internal void RemoveRange(int startIndex, int endIndex)
{
for (int i = startIndex; i <= endIndex; i++)
{
if (i > _items.Count)
{
break;
}
StaggeredItem item = _items[i];
item.Height = 0;
item.Top = 0;
// We must recycle all elements to ensure that it gets the correct context
RecycleElementAt(i);
}
foreach (var kvp in _columnLayout)
{
StaggeredColumnLayout layout = kvp.Value;
for (int i = 0; i < layout.Count; i++)
{
if ((startIndex <= layout[i].Index) && (layout[i].Index <= endIndex))
{
int numToRemove = layout.Count - i;
layout.RemoveRange(i, numToRemove);
break;
}
}
}
}
internal void RemoveFromIndex(int index)
{
if (index >= _items.Count)
{
// Item was added/removed but we haven't realized that far yet
return;
}
int numToRemove = _items.Count - index;
_items.RemoveRange(index, numToRemove);
foreach (var kvp in _columnLayout)
{
StaggeredColumnLayout layout = kvp.Value;
for (int i = 0; i < layout.Count; i++)
{
if (layout[i].Index >= index)
{
numToRemove = layout.Count - i;
layout.RemoveRange(i, numToRemove);
break;
}
}
}
}