private void CloseCommandExecute(MultiSelectItem obj)
{
var index = SelectedItems.IndexOf(obj.Item);
SelectedItems.Remove(obj.Item);
if (!(SelectedItems is INotifyCollectionChanged))
{
OnSelectedItems_CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, obj.Item, index));
}
}
private ContentControl GeneratePanelItem(object item)
{
MultiSelectItem panelItem = new MultiSelectItem();
panelItem.Template = selectedItemTemplate;
panelItem.Content = GetItemContent(item);
panelItem.Item = item;
return(panelItem);
}
private MultiSelectItem GenerateContainer(int elementIndex, bool isMultiSelectItem)
{
MultiSelectItem newElement = new MultiSelectItem();
var bind = SetElementBinding(elementIndex, isMultiSelectItem);
newElement.SetBinding(ContentControl.ContentProperty, bind);
newElement.Item = Items[elementIndex];
newElement.MouseDown += (sender, e) =>
{
var item = ((MultiSelectItem)sender).Item;
if (((MultiSelectItem)sender).IsSelected)
{
var index = SelectedItems.IndexOf(item);
SelectedItems.Remove(item);
if (!(SelectedItems is INotifyCollectionChanged))
{
OnSelectedItems_CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, item, index));
}
}
else
{
SelectedItems.Add(item);
if (!(SelectedItems is INotifyCollectionChanged))
{
OnSelectedItems_CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item));
}
}
};
newElement.MouseEnter += (sender, e) =>
{
var index = itemContainers.IndexOf(newElement);
if (index < scroll.VerticalOffset + scroll.ViewportHeight)
{
newElement.Focus();
}
else
{
if (scrollFlag == false)
{
scroll.ScrollToVerticalOffset(scroll.VerticalOffset + 1);
newElement.Focus();
scrollFlag = true;
}
else
{
scrollFlag = false;
}
}
};
newElement.KeyDown += (sender, e) =>
{
if (e.Key == Key.Enter || e.Key == Key.Space)
{
var item = ((MultiSelectItem)sender).Item;
if (((MultiSelectItem)sender).IsSelected)
{
var index = SelectedItems.IndexOf(item);
SelectedItems.Remove(item);
if (!(SelectedItems is INotifyCollectionChanged))
{
OnSelectedItems_CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, item, index));
}
}
else
{
SelectedItems.Add(item);
if (!(SelectedItems is INotifyCollectionChanged))
{
OnSelectedItems_CollectionChanged(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item));
}
}
}
};
return(newElement);
}