/// <summary> /// Wrapper for handling replace task, but without adding to merge records. /// </summary> /// <param name="vote">The vote being modified.</param> /// <param name="task">The new task to apply to the vote.</param> /// <returns>Returns true if the task replacement was successfully completed.</returns> private bool ReplaceTaskImplWrapper(VoteLineBlock vote, string task) { if (!VoteStorage.TryGetValue(vote, out var supporters)) { return(false); } // Incoming parameter may be an entry in storage, or a copy of a vote. // Adjust so that we're always pointing at an actual vote. // If the vote isn't found in VoteStorage, just use the one provided. vote = VoteStorage.GetVoteMatching(vote) ?? vote; // Remove the version of the vote we're starting with. VoteStorage.Remove(vote); string originalTask = vote.Task; vote.Task = task; // If there's a conflict with the newly-tasked vote, we need to merge with the existing vote. if (VoteStorage.ContainsKey(vote)) { if (VoteStorage.TryGetValue(vote, out var toSupport)) { foreach (var(supporterName, supporterVote) in supporters) { if (!toSupport.ContainsKey(supporterName)) { supporterVote.Task = task; toSupport.Add(supporterName, supporterVote); } } } else { // Undo the attempt if we couldn't get the conflicting vote data vote.Task = originalTask; VoteStorage.Add(vote, supporters); return(false); } } // If there's no conflict, update the tasks in the supporter votes and add the revised vote. else { foreach (var(_, supporterVote) in supporters) { supporterVote.Task = task; } VoteStorage.Add(vote, supporters); } return(true); }
public UndoAction(UndoActionType actionType, VoteStorage currentState, VoteLineBlock?storageVote = null) { ActionType = actionType; // Clone the current vote repository. storage = new VoteStorage(currentState); // Utilize a cloned storage vote if we need to track a changed VoteLineBlock // that had internal properties changed. Otherwise those will be propogated // to our storage collection. if (storageVote != null) { var storedVote = storageVote.Clone(); storage.TryGetValue(storageVote, out var storedVoteSupporters); storage.Remove(storageVote); storage.Add(storedVote, storedVoteSupporters); } }
private bool SplitImplWrapper(VoteLineBlock fromVote, List <VoteLineBlock> toVotes) { if (!VoteStorage.TryGetValue(fromVote, out var fromSupport)) { return(false); } foreach (var toVote in toVotes) { if (!VoteStorage.TryGetValue(toVote, out var toSupport)) { return(false); } MergeImpl(fromVote, toVote, fromSupport, toSupport); } // But we still want to remove the from vote. return(VoteStorage.Remove(fromVote)); }
/// <summary> /// The wrapper handles the process of extracting the vote support from /// the storage before passing the pieces on to the implementation. /// </summary> /// <param name="fromVote">The vote being merged.</param> /// <param name="toVote">The vote being merged into.</param> /// <returns>Returns true if there was a successful merge.</returns> private bool MergeImplWrapper(VoteLineBlock fromVote, VoteLineBlock toVote) { if (fromVote == toVote) { return(false); } if (!VoteStorage.TryGetValue(fromVote, out var fromSupport)) { return(false); } if (!VoteStorage.TryGetValue(toVote, out var toSupport)) { return(false); } // Theoretically, all the supporters in the from vote could already // be in the to vote, in which case no merging would happen. MergeImpl(fromVote, toVote, fromSupport, toSupport); // But we still want to remove the from vote. return(VoteStorage.Remove(fromVote)); }
public bool Undo(IVoteCounter voteCounter) { if (undone) { return(false); } var currentVotes = voteCounter.VoteStorage; // Remove pass - Remove all current votes or supporters that are not // in the archived version of the vote repository. HashSet <VoteLineBlock> voteRemovals = new HashSet <VoteLineBlock>(); foreach (var(currentVote, currentSupporters) in currentVotes) { if (!storage.TryGetValue(currentVote, out var storageSupporters)) { voteRemovals.Add(currentVote); } else { HashSet <Origin> voterRemovals = new HashSet <Origin>(); foreach (var(currentSupporter, _) in currentSupporters) { if (!storageSupporters.ContainsKey(currentSupporter)) { voterRemovals.Add(currentSupporter); } } foreach (var removal in voterRemovals) { currentSupporters.Remove(removal); } } } foreach (var removal in voteRemovals) { currentVotes.Remove(removal); } // Replace pass - Add all archived votes or supporters that are not // in the current version of the vote repository. foreach (var(storageVote, storageSupporters) in storage) { if (!currentVotes.TryGetValue(storageVote, out var currentSupporters)) { currentVotes.Add(storageVote, storageSupporters); } else { foreach (var(storageSupporter, storageSupporterVote) in storageSupporters) { if (!currentSupporters.ContainsKey(storageSupporter)) { currentSupporters.Add(storageSupporter, storageSupporterVote); } } } } return(undone = true); }