/// <summary>
/// Gets called when an item is draged over the treeview.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">More information about the event.</param>
private void trvTree_DragOver(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(TreeNodeAdv[])) && trvTree.DropPosition.Node != null)
{
TreeNodeAdv[] nodes = e.Data.GetData(typeof(TreeNodeAdv[])) as TreeNodeAdv[];
TreeNodeAdv parent = trvTree.DropPosition.Node;
if (nodes != null && nodes.Length == 1 && parent != null && Editable)
{
ObjectField draggedField = nodes[0].Tag as ObjectField;
ObjectField destField = parent.Tag as ObjectField;
if (draggedField != null && destField != null && trvTree.DropPosition.Position != NodePosition.Inside)
{
bool ownNode = trvTree.FindNodeByTag(draggedField) != null;
if (ownNode && draggedField.Parent == destField.Parent)
{
e.Effect = DragDropEffects.Move;
return;
}
if (!ownNode)
{
ObjectFieldCollection parentDraggedCollection = draggedField.Parent as ObjectFieldCollection;
ObjectFieldCollection parentDestCollection = destField.Parent as ObjectFieldCollection;
if (parentDraggedCollection != null && parentDestCollection != null && parentDraggedCollection.ItemType == parentDestCollection.ItemType)
{
e.Effect = DragDropEffects.Copy;
return;
}
}
}
e.Effect = DragDropEffects.None;
}
}
}
private void expectedObjectTree_Expanded(object sender, ObjectFieldEventArgs e)
{
ObjectField otherField = currentObjectTree.GetEquivalentField(e.ObjectField);
if (toolStripButtonSynchronizeTrees.Checked)
{
// Synchronize with the other tree view
currentObjectTree.Expand(otherField);
}
bool openOther = true;
if (otherField != null)
{
ObjectFieldCollection otherCollection = otherField as ObjectFieldCollection;
if (otherCollection != null && otherCollection.Count > 1)
{
openOther = false;
}
}
ObjectFieldCollection collection = e.ObjectField as ObjectFieldCollection;
if (collection != null && collection.Count == 1 && (openOther || !toolStripButtonSynchronizeTrees.Checked))
{
expectedObjectTree.Expand(collection.Childs.First());
}
}
// ========================================================================
// Properties
#region === Properties
#endregion
// ========================================================================
// Event-Handling
#region === Event-Handling
private void objectTree_Expanded(object sender, ObjectTree.ObjectFieldEventArgs e)
{
ObjectFieldCollection collection = e.ObjectField as ObjectFieldCollection;
if (collection != null && collection.Count == 1)
{
objectTree.Expand(collection.Childs.First());
}
}
/// <summary>
/// Gets called after a new item was added to a collection.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="args">Informations about the event.</param>
private void field_ItemAdded(object sender, ObjectFieldEventArgs args)
{
ObjectFieldCollection collection = args.ObjectField.Parent as ObjectFieldCollection;
if (collection != null)
{
Dirty = true;
TreePath parentPath = GetPath(collection);
ObjectFieldList listField = collection as ObjectFieldList;
int index = collection.Count;
if (listField != null)
{
index = listField.Items.IndexOf(args.ObjectField);
}
OnNodesInserted(new TreeModelEventArgs(parentPath, new[] { index }, new object[] { args.ObjectField }));
treeView.FindNode(parentPath).Expand();
OnItemAdded(args);
}
}