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 (file)
index 0000000..84d62f0
--- /dev/null
+++ b/mcs/class/System.Web/System.Web.UI/PropertyConverter.cs
@@ -0,0 +1,124 @@
+/**\r
+ * Namespace: System.Web.UI\r
+ * Class:     PropertyConverter\r
+ * \r
+ * Author:  Gaurav Vaish\r
+ * Maintainer: gvaish@iitk.ac.in\r
+ * Implementation: yes\r
+ * Contact: <gvaish@iitk.ac.in>\r
+ * Status:  100%\r
+ * \r
+ * (C) Gaurav Vaish (2001)\r
+ */\r
+\r
+using System;\r
+using System.ComponentModel;\r
+using System.Globalization;\r
+using System.Reflection;\r
+\r
+namespace System.Web.UI\r
+{\r
+       public sealed class PropertyConverter\r
+       {\r
+               private static Type[] parseMethodTypes;\r
+               private static Type[] parseMethodTypesWithSOP;\r
+               \r
+               private static PropertyConverter()\r
+               {\r
+                       parseMethodTypes = new Type[1];\r
+                       parseMethodTypes[0] = typeof(string);\r
+                       parseMethodTypesWithSOP = new Type[2];\r
+                       parseMethodTypesWithSOP[0] = typeof(string);\r
+                       parseMethodTypesWithSOP[1] = typeof(IServiceProvider);\r
+               }\r
+               \r
+               private PropertyConverter()\r
+               {\r
+                       // Prevent any instance\r
+               }\r
+               \r
+               public static object EnumFromString(Type enumType, string enumValue)\r
+               {\r
+                       object retVal = null;\r
+                       try\r
+                       {\r
+                               retVal = Enum.Parse(enumType, enumValue, true);\r
+                       } catch(Exception e)\r
+                       {\r
+                               retVal = null;\r
+                       }\r
+                       return retVal;\r
+               }\r
+               \r
+               public static string EnumToString(Type enumType, object enumValue)\r
+               {\r
+                       string retVal = Enum.Format(enumType, enumValue, "G");\r
+                       return retVal.Replace('_','-');\r
+               }\r
+               \r
+               public static object ObjectFromString(Type objType, MemberInfo propertyInfo, string objValue)\r
+               {\r
+                       if(objValue == null)\r
+                               return null;\r
+                       if(! (!objType.Equals(typeof(Boolean)) || objValue.Length > 0) )\r
+                       {\r
+                               return null;\r
+                       }\r
+                       if(enumType.IsEnum)\r
+                       {\r
+                               return EnumFromString(objType, objValue);\r
+                       }\r
+                       if(enumType.Equals(typeof(string)))\r
+                       {\r
+                               return objValue;\r
+                       }\r
+                       PropertyDescriptor pc = null;\r
+                       if(propertyInfo != null)\r
+                       {\r
+                               pc = (TypeDesctiptor.GetProperties(propertyInfo.ReflectedType))[propertyInfo.Name];\r
+                       }\r
+                       if(pc != null)\r
+                       {\r
+                               TypeConverter converter = pc.Converter;\r
+                               if(converter!=null && conveter.CanConverFrom(typeof(string)))\r
+                               {\r
+                                       return converter.ConvertFromInvariantString(objValue);\r
+                               }\r
+                       }\r
+                       MethodInfo mi = objType.GetMethod("Parse", parseMethodTypesWithSOP);\r
+                       object o = null;\r
+                       if(mi != null)\r
+                       {\r
+                               object[] parameters = new object[2];\r
+                               parameters[0] = objValue;\r
+                               parameters[1] = CultureInfo.InvariantCulture;\r
+                               try\r
+                               {\r
+                                       o = Util.InvokeMethod(propertyInfo, null, parameters);\r
+                               } catch(Exception e)\r
+                               {\r
+                               }\r
+                       }\r
+                       if(o == null)\r
+                       {\r
+                               mi = objType.GetMethod("Parse", parseMethodTypes);\r
+                               if(mi!=null)\r
+                               {\r
+                                       object[] parameters = new object[1];\r
+                                       parameters[0] = objValue;\r
+                                       try\r
+                                       {\r
+                                               o = Util.InvokeMethod(propertyInfo, null, parameters);\r
+                                       } catch(Exception e)\r
+                                       {\r
+                                       }\r
+                               }\r
+                       }\r
+                       if(o == null)\r
+                       {\r
+                               throw new HttpException(HttpRuntime.FormatResourceString("Type_not_creatable_from_string", objType.FullName, objValue, propertyInfo.Name);\r
+                       }\r
+                       return o;\r
+               }\r
+       }\r
+}\r

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 (file)
index 0000000..e696e75
--- /dev/null
+++ b/mcs/class/System.Web/System.Web.UI/Utils.cs
@@ -0,0 +1,34 @@
+/**\r
+ * Namespace: System.Web.UI\r
+ * Class:     Utils\r
+ * \r
+ * Author:  Gaurav Vaish\r
+ * Maintainer: gvaish@iitk.ac.in\r
+ * Implementation: yes\r
+ * Contact: <gvaish@iitk.ac.in>\r
+ * Status:  ?%\r
+ * \r
+ * (C) Gaurav Vaish (2001)\r
+ */\r
+\r
+using System;\r
+using System.Reflection;\r
+\r
+namespace System.Web.UI\r
+{\r
+       private class Utils\r
+       {\r
+               internal static object InvokeMethod(MethodInfo info, object obj, object[] parameters)\r
+               {\r
+                       object retVal = null;\r
+                       try\r
+                       {\r
+                               retVal = info.Invoke(obj, parameters);\r
+                       } catch(TargetInvocationException tie)\r
+                       {\r
+                               throw tie.InnerException;\r
+                       }\r
+                       return retVal;\r
+               }\r
+       }\r
+}\r