void VisualChildren_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (e.OldItems != null)
{
foreach (HeliosVisual visual in e.OldItems)
{
ProfileExplorerTreeItem child = GetChildObject(visual);
if (child != null)
{
child.Disconnect();
Children.Remove(child);
}
}
}
if (e.NewItems != null)
{
foreach (HeliosVisual child in e.NewItems)
{
if ((child is HeliosPanel && _includeTypes.HasFlag(ProfileExplorerTreeItemType.Panel)) ||
(child is HeliosVisual && _includeTypes.HasFlag(ProfileExplorerTreeItemType.Visual)))
{
Children.Add(new ProfileExplorerTreeItem(child, this, _includeTypes));
}
}
}
}
void Bindings_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (e.OldItems != null)
{
foreach (HeliosBinding binding in e.OldItems)
{
ProfileExplorerTreeItem child = GetChildObject(binding);
if (child != null)
{
child.Disconnect();
Children.Remove(child);
}
}
}
if (e.NewItems != null)
{
foreach (HeliosBinding child in e.NewItems)
{
if (child.Action == ContextItem || child.Trigger == ContextItem)
{
ProfileExplorerTreeItem childItem = new ProfileExplorerTreeItem(child, this, _includeTypes);
if (_includeTypes.HasFlag(ProfileExplorerTreeItemType.Binding))
{
IsExpanded = true;
Children.Add(childItem);
}
}
}
}
}
/// <summary>
/// common code for handling collection changes to tree item collections that are represented as a named folder
/// rather than just directly adding children under the current node
///
/// this type of folder is not removed when empty
/// </summary>
/// <typeparam name="THeliosObject"></typeparam>
/// <param name="folderName"></param>
/// <param name="removedChildren"></param>
/// <param name="addedChildren"></param>
/// <param name="factory"></param>
private void FolderContentsChanged <THeliosObject>(string folderName, IEnumerable removedChildren, IEnumerable addedChildren, Func <THeliosObject, ProfileExplorerTreeItem> factory)
{
bool newFolder = false;
ProfileExplorerTreeItem childrenFolder;
// lazy create folder
if (HasFolder(folderName))
{
childrenFolder = GetFolder(folderName);
}
else
{
childrenFolder = new ProfileExplorerTreeItem(folderName, "", this, _includeTypes);
newFolder = true;
}
if (removedChildren != null)
{
foreach (THeliosObject removedChild in removedChildren)
{
ProfileExplorerTreeItem childItem = childrenFolder.GetChildObject(removedChild);
if (childItem == null)
{
// not found
continue;
}
// remove from folder, but never remove the folder itself, as it is considered part of the UI
childItem.Disconnect();
childrenFolder.Children.Remove(childItem);
}
}
if (addedChildren != null)
{
foreach (THeliosObject addedChild in addedChildren)
{
ProfileExplorerTreeItem childItem = factory(addedChild);
childrenFolder.Children.Add(childItem);
}
}
if (newFolder && childrenFolder.HasChildren)
{
Children.Add(childrenFolder);
}
}
void Interfaces_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
bool newFolder = false;
ProfileExplorerTreeItem interfaces;
if (HasFolder("Interfaces"))
{
interfaces = GetFolder("Interfaces");
}
else
{
interfaces = new ProfileExplorerTreeItem("Interfaces", "", this, _includeTypes);
newFolder = true;
}
if (e.OldItems != null)
{
foreach (HeliosInterface heliosInterface in e.OldItems)
{
ProfileExplorerTreeItem child = interfaces.GetChildObject(heliosInterface);
if (child != null)
{
child.Disconnect();
interfaces.Children.Remove(child);
}
}
}
if (e.NewItems != null)
{
foreach (HeliosInterface heliosInterface in e.NewItems)
{
ProfileExplorerTreeItem childItem = new ProfileExplorerTreeItem(heliosInterface, this, _includeTypes);
interfaces.Children.Add(childItem);
}
}
if (newFolder && interfaces.HasChildren)
{
Children.Add(interfaces);
}
}
