From: Gaurav Vaish <gvaish@mono-cvs.ximian.com>
Date: Sun, 16 Dec 2001 18:17:35 +0000 (-0000)
Subject: 2001-12-17    Gaurav Vaish <Gvaish@iitk.ac.in>
X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=commitdiff_plain;h=ef8bc3930f89f03cb77217d89056d7f5871c9398;p=mono.git

2001-12-17    Gaurav Vaish <Gvaish@iitk.ac.in>

* PropertyConverter   -- I needed it. Completed
* Utils               -- Also needed this. Initial implementation

svn path=/trunk/mcs/; revision=1593
---

diff --git a/mcs/class/System.Web/System.Web.UI/PropertyConverter.cs b/mcs/class/System.Web/System.Web.UI/PropertyConverter.cs
new file mode 100644
index 00000000000..84d62f08701
--- /dev/null
+++ b/mcs/class/System.Web/System.Web.UI/PropertyConverter.cs
@@ -0,0 +1,124 @@
+/**
+ * Namespace: System.Web.UI
+ * Class:     PropertyConverter
+ * 
+ * Author:  Gaurav Vaish
+ * Maintainer: gvaish@iitk.ac.in
+ * Implementation: yes
+ * Contact: <gvaish@iitk.ac.in>
+ * Status:  100%
+ * 
+ * (C) Gaurav Vaish (2001)
+ */
+
+using System;
+using System.ComponentModel;
+using System.Globalization;
+using System.Reflection;
+
+namespace System.Web.UI
+{
+	public sealed class PropertyConverter
+	{
+		private static Type[] parseMethodTypes;
+		private static Type[] parseMethodTypesWithSOP;
+		
+		private static PropertyConverter()
+		{
+			parseMethodTypes = new Type[1];
+			parseMethodTypes[0] = typeof(string);
+			parseMethodTypesWithSOP = new Type[2];
+			parseMethodTypesWithSOP[0] = typeof(string);
+			parseMethodTypesWithSOP[1] = typeof(IServiceProvider);
+		}
+		
+		private PropertyConverter()
+		{
+			// Prevent any instance
+		}
+		
+		public static object EnumFromString(Type enumType, string enumValue)
+		{
+			object retVal = null;
+			try
+			{
+				retVal = Enum.Parse(enumType, enumValue, true);
+			} catch(Exception e)
+			{
+				retVal = null;
+			}
+			return retVal;
+		}
+		
+		public static string EnumToString(Type enumType, object enumValue)
+		{
+			string retVal = Enum.Format(enumType, enumValue, "G");
+			return retVal.Replace('_','-');
+		}
+		
+		public static object ObjectFromString(Type objType, MemberInfo propertyInfo, string objValue)
+		{
+			if(objValue == null)
+				return null;
+			if(! (!objType.Equals(typeof(Boolean)) || objValue.Length > 0) )
+			{
+				return null;
+			}
+			if(enumType.IsEnum)
+			{
+				return EnumFromString(objType, objValue);
+			}
+			if(enumType.Equals(typeof(string)))
+			{
+				return objValue;
+			}
+			PropertyDescriptor pc = null;
+			if(propertyInfo != null)
+			{
+				pc = (TypeDesctiptor.GetProperties(propertyInfo.ReflectedType))[propertyInfo.Name];
+			}
+			if(pc != null)
+			{
+				TypeConverter converter = pc.Converter;
+				if(converter!=null && conveter.CanConverFrom(typeof(string)))
+				{
+					return converter.ConvertFromInvariantString(objValue);
+				}
+			}
+			MethodInfo mi = objType.GetMethod("Parse", parseMethodTypesWithSOP);
+			object o = null;
+			if(mi != null)
+			{
+				object[] parameters = new object[2];
+				parameters[0] = objValue;
+				parameters[1] = CultureInfo.InvariantCulture;
+				try
+				{
+					o = Util.InvokeMethod(propertyInfo, null, parameters);
+				} catch(Exception e)
+				{
+				}
+			}
+			if(o == null)
+			{
+				mi = objType.GetMethod("Parse", parseMethodTypes);
+				if(mi!=null)
+				{
+					object[] parameters = new object[1];
+					parameters[0] = objValue;
+					try
+					{
+						o = Util.InvokeMethod(propertyInfo, null, parameters);
+					} catch(Exception e)
+					{
+					}
+				}
+			}
+			if(o == null)
+			{
+				throw new HttpException(HttpRuntime.FormatResourceString("Type_not_creatable_from_string", objType.FullName, objValue, propertyInfo.Name);
+			}
+			return o;
+		}
+	}
+}
diff --git a/mcs/class/System.Web/System.Web.UI/Utils.cs b/mcs/class/System.Web/System.Web.UI/Utils.cs
new file mode 100644
index 00000000000..e696e75e44d
--- /dev/null
+++ b/mcs/class/System.Web/System.Web.UI/Utils.cs
@@ -0,0 +1,34 @@
+/**
+ * Namespace: System.Web.UI
+ * Class:     Utils
+ * 
+ * Author:  Gaurav Vaish
+ * Maintainer: gvaish@iitk.ac.in
+ * Implementation: yes
+ * Contact: <gvaish@iitk.ac.in>
+ * Status:  ?%
+ * 
+ * (C) Gaurav Vaish (2001)
+ */
+
+using System;
+using System.Reflection;
+
+namespace System.Web.UI
+{
+	private class Utils
+	{
+		internal static object InvokeMethod(MethodInfo info, object obj, object[] parameters)
+		{
+			object retVal = null;
+			try
+			{
+				retVal = info.Invoke(obj, parameters);
+			} catch(TargetInvocationException tie)
+			{
+				throw tie.InnerException;
+			}
+			return retVal;
+		}
+	}
+}