/// <summary>
/// Executed when create new tag button is clicked.
/// Adds an EvernoteTagItem to the collection and puts it in edit mode.
/// </summary>
void createBtn_Click(object sender, RoutedEventArgs e)
{
if (ItemsSource != null)
{
var used = SelectedTags.ToList();
AllTags.Clear();
AllTags.AddRange(_originalAllTags.Where(t => !used.Select(u => u.Id).Contains(t.Id)).ToList());
}
if (AllTags.Count == 0)
{
return;
}
var newItem = CreateTagItem(new Tag());
newItem.IsEditing = true;
AddTag(newItem);
this.SelectedItem = newItem;
this.IsEditing = true;
}