private void LoadLineCollection(ObservableCollection <string> items)
{
if (this.collectionChangedHooked == false)
{
items.CollectionChanged += Items_CollectionChanged;
this.collectionChangedHooked = true;
}
this.LineCollection.Clear();
// input list of items is emtpy. add a blank line.
if (items.Count == 0)
{
items.Add("");
}
else
{
foreach (var item in items)
{
var line = new ItemsControlTextItem(item);
this.LineCollection.Add(line);
}
}
}
private void Items_CollectionChanged(
object sender, NotifyCollectionChangedEventArgs e)
{
if (e.NewItems != null)
{
var ix = e.NewStartingIndex;
foreach (var item in e.NewItems)
{
var line = new ItemsControlTextItem(item as string);
this.LineCollection.Insert(ix, line);
ix += 1;
}
}
if (e.OldItems != null)
{
var ix = e.OldStartingIndex;
foreach (var item in e.OldItems)
{
this.LineCollection.RemoveAt(ix);
}
}
}