// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002 Ximian, Inc. (http://www.ximian.com)
+// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-using System;
+using System.Collections;
+using System.ComponentModel;
using System.Reflection;
+using System.Security.Permissions;
namespace System.Web.UI {
- public sealed class DataBinder
- {
+ // CAS - no InheritanceDemand here as the class is sealed
+ [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
+ public sealed class DataBinder {
public DataBinder ()
{
}
+ internal static string FormatResult (object result, string format)
+ {
+ if (result == null)
+ return String.Empty;
+
+ if (format == null)
+ return result.ToString ();
+
+ return String.Format (format, result);
+ }
+
public static object Eval (object container, string expression)
{
- return GetPropertyValue (container, expression);
+ if ((expression == null) || (expression.Length == 0))
+ throw new ArgumentNullException ("expression");
+
+ object current = container;
+
+ while (current != null) {
+ int dot = expression.IndexOf ('.');
+ int size = (dot == -1) ? expression.Length : dot;
+ string prop = expression.Substring (0, size);
+ if (prop.IndexOf ('[') != -1)
+ current = GetIndexedPropertyValue (current, prop);
+ else
+ current = GetPropertyValue (current, prop);
+
+ if (dot == -1)
+ break;
+
+ expression = expression.Substring (prop.Length + 1);
+ }
+
+ return current;
}
public static string Eval (object container, string expression, string format)
{
- return GetPropertyValue (container, expression, format);
+ object result = Eval (container, expression);
+ return FormatResult (result, format);
}
- [MonoTODO]
public static object GetIndexedPropertyValue (object container, string expr)
{
- throw new NotImplementedException ();
+ if (container == null)
+ throw new ArgumentNullException ("container");
+ if ((expr == null) || (expr.Length == 0))
+ throw new ArgumentNullException ("expr");
+
+ int openIdx = expr.IndexOf ('[');
+ int closeIdx = expr.IndexOf (']'); // see the test case. MS ignores all after the first ]
+ if (openIdx < 0 || closeIdx < 0 || closeIdx - openIdx <= 1)
+ throw new ArgumentException (expr + " is not a valid indexed expression.");
+
+ string val = expr.Substring (openIdx + 1, closeIdx - openIdx - 1);
+ val = val.Trim ();
+ if (val.Length == 0)
+ throw new ArgumentException (expr + " is not a valid indexed expression.");
+
+ bool is_string = false;
+ // a quoted val means we have a string
+ if ((val[0] == '\'' && val[val.Length - 1] == '\'') ||
+ (val[0] == '\"' && val[val.Length - 1] == '\"')) {
+ is_string = true;
+ val = val.Substring(1, val.Length - 2);
+ } else {
+ // if all chars are digits, then we have a int
+ for(int i = 0; i < val.Length; i++)
+ if (!Char.IsDigit(val[i])) {
+ is_string = true;
+ break;
+ }
+ }
+
+ int intVal = 0;
+ if (!is_string) {
+ try {
+ intVal = Int32.Parse (val);
+ } catch {
+ throw new ArgumentException (expr + " is not a valid indexed expression.");
+ }
+ }
+
+ string property = null;
+ if (openIdx > 0) {
+ property = expr.Substring (0, openIdx);
+ if (property != null && property != String.Empty)
+ container = GetPropertyValue (container, property);
+ }
+
+ if (container == null)
+ return null;
+
+ if (container is System.Collections.IList) {
+ IList l = (IList) container;
+ return l [intVal];
+ }
+
+ Type t = container.GetType ();
+ // MS does not seem to look for any other than "Item"!!!
+ object [] atts = t.GetCustomAttributes (typeof (DefaultMemberAttribute), false);
+ if (atts.Length != 1)
+ throw new ArgumentException (expr + " indexer not found.");
+
+ property = ((DefaultMemberAttribute) atts [0]).MemberName;
+
+ Type [] argTypes = new Type [] { (is_string) ? typeof (string) : typeof (int) };
+ PropertyInfo prop = t.GetProperty (property, argTypes);
+ if (prop == null)
+ throw new ArgumentException (expr + " indexer not found.");
+
+ object [] args = new object [1];
+ if (is_string)
+ args [0] = val;
+ else
+ args [0] = intVal;
+
+ return prop.GetValue (container, args);
}
- [MonoTODO]
public static string GetIndexedPropertyValue (object container, string expr, string format)
{
- throw new NotImplementedException ();
+ object result = GetIndexedPropertyValue (container, expr);
+ return FormatResult (result, format);
}
public static object GetPropertyValue (object container, string propName)
{
- if (container == null || propName == null)
- throw new ArgumentException ();
+ if (container == null)
+ throw new ArgumentNullException ("container");
+ if (propName == null)
+ throw new ArgumentNullException ("propName");
- Type type = container.GetType ();
- PropertyInfo prop = type.GetProperty (propName);
- if (prop == null)
+ PropertyDescriptor prop = TypeDescriptor.GetProperties (container).Find (propName, true);
+ if (prop == null) {
throw new HttpException ("Property " + propName + " not found in " +
- type.ToString ());
- MethodInfo getm = prop.GetGetMethod ();
- if (getm == null)
- throw new HttpException ("Cannot find get accessor for " + propName +
- " in " + type.ToString ());
-
- return getm.Invoke (container, null);
+ container.GetType ());
+ }
+
+ return prop.GetValue (container);
}
public static string GetPropertyValue (object container, string propName, string format)
{
- object result;
-
- result = GetPropertyValue (container, propName);
- if (result == null)
- return String.Empty;
-
- if (format == null)
- return result.ToString ();
+ object result = GetPropertyValue (container, propName);
+ return FormatResult (result, format);
+ }
- return String.Format (format, result);
- }
+ #if NET_2_0
+ public static object GetDataItem (object container, out bool foundDataItem)
+ {
+ foundDataItem = false;
+ if (container == null)
+ return null;
+
+ if (container is IDataItemContainer) {
+ foundDataItem = true;
+ return ((IDataItemContainer)container).DataItem;
+ }
+
+ PropertyInfo pi = container.GetType ().GetProperty ("DataItem", BindingFlags.Public | BindingFlags.Instance);
+ if (pi == null)
+ return null;
+
+ foundDataItem = true;
+ return pi.GetValue (container, null);
+ }
+
+
+ public static object GetDataItem (object container)
+ {
+ bool flag;
+ return GetDataItem (container, out flag);
+ }
+ #endif
}
}
projects / mono.git / blobdiff