void Triggers_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (e.OldItems != null)
{
foreach (IBindingTrigger trigger in e.OldItems)
{
if (trigger.Device.Length > 0)
{
ProfileExplorerTreeItem folder = GetFolder(trigger.Device);
folder.Children.Remove(folder.GetChildObject(trigger));
if (folder.Children.Count == 0)
{
Children.Remove(folder);
}
}
else
{
Children.Remove(GetChildObject(trigger));
}
}
}
if (e.NewItems != null)
{
foreach (IBindingTrigger trigger in e.NewItems)
{
AddTrigger(trigger, _includeTypes);
}
}
}
void Actions_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (e.OldItems != null)
{
foreach (IBindingAction action in e.OldItems)
{
string deviceName = GetDeviceNameForUserInterface(action);
if (deviceName.Length > 0)
{
ProfileExplorerTreeItem folder = GetFolder(deviceName);
folder.Children.Remove(folder.GetChildObject(action));
if (folder.Children.Count == 0)
{
Children.Remove(folder);
}
}
else
{
Children.Remove(GetChildObject(action));
}
}
}
if (e.NewItems != null)
{
foreach (IBindingAction action in e.NewItems)
{
AddAction(action, _includeTypes);
}
}
}
/// <summary>
/// common code for handling collection changes to tree item collections that are represented as folders with items,
/// where the folder name is dependent on the item (such as devices and their commands/values)
/// </summary>
/// <typeparam name="THeliosObject"></typeparam>
/// <param name="removedChildren"></param>
/// <param name="addedChildren"></param>
/// <param name="folderChooser">function that returns null if the item should not be in the tree, a folder name if the item goes in a folder, and an empty string if the item should go directly under the current node</param>
/// <param name="addItemHandler">function to call for each new item, has to handle the folder creation</param>
private void StructuredContentsChanged <THeliosObject>(IEnumerable removedChildren, IEnumerable addedChildren,
Func <THeliosObject, string> folderChooser, Action <THeliosObject, ProfileExplorerTreeItemType> addItemHandler)
{
if (removedChildren != null)
{
foreach (THeliosObject removedChild in removedChildren)
{
string folderName = folderChooser(removedChild);
if (folderName == null)
{
// should not even be here
continue;
}
ProfileExplorerTreeItem childItem;
if (folderName.Length == 0)
{
childItem = GetChildObject(removedChild);
if (childItem == null)
{
// not found
continue;
}
Children.Remove(childItem);
}
else
{
ProfileExplorerTreeItem folder = GetFolder(folderName);
if (folder == null)
{
// folder not found
continue;
}
childItem = folder.GetChildObject(removedChild);
if (childItem == null)
{
// child not in folder
continue;
}
folder.Children.Remove(childItem);
if (folder.Children.Count == 0)
{
// remove empty
Children.Remove(folder);
}
}
// now handle child removed
childItem.Disconnect();
}
}
if (addedChildren == null)
{
return;
}
foreach (THeliosObject addedChild in addedChildren)
{
// handler will do the folder creation, if any
addItemHandler(addedChild, _includeTypes);
}
}
