
#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.Windows.Forms;
using CodeImp.DoomBuilder.Map;
using CodeImp.DoomBuilder.Rendering;
using System.Drawing;
using CodeImp.DoomBuilder.Config;

#endregion

namespace CodeImp.DoomBuilder.BuilderModes
{
	[FindReplace("Thing Type", BrowseButton = true)]
	internal class FindThingType : BaseFindThing
	{
		#region ================== Constants

		#endregion

		#region ================== Variables

		#endregion

		#region ================== Properties

		public override Presentation RenderPresentation { get { return Presentation.Things; } }
		public override Image BrowseImage { get { return Properties.Resources.List; } }

		//mxd. Prefixes usage
		public override string UsageHint
		{
			get
			{
				return "Supported prefixes:" + System.Environment.NewLine
				   + "\"<=\" for values less or equal to given value;" + System.Environment.NewLine
				   + "\">=\" for values greater or equal to given value;" + System.Environment.NewLine
				   + "\"<\" for values less than given value;" + System.Environment.NewLine
				   + "\">\" for values greater than given value." + System.Environment.NewLine
				   + "\"!\" or \"!=\" for values not equal to given value.";
			}
		}

		#endregion

		#region ================== Constructor / Destructor

		#endregion

		#region ================== Methods

		// This is called when the browse button is pressed
		public override string Browse(string initialvalue)
		{
			int type;
			int.TryParse(initialvalue, out type);
			type = General.Interface.BrowseThingType(BuilderPlug.Me.FindReplaceForm, type);
			return type.ToString();
		}


		// This is called to perform a search (and replace)
		// Returns a list of items to show in the results list
		// replacewith is null when not replacing
		public override FindReplaceObject[] Find(string value, bool withinselection, bool replace, string replacewith, bool keepselection)
		{
			List<FindReplaceObject> objs = new List<FindReplaceObject>();

			// Interpret the replacement
			int replacetype = 0;
			if(replace)
			{
				// If it cannot be interpreted, set replacewith to null (not replacing at all)
				if(!int.TryParse(replacewith, out replacetype)) replacewith = null;
				if(replacetype < 0) replacewith = null;
				if(replacetype > Int16.MaxValue) replacewith = null;
				if(replacewith == null)
				{
					MessageBox.Show("Invalid replace value for this search type!", "Find and Replace", MessageBoxButtons.OK, MessageBoxIcon.Error);
					return objs.ToArray();
				}
			}

			// Check for comparison operators
			string comparer = "";
			if (value[0].ToString() == ">" || value[0].ToString() == "<" || value[0].ToString() == "!")
			{
				comparer = value.Substring(0, 1);
				if (value.Length > 1)
					if (value[1].ToString() == "=")
						comparer = value.Substring(0, 2);
				value = value.Remove(0, comparer.Length);
			}

			if (value.Length == 0)
				return objs.ToArray();

			// Interpret the number given
			int findtype;
			if(int.TryParse(value, out findtype))
			{
				// Where to search?
				ICollection<Thing> list = withinselection ? General.Map.Map.GetSelectedThings(true) : General.Map.Map.Things;

				// Go for all things
				foreach(Thing t in list)
				{
					// Match?
					if ((t.SRB2Type == findtype && comparer.ToString() == "") ||
						(t.SRB2Type > findtype && comparer.ToString() == ">") ||
						(t.SRB2Type < findtype && comparer.ToString() == "<") ||
						(t.SRB2Type >= findtype && comparer.ToString() == ">=") ||
						(t.SRB2Type <= findtype && comparer.ToString() == "<=") ||
						(t.SRB2Type != findtype && (comparer.ToString() == "!" || comparer.ToString() == "!=")))
					{
						// Replace
						if(replace)
						{
							t.SRB2Type = replacetype;
							t.UpdateConfiguration();
						}
						
						// Add to list
						ThingTypeInfo ti = General.Map.Data.GetThingInfo(t.SRB2Type);
						objs.Add(new FindReplaceObject(t, "Thing " + t.Index + " (" + ti.Title + ")"));
					}
				}
			}
			
			return objs.ToArray();
		}

		#endregion
	}
}
