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connection-establishment.cpp

/**
 * Whiteboard session manager
 * Methods for establishing connections and notifying the user of events
 *
 * Authors:
 * David Yip <yipdw@rose-hulman.edu>
 *
 * Copyright (c) 2005 Authors
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

#include "util/ucompose.hpp"
#include <glibmm/i18n.h>
#include <gtkmm/dialog.h>
#include <gtkmm/messagedialog.h>

#include "desktop.h"
#include "file.h"
#include "document.h"

#include "xml/repr.h"

#include "jabber_whiteboard/defines.h"
#include "jabber_whiteboard/typedefs.h"
#include "jabber_whiteboard/node-tracker.h"
#include "jabber_whiteboard/chat-handler.h"
#include "jabber_whiteboard/message-queue.h"
#include "jabber_whiteboard/session-manager.h"
#include "jabber_whiteboard/invitation-confirm-dialog.h"

namespace Inkscape {

namespace Whiteboard {

void
00037 SessionManager::sendRequestToUser(std::string const& recipientJID)
{
      /*
      Glib::ustring doccopy;
      if (document != NULL) {
            doccopy = *document;
      }
      */
      this->session_data->status.set(WAITING_FOR_INVITE_RESPONSE, 1);
      this->sendMessage(CONNECT_REQUEST_USER, 0, "", recipientJID.c_str(), false);
}

void
00050 SessionManager::sendRequestToChatroom(Glib::ustring const& server, Glib::ustring const& chatroom, Glib::ustring const& handle, Glib::ustring const& password)
{
      // We do not yet use the Basic MUC Protocol for connection establishment etc
      // <http://www.jabber.org/jeps/jep-0045.html>.  The protocol we use is the
      // old GroupChat system; extension to MUC is TODO
      
      // Compose room@service/nick string for "to" field
      Glib::ustring dest = String::ucompose("%1@%2/%3", chatroom, server, handle);
      LmMessage* presence_req = lm_message_new(dest.data(), LM_MESSAGE_TYPE_PRESENCE);

      // Add 'from' attribute
      LmMessageNode* preq_root = lm_message_get_node(presence_req);

      lm_message_node_set_attribute(preq_root, "from", lm_connection_get_jid(this->session_data->connection));
      
      // Add <x xmlns='http://jabber.org/protocol/muc/' />
      // (Not anymore: we don't speak it! -- yipdw)
      LmMessageNode* xmlns_node = lm_message_node_add_child(preq_root, "x", "");
      lm_message_node_set_attribute(xmlns_node, "xmlns", "http://jabber.org/protocol/muc/");
      
      // If a password was supplied, add it to xmlns_node
      if (password != NULL) {
            lm_message_node_add_child(xmlns_node, "password", password.c_str());
      }

      // Create chat message handler and node tracker
      if (!this->_myChatHandler) {
            this->_myChatHandler = new ChatMessageHandler(this);
      }

      // Flag ourselves as connecting to a chatroom (but not yet connected)
      this->session_data->status.set(CONNECTING_TO_CHAT, 1);
      // Send the message
      GError *error = NULL;
      if (!lm_connection_send(this->session_data->connection, presence_req, &error)) {
            g_error("Presence message could not be sent to %s: %s", dest.data(), error->message);
            this->session_data->status.set(CONNECTING_TO_CHAT, 0);
      }

      this->session_data->chat_handle = handle;
      this->session_data->chat_server = server;
      this->session_data->chat_name = chatroom;

      this->setRecipient(String::ucompose("%1@%2", chatroom, server).data());

      lm_message_unref(presence_req);
}

void 
00099 SessionManager::sendConnectRequestResponse(char const* recipientJID, gboolean accepted_request)
{
      if (accepted_request == TRUE) {
            this->setRecipient(recipientJID);
            this->session_data->status.set(IN_WHITEBOARD, 1);
      }

      this->sendMessage(CONNECT_REQUEST_RESPONSE_USER, accepted_request, "", recipientJID, false);
}

// When this method is invoked, it means that the user has received an invitation from another peer
// to engage in a whiteboard session (i.e. 1:1 communication).  The user may accept or reject this invitation.
void
00112 SessionManager::receiveConnectRequest(gchar const* requesterJID)
{
      int x, y;
      Gdk::ModifierType mt;
      Gdk::Display::get_default()->get_pointer(x, y, mt);

      if (mt) {
            // Attach a polling timeout
            this->_notify_incoming_request = Glib::signal_timeout().connect(sigc::bind< 0 >(sigc::mem_fun(*this, &SessionManager::_pollReceiveConnectRequest), requesterJID), 50);
            return;
      }

      if (this->session_data->status[IN_WHITEBOARD]) {
            this->sendMessage(ALREADY_IN_SESSION, 0, "", requesterJID, false);
      }

      // Check to see if the user made any modifications to this document.  If so, 
      // we want to give them the option of (1) letting us clear their document or (2)
      // opening a new, blank document for the whiteboard session.
      Glib::ustring primary = "<span weight=\"bold\" size=\"larger\">" + String::ucompose(_("<b>%1</b> has invited you to a whiteboard session."), requesterJID) + "</span>\n\n";
      Glib::ustring title = String::ucompose(_("Incoming whiteboard invitation from %1"), requesterJID);

      if (sp_document_repr_root(this->_myDoc)->attribute("sodipodi:modified") == NULL) {
            primary += String::ucompose(_("Do you wish to accept <b>%1</b>'s whiteboard session invitation?"), requesterJID);
      } else {
            primary += String::ucompose(_("Would you like to accept %1's invitation in a new document window?\nAccepting the invitation in your current window will discard unsaved changes."), requesterJID);
      }

      // Construct confirmation dialog
      InvitationConfirmDialog dialog(primary);
      
      dialog.add_button(_("Accept invitation"), ACCEPT_INVITATION);
      dialog.add_button(_("Decline invitation"), DECLINE_INVITATION);
      dialog.add_button(_("Accept invitation in new document window"), ACCEPT_INVITATION_IN_NEW_WINDOW);

      bool undecided = true;
      InvitationResponses resp = static_cast< InvitationResponses >(dialog.run());

      while(undecided) {
            if (resp == ACCEPT_INVITATION) {
                  undecided = false;
                  this->clearDocument();
            
                  // Create a receive queue for the initiator of this request
                  this->session_data->receive_queues[requesterJID] = new ReceiveMessageQueue(this);
                  
                  this->setupInkscapeInterface();
                  if (dialog.useSessionFile()) {
                        this->session_data->sessionFile = dialog.getSessionFilePath();
                        this->_tryToStartLog();
                  }
                  this->sendConnectRequestResponse(requesterJID, TRUE);

            } else if (resp == ACCEPT_INVITATION_IN_NEW_WINDOW) {
                  SPDesktop* newdesktop = sp_file_new_default();
                  if (newdesktop != NULL) {
                        undecided = false;

                        // Swap desktops around

                        // Destroy the new desktop's session manager and add this one in
                        delete newdesktop->_whiteboard_session_manager;
                        newdesktop->_whiteboard_session_manager = this;

                        // Assign a new session manager to our old desktop
                        this->_myDesktop->_whiteboard_session_manager = new SessionManager(this->_myDesktop);

                        // Reset our desktop and document pointers
                        this->setDesktop(newdesktop);

                        // Prepare document and send acceptance notification
                        this->session_data->receive_queues[requesterJID] = new ReceiveMessageQueue(this);
                        this->clearDocument();
                        this->setupInkscapeInterface();
                        if (dialog.useSessionFile()) {
                              this->session_data->sessionFile = dialog.getSessionFilePath();
                              this->_tryToStartLog();
                        }
                        this->sendConnectRequestResponse(requesterJID, TRUE);

                  } else {
                        // We could not create a new desktop; ask the user if she or he wants to 
                        // replace the current document and accept the invitation, or reject the invitation.
                        // TRANSLATORS: %1 is a userid here
                        Glib::ustring msg = "<span weight=\"bold\" size=\"larger\">" + String::ucompose(_("A new document window could not be opened for a whiteboard session with <b>%1</b>"), requesterJID) + ".</span>\n\nWould you like to accept the whiteboard connection in the active document or refuse the invitation?";
                        InvitationConfirmDialog replace_dialog(msg);
                        dialog.add_button(_("Accept invitation"), ACCEPT_INVITATION);
                        dialog.add_button(_("Decline invitation"), DECLINE_INVITATION);
                        resp = static_cast< InvitationResponses >(dialog.run());
                  }
            } else {
                  undecided = false;
                  this->sendMessage(CONNECT_REQUEST_REFUSED_BY_PEER, 0, "", requesterJID, false);
            }
      }
}

// When this method is invoked, it means that the other peer
// has accepted our request.
void
00212 SessionManager::receiveConnectRequestResponse(InvitationResponses response, std::string& sender)
{
      this->session_data->status.set(WAITING_FOR_INVITE_RESPONSE, 0);

      switch(response) {
            case ACCEPT_INVITATION:
                  {

                  // Create a receive queue for the other peer.
                  this->session_data->receive_queues[sender] = new ReceiveMessageQueue(this);
                        
                  KeyToNodeMap newids;
                  NodeToKeyMap newnodes;
                  this->_myTracker = new XMLNodeTracker(this);
                  this->setupInkscapeInterface();
                  this->_tryToStartLog();
                  this->resendDocument(this->session_data->recipient, newids, newnodes);
                  this->_myTracker->put(newids, newnodes);
//                this->_myTracker->dump();
                  this->setupCommitListener();
                  break;
                  }

            case DECLINE_INVITATION:
                  {
                  // TRANSLATORS: %1 is the peer whom refused our invitation.
                  Glib::ustring primary = String::ucompose(_("<span weight=\"bold\" size=\"larger\">The user <b>%1</b> has refused your whiteboard invitation.</span>\n\n"), sender);
                  
                  // TRANSLATORS: %1 is the peer whom refused our invitation, %2 is our Jabber identity.
                  Glib::ustring secondary = String::ucompose(_("You are still connected to a Jabber server as <b>%2</b>, and may send an invitation to <b>%1</b> again, or you may send an invitation to a different user."), sender, lm_connection_get_jid(this->session_data->connection));

                  Gtk::MessageDialog dialog(primary + secondary, true, Gtk::MESSAGE_INFO, Gtk::BUTTONS_CLOSE, false);
                  dialog.run();
                  break;

                  }

            case PEER_ALREADY_IN_SESSION:
                  {
                  // TRANSLATORS: %1 is the peer whom we tried to contact, but is already in a whiteboard session.
                  Glib::ustring primary = String::ucompose(_("<span weight=\"bold\" size=\"larger\">The user <b>%1</b> is already in a whiteboard session.</span>\n\n"), sender);

                  // TRANSLATORS: %1 is the peer whom we tried to contact, but is already in a whiteboard session.
                  Glib::ustring secondary = String::ucompose(_("You are still connected to a Jabber server as <b>%1</b>, and may send an invitation to a different user."), sender);
                  Gtk::MessageDialog dialog(primary + secondary, true, Gtk::MESSAGE_INFO, Gtk::BUTTONS_CLOSE, false);
                  dialog.run();

                  break;
                  }
            default:
                  break;
      }
}

void
00267 SessionManager::receiveConnectRequestResponseChat(gchar const* recipient)
{
      // When responding to connection request responses in chatrooms,
      // the responding user is already established in the whiteboard session.
      // Therefore we do not need to perform any setup of observers or dispatchers; the requesting user
      // will do that.

      KeyToNodeMap newids;
      NodeToKeyMap newnodes;
      this->resendDocument(recipient, newids, newnodes);
}

bool
SessionManager::_pollReceiveConnectRequest(Glib::ustring const recipientJID)
{
      int x, y;
      Gdk::ModifierType mt;
      Gdk::Display::get_default()->get_pointer(x, y, mt);

      if (mt) {
            return true;
      } else {
            this->receiveConnectRequest(recipientJID.c_str());
            return false;
      }
}

}

}

/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim: filetype=c++:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :

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