private static ConfigurationElementCollection CloneCollection(ConfigurationElementCollection sourceCollection, ConfigurationElementCollection targetCollection)
{
targetCollection = (ConfigurationElementCollection)CloneElement(sourceCollection, targetCollection);
IMergeableConfigurationElementCollection mergeableSource = MergeableConfigurationCollectionFactory.GetCreateMergeableCollection(sourceCollection);
IMergeableConfigurationElementCollection mergeableTarget = MergeableConfigurationCollectionFactory.GetCreateMergeableCollection(targetCollection);
if (mergeableSource == null)
{
return(targetCollection);
}
List <ConfigurationElement> targetCollectionContents = new List <ConfigurationElement>();
foreach (ConfigurationElement sourceElement in sourceCollection)
{
ConfigurationElement targetElement;
targetElement = CreateCopyOfCollectionElement(mergeableSource, sourceElement);
targetElement = CloneElement(sourceElement, targetElement);
targetCollectionContents.Add(targetElement);
}
mergeableTarget.ResetCollection(targetCollectionContents);
targetCollection.EmitClear = sourceCollection.EmitClear;
return(targetCollection);
}
public ConfigurationElementCollection GetMergedElementCollection()
{
if (mergeableLocalElement == null)
{
return(localCollection);
}
if (localCollection.EmitClear)
{
return(localCollection);
}
List <ConfigurationElement> elementsFromParent = parentCollection.Cast <ConfigurationElement>().ToList();
foreach (ConfigurationElement elementFromLocal in localCollection.Cast <ConfigurationElement>())
{
var keyPredicate = CreateMatchKeyPredicate(elementFromLocal);
ConfigurationElement matchingElement = elementsFromParent.Where(keyPredicate).FirstOrDefault();
if (matchingElement != null)
{
ConfigurationElementMerge elementMerge = new ConfigurationElementMerge(matchingElement, elementFromLocal);
ConfigurationElement mergedElement = elementMerge.GetMergedElement();
int index = elementsFromParent.IndexOf(matchingElement);
elementsFromParent.RemoveAt(index);
elementsFromParent.Insert(index, mergedElement);
}
else
{
elementsFromParent.Add(elementFromLocal);
}
}
mergeableLocalElement.ResetCollection(elementsFromParent);
return(localCollection);
}
/// <summary>
/// Adds a new item of type <paramref name="elementType"/> to the collection.
/// </summary>
/// <param name="elementType">The <see cref="Type"/> of element to add. It should be of, or derive from, the type indicated in <see cref="CollectionElementType"/>.</param>
/// <returns>An <see cref="ElementViewModel"/> for the added type.</returns>
public virtual ElementViewModel AddNewCollectionElement(Type elementType)
{
EnsureHasChildElements();
var element = mergeableConfigurationCollection.CreateNewElement(elementType);
var childElementModel = ContainingSection.CreateCollectionElement(this, element);
if (childElementModel.NameProperty != null)
{
childElementModel.NameProperty.Value = CalculateNameFromType(elementType);
}
// add the new element to the configuration.
mergeableConfigurationCollection.ResetCollection(
thisElementCollection.OfType <ConfigurationElement>()
.Concat(new[] { element })
.ToArray());
foreach (var property in childElementModel.Properties)
{
DesigntimeDefaultAttribute defaultDesigntimeValue = property.Attributes.OfType <DesigntimeDefaultAttribute>().FirstOrDefault();
if (defaultDesigntimeValue != null)
{
property.Value = property.ConvertFromBindableValueInvariant(defaultDesigntimeValue.BindableDefaultValue);
}
}
childElementModel.Initialize(new InitializeContext());
InitializeElementProperties(childElementModel);
// add the new element to the view model.
AddChildToView(childElementModel);
Validate();
return(childElementModel);
}
