protected override void OnTemplateChanged(ControlTemplate oldTemplate, ControlTemplate newTemplate)
{
if (this.previousGrid == null)
{
return;
}
foreach (FrameworkElement frameworkElement in this.previousGrid.Children)
{
ExpandoListItem expandoListItem = frameworkElement as ExpandoListItem;
if (expandoListItem != null)
{
expandoListItem.DataContext = (object)null;
}
}
this.previousGrid = (Grid)null;
base.OnTemplateChanged(oldTemplate, newTemplate);
}
private void UpdateGrid()
{
Grid grid = this.GetTemplateChild("PART_MainGrid") as Grid;
bool flag = this.Orientation == Orientation.Vertical;
if (grid == null)
{
return;
}
this.previousGrid = grid;
foreach (FrameworkElement frameworkElement in grid.Children)
{
ExpandoListItem expandoListItem = frameworkElement as ExpandoListItem;
if (expandoListItem != null)
{
expandoListItem.Content = (object)null;
}
}
grid.Children.Clear();
grid.ColumnDefinitions.Clear();
grid.RowDefinitions.Clear();
int num = 0;
for (int index = 0; index < this.Items.Count; ++index)
{
ExpandoListItemModel expandoListItemModel = this.Items[index] as ExpandoListItemModel;
if (expandoListItemModel == null || !expandoListItemModel.IsForcedInvisible)
{
ExpandoListItem expandoListItem = new ExpandoListItem();
expandoListItem.SetValue(AutomationElement.IdProperty, (object)("Expando_Item_" + (object)index));
expandoListItem.DataContext = (object)expandoListItemModel;
expandoListItem.Style = this.ExpandoListItemStyle;
if (flag)
{
Grid.SetRow((UIElement)expandoListItem, num);
}
else
{
Grid.SetColumn((UIElement)expandoListItem, num);
}
grid.Children.Add((UIElement)expandoListItem);
if (flag)
{
RowDefinition rowDefinition = new RowDefinition();
rowDefinition.DataContext = (object)expandoListItemModel;
rowDefinition.Style = this.ExpandoDefinitionStyle;
grid.RowDefinitions.Add(rowDefinition);
}
else
{
ColumnDefinition columnDefinition = new ColumnDefinition();
columnDefinition.DataContext = (object)expandoListItemModel;
columnDefinition.Style = this.ExpandoDefinitionStyle;
grid.ColumnDefinitions.Add(columnDefinition);
}
if (grid.Children.Count > 1)
{
ExpandoSplitter expandoSplitter = new ExpandoSplitter();
expandoSplitter.SetValue(AutomationElement.IdProperty, (object)("Expando_Splitter_" + (object)index));
expandoSplitter.Style = this.ExpandoSplitterStyle;
if (flag)
{
expandoSplitter.VerticalAlignment = VerticalAlignment.Top;
Grid.SetRow((UIElement)expandoSplitter, num);
}
else
{
expandoSplitter.HorizontalAlignment = HorizontalAlignment.Left;
Grid.SetColumn((UIElement)expandoSplitter, num);
}
grid.Children.Add((UIElement)expandoSplitter);
}
++num;
}
}
}
