private void SfTreeView_ItemDropping(object sender, TreeViewItemDroppingEventArgs e)
{
e.Handled = true;
if (e.DraggingNodes != null && e.DraggingNodes[0].Content is ChunkViewModel source)
{
if (e.TargetNode.Content is ChunkViewModel target)
{
if (source.Data is RedBaseClass rbc)
{
if (target.Parent.Data is DataBuffer or SerializationDeferredDataBuffer)
{
target.Parent.AddChunkToDataBuffer((RedBaseClass)rbc.DeepCopy(), target.Parent.Properties.IndexOf(target) + 1);
}
if (target.Parent.Data is IRedArray arr)
{
var arrayType = target.Parent.Data.GetType().GetGenericTypeDefinition();
if (arrayType == typeof(CArray <>))
{
target.Parent.AddClassToArray((RedBaseClass)rbc.DeepCopy(), target.Parent.Properties.IndexOf(target) + 1);
}
if (arrayType == typeof(CStatic <>) && arr.Count < arr.MaxSize)
{
target.Parent.AddClassToArray((RedBaseClass)rbc.DeepCopy(), target.Parent.Properties.IndexOf(target) + 1);
}
}
}
}
}
}
private void SfTreeView_ItemDropping(object sender, TreeViewItemDroppingEventArgs e)
{
e.Handled = true;
if (e.DraggingNodes != null && e.DraggingNodes[0].Content is ChunkViewModel source)
{
if (e.TargetNode.Content is ChunkViewModel target)
{
if (source.Data is RedBaseClass rbc && target.Parent.Data is DataBuffer or SerializationDeferredDataBuffer)
{
target.Parent.AddChunkToDataBuffer((RedBaseClass)rbc.DeepCopy(), target.Parent.Properties.IndexOf(target) + 1);
}
}
}
}
private void TreeView_ItemDropping(object sender, TreeViewItemDroppingEventArgs e)
{
var dragSource = e.DragSource as SfTreeView;
var dropSource = sender as SfTreeView;
IList sourceCollection = null;
if (dragSource == null || (dragSource != dropSource))
{
var item = e.Data.GetData("Nodes") as ObservableCollection <TreeNode>;
var treeNode = item[0] as TreeNode;
var record = treeNode.Item as PersonInfo;
var dropPosition = e.DropPosition.ToString();
var newItem = new PersonInfo();
if (e.TargetNode != null)
{
var itemInfo = AssociatedObject.treeView.GetItemInfo(e.TargetNode.Content);
int rowIndex = (int)itemInfo.ItemIndex;
if (dropPosition != "None" && rowIndex != -1)
{
var treeViewNode = AssociatedObject.treeView.GetNodeAtRowIndex(rowIndex);
if (treeViewNode == null)
{
return;
}
var data = treeViewNode.Content;
var itemIndex = -1;
TreeViewNode parentNode = null;
if (dropPosition == "DropBelow" || dropPosition == "DropAbove")
{
parentNode = treeViewNode.ParentNode;
if (parentNode == null)
{
newItem = new PersonInfo()
{
FirstName = record.FirstName, LastName = record.LastName, ID = record.ID, DOB = record.DOB, Children = record.Children
}
}
;
else
{
var parentkey = parentNode.Content as PersonInfo;
newItem = new PersonInfo()
{
FirstName = record.FirstName, LastName = record.LastName, ID = record.ID, DOB = record.DOB, Children = record.Children
};
}
}
else if (dropPosition == "DropAsChild")
{
if (!treeViewNode.IsExpanded)
{
AssociatedObject.treeView.ExpandNode(treeViewNode);
}
parentNode = treeViewNode;
var parentkey = parentNode.Content as PersonInfo;
newItem = new PersonInfo()
{
FirstName = record.FirstName, LastName = record.LastName, ID = record.ID, Children = record.Children
};
}
if (dropPosition == "DropBelow" || dropPosition == "DropAbove")
{
if (treeViewNode.ParentNode != null)
{
IEnumerable collection = null;
if (AssociatedObject.treeView.HierarchyPropertyDescriptors != null && AssociatedObject.treeView.HierarchyPropertyDescriptors.Count > 0)
{
foreach (var propertyDescriptor in AssociatedObject.treeView.HierarchyPropertyDescriptors)
{
if (propertyDescriptor.TargetType == treeViewNode.ParentNode.Content.GetType())
{
var descriptors = TypeDescriptor.GetProperties(treeViewNode.ParentNode.Content.GetType());
var tempItem = descriptors.Find(AssociatedObject.treeView.ChildPropertyName, true);
if (tempItem != null)
{
collection = tempItem.GetValue(treeViewNode.ParentNode.Content) as IEnumerable;
}
break;
}
}
}
else
{
var descriptors = TypeDescriptor.GetProperties(treeViewNode.ParentNode.Content.GetType());
var tempItem = descriptors.Find(AssociatedObject.treeView.ChildPropertyName, true);
if (tempItem != null)
{
collection = tempItem.GetValue(treeViewNode.ParentNode.Content) as IEnumerable;
}
}
sourceCollection = GetSourceListCollection(collection);
}
else
{
sourceCollection = GetSourceListCollection(null);
}
itemIndex = sourceCollection.IndexOf(data);
if (dropPosition == "DropBelow")
{
itemIndex += 1;
}
}
else if (dropPosition == "DropAsChild")
{
var descriptors = TypeDescriptor.GetProperties(treeViewNode.Content.GetType());
if (parentNode != null)
{
IEnumerable collection = null;
var tempItem = descriptors.Find(AssociatedObject.treeView.ChildPropertyName, true);
if (tempItem != null)
{
collection = tempItem.GetValue(treeViewNode.Content) as IEnumerable;
}
if (collection != null)
{
sourceCollection = GetSourceListCollection(collection);
}
}
if (sourceCollection == null)
{
var type = data.GetType().GetProperty(AssociatedObject.treeView.ChildPropertyName).PropertyType;
var paramExp = System.Linq.Expressions.Expression.Parameter(type, type.Name);
var instance = System.Linq.Expressions.Expression.MemberInit(System.Linq.Expressions.Expression.New(type), new List <MemberBinding>());
var lambda = System.Linq.Expressions.Expression.Lambda(instance, paramExp);
var delg = lambda.Compile();
var list = delg.DynamicInvoke(new object[] { null }) as IList;
if (list != null)
{
var tempitem = descriptors.Find(AssociatedObject.treeView.ChildPropertyName, true);
tempitem.SetValue(treeViewNode.Content, list);
sourceCollection = list;
}
itemInfo.Node.PopulateChildNodes(sourceCollection);
}
itemIndex = sourceCollection.Count;
}
sourceCollection.Insert(itemIndex, newItem);
e.Handled = true;
(AssociatedObject.treeGrid.ItemsSource as ObservableCollection <PersonInfo>).Remove(record as PersonInfo);
}
}
else
{
sourceCollection = GetSourceListCollection(null);
sourceCollection.Insert(0, record);
(AssociatedObject.treeGrid.ItemsSource as ObservableCollection <PersonInfo>).Remove(record as PersonInfo);
}
}
}
