private void FireRemovingChild(TreeNodeEventArgs e) { if (RemovingChild != null) RemovingChild(this, e); }
private void FireChildRemoved(TreeNodeEventArgs e) { if (RemovedChild != null) RemovedChild(this, e); FireChildrenChanged(); }
private void FireChildAdded(TreeNodeEventArgs e) { if (AddedChild != null) AddedChild(this, e); FireChildrenChanged(); }
private void FireAddingChild(TreeNodeEventArgs e) { if (AddingChild != null) AddingChild(this, e); }
public void RemoveChild(ITreeNode node)
{
// Ignore if the node has already been added.
if (!Contains(node)) return;
// Fire pre-event.
TreeNodeEventArgs args = new TreeNodeEventArgs(node, NullIndex);
FireRemovingChild(args);
// Remove the child.
ChildList.Remove(node);
// Unwire events.
node.SelectionChanged -= OnChildSelectionChanged;
// De-register this as the nodes parent.
if (node.Parent == this) SetParent(node, null);
// Fire post-event.
FireChildRemoved(args);
}
public void InsertChild(int index, ITreeNode node)
{
// Setup initial conditions.
if (node == null) return;
if (Contains(node)) return; // Ignore if the node has already been added.
if (index < 0) index = ChildCount;
// Fire pre-event.
TreeNodeEventArgs args = new TreeNodeEventArgs(node, index);
FireAddingChild(args);
// Store the node.
ChildList.Insert(index, node);
// Wire up events.
node.SelectionChanged += OnChildSelectionChanged;
// Ensure the parent node is set to this.
if (node.Parent != this) SetParent(node, this);
// Fire post-event.
FireChildAdded(args);
}
