TextBox AddTextBoxes(ItemsControl control, IEnumerable <EditableTreeViewLevelRule> rules)
{
EditableTreeViewLevelRule thisLayerRules = rules.First();
TextBox tb = new TextBox()
{
MinWidth = 50,
Text = thisLayerRules.HelpText
};
tb.GotKeyboardFocus += (o, e) =>
{
if (tb.Text == thisLayerRules.HelpText)
{
tb.Text = "";
}
};
tb.LostKeyboardFocus += (o, e) =>
{
if (String.IsNullOrWhiteSpace(tb.Text))
{
tb.Text = thisLayerRules.HelpText;
}
};
tb.KeyUp += (o, e) =>
{
tb.Background = new SolidColorBrush(Colors.White);
if (e.Key != Key.Enter)
{
return;
}
e.Handled = true;
// enter button pressed
string newItemText = tb.Text;
if (thisLayerRules.Unique)
{
if (control.ContainsChildHeader(newItemText))
{
tb.Background = new SolidColorBrush(Colors.Red);
return;
}
}
TreeViewItem tvi = new TreeViewItem()
{
Header = newItemText
};
TextBox innerTb = null;
if (rules.Count() > 1)
{
tvi.IsExpanded = true;
innerTb = AddTextBoxes(tvi, rules.Skip(1));
}
tb.Text = "";
control.Items.Insert(control.Items.Count - 1, tvi);
// TODO: fix this. doesn't work
// the keyboard focus should switch to the inner textbox
// when a new section is added
if (innerTb != null)
{
Keyboard.Focus(innerTb);
}
};
if (rules.Count() > 1)
{
foreach (object item in control.Items)
{
TreeViewItem tvi = item as TreeViewItem;
if (tvi == null)
{
continue;
}
AddTextBoxes(tvi, rules.Skip(1));
}
}
control.Items.Add(tb);
return(tb);
}
