// SharpDevelop samples
// Copyright (c) 2006, AlphaSierraPapa
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this list
//   of conditions and the following disclaimer.
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// - Redistributions in binary form must reproduce the above copyright notice, this list
//   of conditions and the following disclaimer in the documentation and/or other materials
//   provided with the distribution.
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// - Neither the name of the SharpDevelop team nor the names of its contributors may be used to
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using System;
using System.Collections.Generic;
using System.Windows.Forms;
using ICSharpCode.Core;
using ICSharpCode.SharpDevelop;

namespace LineCounterAddin
{
	// Helper class for improvement 1
	
	/// <summary>
	/// To minimize changes to LineCounterBrowser, we are
	/// using this helper class to load images from SharpDevelop's
	/// IconService into our image list on demand.
	/// </summary>
	public class ImageListHelper
	{
		ImageList imageList;
		Dictionary<string, int> dict = new Dictionary<string, int>();
		
		public ImageListHelper(ImageList imageList)
		{
			if (imageList == null)
				throw new ArgumentNullException("imageList");
			this.imageList = imageList;
		}
		
		public int GetIndex(string imageName)
		{
			int index;
			if (!dict.TryGetValue(imageName, out index)) {
				index = imageList.Images.Count;
				imageList.Images.Add(IconService.GetBitmap(imageName));
				dict[imageName] = index;
			}
			return index;
		}
	}
}