private void HandleListChanged(object value, ListChangedEventArgs args, IDictionaryAdapter dictionaryAdapter, PropertyDescriptor property)
{
var change = args.ListChangedType;
var changed
= change == ListChangedType.ItemAdded ||
change == ListChangedType.ItemDeleted ||
change == ListChangedType.ItemMoved ||
change == ListChangedType.Reset;
if (changed && dictionaryAdapter.ShouldClearProperty(property, value))
{
value = null;
dictionaryAdapter.SetProperty(property.PropertyName, ref value);
}
}
bool IDictionaryPropertySetter.SetPropertyValue(IDictionaryAdapter dictionaryAdapter,
string key, ref object value, PropertyDescriptor property)
{
XmlAccessor accessor;
if (TryGetAccessor(key, property, false, out accessor))
{
if (value != null && dictionaryAdapter.ShouldClearProperty(property, value))
{
value = null;
}
var oldValue = dictionaryAdapter.ReadProperty(key);
accessor.SetPropertyValue(node, dictionaryAdapter, references, oldValue, ref value);
}
return(true);
}
private void WriteProperty(XPathResult result, object value, IDictionaryAdapter dictionaryAdapter)
{
var propertyType = result.Type;
var shouldRemove = (value == null);
if (result.Property != null)
{
shouldRemove |= dictionaryAdapter.ShouldClearProperty(result.Property, value);
dictionaryAdapter.This.ExtendedProperties.Remove(result.Property.PropertyName);
}
if (shouldRemove)
{
result.Remove(true);
return;
}
if (WriteCustom(result, value, dictionaryAdapter))
{
return;
}
if (propertyType == typeof(string))
{
WriteSimple(result, value, dictionaryAdapter);
}
else if (typeof(IXPathNavigable).IsAssignableFrom(propertyType))
{
WriteFragment(result, (IXPathNavigable)value);
}
else if (propertyType.IsArray || typeof(IEnumerable).IsAssignableFrom(propertyType))
{
WriteCollection(result, value, dictionaryAdapter);
}
else if (propertyType.IsInterface)
{
WriteComponent(result, value, dictionaryAdapter);
}
else
{
WriteSimple(result, value, dictionaryAdapter);
}
}
private void WriteProperty(XPathResult result, ref object value, IDictionaryAdapter dictionaryAdapter)
{
var propertyType = result.Type;
var shouldRemove = (value == null);
if (result.Property != null)
{
shouldRemove = shouldRemove || dictionaryAdapter.ShouldClearProperty(result.Property, value);
}
if (shouldRemove)
{
result.Remove(true);
value = null;
return;
}
if (WriteCustom(result, value, dictionaryAdapter))
{
return;
}
if (propertyType == typeof(string))
{
WriteSimple(result, value, dictionaryAdapter);
}
else if (typeof(IXPathNavigable).IsAssignableFrom(propertyType))
{
WriteFragment(result, (IXPathNavigable)value);
}
else if (propertyType.IsArray || typeof(IEnumerable).IsAssignableFrom(propertyType))
{
WriteCollection(result, ref value, dictionaryAdapter);
}
else if (propertyType.IsInterface)
{
WriteComponent(result, ref value, dictionaryAdapter);
}
else
{
WriteSimple(result, value, dictionaryAdapter);
}
}
private object ReadList(XPathResult result, IDictionaryAdapter dictionaryAdapter)
{
Type listType = null, initializerType = null;
var arguments = result.Type.GetGenericArguments();
var genericDef = result.Type.GetGenericTypeDefinition();
var itemType = arguments[0];
Func<Type, XmlMetadata> getXmlMeta = type => dictionaryAdapter.GetXmlMeta(type);
var itemNodes = result.GetNodes(itemType, getXmlMeta);
if (itemNodes == null) return null;
if (genericDef == typeof(IEnumerable<>) || genericDef == typeof(ICollection<>) || genericDef == typeof(List<>))
{
listType = typeof(EditableList<>).MakeGenericType(arguments);
}
else if (
#if !DOTNET35
//NOTE: what about SortedSet?
genericDef == typeof(ISet<>) ||
#endif
genericDef == typeof(HashSet<>))
{
listType = typeof(List<>).MakeGenericType(arguments);
}
else
{
listType = typeof(EditableBindingList<>).MakeGenericType(arguments);
initializerType = typeof(BindingListInitializer<>).MakeGenericType(arguments);
}
var list = (IList)Activator.CreateInstance(listType);
foreach (var item in itemNodes)
{
list.Add(ReadProperty(item, false, dictionaryAdapter));
}
if (
#if !DOTNET35
//NOTE: what about SortedSet?
genericDef == typeof(ISet<>) ||
#endif
genericDef == typeof(HashSet<>))
{
return Activator.CreateInstance(typeof(HashSet<>).MakeGenericType(arguments), list);
}
if (initializerType != null)
{
Func<object> addNew = () =>
{
var node = result.CreateNode(itemType, null, getXmlMeta);
return ReadProperty(node, false, dictionaryAdapter);
};
Func<int, object, object> addAt = (index, item) =>
{
var node = result.CreateNode(itemType, item, getXmlMeta);
WriteProperty(node, ref item, dictionaryAdapter);
return item;
};
Func<int, object, object> setAt = (index, item) =>
{
var node = result.GetNodeAt(itemType, index);
WriteProperty(node, ref item, dictionaryAdapter);
return item;
};
Action<int> removeAt = index =>
{
object value = list;
if (dictionaryAdapter.ShouldClearProperty(result.Property, value))
{
result.Remove(true);
return;
}
result.RemoveAt(index);
};
Action reset = () =>
{
object value = list;
if (dictionaryAdapter.ShouldClearProperty(result.Property, value))
{
result.Remove(true);
return;
}
WriteCollection(result, ref value, dictionaryAdapter);
};
var initializer = (IValueInitializer)Activator.CreateInstance(
initializerType, addAt, addNew, setAt, removeAt, reset);
initializer.Initialize(dictionaryAdapter, list);
}
return list;
}
private object ReadList(XPathResult result, IDictionaryAdapter dictionaryAdapter)
{
Type listType = null, initializerType = null;
var arguments = result.Type.GetGenericArguments();
var genericDef = result.Type.GetGenericTypeDefinition();
var itemType = arguments[0];
Func <Type, XmlMetadata> getXmlMeta = type => dictionaryAdapter.GetXmlMeta(type);
var itemNodes = result.GetNodes(itemType, getXmlMeta);
if (itemNodes == null)
{
return(null);
}
if (genericDef == typeof(IEnumerable <>) || genericDef == typeof(ICollection <>) || genericDef == typeof(List <>))
{
listType = typeof(EditableList <>).MakeGenericType(arguments);
}
else if (
#if !DOTNET35
//NOTE: what about SortedSet?
genericDef == typeof(ISet <>) ||
#endif
genericDef == typeof(HashSet <>))
{
listType = typeof(List <>).MakeGenericType(arguments);
}
else
{
listType = typeof(EditableBindingList <>).MakeGenericType(arguments);
initializerType = typeof(BindingListInitializer <>).MakeGenericType(arguments);
}
var list = (IList)Activator.CreateInstance(listType);
foreach (var item in itemNodes)
{
list.Add(ReadProperty(item, false, dictionaryAdapter));
}
if (
#if !DOTNET35
//NOTE: what about SortedSet?
genericDef == typeof(ISet <>) ||
#endif
genericDef == typeof(HashSet <>))
{
return(Activator.CreateInstance(typeof(HashSet <>).MakeGenericType(arguments), list));
}
if (initializerType != null)
{
Func <object> addNew = () =>
{
var node = result.CreateNode(itemType, null, getXmlMeta);
return(ReadProperty(node, false, dictionaryAdapter));
};
Func <int, object, object> addAt = (index, item) =>
{
var node = result.CreateNode(itemType, item, getXmlMeta);
WriteProperty(node, ref item, dictionaryAdapter);
return(item);
};
Func <int, object, object> setAt = (index, item) =>
{
var node = result.GetNodeAt(itemType, index);
WriteProperty(node, ref item, dictionaryAdapter);
return(item);
};
Action <int> removeAt = index =>
{
object value = list;
if (dictionaryAdapter.ShouldClearProperty(result.Property, value))
{
result.Remove(true);
return;
}
result.RemoveAt(index);
};
Action reset = () =>
{
object value = list;
if (dictionaryAdapter.ShouldClearProperty(result.Property, value))
{
result.Remove(true);
return;
}
WriteCollection(result, ref value, dictionaryAdapter);
};
var initializer = (IValueInitializer)Activator.CreateInstance(
initializerType, addAt, addNew, setAt, removeAt, reset);
initializer.Initialize(dictionaryAdapter, list);
}
return(list);
}
