private GroupTreeItem MakeGroupTree(GroupHeaderBand groupBand)
{
GroupTreeItem rootItem = new GroupTreeItem(null);
DataSourceBase dataSource = groupBand.DataSource;
bool isFirstRow = true;
// cycle through rows
dataSource.First();
while (dataSource.HasMoreRows)
{
if (isFirstRow)
{
InitGroupItem(groupBand, rootItem);
}
else
{
CheckGroupItem(groupBand, rootItem);
}
dataSource.Next();
isFirstRow = false;
if (Report.Aborted)
{
break;
}
}
return(rootItem);
}
private void InitGroupItem(GroupHeaderBand header, GroupTreeItem curItem)
{
while (header != null)
{
header.ResetGroupValue();
header.AbsRowNo = 0;
header.RowNo = 0;
curItem = curItem.AddItem(new GroupTreeItem(header));
curItem.RowCount++;
header = header.NestedGroup;
}
}
private void CheckGroupItem(GroupHeaderBand header, GroupTreeItem curItem)
{
while (header != null)
{
if (header.GroupValueChanged())
{
InitGroupItem(header, curItem);
break;
}
header = header.NestedGroup;
curItem = curItem.LastItem;
curItem.RowCount++;
}
}
private void ShowGroupTree(GroupTreeItem root)
{
if (root.Band != null)
{
root.Band.GroupDataBand.DataSource.CurrentRowNo = root.RowNo;
ShowGroupHeader(root.Band);
}
if (root.Items.Count == 0)
{
if (root.RowCount != 0)
{
int rowCount = root.RowCount;
int maxRows = root.Band.GroupDataBand.MaxRows;
if (maxRows > 0 && rowCount > maxRows)
{
rowCount = maxRows;
}
bool keepFirstRow = NeedKeepFirstRow(root.Band);
bool keepLastRow = NeedKeepLastRow(root.Band.GroupDataBand);
RunDataBand(root.Band.GroupDataBand, rowCount, keepFirstRow, keepLastRow);
}
}
else
{
ShowDataHeader(root.FirstItem.Band);
for (int i = 0; i < root.Items.Count; i++)
{
GroupTreeItem item = root.Items[i];
item.Band.IsFirstRow = i == 0;
item.Band.IsLastRow = i == root.Items.Count - 1;
ShowGroupTree(item);
if (Report.Aborted)
{
break;
}
}
ShowDataFooter(root.FirstItem.Band);
}
if (root.Band != null)
{
ShowGroupFooter(root.Band);
}
}
public GroupTreeItem AddItem(GroupTreeItem item)
{
Items.Add(item);
return(item);
}
