FolderChangesManifest ISourceFolder.EnumerateChanges(EnumerateContentChangesFlags flags, int maxChanges)
{
FolderChangesManifest folderChangesManifest = new FolderChangesManifest(base.FolderId);
folderChangesManifest.ChangedMessages = new List <MessageRec>();
folderChangesManifest.ReadMessages = new List <byte[]>();
folderChangesManifest.UnreadMessages = new List <byte[]>();
if (!base.Folder.IsSelectable)
{
return(folderChangesManifest);
}
SyncContentsManifestState syncContentsManifestState = base.Mailbox.SyncState[base.FolderId];
ImapFolderState imapFolderState;
if (syncContentsManifestState.Data != null)
{
imapFolderState = ImapFolderState.Deserialize(syncContentsManifestState.Data);
if (imapFolderState.UidValidity != base.Folder.UidValidity)
{
syncContentsManifestState.Data = ImapFolderState.CreateNew(base.Folder).Serialize();
this.nextSeqNumCrawl = null;
folderChangesManifest.FolderRecoverySync = true;
return(folderChangesManifest);
}
}
else
{
imapFolderState = ImapFolderState.CreateNew(base.Folder);
}
List <MessageRec> messages = base.EnumerateMessages(FetchMessagesFlags.None, null, null);
ImapFolderState imapFolderState2 = ImapFolderState.Create(messages, imapFolderState.SeqNumCrawl, base.Folder.UidNext, base.Folder.UidValidity);
this.EnumerateIncrementalChanges(imapFolderState2, imapFolderState, folderChangesManifest, messages);
syncContentsManifestState.Data = imapFolderState2.Serialize();
return(folderChangesManifest);
}
List <MessageRec> ISourceFolder.EnumerateMessagesPaged(int maxPageSize)
{
if (!base.Folder.IsSelectable)
{
return(null);
}
SyncContentsManifestState syncContentsManifestState = base.Mailbox.SyncState[base.FolderId];
ImapFolderState imapFolderState = (syncContentsManifestState.Data != null) ? ImapFolderState.Deserialize(syncContentsManifestState.Data) : ImapFolderState.CreateNew(base.Folder);
if (this.nextSeqNumCrawl == null)
{
this.nextSeqNumCrawl = new int?((imapFolderState.SeqNumCrawl == int.MaxValue) ? (base.Folder.NumberOfMessages ?? 0) : imapFolderState.SeqNumCrawl);
}
else
{
imapFolderState.SeqNumCrawl = this.nextSeqNumCrawl.Value;
syncContentsManifestState.Data = imapFolderState.Serialize();
}
if (this.nextSeqNumCrawl == 0)
{
return(null);
}
int num = Math.Max(1, (this.nextSeqNumCrawl - maxPageSize + 1).Value);
List <MessageRec> result = base.EnumerateMessages(FetchMessagesFlags.IncludeExtendedData, new int?(this.nextSeqNumCrawl.Value), new int?(num));
this.nextSeqNumCrawl = new int?(Math.Max(0, num - 1));
return(result);
}
