booleantypeconverter.cs

来自「全功能c#编译器」· CS 代码 · 共 69 行

using System;
using System.ComponentModel;
using System.Globalization;
using System.Resources;
using System.Reflection;

using ICSharpCode.Core.Services;

namespace ICSharpCode.SharpDevelop.Gui.Components
{
	public class BooleanTypeConverter : TypeConverter
	{
		string True {
			get {
				StringParserService stringParserService = (StringParserService)ServiceManager.Services.GetService(typeof(StringParserService));
				return stringParserService.Parse("${res:ICSharpCode.SharpDevelop.Gui.Components.BooleanTypeConverter.TrueString}");
			}
		}
		string False {
			get {
				StringParserService stringParserService = (StringParserService)ServiceManager.Services.GetService(typeof(StringParserService));
				return stringParserService.Parse("${res:ICSharpCode.SharpDevelop.Gui.Components.BooleanTypeConverter.FalseString}");
			}
		}
		
		public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
		{
			return sourceType == typeof(bool) || sourceType == typeof(string);
		}
		public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
		{
			return destinationType == typeof(bool) || 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)
		{
			return new StandardValuesCollection(new object[] { True, False });
		}
		
		// Overrides the ConvertFrom method of TypeConverter.
		public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) 
		{
			if (value is string) {
				return value.ToString() == True;
			}
			return value;
		}
		
		// Overrides the ConvertTo method of TypeConverter.
		public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
		{
			if (value is bool) {
				return ((bool)value) ? True : False;
			}
			return value;
		}
	}
}