protected override void ProcessKeyDown(KeyRoutedEventArgs args)
{
var currentKey = args.Key;
if (TreeGrid.FlowDirection == FlowDirection.RightToLeft)
{
ChangeFlowDirectionKey(ref currentKey);
}
var previousCurrentCellIndex = this.CurrentCellManager.CurrentRowColumnIndex;
var node = TreeGrid.GetNodeAtRowIndex(this.CurrentCellManager.CurrentRowColumnIndex.RowIndex);
if (currentKey == Key.Left || currentKey == Key.Right)
{
if (this.CurrentCellManager.CurrentRowColumnIndex.RowIndex <= this.TreeGrid.GetHeaderIndex())
{
return;
}
if (node != null)
{
if (node.IsExpanded && currentKey == Key.Left)
{
TreeGrid.CollapseNode(node);
}
else if (!node.IsExpanded && currentKey == Key.Right)
{
TreeGrid.ExpandNode(node);
}
}
args.Handled = true;
return;
}
else if (currentKey == Key.Space)
{
if (node != null)
{
var isCheckedValue = node.IsChecked;
if (isCheckedValue == true)
{
//node.SetCheckedState(null);
node.SetCheckedState(false);
}
else if (isCheckedValue == null)
{
node.SetCheckedState(false);
}
else
{
node.SetCheckedState(true);
}
}
args.Handled = true;
return;
}
base.ProcessKeyDown(args);
}
protected override void ProcessOnTapped(MouseButtonEventArgs e, RowColumnIndex currentRowColumnIndex)
{
if (currentRowColumnIndex.RowIndex <= this.TreeGrid.GetHeaderIndex())
{
return;
}
var node = TreeGrid.GetNodeAtRowIndex(currentRowColumnIndex.RowIndex);
if (node != null)
{
if (node.IsExpanded)
{
TreeGrid.CollapseNode(node);
}
else if (!node.IsExpanded)
{
TreeGrid.ExpandNode(node);
}
}
base.ProcessOnTapped(e, currentRowColumnIndex);
}
