/// <summary>
/// add selected available items to Current Items list.
/// </summary>
void RightArrow_Click(object sender, RoutedEventArgs e)
{
if (this.DataContext is IMultiSelectControlCommands)
{
var externalCommands = (IMultiSelectControlCommands)this.DataContext;
if (AvailabeListBox.SelectedItems.Count > 0)
{
externalCommands.SelectItem(AvailabeListBox.SelectedItems[0]);
}
}
else
{
//A copy is used, because the collection is changed in the iteration
IList selectedItems =
new List <object>((IEnumerable <object>)AvailabeListBox.SelectedItems);
IList currentListItems = CurrentItems as IList;
if (null != currentListItems)
{
foreach (object obj in selectedItems)
{
currentListItems.Add(obj);
}
}
}
//updates the available collection
AvailableItemsCollectionView.Refresh();
}
private void SetupCurrentItems()
{
var currentCollectionView = CollectionViewSource.GetDefaultView(CurrentItems);
UpDownButtonsVisible = currentCollectionView.SortDescriptions.Count > 0 ? Visibility.Visible : Visibility.Collapsed;
if (AvailableItemsCollectionView != null)
{
AvailableItemsCollectionView.Refresh();
}
}
/// <summary>
/// setup Available Items list to filter by Current Items list.
/// </summary>
private void SetupAvailableItems()
{
AvailableItemsCollectionView = CollectionViewSource.GetDefaultView(AvailableItems);
if (AvailableItemsCollectionView.Filter == null)
{
AvailableItemsCollectionView.Filter = new Predicate <object>(FilterOutCurrentItems);
}
else
{
AvailableItemsCollectionView.Refresh();
}
}
/// <summary>
/// Remove all items from current list.
/// </summary>
void DoubleLeftArrow_Click(object sender, RoutedEventArgs e)
{
IList currentListItems = CurrentItems as IList;
if (this.DataContext is IMultiSelectControlCommands)
{
var externalCommands = (IMultiSelectControlCommands)this.DataContext;
externalCommands.UnSelectAllItems(currentListItems);
}
else
{
if (null != currentListItems)
{
currentListItems.Clear();
}
}
//updates the available collection
AvailableItemsCollectionView.Refresh();
}
/// <summary>
/// Add all Available Items to Current Items list.
/// </summary>
void DoubleRightArrow_Click(object sender, RoutedEventArgs e)
{
if (this.DataContext is IMultiSelectControlCommands)
{
var externalCommands = (IMultiSelectControlCommands)this.DataContext;
externalCommands.SelectAllItems(AvailableItemsCollectionView);
}
else
{
IList currentListItems = CurrentItems as IList;
if (null != currentListItems)
{
foreach (object obj in AvailableItemsCollectionView)
{
currentListItems.Add(obj);
}
}
}
AvailableItemsCollectionView.Refresh();
}