// TODO: into behavior?
protected override void OnPreviewMouseRightButtonDown(MouseButtonEventArgs e)
{
NodeForContextMenu = null;
NodeItem nodeItem = null;
if (Keyboard.Modifiers == ModifierKeys.Control)
{
// in case the full treeview is filled with nodes there is no option to
// open context menu without selecting any node (because nodes stretch horizontally)
// -> use a modifier to signal that context menu should be opened with the full tree as context
nodeItem = null;
}
else
{
nodeItem = ((DependencyObject)e.OriginalSource).FindParentOfType <NodeItem>();
}
if (nodeItem != null)
{
NodeForContextMenu = (INode)nodeItem.DataContext;
nodeItem.Focus();
}
else
{
// if we click directly into the tree control we pick Root
NodeForContextMenu = StateContainer.DataContext;
}
RefreshContextMenuCommandsCanExecute();
e.Handled = true;
}
public void Attach(NodeItem nodeItem)
{
myAttachedView = nodeItem;
myAttachedView.IsFilteredOut = IsFilteredOut;
var expr = myAttachedView.GetBindingExpression(TreeViewItem.IsExpandedProperty);
if (expr != null)
{
// property bound to INode impl --> this is the master
IsExpanded = myAttachedView.IsExpanded;
}
else
{
// no binding --> we are the master
myAttachedView.IsExpanded = IsExpanded;
}
}
