public void Paste()
{
int row = grid.Rows.GetFirstRow(DataGridViewElementStates.Selected);
// If there's no item selected, just paste at the end.
if (row < 0 || row >= source.Count)
{
row = source.Count;
}
var data = Clipboard.GetDataObject();
var entries = WordListEntries.FromDataObject(data);
if (entries != null && entries.Items.Count > 0)
{
Paste(entries, row);
}
else
{
string text = Clipboard.GetText().Trim();
if (text.Contains("\n"))
{
return;
}
// If the cell is being edited, Ctrl-V will be handled by the textbox itself
// so this code is only visited when a paste occurs with textual data on an
// entry which isn't currently being edited.
WordListEntry item = RowSource(row);
if (item == null || row == rowInEdit)
{
Paste(new WordListEntries(source, new[] { new WordListEntry(source, text, string.Empty) }), row);
return;
}
string phrase = item.Phrase, translation = item.Translation;
if (grid.CurrentCellAddress.X == 0)
{
phrase = text;
}
else
{
translation = text;
}
if (row >= 0 && row < source.Count)
{
// Re-create the row source so that an undo list entry gets made.
source[row] = new WordListEntry(source, phrase, translation);
if (!grid.IsRowVisible(row))
{
grid.FirstDisplayedScrollingRowIndex = row;
}
}
}
}
// Finishes the drag operation and updates the selection.
void grid_DragDrop(object sender, DragEventArgs e)
{
grid.RemoveDropMarker();
var clientPoint = grid.PointToClient(new Point(e.X, e.Y));
int dropRow = GetDropRow(clientPoint.X, clientPoint.Y);
if (dropRow < 0)
{
return;
}
if (dropRow >= source.Count)
{
dropRow = source.Count;
}
var entries = WordListEntries.FromDataObject(e.Data);
// Were the entries moved or copied?
bool moved = false;
if (entries != null && entries.WordList == this.source)
{
// Copying from the grid to itself requires a bit more care.
if (e.Effect == DragDropEffects.Move)
{
moved = true;
// Dragging rows from this grid to itself: i.e. re-ordering the rows.
source.MoveRows(new List <int>(entries.Indices), dropRow);
// Set the drag result to None, so that the results won't be removed *again*.
e.Effect = DragDropEffects.None;
}
else
{
CopyRowsFromTo(entries, dropRow);
}
}
else if (entries != null)
{
// Copying/moving from some other word list, or a non-wordlist source
CopyRowsFromTo(entries, dropRow);
}
// TODO: This doesn't seem to work if the drop row is the last row in the grid.
if (entries != null && entries.Items.Count > 0)
{
int firstRow = dropRow;
// If we're moving, not copying, we don't know where the rows were actually put,
// because the rows may have been shifted. Instead, find where they actually are.
if (moved)
{
firstRow = source.IndexOf(entries.Items[0]);
}
if (firstRow > -1)
{
grid.SelectRowBlock(firstRow, entries.Items.Count);
}
}
}
