private bool EnsureRowVisibleByTraverserDown(
RadScrollBarElement vScrollBar,
GridViewRowInfo rowInfo,
ScrollableRowsContainerElement rows,
float delta)
{
GridRowElement child = (GridRowElement)rows.Children[rows.Children.Count - 1];
GridTraverser enumerator = (GridTraverser)((IEnumerable)this.RowScroller).GetEnumerator();
while (enumerator.Current is GridViewDetailsRowInfo)
{
enumerator.MoveNext();
}
enumerator.MovePrevious();
if (enumerator.Current == rowInfo)
{
return(this.ChangeScrollbarValue(vScrollBar, vScrollBar.Value - (int)delta));
}
do
{
;
}while (enumerator.MoveNext() && enumerator.Current != child.RowInfo);
enumerator.MoveNext();
if (enumerator.Current == rowInfo)
{
return(this.ChangeScrollbarValue(vScrollBar, vScrollBar.Value + (int)delta));
}
return(false);
}
internal static GridViewRowInfo NavigateAfterRemove(
GridViewRowInfo startFrom,
List <GridViewRowInfo> notAllowedRows)
{
GridViewRowInfo row = startFrom;
GridTraverser gridTraverser = new GridTraverser(row.ViewInfo);
gridTraverser.GoToRow(row);
GridTraverser.GridTraverserPosition position = gridTraverser.Position;
GridViewRowInfo newCurrentRowInfo = GridViewRowCollection.ChangeTheChildViewAfterRemove(startFrom);
if (newCurrentRowInfo != null)
{
return(newCurrentRowInfo);
}
while (gridTraverser.MoveNext())
{
if (gridTraverser.Current.CanBeCurrent && (notAllowedRows == null || !notAllowedRows.Contains(gridTraverser.Current)))
{
if (gridTraverser.Current is GridViewGroupRowInfo)
{
if (!gridTraverser.Current.IsExpanded)
{
gridTraverser.Current.IsExpanded = true;
}
}
else
{
if (gridTraverser.Current is GridViewDataRowInfo || gridTraverser.Current is GridViewNewRowInfo)
{
newCurrentRowInfo = gridTraverser.Current;
break;
}
break;
}
}
}
if (newCurrentRowInfo == null)
{
gridTraverser.Position = position;
gridTraverser.ProcessHierarchy = true;
while (gridTraverser.MovePrevious())
{
if (gridTraverser.Current.CanBeCurrent && (notAllowedRows == null || !notAllowedRows.Contains(gridTraverser.Current)))
{
if (gridTraverser.Current is GridViewGroupRowInfo)
{
if (!gridTraverser.Current.IsExpanded)
{
gridTraverser.Current.IsExpanded = true;
gridTraverser.Position = position;
}
}
else
{
if (gridTraverser.Current is GridViewDataRowInfo || gridTraverser.Current is GridViewNewRowInfo)
{
newCurrentRowInfo = gridTraverser.Current;
break;
}
position = gridTraverser.Position;
}
}
}
}
if (newCurrentRowInfo == null)
{
return((GridViewRowInfo)null);
}
if (GridViewRowCollection.HasDeletedParentRow(newCurrentRowInfo, notAllowedRows))
{
newCurrentRowInfo = GridViewRowCollection.NavigateAfterRemove(newCurrentRowInfo.Parent as GridViewRowInfo, notAllowedRows);
}
return(newCurrentRowInfo);
}
