protected override void InsertItem(int columnIndex, DataGridColumn dataGridColumn)
{
try
{
_owningGrid.NoCurrentCellChangeCount++;
if (_owningGrid.InDisplayIndexAdjustments)
{
// We are within columns display indexes adjustments. We do not allow changing the column collection while adjusting display indexes.
throw DataGridError.DataGrid.CannotChangeColumnCollectionWhileAdjustingDisplayIndexes();
}
if (dataGridColumn == null)
{
throw new ArgumentNullException("dataGridColumn");
}
int columnIndexWithFiller = columnIndex;
if (dataGridColumn != RowGroupSpacerColumn && RowGroupSpacerColumn.IsRepresented)
{
columnIndexWithFiller++;
}
// get the new current cell coordinates
DataGridCellCoordinates newCurrentCellCoordinates = _owningGrid.OnInsertingColumn(columnIndex, dataGridColumn);
// insert the column into our internal list
ItemsInternal.Insert(columnIndexWithFiller, dataGridColumn);
dataGridColumn.Index = columnIndexWithFiller;
dataGridColumn.OwningGrid = _owningGrid;
dataGridColumn.RemoveEditingElement();
if (dataGridColumn.IsVisible)
{
VisibleEdgedColumnsWidth += dataGridColumn.ActualWidth;
}
// continue with the base insert
_owningGrid.OnInsertedColumn_PreNotification(dataGridColumn);
_owningGrid.OnColumnCollectionChanged_PreNotification(true /*columnsGrew*/);
if (dataGridColumn != RowGroupSpacerColumn)
{
base.InsertItem(columnIndex, dataGridColumn);
}
_owningGrid.OnInsertedColumn_PostNotification(newCurrentCellCoordinates, dataGridColumn.DisplayIndex);
_owningGrid.OnColumnCollectionChanged_PostNotification(true /*columnsGrew*/);
}
finally
{
_owningGrid.NoCurrentCellChangeCount--;
}
}
private void RemoveItemPrivate(int columnIndex, bool isSpacer)
{
try
{
_owningGrid.NoCurrentCellChangeCount++;
if (_owningGrid.InDisplayIndexAdjustments)
{
// We are within columns display indexes adjustments. We do not allow changing the column collection while adjusting display indexes.
throw DataGridError.DataGrid.CannotChangeColumnCollectionWhileAdjustingDisplayIndexes();
}
int columnIndexWithFiller = columnIndex;
if (!isSpacer && RowGroupSpacerColumn.IsRepresented)
{
columnIndexWithFiller++;
}
DataGridColumn dataGridColumn = ItemsInternal[columnIndexWithFiller];
DataGridCellCoordinates newCurrentCellCoordinates = _owningGrid.OnRemovingColumn(dataGridColumn);
ItemsInternal.RemoveAt(columnIndexWithFiller);
if (dataGridColumn.IsVisible)
{
VisibleEdgedColumnsWidth -= dataGridColumn.ActualWidth;
}
dataGridColumn.OwningGrid = null;
dataGridColumn.RemoveEditingElement();
// continue with the base remove
_owningGrid.OnRemovedColumn_PreNotification(dataGridColumn);
_owningGrid.OnColumnCollectionChanged_PreNotification(false /*columnsGrew*/);
if (!isSpacer)
{
base.RemoveItem(columnIndex);
}
_owningGrid.OnRemovedColumn_PostNotification(newCurrentCellCoordinates);
_owningGrid.OnColumnCollectionChanged_PostNotification(false /*columnsGrew*/);
}
finally
{
_owningGrid.NoCurrentCellChangeCount--;
}
}
public DataGridCellCoordinates(DataGridCellCoordinates dataGridCellCoordinates) : this(dataGridCellCoordinates.ColumnIndex, dataGridCellCoordinates.Slot)
{
}