/// <summary>Hides and unloads the auto-completion pop-up window.</summary>
private void HidePopup()
{
if (completionPanel == null)
{
return;
}
completionPanel.ListBoxItemDoubleClick -= ListItem_DoubleClick;
if (completionPanel.IsOpen)
{
completionPanel.IsOpen = false;
}
completionPanel = null;
}
/// <summary>Instantiates and displays a new auto-completion window using the supplied
/// auto-completion tree.</summary>
///
private void ShowPopup(List <ExpressionNode> rootNodes)
{
if (completionPanel != null && completionPanel.IsOpen)
{
HidePopup();
}
completionPanel = new AutoCompletionPopup
{
DataContext = rootNodes,
PlacementTarget = editor,
Placement = System.Windows.Controls.Primitives.PlacementMode.Bottom
};
completionPanel.ListBoxItemDoubleClick += ListItem_DoubleClick;
}
