/// <summary>
/// Handles SuperGrid DragDrop events
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void SuperGridControlDragDrop(object sender, DragEventArgs e)
{
SuperGridControl sg = sender as SuperGridControl;
if (sg != null)
{
ClearStyles(sg);
Point pt = sg.PointToClient(new Point(e.X, e.Y));
GridElement item = sg.GetElementAt(pt.X, pt.Y);
// If the data we are dropping is from a SuperGrid, then
// be a little bit more discerning about how we drop it
if (_SrcGrid != null)
{
SelectedElementCollection items =
(SelectedElementCollection)e.Data.GetData(typeof(SelectedElementCollection));
if (item is GridCell)
{
if (_SrcElement is GridRow)
{
DropSgRow(e, ((GridCell)item).GridRow, items);
}
else
{
DropSgCell((GridCell)item, items);
}
}
else if (item is GridRow)
{
DropSgRow(e, (GridRow)item, items);
}
else if (item is GridColumnHeader)
{
DropSgColumnHeader((GridColumnHeader)item, items, pt);
}
else if (item is GridPanel)
{
DropSgPanel((GridPanel)item, items);
}
}
else
{
if (item is GridCell)
{
if (_SrcElement is GridRow)
{
DropRow(e, ((GridCell)item).GridRow);
}
else
{
DropCell(e, (GridCell)item);
}
}
else if (item is GridRow)
{
DropRow(e, (GridRow)item);
}
else if (item is GridColumnHeader)
{
DropColumnHeader(e, (GridColumnHeader)item, pt);
}
}
ClearDragHighlight();
}
}
/// <summary>
/// Handles SuperGrid DragOver events
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void SuperGridControlDragOver(object sender, DragEventArgs e)
{
SuperGridControl sg = sender as SuperGridControl;
if (sg != null)
{
ClearDragHighlight();
e.Effect = DragDropEffects.None;
Point clientPoint = sg.PointToClient(new Point(e.X, e.Y));
GridElement item = sg.GetElementAt(clientPoint.X, clientPoint.Y);
if (item is GridCell)
{
if (_SrcElement is GridRow)
{
item = ((GridCell)item).GridRow;
}
else if (_SrcElement == null || _SrcElement is GridCell)
{
_DragOverCell = (GridCell)item;
_DragOverCell.CellStyles.Default.Background = new Background(Color.AliceBlue);
e.Effect = DragDropEffects.Copy | DragDropEffects.Move;
}
}
if (item is GridRow)
{
if (_SrcElement == null || _SrcElement is GridRow)
{
_DragOverRow = (GridRow)item;
_DragOverRow.CellStyles.Default.Background = new Background(Color.AliceBlue);
e.Effect = DragDropEffects.Copy | DragDropEffects.Move;
}
}
else if (item is GridColumnHeader)
{
if (_SrcElement is GridColumn)
{
GridColumn doColumn = ((GridColumnHeader)item).GetHitColumn(clientPoint);
if (((GridColumn)_SrcElement).EditorType == doColumn.EditorType)
{
_DragOverColumn = doColumn;
_DragOverColumn.CellStyles.Default.Background = new Background(Color.AliceBlue);
e.Effect = DragDropEffects.Copy | DragDropEffects.Move;
}
}
else if (_SrcElement == null || _SrcElement is GridRow)
{
e.Effect = DragDropEffects.Copy | DragDropEffects.Move;
}
}
if (sg != _SrcGrid)
{
e.Effect &= ~(DragDropEffects.Move);
}
else
{
if ((e.KeyState & 8) != 8)
{
e.Effect &= ~(DragDropEffects.Copy);
}
}
}
}