// This method is called from DataGrid.OnBeginningEdit/OnCommittingEdit/OnCancelingEdit
// Raises Invoked event when cell begin/cancel/commit edit
internal void RaiseAutomationCellInvokeEvents(DataGridColumn column, DataGridRow row)
{
DataGridItemAutomationPeer dataGridItemAutomationPeer = GetOrCreateItemPeer(row.Item);
if (dataGridItemAutomationPeer != null)
{
DataGridCellItemAutomationPeer cellPeer = dataGridItemAutomationPeer.GetOrCreateCellItemPeer(column);
if (cellPeer != null)
{
cellPeer.RaiseAutomationEvent(AutomationEvents.InvokePatternOnInvoked);
}
}
}
// Private helper returning the automation peer coresponding to cellInfo
// Cell can be virtualized
private DataGridCellItemAutomationPeer GetCellItemPeer(DataGridCellInfo cellInfo)
{
if (cellInfo.IsValid)
{
DataGridItemAutomationPeer dataGridItemAutomationPeer = GetOrCreateItemPeer(cellInfo.Item);
if (dataGridItemAutomationPeer != null)
{
return(dataGridItemAutomationPeer.GetOrCreateCellItemPeer(cellInfo.Column));
}
}
return(null);
}
private void UpdateEventSource()
{
DataGridCell cell = (DataGridCell)Owner;
DataGrid dataGrid = cell.DataGridOwner;
if (dataGrid != null)
{
DataGridAutomationPeer dataGridAutomationPeer = CreatePeerForElement(dataGrid) as DataGridAutomationPeer;
if (dataGridAutomationPeer != null)
{
DataGridItemAutomationPeer itemAutomationPeer = dataGridAutomationPeer.GetOrCreateItemPeer(cell.DataContext);
if (itemAutomationPeer != null)
{
DataGridCellItemAutomationPeer cellItemAutomationPeer = itemAutomationPeer.GetOrCreateCellItemPeer(cell.Column);
this.EventsSource = cellItemAutomationPeer;
}
}
}
}
IRawElementProviderSimple IGridProvider.GetItem(int row, int column)
{
if (row >= 0 && row < this.OwningDataGrid.Items.Count &&
column >= 0 && column < this.OwningDataGrid.Columns.Count)
{
object item = this.OwningDataGrid.Items[row];
DataGridColumn dataGridColumn = this.OwningDataGrid.Columns[column];
this.OwningDataGrid.ScrollIntoView(item, dataGridColumn);
this.OwningDataGrid.UpdateLayout();
DataGridItemAutomationPeer itemPeer = this.GetOrCreateItemPeer(item);
if (itemPeer != null)
{
DataGridCellItemAutomationPeer cellItemPeer = itemPeer.GetOrCreateCellItemPeer(dataGridColumn);
if (cellItemPeer != null)
{
return(ProviderFromPeer(cellItemPeer));
}
}
}
return(null);
}
private void AddSelectedCells(List <IRawElementProviderSimple> cellProviders)
{
if (cellProviders == null)
{
throw new ArgumentNullException("cellProviders");
}
// Add selected cells to selection
if (this.OwningDataGrid.SelectedCells != null)
{
foreach (DataGridCellInfo cellInfo in this.OwningDataGrid.SelectedCells)
{
DataGridItemAutomationPeer itemPeer = this.GetOrCreateItemPeer(cellInfo.Item);
if (itemPeer != null)
{
IRawElementProviderSimple provider = ProviderFromPeer(itemPeer.GetOrCreateCellItemPeer(cellInfo.Column));
if (provider != null)
{
cellProviders.Add(provider);
}
}
}
}
}
