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//
// System.Web.Compilation.ResourceExpressionBuilder
//
// Authors:
// Chris Toshok (toshok@ximian.com)
//
// (C) 2006-2010 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.CodeDom;
using System.ComponentModel;
using System.Reflection;
using System.Web;
using System.Web.UI;
namespace System.Web.Compilation
{
[ExpressionEditor("System.Web.UI.Design.ResourceExpressionEditor, " + Consts.AssemblySystem_Design)]
[ExpressionPrefix("Resources")]
public class ResourceExpressionBuilder : ExpressionBuilder
{
public ResourceExpressionBuilder ()
{
}
public override object EvaluateExpression (object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
{
ResourceExpressionFields fields = parsedData as ResourceExpressionFields;
return HttpContext.GetGlobalResourceObject (fields.ClassKey, fields.ResourceKey);
}
public override CodeExpression GetCodeExpression (BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
{
ResourceExpressionFields fields = parsedData as ResourceExpressionFields;
CodeExpression[] expr;
// TODO: check what MS runtime does in this situation
if (entry == null)
return null;
if (!String.IsNullOrEmpty (fields.ClassKey)) {
if (! (entry.PropertyInfo is PropertyInfo))
return null; // TODO: check what MS runtime does here
expr = new CodeExpression [] {
new CodePrimitiveExpression (fields.ClassKey),
new CodePrimitiveExpression (fields.ResourceKey)
};
CodeMethodInvokeExpression getgro = new CodeMethodInvokeExpression (new CodeThisReferenceExpression (), "GetGlobalResourceObject", expr);
return new CodeCastExpression (entry.PropertyInfo.PropertyType, getgro);
} else
return CreateGetLocalResourceObject (entry, fields.ResourceKey);
}
public static ResourceExpressionFields ParseExpression (string expression)
{
int comma = expression.IndexOf (',');
if (comma == -1)
return new ResourceExpressionFields (expression.Trim ());
else
return new ResourceExpressionFields (expression.Substring (0, comma).Trim (),
expression.Substring (comma + 1).Trim ());
}
public override object ParseExpression (string expression, Type propertyType, ExpressionBuilderContext context)
{
//FIXME: not sure what the propertyType should be used for
return ParseExpression (expression);
}
public override bool SupportsEvaluate {
get { return true; }
}
internal static CodeExpression CreateGetLocalResourceObject (BoundPropertyEntry bpe, string resname)
{
if (bpe == null || String.IsNullOrEmpty (resname))
return null;
if (bpe.UseSetAttribute)
return CreateGetLocalResourceObject (bpe.Type, typeof (string), null, resname);
else
return CreateGetLocalResourceObject (bpe.PropertyInfo, resname);
}
internal static CodeExpression CreateGetLocalResourceObject (MemberInfo mi, string resname)
{
if (String.IsNullOrEmpty (resname))
return null;
Type member_type = null;
if (mi is PropertyInfo)
member_type = ((PropertyInfo)mi).PropertyType;
else if (mi is FieldInfo)
member_type = ((FieldInfo)mi).FieldType;
else
return null; // an "impossible" case
return CreateGetLocalResourceObject (member_type, mi.DeclaringType, mi.Name, resname);
}
static CodeExpression CreateGetLocalResourceObject (Type member_type, Type declaringType, string memberName, string resname)
{
TypeConverter converter;
if (!String.IsNullOrEmpty (memberName))
converter = TypeDescriptor.GetProperties (declaringType) [memberName].Converter;
else
converter = null;
if (member_type != typeof (System.Drawing.Color) &&
(converter == null || converter.CanConvertFrom (typeof (String)))) {
CodeMethodInvokeExpression getlro = new CodeMethodInvokeExpression (
new CodeThisReferenceExpression (),
"GetLocalResourceObject",
new CodeExpression [] { new CodePrimitiveExpression (resname) });
return TemplateControlCompiler.CreateConvertToCall (Type.GetTypeCode (member_type), getlro);
} else if (!String.IsNullOrEmpty (memberName)) {
CodeMethodInvokeExpression getlro = new CodeMethodInvokeExpression (
new CodeThisReferenceExpression (),
"GetLocalResourceObject",
new CodeExpression [] {
new CodePrimitiveExpression (resname),
new CodeTypeOfExpression (new CodeTypeReference (declaringType)),
new CodePrimitiveExpression (memberName)
}
);
return new CodeCastExpression (member_type, getlro);
} else
return null;
}
}
}
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