protected internal void RaiseMergeRowCells(AllowMergeRowCellsEventArgs args)
{
if (AllowMergeRowCells != null)
{
AllowMergeRowCells(this, args);
}
}
protected override void CalcRowCellsInfo(RowInfo ri)
{
base.CalcRowCellsInfo(ri);
if (!((MyTreeList)TreeList).OptionsView.AllowHorizontalMerge)
{
return;
}
if (TreeList.OptionsSelection.EnableAppearanceFocusedRow)
{
TreeList.OptionsSelection.EnableAppearanceFocusedRow = false;
}
for (int i = ri.Cells.Count - 1; i > 0; i--)
{
string prevDisplayText = GetCellDisplayText(ri, i - 1);
string currDisplayText = GetCellDisplayText(ri, i);
AllowMergeRowCellsEventArgs args = new AllowMergeRowCellsEventArgs(ri, i, i - 1);
((MyTreeList)TreeList).RaiseMergeRowCells(args);
if (args.Merge == DevExpress.Utils.DefaultBoolean.False)
{
continue;
}
if ((prevDisplayText == currDisplayText) || (args.Merge == DevExpress.Utils.DefaultBoolean.True))
{
CellInfo prevCell = ri.Cells[i - 1];
CellInfo currCell = ri.Cells[i];
for (int j = ri.Lines.Count - 1; j >= 0; j--)
{
LineInfo lineInfo = ri.Lines[j];
if (lineInfo.Appearance != PaintAppearance.VertLine)
{
continue;
}
if (lineInfo.Bounds.X == prevCell.Bounds.X + prevCell.Bounds.Width)
{
ri.Lines.RemoveAt(j);
break;
}
}
Rectangle mergedBounds = new Rectangle(prevCell.Bounds.X, prevCell.Bounds.Y, currCell.Bounds.Right - prevCell.Bounds.X, prevCell.Bounds.Height);
prevCell.SetBounds(mergedBounds, new System.Windows.Forms.Padding(0));
mergedBounds.Inflate(-1, -1);
prevCell.CalcViewInfo(GInfo.Cache, Point.Empty);
prevCell.EditorViewInfo.Bounds = mergedBounds;
ri.Cells.RemoveRange(i - 1, 2);
ri.Cells.Insert(i - 1, prevCell);
base.UpdateCellInfo(prevCell, prevCell.RowInfo.Node);
}
}
}
private void treeList1_AllowMergeRowCells(object sender, AllowMergeRowCellsEventArgs e)
{
if (e.Node.HasChildren == true)
{
e.Merge = DevExpress.Utils.DefaultBoolean.True;
}
else
{
e.Merge = DevExpress.Utils.DefaultBoolean.Default;
}
}