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//
// System.ComponentModel.Design.Serialization.CollectionCodeDomSerializer
//
// Authors:
// Ivan N. Zlatev (contact i-nZ.net)
//
// (C) 2007 Ivan N. Zlatev
//
// 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.Reflection;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.CodeDom;
namespace System.ComponentModel.Design.Serialization
{
public class CollectionCodeDomSerializer : CodeDomSerializer
{
public CollectionCodeDomSerializer ()
{
}
// FIXME: What is this supposed to do?
protected bool MethodSupportsSerialization (MethodInfo method)
{
return true;
}
public override object Serialize (IDesignerSerializationManager manager, object value)
{
if (value == null)
throw new ArgumentNullException ("value");
if (manager == null)
throw new ArgumentNullException ("manager");
ICollection originalCollection = value as ICollection;
if (originalCollection == null)
throw new ArgumentException ("originalCollection is not an ICollection");
CodeExpression targetExpression = null;
ExpressionContext exprContext = manager.Context[typeof (ExpressionContext)] as ExpressionContext;
RootContext root = manager.Context[typeof (RootContext)] as RootContext;
if (exprContext != null && exprContext.PresetValue == value)
targetExpression = exprContext.Expression;
else if (root != null)
targetExpression = root.Expression;
ArrayList valuesToSerialize = new ArrayList ();
foreach (object o in originalCollection)
valuesToSerialize.Add (o);
return this.SerializeCollection (manager, targetExpression, value.GetType (), originalCollection, valuesToSerialize);
}
protected virtual object SerializeCollection (IDesignerSerializationManager manager, CodeExpression targetExpression,
Type targetType, ICollection originalCollection, ICollection valuesToSerialize)
{
if (valuesToSerialize == null)
throw new ArgumentNullException ("valuesToSerialize");
if (originalCollection == null)
throw new ArgumentNullException ("originalCollection");
if (targetType == null)
throw new ArgumentNullException ("targetType");
if (manager == null)
throw new ArgumentNullException ("manager");
if (valuesToSerialize.Count == 0)
return null;
MethodInfo method = null;
try {
object sampleParam = null;
IEnumerator e = valuesToSerialize.GetEnumerator ();
e.MoveNext ();
sampleParam = e.Current;
// try to find a method matching the type of the sample parameter.
// Assuming objects in the collection are from the same base type
method = GetExactMethod (targetType, "Add", new object [] { sampleParam });
} catch {
base.ReportError (manager, "A compatible Add/AddRange method is missing in the collection type '"
+ targetType.Name + "'");
}
if (method == null)
return null;
CodeStatementCollection statements = new CodeStatementCollection ();
foreach (object value in valuesToSerialize) {
CodeMethodInvokeExpression methodInvoke = new CodeMethodInvokeExpression ();
methodInvoke.Method = new CodeMethodReferenceExpression (targetExpression, "Add");
CodeExpression expression = base.SerializeToExpression (manager, value);
if (expression != null) {
methodInvoke.Parameters.AddRange (new CodeExpression[] { expression });
statements.Add (methodInvoke);
}
}
return statements;
}
// Searches for a method on type that matches argument types
//
private MethodInfo GetExactMethod (Type type, string methodName, ICollection argsCollection)
{
object[] arguments = null;
Type[] types = Type.EmptyTypes;
if (argsCollection != null) {
arguments = new object[argsCollection.Count];
types = new Type[argsCollection.Count];
argsCollection.CopyTo (arguments, 0);
for (int i=0; i < arguments.Length; i++) {
if (arguments[i] == null)
types[i] = null;
else
types[i] = arguments[i].GetType ();
}
}
return type.GetMethod (methodName, types);
}
}
}
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