private void UndoMerge(UndoItem undo)
{
var votes = GetVoteEntries(undo.VoteType);
votes[undo.Vote1].UnionWith(undo.Voters1);
votes[undo.Vote2].Clear();
votes[undo.Vote2].UnionWith(undo.Voters2);
}
private void UndoRemoveVoter(UndoItem undo)
{
var votes = GetVoteEntries(undo.VoteType);
foreach (var vote in undo.Votes1)
{
votes[vote].Add(undo.Voter1);
}
}
private void UndoJoin(UndoItem undo)
{
var votes = GetVoteEntries(undo.VoteType);
foreach (var vote in votes)
{
if (undo.Votes1.Contains(vote.Key))
{
vote.Value.Add(undo.Voter1);
}
else
{
vote.Value.Remove(undo.Voter1);
}
}
}
private void UndoRemoveVote(UndoItem undo)
{
var votes = GetVoteEntries(undo.VoteType);
votes[undo.Vote1].UnionWith(undo.Voters1);
}
private void PreserveRemovedVoter(Identity voter1, IEnumerable <VotePartition> voter1Votes, VoteType type)
{
var undoItem = new UndoItem(UndoItemType.RemoveVoter, type, voter1: voter1, votes1: voter1Votes);
UndoBuffer.Push(undoItem);
}
private void PreserveRemovedVote(VotePartition vote1, IEnumerable <Identity> vote1Voters, VoteType type)
{
var undoItem = new UndoItem(UndoItemType.RemoveVote, type, vote1: vote1, voters1: vote1Voters);
UndoBuffer.Push(undoItem);
}
private void PreserveJoin(Identity voter1, Identity voter2, IEnumerable <VotePartition> voter1Votes, VoteType type)
{
var undoItem = new UndoItem(UndoItemType.Join, type, voter1: voter1, voter2: voter2, votes1: voter1Votes);
UndoBuffer.Push(undoItem);
}
/// <summary>
/// Preserves the specified state prior to a vote merge, to allow undoing it.
/// </summary>
/// <param name="vote1">The vote1.</param>
/// <param name="vote2">The vote2.</param>
/// <param name="voters1">The voters1.</param>
/// <param name="voters2">The voters2.</param>
/// <param name="type">The type.</param>
private void PreserveMerge(VotePartition vote1, VotePartition vote2, IEnumerable <Identity> voters1, IEnumerable <Identity> voters2, VoteType type)
{
var undoItem = new UndoItem(UndoItemType.Merge, type, vote1: vote1, vote2: vote2, voters1: voters1, voters2: voters2);
UndoBuffer.Push(undoItem);
}