/////////////////////////////////////////////////////////////////////////////////////////////////////
// NON-PUBLIC PROCEDURES
/////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Occurs before an item is selected.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">The <c>RoutedEventArgs</c> that contains data related to this event.</param>
private void OnTreeListBoxItemSelecting(object sender, TreeListBoxItemEventArgs e)
{
if (true.Equals(this.CanBlockNames))
{
var model = e.Item as TreeNodeModel;
if ((model != null) && (!string.IsNullOrEmpty(model.Name)))
{
e.Cancel = ("ABCDE".IndexOf(model.Name[0].ToString(), StringComparison.OrdinalIgnoreCase) != -1);
}
}
}
/// <summary>
/// Occurs before the default action is executed for an item.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">The <c>TreeListBoxItemEventArgs</c> that contains the event data.</param>
private void OnTreeListBoxItemDefaultActionExecuting(object sender, TreeListBoxItemEventArgs e)
{
var model = e.Item as CheckableTreeNodeModel;
if ((model != null) && (model.IsCheckable))
{
e.Cancel = true;
// Toggle the checked state
model.IsChecked = !model.IsChecked;
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
// NON-PUBLIC PROCEDURES
/////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Occurs before the default action is executed for an item.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">The <c>TreeListBoxItemEventArgs</c> that contains the event data.</param>
private void OnTreeListBoxItemDefaultActionExecuting(object sender, TreeListBoxItemEventArgs e)
{
var model = e.Item as CheckableTreeNodeModel;
if ((model != null) && (model.IsCheckable) && (model.Children.Count == 0))
{
e.Cancel = true;
// Toggle the checked state
if (model.IsChecked == true)
{
model.IsChecked = false;
}
else
{
model.IsChecked = true;
}
}
}