void GroupHeaderButton_Click(object sender, RoutedEventArgs e)
{
GroupHeaderButton presenter = sender as GroupHeaderButton;
Worksheet sheet = _excel.ActiveSheet;
if (((presenter != null) && (sheet != null)) && !_excel.IsEditing)
{
int level = int.Parse(presenter.Level) - 1;
if (level >= 0)
{
_excel.InvalidateRangeGroup();
if (Orientation == Windows.UI.Xaml.Controls.Orientation.Horizontal)
{
RowGroupHeaderExpandExtent rowGroupHeaderExpandExtent = new RowGroupHeaderExpandExtent(level);
if (!_excel.RaiseRangeGroupStateChanging(true, -1, level))
{
RowGroupHeaderExpandUndoAction command = new RowGroupHeaderExpandUndoAction(sheet, rowGroupHeaderExpandExtent);
_excel.DoCommand(command);
_excel.RaiseRangeGroupStateChanged(true, -1, level);
}
}
else if (Orientation == Windows.UI.Xaml.Controls.Orientation.Vertical)
{
ColumnGroupHeaderExpandExtent columnGroupHeaderExpandExtent = new ColumnGroupHeaderExpandExtent(level);
ColumnGroupHeaderExpandUndoAction action2 = new ColumnGroupHeaderExpandUndoAction(sheet, columnGroupHeaderExpandExtent);
if (!_excel.RaiseRangeGroupStateChanging(false, -1, level))
{
_excel.DoCommand(action2);
_excel.RaiseRangeGroupStateChanged(false, -1, level);
}
}
}
}
}
protected override Size MeasureOverride(Size availableSize)
{
int maxLevel = GetMaxLevel(Orientation);
double size = CalcMinWidthOrHeight(availableSize, Orientation);
if (maxLevel == -1 || size == 0.0)
{
_maxLevel = -1;
_lastSize = 0;
return(availableSize);
}
if (_maxLevel == maxLevel && _lastSize == size)
{
foreach (UIElement elem in Children)
{
elem.Measure(availableSize);
}
return(availableSize);
}
_maxLevel = maxLevel;
_lastSize = size;
Children.Clear();
if ((_headButtons != null) && (_headButtons.Count > 0))
{
foreach (GroupHeaderButton rbp in _headButtons)
{
rbp.Click -= GroupHeaderButton_Click;
}
}
_headButtons = new List <GroupHeaderButton>();
for (int i = 0; i < maxLevel + 2; i++)
{
GroupHeaderButton presenter = new GroupHeaderButton();
presenter.Click += GroupHeaderButton_Click;
presenter.Level = (i + 1).ToString();
presenter.Height = size;
presenter.Width = size;
Children.Add(presenter);
_headButtons.Add(presenter);
}
MeasureBorderLines(availableSize);
return(availableSize);
}