internal void RaiseAutomationInvokeEvents(DataGridEditingUnit editingUnit, DataGridColumn column, DataGridRow row)
{
switch (editingUnit)
{
case DataGridEditingUnit.Cell:
{
DataGridCell cell = row.Cells[column.Index];
AutomationPeer peer = FromElement(cell);
if (peer != null)
{
peer.InvalidatePeer();
}
else
{
peer = CreatePeerForElement(cell);
}
if (peer != null)
{
peer.RaiseAutomationEvent(AutomationEvents.InvokePatternOnInvoked);
}
break;
}
case DataGridEditingUnit.Row:
{
DataGridItemAutomationPeer peer = GetOrCreateItemPeer(row.DataContext);
peer.RaiseAutomationEvent(AutomationEvents.InvokePatternOnInvoked);
break;
}
}
}
// This method is called from DataGrid.OnBeginningEdit/OnCommittingEdit/OnCancelingEdit
// Raises Invoked event when row begin/cancel/commit edit
internal void RaiseAutomationRowInvokeEvents(DataGridRow row)
{
DataGridItemAutomationPeer dataGridItemAutomationPeer = FindOrCreateItemAutomationPeer(row.Item) as DataGridItemAutomationPeer;
if (dataGridItemAutomationPeer != null)
{
dataGridItemAutomationPeer.RaiseAutomationEvent(AutomationEvents.InvokePatternOnInvoked);
}
}
internal void RaiseAutomationSelectionEvents(SelectionChangedEventArgs e)
{
// If the result of an AddToSelection or RemoveFromSelection is a single selected item,
// then all we raise is the ElementSelectedEvent for single item
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementSelected) &&
this.OwningDataGrid.SelectedItems.Count == 1)
{
if (this.OwningDataGrid.SelectedItem != null && _itemPeers.ContainsKey(this.OwningDataGrid.SelectedItem))
{
DataGridItemAutomationPeer peer = _itemPeers[this.OwningDataGrid.SelectedItem];
peer.RaiseAutomationEvent(AutomationEvents.SelectionItemPatternOnElementSelected);
}
}
else
{
int i;
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementAddedToSelection))
{
for (i = 0; i < e.AddedItems.Count; i++)
{
if (e.AddedItems[i] != null && _itemPeers.ContainsKey(e.AddedItems[i]))
{
DataGridItemAutomationPeer peer = _itemPeers[e.AddedItems[i]];
peer.RaiseAutomationEvent(AutomationEvents.SelectionItemPatternOnElementAddedToSelection);
}
}
}
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection))
{
for (i = 0; i < e.RemovedItems.Count; i++)
{
if (e.RemovedItems[i] != null && _itemPeers.ContainsKey(e.RemovedItems[i]))
{
DataGridItemAutomationPeer peer = _itemPeers[e.RemovedItems[i]];
peer.RaiseAutomationEvent(AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection);
}
}
}
}
}
