protected void OnBtnSwapRolesClicked(object sender, EventArgs e)
{
TreePath[] r = treeDebaters.Selection.GetSelectedRows();
if (r.Length != 2)
{
MiscHelpers.ShowMessage(this, "Select exactly two Debaters to swap.",
MessageType.Error);
return;
}
TreeIter iter1;
TreeIter iter2;
if (!treeDebaters.Model.GetIter(out iter1, r[0]) ||
!treeDebaters.Model.GetIter(out iter2, r[1]))
{
// this should never happen
return;
}
// get the references in the store
TreeIter storeIter1 = ConvertModelIterToStoreIter(iter1);
TreeIter storeIter2 = ConvertModelIterToStoreIter(iter2);
EditableDebater d1 = (EditableDebater)
store.GetValue(storeIter1, 0);
EditableDebater d2 = (EditableDebater)
store.GetValue(storeIter2, 0);
// swapping it in the store
Role tmp = d2.Role;
d2.Role = d1.Role;
d1.Role = tmp;
// update in existing rounds (this is ugly due to our data model)
// this resets the info about available judges...
// any other approach wouldn't be future-proof
foreach (RoundData round in Tournament.I.Rounds)
{
// clear all round results of the debaters in the store!
d1.SetRoom(round.RoundName, null);
d2.SetRoom(round.RoundName, null);
// always create new instance for each round
RoundDebater rd1 = new RoundDebater(d1);
RoundDebater rd2 = new RoundDebater(d2);
// search for d1, replace by d2 and vice versa
// this should work since d1 and d2 have already swapped roles
foreach (RoomData room in round.Rooms)
{
room.ReplaceRoomMember(rd1, RoundDebater.Dummy());
}
foreach (RoomData room in round.Rooms)
{
room.ReplaceRoomMember(rd2, rd1);
}
foreach (RoomData room in round.Rooms)
{
room.ReplaceRoomMember(RoundDebater.Dummy(), rd2);
}
// update also allArrays, the following UpdateAllArrays
// relies on at least consistent arrays
round.ReplaceInAllArrays(rd1, RoundDebater.Dummy());
round.ReplaceInAllArrays(rd2, new RoundDebater(rd1));
round.ReplaceInAllArrays(RoundDebater.Dummy(), new RoundDebater(rd2));
// since complicated things can happen above
// we make the arrays consistent by brute force
// this creates many warnings that round results are cleared,
// but the debaters are backed up in store here...complicated, as said
round.UpdateAllArrays();
}
// overwrite the changes with the changes from the store
SaveDebaters();
// and reflect the possible reset of RoundResults
ShowRanking.I.UpdateAll();
// tell the treeview to update, don't know why path and iter is necessary
store.EmitRowChanged(store.GetPath(storeIter1), storeIter1);
store.EmitRowChanged(store.GetPath(storeIter2), storeIter2);
}
