IRawElementProviderSimple[] ISelectionProvider.GetSelection()
{
EnsureEnabled();
if (this.OwningDataGrid != null &&
this.OwningDataGridPeer != null &&
this.OwningDataGrid.SelectedItems != null &&
_group.GroupItems.Count /*ItemCount*/ > 0)
{
DataGridRowGroupInfo groupInfo = this.OwningDataGrid.RowGroupInfoFromCollectionViewGroup(_group);
if (groupInfo != null)
{
// See which of the selected items are contained within this group
List <IRawElementProviderSimple> selectedProviders = new List <IRawElementProviderSimple>();
int startRowIndex = groupInfo.Slot - this.OwningDataGrid.RowGroupHeadersTable.GetIndexCount(0, groupInfo.Slot) + 1;
foreach (object item in this.OwningDataGrid.GetSelectionInclusive(startRowIndex, startRowIndex + _group.GroupItems.Count /*ItemCount*/ - 1))
{
DataGridItemAutomationPeer peer = this.OwningDataGridPeer.GetOrCreateItemPeer(item);
if (peer != null)
{
selectedProviders.Add(ProviderFromPeer(peer));
}
}
return(selectedProviders.ToArray());
}
}
return(null);
}
void IScrollItemProvider.ScrollIntoView()
{
EnsureEnabled();
if (this.OwningDataGrid != null)
{
DataGridRowGroupInfo groupInfo = this.OwningDataGrid.RowGroupInfoFromCollectionViewGroup(_group);
if (groupInfo != null)
{
this.OwningDataGrid.ScrollIntoView(groupInfo.CollectionViewGroup, null);
}
}
}
IRawElementProviderSimple IGridProvider.GetItem(int row, int column)
{
EnsureEnabled();
if (this.OwningDataGrid != null &&
this.OwningDataGrid.DataConnection != null &&
row >= 0 && row < _group.GroupItems.Count /*ItemCount*/ &&
column >= 0 && column < this.OwningDataGrid.Columns.Count)
{
DataGridRowGroupInfo groupInfo = this.OwningDataGrid.RowGroupInfoFromCollectionViewGroup(_group);
if (groupInfo != null)
{
// Adjust the row index to be relative to the DataGrid instead of the group
row = groupInfo.Slot - this.OwningDataGrid.RowGroupHeadersTable.GetIndexCount(0, groupInfo.Slot) + row + 1;
Debug.Assert(row >= 0, "Expected positive row.");
Debug.Assert(row < this.OwningDataGrid.DataConnection.Count, "Expected row smaller than this.OwningDataGrid.DataConnection.Count.");
int slot = this.OwningDataGrid.SlotFromRowIndex(row);
if (!this.OwningDataGrid.IsSlotVisible(slot))
{
object item = this.OwningDataGrid.DataConnection.GetDataItem(row);
this.OwningDataGrid.ScrollIntoView(item, this.OwningDataGrid.Columns[column]);
}
Debug.Assert(this.OwningDataGrid.IsSlotVisible(slot), "Expected OwningDataGrid.IsSlotVisible(slot) is true.");
DataGridRow dgr = this.OwningDataGrid.DisplayData.GetDisplayedElement(slot) as DataGridRow;
// the first cell is always the indentation filler cell if grouping is enabled, so skip it
Debug.Assert(column + 1 < dgr.Cells.Count, "Expected column + 1 smaller than dgr.Cells.Count.");
DataGridCell cell = dgr.Cells[column + 1];
AutomationPeer peer = CreatePeerForElement(cell);
if (peer != null)
{
return(ProviderFromPeer(peer));
}
}
}
return(null);
}
