void ImapSession::DownloadPart(const MojObject& folderId, const MojObject& emailId, const MojObject& partId, const MojRefCountedPtr<DownloadListener>& listener, Command::Priority priority) { MojRefCountedPtr<FetchPartCommand> command(new FetchPartCommand(*this, folderId, emailId, partId, priority)); // Look for an active command MojRefCountedPtr<ImapCommand> activeCommand = FindActiveCommand(command); if(activeCommand.get()) { MojLogDebug(m_log, "attaching download request to existing active command"); if(listener.get()) static_cast<FetchPartCommand*>(activeCommand.get())->AddDownloadListener(listener); return; } // Look for a pending command with equal or higher priority // TODO: requeue if a higher priority is needed MojRefCountedPtr<ImapCommand> pendingCommand = FindPendingCommand(command); if(pendingCommand.get() && pendingCommand->GetPriority() >= priority) { MojLogDebug(m_log, "attaching download request to existing pending command"); if(listener.get()) static_cast<FetchPartCommand*>(pendingCommand.get())->AddDownloadListener(listener); // Poke the queue in case it's not already running CheckQueue(); return; } // Otherwise, use the new command if(listener.get()) command->AddDownloadListener(listener); // If this is a high priority request, set m_recentUserInteraction to true if (priority >= Command::HighPriority) { m_recentUserInteraction = true; } m_commandManager->QueueCommand(command, false); CheckQueue(); }