templatetypeconverter.cs

来自「SharpDevelop2.0.0 c#开发免费工具」· CS 代码 · 共 80 行

// <file>
//     <copyright see="prj:///doc/copyright.txt"/>
//     <license see="prj:///doc/license.txt"/>
//     <owner name="Mike Krüger" email="[e-mail]"/>
//     <version>$Revision: 915 $</version>
// </file>

using System;
using System.Collections;
using System.ComponentModel;
using System.Globalization;
using System.Resources;
using System.Reflection;
using System.Drawing;
using System.Drawing.Design;
using ICSharpCode.SharpDevelop.Internal.Templates;

namespace ICSharpCode.SharpDevelop.Gui
{
	public class CustomTypeConverter : TypeConverter
	{
		TemplateType templateType;
		
		public CustomTypeConverter(TemplateType templateType)
		{
			this.templateType = templateType;
		}
		
		public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
		{
			return sourceType == typeof(string);
		}
		public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
		{
			return destinationType == typeof(string);
		}
		
		public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
		{
			return true;
		}
		public override  bool GetStandardValuesExclusive(ITypeDescriptorContext context)
		{
			return true;
		}
		
		public override System.ComponentModel.TypeConverter.StandardValuesCollection GetStandardValues(System.ComponentModel.ITypeDescriptorContext context)
		{
			// Passes the local integer array.
			ArrayList values = new ArrayList();
			foreach (DictionaryEntry entry in templateType.Pairs) {
				values.Add(entry.Key);
			}
			StandardValuesCollection svc = new StandardValuesCollection(values);
			return svc;
		}
		
		// Overrides the ConvertFrom method of TypeConverter.
		public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) 
		{
			
			if (templateType.Pairs[value] != null) {
				return templateType.Pairs[value];
			}
			return value.ToString();
		}
		
		// Overrides the ConvertTo method of TypeConverter.
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
		{
			foreach (DictionaryEntry entry in templateType.Pairs) {
				if (entry.Value.ToString() == value.ToString()) {
					return entry.Key;
				}
			}
			return value.ToString();
		}
	}
}