// Starts a drag operation if the mouse leaves the drag box with the button held down.
void grid_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
{
return;
}
if (!grid.DragRectangle.IsEmpty && !grid.DragRectangle.Contains(e.Location))
{
bool hitSelectedRow = grid.IsRowSelected(grid.DragRow);
// The drag data has to be computed when the mouse moves out of the drag rectangle, not on MouseDown,
// because we need to wait for the mouse down to possibly affect the selection (such as extending it
// or contracting it, which are done at MouseDown time).
var rows = new List <WordListEntry>();
if (hitSelectedRow)
{
// TODO: This won't include the row currently being edited, if one exists!
foreach (int row in SelectedEntryIndices)
{
rows.Add(source[row]);
}
}
else
{
// TODO: For now, let's not try to drag uncommitted rows.
if (grid.DragRow < 0 || grid.DragRow > source.Count)
{
return;
}
rows.Add(source[grid.DragRow]);
grid.SelectRow(grid.DragRow);
}
dragData = new WordListEntries(source, rows);
var data = dragData.MakeDataObject();
var result = grid.DoDragDrop(data, DragDropEffects.Move | DragDropEffects.Copy | DragDropEffects.Scroll);
// If we moved the items, we have to delete the original ones now.
// This doesn't exactly look great in the undo list, but it's very unlikely that
// we'll be able to tie together undo items related to multiple lists.
if (result == DragDropEffects.Move)
{
var indices = new List <int>();
foreach (var entry in dragData.Items)
{
int i = source.IndexOf(entry);
indices.Add(i);
}
source.RemoveAt(indices);
}
}
}
// Starts a drag operation if the mouse leaves the drag box with the button held down.
void grid_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
return;
if (!grid.DragRectangle.IsEmpty && !grid.DragRectangle.Contains(e.Location)) {
bool hitSelectedRow = grid.IsRowSelected(grid.DragRow);
// The drag data has to be computed when the mouse moves out of the drag rectangle, not on MouseDown,
// because we need to wait for the mouse down to possibly affect the selection (such as extending it
// or contracting it, which are done at MouseDown time).
var rows = new List<WordListEntry>();
if (hitSelectedRow) {
// TODO: This won't include the row currently being edited, if one exists!
foreach (int row in SelectedEntryIndices)
rows.Add(source[row]);
} else {
// TODO: For now, let's not try to drag uncommitted rows.
if (grid.DragRow < 0 || grid.DragRow > source.Count)
return;
rows.Add(source[grid.DragRow]);
grid.SelectRow(grid.DragRow);
}
dragData = new WordListEntries(source, rows);
var data = dragData.MakeDataObject();
var result = grid.DoDragDrop(data, DragDropEffects.Move | DragDropEffects.Copy | DragDropEffects.Scroll);
// If we moved the items, we have to delete the original ones now.
// This doesn't exactly look great in the undo list, but it's very unlikely that
// we'll be able to tie together undo items related to multiple lists.
if (result == DragDropEffects.Move) {
var indices = new List<int>();
foreach (var entry in dragData.Items) {
int i = source.IndexOf(entry);
indices.Add(i);
}
source.RemoveAt(indices);
}
}
}
