist.Rows[fieldslist.NewRowIndex].Cells[0].ReadOnly = false;
			
			// Make sure user can only enter property name in a new row
			fieldslist.Rows[fieldslist.NewRowIndex].Cells[1].ReadOnly = true;
			fieldslist.Rows[fieldslist.NewRowIndex].Cells[2].ReadOnly = true;
		}
		
		// Resized
		private void FieldsEditorControl_Resize(object sender, EventArgs e)
		{
			// Rearrange controls
			fieldslist.Size = this.ClientSize;
			fieldvalue.Width = fieldslist.ClientRectangle.Width - fieldname.Width - fieldtype.Width - SystemInformation.VerticalScrollBarWidth - 10;
		}

		// Layout change
		private void FieldsEditorControl_Layout(object sender, LayoutEventArgs e)
		{
			FieldsEditorControl_Resize(sender, EventArgs.Empty);
		}

		// Cell clicked
		private void fieldslist_CellClick(object sender, DataGridViewCellEventArgs e)
		{
			// Edit immediately
			if(fieldslist.SelectedCells.Count > 0) fieldslist.BeginEdit(true);
		}

		// User deletes a row
		private void fieldslist_UserDeletingRow(object sender, DataGridViewRowCancelEventArgs e)
		{
			// Get the row
			FieldsEditorRow row = e.Row as FieldsEditorRow;
			
			// Fixed field?
			if(row.IsFixed)
			{
				// Just undefine the field
				row.Undefine();
				e.Cancel = true;
			}
		}

		// User selects a cell for editing
		private void fieldslist_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
		{
			// Property cell?
			if(e.ColumnIndex == 0)
			{
				// New row index?
				if(e.RowIndex == fieldslist.NewRowIndex)
				{
					// Remove all text
					fieldslist.Rows[e.RowIndex].Cells[0].Style.ForeColor = SystemColors.WindowText;
					fieldslist.Rows[e.RowIndex].Cells[0].Value = "";
				}
			}
		}

		// Done editing cell contents
		private void fieldslist_CellEndEdit(object sender, DataGridViewCellEventArgs e)
		{
			FieldsEditorRow frow = null;
			DataGridViewRow row = null;
			
			// Get the row
			row = fieldslist.Rows[e.RowIndex];
			if(row is FieldsEditorRow) frow = row as FieldsEditorRow;
			
			// Renaming a field?
			if(e.ColumnIndex == 0)
			{
				// Row is a new row?
				if(frow == null)
				{
					// Valid property name given?
					if((row.Cells[0].Value != null) && (row.Cells[0].Value.ToString().Trim().Length > 0))
					{
						// Make new row
						frow = new FieldsEditorRow(fieldslist, row.Cells[0].Value.ToString().Trim(), 0, 0);
						frow.Visible = false;
						fieldslist.Rows.Insert(e.RowIndex + 1, frow);
					}
					
					// Mark the row for delete
					row.ReadOnly = true;
					deleterowstimer.Start();
				}
			}
			// Changing field value?
			if((e.ColumnIndex == 2) && (frow != null))
			{
				// Defined?
				if((row.Cells[2].Value != null) && (!frow.IsFixed || (frow.Info.Default != row.Cells[2].Value)))
					frow.Define(row.Cells[2].Value);
				else if(frow.IsFixed)
					frow.Undefine();
			}
			
			// Updated
			if(frow != null) frow.CellChanged();
			
			// Update button
			UpdateBrowseButton();
		}

		// Time to delete rows
		private void deleterowstimer_Tick(object sender, EventArgs e)
		{
			// Stop timer
			deleterowstimer.Stop();
			
			// Delete all rows that must be deleted
			for(int i = fieldslist.Rows.Count - 1; i >= 0; i--)
			{
				if(fieldslist.Rows[i].ReadOnly)
					try { fieldslist.Rows.RemoveAt(i); } catch(Exception) { }
				else
					fieldslist.Rows[i].Visible = true;
			}

			// Update new row
			SetupNewRowStyle();
			
			// Update button
			UpdateBrowseButton();
		}

		// Selection changes
		private void fieldslist_SelectionChanged(object sender, EventArgs e)
		{
			// Update button
			UpdateBrowseButton();
		}
		
		// This updates the button
		private void UpdateBrowseButton()
		{
			FieldsEditorRow frow = null;
			DataGridViewRow row = null;

			// Any row selected?
			if(fieldslist.SelectedRows.Count > 0)
			{
				// Get selected row
				row = fieldslist.SelectedRows[0];
				if(row is FieldsEditorRow) frow = row as FieldsEditorRow;
				
				// Not the new row and FieldsEditorRow available?
				if((row.Index < fieldslist.NewRowIndex) && (frow != null))
				{
					// Browse button available for this type?
					if(frow.TypeHandler.IsBrowseable)
					{
						Rectangle cellrect = fieldslist.GetCellDisplayRectangle(2, row.Index, false);

						// Show button
						browsebutton.Location = new Point(cellrect.Right - browsebutton.Width, cellrect.Top);
						browsebutton.Height = cellrect.Height;
						browsebutton.Visible = true;

						/*
						// Determine image/text
						if((frow.Type == UniversalFieldType.SectorEffect) ||
						   (frow.Type == UniversalFieldType.LinedefAction))
						{
							browsebutton.Image = CodeImp.DoomBuilder.Properties.Resources.treeview;
							browsebutton.Text = "";
						}
						else
						{
							browsebutton.Image = null;
							browsebutton.Text = "...";
						}
						*/
					}
					else
					{
						browsebutton.Visible = false;
					}
				}
				else
				{
					browsebutton.Visible = false;
				}
			}
			else
			{
				browsebutton.Visible = false;
			}
		}

		private void fieldslist_DataError(object sender, DataGridViewDataErrorEventArgs e)
		{
			e.ThrowException = false;
		}
	}
}