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; } } } }