public override void OnApplyTemplate()
{
base.OnApplyTemplate();
ParentGrid = TreeHelper.FindParent<DynamicGrid>(this);
ParentGrid.ColumnHeadersPresenter = this;
}
internal void HookOwner()
{
if (_owningGrid == null) {
DynamicGrid owner = ItemsControl.GetItemsOwner(this) as DynamicGrid;
if (owner == null) {
throw new NotSupportedException("hey!");
}
_owningGrid = owner;
}
}
internal void CleanUp(DynamicGrid owner, object item)
{
// when VirtualizationMode == Recycling, next lines must not be called as system calls them
var mode = VirtualizingPanel.GetVirtualizationMode(ParentGrid);
if (mode != VirtualizationMode.Recycling) {
foreach (var cell in _realizedCells) {
cell.CleanUp();
}
_realizedCells.Clear();
}
}
internal void Prepare(DynamicGrid owner, object item)
{
if (!(item is IList)) {
throw new NotSupportedException("JointCollectionGridRow supports only IList for item");
}
ParentGrid = owner;
var items = (IList)item;
ItemsSource = items;
}