protected sealed override void OpenEdit(RowManager rowManager)
{
Debug.Assert(rowManager == RowManager);
KeepInitialInputElement(rowManager);
if (rowManager.VirtualRow != null)
{
_insertingRow = rowManager.VirtualRow;
_insertingRow.DataRow = DataSet.BeginAdd();
}
else
{
_insertingRow = new RowPresenter(rowManager, DataSet.BeginAdd());
}
_insertingRow.RawIndex = InsertingRowRawIndex;
if (rowManager.VirtualRowPlacement == VirtualRowPlacement.Head)
{
rowManager.VirtualRow = new RowPresenter(rowManager, 0);
}
else if (rowManager.VirtualRowPlacement == VirtualRowPlacement.Tail)
{
rowManager.VirtualRow = new RowPresenter(rowManager, -1);
}
else if (rowManager.VirtualRow != null)
{
rowManager.VirtualRow = null;
}
rowManager.Editing = this;
rowManager.OnRowsChanged();
rowManager.SetCurrentRow(_insertingRow, false);
}
protected sealed override RowPresenter CommitEdit(RowManager rowManager, bool staysOnInserting)
{
Debug.Assert(!rowManager.IsEditing);
Debug.Assert(rowManager == RowManager);
DisposeInsertingRow(false);
var newDataRow = DataSet.EndAdd(CommitEditIndex);
var newCurrentRow = rowManager[newDataRow];
if (!rowManager.CurrentRowChangeSuspended)
{
if (newCurrentRow != null)
{
rowManager.CurrentRow = newCurrentRow;
}
}
if (staysOnInserting)
{
StayOnInserting(rowManager, newCurrentRow);
var currentView = rowManager.CurrentRow?.View;
if (currentView != null && currentView.ContainsKeyboardFocus() && InitialInputElement != null && InitialInputElement != currentView.ActiveInputElement &&
(InitialInputElement as DependencyObject).FindVisaulAncestor <RowView>() == currentView)
{
InitialInputElement.Focus();
}
}
return(newCurrentRow);
}
public override void OnRowsChanged(RowManager rowManager)
{
if (rowManager.CurrentRow.IsDisposed)
{
CancelEdit(rowManager);
}
}
protected InsertHandler(RowManager rowManager, RowPresenter reference)
{
Debug.Assert(rowManager != null);
Debug.Assert(reference == null || reference.RowManager == rowManager);
RowManager = rowManager;
Reference = reference;
}
protected override RowPresenter CommitEdit(RowManager rowManager, bool staysOnInserting)
{
var currentRow = rowManager.CurrentRow;
currentRow.DataRow.EndEdit();
return(currentRow);
}
protected sealed override void RollbackEdit(RowManager rowManager)
{
Debug.Assert(!rowManager.IsEditing);
Debug.Assert(rowManager == RowManager);
DataSet.CancelAdd();
DisposeInsertingRow(true);
}
private void KeepInitialInputElement(RowManager rowManager)
{
var currentView = rowManager.CurrentRow?.View;
if (currentView != null)
{
InitialInputElement = currentView.ActiveInputElement;
}
}
private void DisposeInsertingRow(bool isRollback)
{
_insertingRow.DataRow = null;
_insertingRow.Dispose();
if (isRollback)
{
RowManager._suggestedCurrentRow = CurrentRowAfterRollback;
RowManager.OnRowsChanged();
}
}
public override void OnRowsChanged(RowManager rowManager)
{
if (Reference != null)
{
if (Reference.IsDisposed)
{
Reference = ReferenceForDisposed;
}
else
{
RefreshReferenceRawIndex();
}
}
if (rowManager.VirtualRowPlacement == VirtualRowPlacement.Tail)
{
rowManager.VirtualRow.RawIndex = rowManager.Rows.Count - 1;
}
if (InsertingRow != null)
{
InsertingRow.RawIndex = InsertingRowRawIndex;
}
}
private static EditHandler GetCurrentRowEditHandler(RowManager rowManager)
{
var currentRow = rowManager.CurrentRow;
if (currentRow.IsVirtual)
{
var virtualRowPlacement = rowManager.VirtualRowPlacement;
if (virtualRowPlacement == VirtualRowPlacement.Head)
{
return(InsertHandler.EditVirtualHead(rowManager));
}
else
{
Debug.Assert(virtualRowPlacement == VirtualRowPlacement.Tail);
return(InsertHandler.EditVirtualTail(rowManager));
}
}
else
{
return(EditCurrentHandler.Singleton);
}
}
public InsertAfterHandler(RowManager rowManager, RowPresenter reference)
: base(rowManager, reference)
{
}
protected override void StayOnInserting(RowManager rowManager, RowPresenter rowInserted)
{
rowManager.BeginInsertBefore(null, rowInserted);
}
public static InsertHandler After(RowManager rowManager, RowPresenter reference)
{
return(new InsertAfterHandler(rowManager, reference));
}
public static InsertHandler Before(RowManager rowManager, RowPresenter reference)
{
return(new InsertBeforeHandler(rowManager, reference));
}
public EditVirtualTailHandler(RowManager rowManager)
: base(rowManager, null)
{
}
protected override void StayOnInserting(RowManager rowManager, RowPresenter rowInserted)
{
Debug.Assert(rowManager.VirtualRow != null);
rowManager.CurrentRow = rowManager.VirtualRow;
}
protected abstract void StayOnInserting(RowManager rowManager, RowPresenter rowInserted);
