Merge with 2.0-ongoing R2885.
[ardour.git] / gtk2_ardour / ardour_ui.cc
index 0e52748e5598f26925cf1077cf90522fbad1f3bd..ca77ccb90316826a36059215d92d7ae481b80647 100644 (file)
@@ -37,6 +37,7 @@
 
 #include <pbd/error.h>
 #include <pbd/misc.h>
+#include <pbd/basename.h>
 #include <pbd/compose.h>
 #include <pbd/failed_constructor.h>
 #include <pbd/enumwriter.h>
@@ -70,6 +71,7 @@
 #include <ardour/audio_track.h>
 #include <ardour/midi_track.h>
 #include <ardour/filesystem_paths.h>
+#include <ardour/filename_extensions.h>
 
 #include "actions.h"
 #include "ardour_ui.h"
@@ -123,7 +125,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
          /* big clock */
 
-         big_clock (X_("bigclock"), false, "BigClockNonRecording", false, false, true),
+         big_clock (X_("bigclock"), false, "BigClockNonRecording", true, false, true),
 
          /* transport */
 
@@ -199,7 +201,6 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
        have_disk_speed_dialog_displayed = false;
        session_loaded = false;
        last_speed_displayed = -1.0f;
-       ab_direction = true;
        
        sys::path key_bindings_file;
 
@@ -256,7 +257,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
        starting.connect (mem_fun(*this, &ARDOUR_UI::startup));
        stopping.connect (mem_fun(*this, &ARDOUR_UI::shutdown));
 
-       platform_specific ();
+       platform_setup ();
 }
 
 int
@@ -502,6 +503,7 @@ ARDOUR_UI::save_ardour_state ()
        Config->add_extra_xml (*node);
        Config->add_extra_xml (get_transport_controllable_state());
        Config->save_state();
+       ui_config->save_state ();
 
        XMLNode enode(static_cast<Stateful*>(editor)->get_state());
        XMLNode mnode(mixer->get_state());
@@ -621,9 +623,18 @@ ARDOUR_UI::startup ()
                /* Load session or start the new session dialog */
                
                if (find_session (ARDOUR_COMMAND_LINE::session_name, path, name, isnew)) {
-                       error << string_compose(_("could not load command line session \"%1\""), 
-                                               ARDOUR_COMMAND_LINE::session_name) << endmsg;
-                       return;
+                       
+                       MessageDialog msg (string_compose(_("Could not find command line session \"%1\""), 
+                                                         ARDOUR_COMMAND_LINE::session_name),
+                                          true,
+                                          Gtk::MESSAGE_ERROR,
+                                          Gtk::BUTTONS_OK);
+                       
+                       msg.set_position (Gtk::WIN_POS_MOUSE);
+                       msg.present ();
+                       msg.run ();
+                       
+                       exit (1);
                }
 
                if (!ARDOUR_COMMAND_LINE::new_session) {
@@ -631,70 +642,34 @@ ARDOUR_UI::startup ()
                        /* Supposed to be loading an existing session, but the session doesn't exist */
                        
                        if (isnew) {
-                               error << string_compose (_("\n\nNo session named \"%1\" exists.\n"
-                                                          "To create it from the command line, start ardour as \"ardour --new %1"), path) 
-                                     << endmsg;
-                               return;
+                               MessageDialog msg (string_compose (_("\n\nNo session named \"%1\" exists.\n"
+                                                                    "To create it from the command line, start ardour as:\n   ardour --new %1"), path),
+                                                  true,
+                                                  Gtk::MESSAGE_ERROR,
+                                                  Gtk::BUTTONS_OK);
+
+                               msg.set_position (Gtk::WIN_POS_MOUSE);
+                               msg.present ();
+                               msg.run ();
+
+                               exit (1);
                        }
                }
-               
-               new_session_dialog->set_session_name (name);
-               new_session_dialog->set_session_folder (Glib::path_get_basename (path));
-               _session_is_new = isnew;
        }
 
        hide_splash ();
 
        bool have_backend = EngineControl::engine_running();
-       bool need_nsd;
-       bool load_needed = false;
-
-       if (have_backend) {
-
-               /* backend audio is working */
-
-               if (ARDOUR_COMMAND_LINE::session_name.empty() || ARDOUR_COMMAND_LINE::new_session) {
-                       /* need NSD to get session name and other info */
-                       need_nsd = true;
-               } else {
-                       need_nsd = false;
-               }
-               
-       } else {
-
-               XMLNode* audio_setup = Config->extra_xml ("AudioSetup");
-               
-               if (audio_setup) {
-                       new_session_dialog->engine_control.set_state (*audio_setup);
-               }
-
-               /* no backend audio, must bring up NSD to check configuration */
-               
-               need_nsd = true;
-       }
-
-       if (need_nsd) {
-
-               if (!get_session_parameters (ARDOUR_COMMAND_LINE::session_name, have_backend, ARDOUR_COMMAND_LINE::new_session)) {
-                       return;
-               }
-
-       } else {
-
-               if (create_engine ()) {
-                       backend_audio_error (false);
-                       exit (1);
-               }
-
-               load_needed = true;
+       XMLNode* audio_setup = Config->extra_xml ("AudioSetup");
+       
+       if (audio_setup) {
+               new_session_dialog->engine_control.set_state (*audio_setup);
        }
        
-       if (load_needed) {
-               if (load_session (ARDOUR_COMMAND_LINE::session_name, name)) {
-                       return;
-               }
+       if (!get_session_parameters (ARDOUR_COMMAND_LINE::session_name, have_backend, ARDOUR_COMMAND_LINE::new_session)) {
+               return;
        }
-
+       
        show ();
 }
 
@@ -766,32 +741,39 @@ ARDOUR_UI::check_memory_locking ()
 void
 ARDOUR_UI::finish()
 {
-       if (session && session->dirty()) {
-               switch (ask_about_saving_session(_("quit"))) {
-               case -1:
-                       return;
-                       break;
-               case 1:
-                       /* use the default name */
-                       if (save_state_canfail ("")) {
-                               /* failed - don't quit */
-                               MessageDialog msg (*editor, 
-                                              _("\
+       if (session) {
+
+               if (session->transport_rolling()) {
+                       session->request_stop ();
+                       usleep (2500000);
+               }
+
+               if (session->dirty()) {
+                       switch (ask_about_saving_session(_("quit"))) {
+                       case -1:
+                               return;
+                               break;
+                       case 1:
+                               /* use the default name */
+                               if (save_state_canfail ("")) {
+                                       /* failed - don't quit */
+                                       MessageDialog msg (*editor, 
+                                                          _("\
 Ardour was unable to save your session.\n\n\
 If you still wish to quit, please use the\n\n\
 \"Just quit\" option."));
-                               msg.run ();
-                               return;
+                                       msg.run ();
+                                       return;
+                               }
+                               break;
+                       case 0:
+                               break;
                        }
-                       break;
-               case 0:
-                       break;
                }
-       }
-
-       if (session) {
+               
                session->set_deletion_in_progress ();
        }
+
        engine->stop (true);
        Config->save_state();
        ARDOUR_UI::config()->save_state();
@@ -1099,8 +1081,7 @@ ARDOUR_UI::build_session_selector ()
        recent_session_display.set_model (recent_session_model);
        recent_session_display.append_column (_("Recent Sessions"), recent_session_columns.visible_name);
        recent_session_display.set_headers_visible (false);
-       recent_session_display.get_selection()->set_mode (SELECTION_SINGLE);
-
+       recent_session_display.get_selection()->set_mode (SELECTION_BROWSE);
        recent_session_display.signal_row_activated().connect (mem_fun (*this, &ARDOUR_UI::recent_session_row_activated));
 
        scroller->add (recent_session_display);
@@ -1124,37 +1105,55 @@ ARDOUR_UI::recent_session_row_activated (const TreePath& path, TreeViewColumn* c
 void
 ARDOUR_UI::open_recent_session ()
 {
-       /* popup selector window */
+       bool can_return = (session != 0);
 
        if (session_selector_window == 0) {
                build_session_selector ();
        }
-
+       
        redisplay_recent_sessions ();
 
-       ResponseType r = (ResponseType) session_selector_window->run ();
+       while (true) {
+               
+               session_selector_window->set_position (WIN_POS_MOUSE);
 
-       session_selector_window->hide();
+               ResponseType r = (ResponseType) session_selector_window->run ();
+               
+               switch (r) {
+               case RESPONSE_ACCEPT:
+                       break;
+               default:
+                       if (can_return) {
+                               session_selector_window->hide();
+                               return;
+                       } else {
+                               exit (1);
+                       }
+               }
 
-       switch (r) {
-       case RESPONSE_ACCEPT:
-               break;
-       default:
-               return;
-       }
+               if (recent_session_display.get_selection()->count_selected_rows() == 0) {
+                       continue;
+               }
+               
+               session_selector_window->hide();
 
-       Gtk::TreeModel::iterator i = recent_session_display.get_selection()->get_selected();
+               Gtk::TreeModel::iterator i = recent_session_display.get_selection()->get_selected();
+               
+               if (i == recent_session_model->children().end()) {
+                       return;
+               }
+               
+               Glib::ustring path = (*i)[recent_session_columns.fullpath];
+               Glib::ustring state = (*i)[recent_session_columns.visible_name];
+               
+               _session_is_new = false;
+               
+               if (load_session (path, state) == 0) {
+                       break;
+               }
 
-       if (i == recent_session_model->children().end()) {
-               return;
+               can_return = false;
        }
-       
-       Glib::ustring path = (*i)[recent_session_columns.fullpath];
-       Glib::ustring state = (*i)[recent_session_columns.visible_name];
-
-       _session_is_new = false;
-
-       load_session (path, state);
 }
 
 bool
@@ -1342,7 +1341,6 @@ ARDOUR_UI::session_add_audio_route (bool track, int32_t input_channels, int32_t
        }
 
        catch (...) {
-               cerr << "About to complain about JACK\n";
                MessageDialog msg (*editor, 
                                   _("There are insufficient JACK ports available\n\
 to create a new track or bus.\n\
@@ -1458,7 +1456,7 @@ ARDOUR_UI::remove_last_capture()
 }
 
 void
-ARDOUR_UI::transport_record ()
+ARDOUR_UI::transport_record (bool roll)
 {
        if (session) {
                switch (session->record_status()) {
@@ -1469,8 +1467,18 @@ ARDOUR_UI::transport_record ()
                                return;
                        }
                        session->maybe_enable_record ();
+                       if (roll) {
+                               transport_roll ();
+                       }
                        break;
                case Session::Recording:
+                       if (roll) {
+                               session->request_stop();
+                       } else {
+                               session->disable_record (false, true);
+                       }
+                       break;
+
                case Session::Enabled:
                        session->disable_record (false, true);
                }
@@ -1745,7 +1753,7 @@ void
 ARDOUR_UI::update_clocks ()
 {
        if (!editor || !editor->dragging_playhead()) {
-               Clock (session->audible_frame(), false, editor->edit_cursor_position(false)); /* EMIT_SIGNAL */
+               Clock (session->audible_frame(), false, editor->get_preferred_edit_position()); /* EMIT_SIGNAL */
        }
 }
 
@@ -1815,6 +1823,8 @@ ARDOUR_UI::name_io_setup (AudioEngine& engine,
                          IO& io,
                          bool in)
 {
+       vector<string> connections;
+
        if (in) {
                if (io.n_inputs().n_total() == 0) {
                        buf = _("none");
@@ -1823,16 +1833,12 @@ ARDOUR_UI::name_io_setup (AudioEngine& engine,
                
                /* XXX we're not handling multiple ports yet. */
 
-               const char **connections = io.input(0)->get_connections();
-               
-               if (connections == 0 || connections[0] == '\0') {
+               if (io.input(0)->get_connections(connections) == 0) {
                        buf = _("off");
                } else {
-                       buf = connections[0];
+                       buf = connections.front();
                }
 
-               free (connections);
-
        } else {
 
                if (io.n_outputs().n_total() == 0) {
@@ -1842,15 +1848,11 @@ ARDOUR_UI::name_io_setup (AudioEngine& engine,
                
                /* XXX we're not handling multiple ports yet. */
 
-               const char **connections = io.output(0)->get_connections();
-               
-               if (connections == 0 || connections[0] == '\0') {
+               if (io.output(0)->get_connections(connections) == 0) {
                        buf = _("off");
                } else {
-                       buf = connections[0];
+                       buf = connections.front();
                }
-
-               free (connections);
        }
 }
 
@@ -1930,6 +1932,14 @@ ARDOUR_UI::primary_clock_value_changed ()
        }
 }
 
+void
+ARDOUR_UI::big_clock_value_changed ()
+{
+       if (session) {
+               session->request_locate (big_clock.current_time ());
+       }
+}
+
 void
 ARDOUR_UI::secondary_clock_value_changed ()
 {
@@ -2033,12 +2043,40 @@ ARDOUR_UI::save_template ()
        }
 }
 
+void
+ARDOUR_UI::fontconfig_dialog ()
+{
+#ifdef GTKOSX
+       /* X11 users will always have fontconfig info around, but new GTK-OSX users 
+          may not and it can take a while to build it. Warn them.
+       */
+       
+       Glib::ustring fontconfig = Glib::build_filename (Glib::get_home_dir(), ".fontconfig");
+       
+       if (!Glib::file_test (fontconfig, Glib::FILE_TEST_EXISTS|Glib::FILE_TEST_IS_DIR)) {
+               MessageDialog msg (*new_session_dialog,
+                                  _("Welcome to Ardour.\n\n"
+                                    "The program will take a bit longer to start up\n"
+                                    "while the system fonts are checked.\n\n"
+                                    "This will only be done once, and you will\n"
+                                    "not see this message again\n"),
+                                  true,
+                                  Gtk::MESSAGE_INFO,
+                                  Gtk::BUTTONS_OK);
+               msg.show_all ();
+               msg.present ();
+               msg.run ();
+       }
+#endif
+}
+
 bool
 ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_engine, bool should_be_new)
 {
-       string session_name;
-       string session_path;
-       string template_name;
+       bool existing_session = false;
+       Glib::ustring session_name;
+       Glib::ustring session_path;
+       Glib::ustring template_name;
 
        if (!loading_dialog) {
                loading_dialog = new MessageDialog (*new_session_dialog, 
@@ -2047,41 +2085,117 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                                    Gtk::MESSAGE_INFO,
                                                    Gtk::BUTTONS_NONE);
        }
-               
+
+
        int response = Gtk::RESPONSE_NONE;
 
-       new_session_dialog->set_modal(true);
-       new_session_dialog->set_name (predetermined_path);
-       new_session_dialog->reset_recent();
+       if (predetermined_path.length()) {
+               
+               /* before we start, lets see if the given path looks like
+                  an existing ardour session. if it does, skip the
+                  tabs that we don't need
+               */
+
+               if (Glib::file_test (predetermined_path, Glib::FILE_TEST_IS_DIR)) {
+                       session_path = predetermined_path;
+                       existing_session = true;
+               } else if (Glib::file_test (predetermined_path, Glib::FILE_TEST_IS_REGULAR)) {
+                       session_path = Glib::path_get_dirname (string (predetermined_path));
+                       existing_session = true;
+               } else {
+                       /* it doesn't exist, assume the best */
+                       session_path = Glib::path_get_dirname (string (predetermined_path));
+               }
+                      
+               session_name = basename_nosuffix (string (predetermined_path));
+
+               new_session_dialog->set_session_name (session_name);
+               new_session_dialog->set_session_folder (session_path);
+               new_session_dialog->set_modal (true);
+
+               if (existing_session) {
+
+                       if (session_name.length() == 0 || session_path.length() == 0) {
+                               error << string_compose (_("Ardour cannot understand \"%1\" as a session name"), predetermined_path) << endmsg;
+                               return false;
+                       }
+                       
+                       if (Glib::file_test (predetermined_path, Glib::FILE_TEST_IS_DIR)) {
+                               Glib::ustring predicted_session_file;
+                               
+                               predicted_session_file = predetermined_path;
+                               predicted_session_file += '/';
+                               predicted_session_file += session_name;
+                               predicted_session_file += ARDOUR::statefile_suffix;
+                               
+                               if (Glib::file_test (predicted_session_file, Glib::FILE_TEST_EXISTS)) {
+                                       existing_session = true;
+                               }
+                               
+                       } else if (Glib::file_test (predetermined_path, Glib::FILE_TEST_EXISTS)) {
+                               
+                               if (predetermined_path.find (ARDOUR::statefile_suffix) == predetermined_path.length() - 7) {
+                                       /* existing .ardour file */
+                                       existing_session = true;
+                               }
+                       } else {
+                               existing_session = false;
+                       }
+                       
+                       if (existing_session && have_engine) {
+                               /* lets just try to load it */
+                               
+                               loading_dialog->set_message (_("Starting audio engine"));
+                               loading_dialog->show_all ();
+                               flush_pending ();
+                               
+                               if (create_engine ()) {
+                                       backend_audio_error (!have_engine, new_session_dialog);
+                                       loading_dialog->hide ();
+                                       return false;
+                               }
+                               
+                               if (load_session (session_path, session_name) == 0) {
+                                       goto done;
+                               }
+                       }
+               }
+       }
+
+       /* loading failed, or we need the NSD for something */
+
        new_session_dialog->set_position (WIN_POS_CENTER);
        new_session_dialog->set_current_page (0);
+       new_session_dialog->set_existing_session (existing_session);
+       new_session_dialog->reset_recent();
 
        do {
                new_session_dialog->set_have_engine (have_engine);
-
-               new_session_dialog->show();
                new_session_dialog->present ();
-               response = new_session_dialog->run ();
-
+               response = new_session_dialog->run ();
+               loading_dialog->hide ();
+               
                _session_is_new = false;
+               
+               /* handle possible negative responses */
 
                if (response == Gtk::RESPONSE_CANCEL || response == Gtk::RESPONSE_DELETE_EVENT) {
-
+                       
                        if (!session) {
                                quit();
                        }
                        new_session_dialog->hide ();
                        return false;
-
+                       
                } else if (response == Gtk::RESPONSE_NONE) {
-
-                       /* Clear was pressed */
-                       new_session_dialog->reset();
-                       continue;
+                       /* "Clear" was pressed */
+                       
+                       goto try_again;
                }
 
-               /* first things first ... if we're here to help set up audio parameters
-                  this is where want to do that.
+               fontconfig_dialog();
+
+               /* if we're here to help set up audio parameters this is where want to do that.
                */
 
                if (!have_engine) {
@@ -2089,45 +2203,24 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                new_session_dialog->hide ();
                                return false;
                        } 
-               }
 
-#ifdef GTKOSX
-               /* X11 users will always have fontconfig info around, but new GTK-OSX users 
-                  may not and it can take a while to build it. Warn them.
-               */
-
-               Glib::ustring fontconfig = Glib::build_filename (Glib::get_home_dir(), ".fontconfig");
-               
-               if (!Glib::file_test (fontconfig, Glib::FILE_TEST_EXISTS|Glib::FILE_TEST_IS_DIR)) {
-                       MessageDialog msg (*new_session_dialog,
-                                          _("Welcome to Ardour.\n\n"
-                                            "The program will take a bit longer to start up\n"
-                                            "while the system fonts are checked.\n\n"
-                                            "This will only be done once, and you will\n"
-                                            "not see this message again\n"),
-                                          true,
-                                          Gtk::MESSAGE_INFO,
-                                          Gtk::BUTTONS_OK);
-                       msg.show_all ();
-                       msg.present ();
-                       msg.run ();
+                       loading_dialog->set_message (_("Starting audio engine"));
+                       loading_dialog->show_all ();
+                       flush_pending ();
                }
-#endif
-               loading_dialog->set_message (_("Starting audio engine"));
-               loading_dialog->show_all ();
-               flush_pending ();
-               
+
                if (create_engine ()) {
                        backend_audio_error (!have_engine, new_session_dialog);
                        loading_dialog->hide ();
                        flush_pending ();
                        /* audio setup page */
+                       new_session_dialog->set_existing_session (false);
                        new_session_dialog->set_current_page (2);
-                       /* try again */
                        response = Gtk::RESPONSE_NONE;
-                       continue;
+                       goto try_again;
                }
 
+               loading_dialog->hide ();
                have_engine = true;             
                        
                /* now handle possible affirmative responses */
@@ -2140,16 +2233,22 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                        
                        if (session_name.empty()) {
                                response = Gtk::RESPONSE_NONE;
-                               continue;
+                               goto try_again;
                        } 
 
                        if (session_name[0] == '/' || 
                            (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
                            (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
-                               load_session (Glib::path_get_dirname (session_name), session_name);
+                               if (load_session (Glib::path_get_dirname (session_name), session_name)) {
+                                       response = Gtk::RESPONSE_NONE;
+                                       goto try_again;
+                               }
                        } else {
                                session_path = new_session_dialog->session_folder();
-                               load_session (session_path, session_name);
+                               if (load_session (session_path, session_name)) {
+                                       response = Gtk::RESPONSE_NONE;
+                                       goto try_again;
+                               }
                        }
                        
                } else if (response == Gtk::RESPONSE_OK) {
@@ -2160,24 +2259,35 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                
                        if (session_name.empty()) {
                                response = Gtk::RESPONSE_NONE;
-                               continue;
+                               goto try_again;
                        } 
-                               
-                       switch (new_session_dialog->get_current_page()) {
-                       case 1: /* recent session selector */
-                       case 2: /* audio engine control */
+
+                       switch (new_session_dialog->which_page()) {
+                       case NewSessionDialog::OpenPage: 
+                       case NewSessionDialog::EnginePage:
 
                                if (session_name[0] == '/' || 
                                    (session_name.length() > 2 && session_name[0] == '.' && session_name[1] == '/') ||
                                    (session_name.length() > 3 && session_name[0] == '.' && session_name[1] == '.' && session_name[2] == '/')) {
-                                       load_session (Glib::path_get_dirname (session_name), session_name);
+
+                                       if (load_session (Glib::path_get_dirname (session_name), session_name)) {
+                                               response = Gtk::RESPONSE_NONE;
+                                               goto try_again;
+                                       }
+
                                } else {
                                        session_path = new_session_dialog->session_folder();
-                                       load_session (session_path, session_name);
+                                       cerr << "there\n";
+                                       if (load_session (session_path, session_name)) {
+                                               response = Gtk::RESPONSE_NONE;
+                                               goto try_again;
+                                       }
                                }
                                break;
 
-                       case 0: /* nominally the "new" session creator, but could be in use for an old session */
+                       case NewSessionDialog::NewPage: /* nominally the "new" session creator, but could be in use for an old session */
+
+                               cerr << "on page zero\n";
 
                                if (new_session_dialog->get_current_page() == 0 && ARDOUR_COMMAND_LINE::session_name.empty()) {
                                        should_be_new = true;
@@ -2197,15 +2307,19 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                        session_path = new_session_dialog->session_folder();
 
                                }
-                               
+
                                //XXX This is needed because session constructor wants a 
                                //non-existant path. hopefully this will be fixed at some point.
                                
                                session_path = Glib::build_filename (session_path, session_name);
-                               
+
                                if (!should_be_new) {
 
-                                       load_session (session_path, session_name);
+                                       if (load_session (session_path, session_name)) {
+                                               response = Gtk::RESPONSE_NONE;
+                                               goto try_again;
+                                       }
+
                                        continue; /* leaves while() loop because response != NONE */
 
                                } else if (Glib::file_test (session_path, Glib::FileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR))) {
@@ -2228,12 +2342,17 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                                new_session_dialog->hide ();
                                                goto_editor_window ();
                                                flush_pending ();
-                                               load_session (session_path, session_name);
+                                               if (load_session (session_path, session_name)) {
+                                                       response = Gtk::RESPONSE_NONE;
+                                                       goto try_again;
+                                               }
                                                goto done;
                                                break;
                                        default:
                                                response = RESPONSE_NONE;
                                                new_session_dialog->reset ();
+                                               new_session_dialog->set_existing_session (false);
+                                               loading_dialog->hide ();
                                                continue;
                                        }
                                } 
@@ -2248,7 +2367,11 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                        goto_editor_window ();
                                        flush_pending ();
 
-                                       load_session (session_path, session_name, &template_name);
+                                       if (load_session (session_path, session_name, template_name)) {
+                                               response = Gtk::RESPONSE_NONE;
+                                               goto try_again;
+                                       }
+
                          
                                } else {
 
@@ -2304,10 +2427,6 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                                nphysout = (uint32_t) new_session_dialog->output_limit_count();
                                        }
 
-                                       new_session_dialog->hide ();
-                                       goto_editor_window ();
-                                       flush_pending ();
-
                                        if (build_session (session_path,
                                                           session_name,
                                                           cchns,
@@ -2319,9 +2438,12 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                                           engine->frame_rate() * 60 * 5)) {
                                                
                                                response = Gtk::RESPONSE_NONE;
-                                               new_session_dialog->reset ();
-                                               continue;
+                                               goto try_again;
                                        }
+
+                                       new_session_dialog->hide ();
+                                       goto_editor_window ();
+                                       flush_pending ();
                                }
                                break;
 
@@ -2329,6 +2451,13 @@ ARDOUR_UI::get_session_parameters (Glib::ustring predetermined_path, bool have_e
                                break;
                        }
                }
+
+         try_again:
+               if (response == Gtk::RESPONSE_NONE) {
+                       loading_dialog->hide ();
+                       new_session_dialog->set_existing_session (false);
+                       new_session_dialog->reset ();
+               }
                
        } while (response == Gtk::RESPONSE_NONE);
 
@@ -2352,7 +2481,7 @@ ARDOUR_UI::close_session()
 }
 
 int
-ARDOUR_UI::load_session (const string & path, const string & snap_name, string* mix_template)
+ARDOUR_UI::load_session (const Glib::ustring& path, const Glib::ustring& snap_name, Glib::ustring mix_template)
 {
        Session *new_session;
        int unload_status;
@@ -2375,7 +2504,7 @@ ARDOUR_UI::load_session (const string & path, const string & snap_name, string*
 
        /* if it already exists, we must have write access */
 
-       if (::access (path.c_str(), F_OK) == 0 && ::access (path.c_str(), W_OK)) {
+       if (Glib::file_test (path.c_str(), Glib::FILE_TEST_EXISTS) && ::access (path.c_str(), W_OK)) {
                MessageDialog msg (*editor, _("You do not have write access to this session.\n"
                                              "This prevents the session from being loaded."));
                msg.run ();
@@ -2393,8 +2522,55 @@ ARDOUR_UI::load_session (const string & path, const string & snap_name, string*
                new_session = new Session (*engine, path, snap_name, mix_template);
        }
 
+       /* this one is special */
+
+       catch (AudioEngine::PortRegistrationFailure& err) {
+
+               MessageDialog msg (err.what(),
+                                  true,
+                                  Gtk::MESSAGE_INFO,
+                                  Gtk::BUTTONS_OK_CANCEL);
+               
+               msg.set_title (_("Loading Error"));
+               msg.set_secondary_text (_("Click the OK button to try again."));
+               msg.set_position (Gtk::WIN_POS_CENTER);
+               msg.present ();
+
+               int response = msg.run ();
+
+               msg.hide ();
+
+               switch (response) {
+               case RESPONSE_CANCEL:
+                       exit (1);
+               default:
+                       break;
+               }
+               goto out;
+       }
+
        catch (...) {
-               error << string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name) << endmsg;
+
+               MessageDialog msg (string_compose(_("Session \"%1 (snapshot %2)\" did not load successfully"), path, snap_name),
+                                  true,
+                                  Gtk::MESSAGE_INFO,
+                                  Gtk::BUTTONS_OK_CANCEL);
+               
+               msg.set_title (_("Loading Error"));
+               msg.set_secondary_text (_("Click the OK button to try again."));
+               msg.set_position (Gtk::WIN_POS_CENTER);
+               msg.present ();
+
+               int response = msg.run ();
+
+               msg.hide ();
+
+               switch (response) {
+               case RESPONSE_CANCEL:
+                       exit (1);
+               default:
+                       break;
+               }
                goto out;
        }
 
@@ -2410,7 +2586,6 @@ ARDOUR_UI::load_session (const string & path, const string & snap_name, string*
                session->set_clean ();
        }
 
-       editor->edit_cursor_position (true);
        enable_screen_updates ();
        flush_pending ();
        retval = 0;
@@ -2420,7 +2595,7 @@ ARDOUR_UI::load_session (const string & path, const string & snap_name, string*
 }
 
 int
-ARDOUR_UI::build_session (const string & path, const string & snap_name, 
+ARDOUR_UI::build_session (const Glib::ustring& path, const Glib::ustring& snap_name, 
                          uint32_t control_channels,
                          uint32_t master_channels, 
                          AutoConnectOption input_connect,
@@ -2875,7 +3050,9 @@ ARDOUR_UI::disk_speed_dialog_gone (int ignored_response, MessageDialog* msg)
 int
 ARDOUR_UI::pending_state_dialog ()
 {
-       ArdourDialog dialog ("pending state dialog");
+       HBox* hbox = new HBox();
+       Image* image = new Image (Stock::DIALOG_QUESTION, ICON_SIZE_DIALOG);
+       ArdourDialog dialog (_("Crash Recovery"), true);
        Label  message (_("\
 This session appears to have been in\n\
 middle of recording when ardour or\n\
@@ -2884,15 +3061,18 @@ the computer was shutdown.\n\
 Ardour can recover any captured audio for\n\
 you, or it can ignore it. Please decide\n\
 what you would like to do.\n"));
-
-       dialog.get_vbox()->pack_start (message);
-       dialog.add_button (_("Recover from crash"), RESPONSE_ACCEPT);
+       image->set_alignment(ALIGN_CENTER, ALIGN_TOP);
+       hbox->pack_start (*image, PACK_EXPAND_WIDGET, 12);
+       hbox->pack_end (message, PACK_EXPAND_PADDING, 12);
+       dialog.get_vbox()->pack_start(*hbox, PACK_EXPAND_PADDING, 6);
        dialog.add_button (_("Ignore crash data"), RESPONSE_REJECT);
-
+       dialog.add_button (_("Recover from crash"), RESPONSE_ACCEPT);
+       dialog.set_default_response (RESPONSE_ACCEPT);
        dialog.set_position (WIN_POS_CENTER);
        message.show();
-       //dialog.get_vbox()->show();
-       
+       image->show();
+       hbox->show();
+
        switch (dialog.run ()) {
        case RESPONSE_ACCEPT:
                return 1;
@@ -3009,13 +3189,13 @@ void
 ARDOUR_UI::update_transport_clocks (nframes_t pos)
 {
        if (Config->get_primary_clock_delta_edit_cursor()) {
-               primary_clock.set (pos, false, editor->edit_cursor_position(false), 'p');
+               primary_clock.set (pos, false, editor->get_preferred_edit_position(), 1);
        } else {
                primary_clock.set (pos, 0, true);
        }
 
        if (Config->get_secondary_clock_delta_edit_cursor()) {
-               secondary_clock.set (pos, false, editor->edit_cursor_position(false), 's');
+               secondary_clock.set (pos, false, editor->get_preferred_edit_position(), 2);
        } else {
                secondary_clock.set (pos);
        }
@@ -3203,41 +3383,3 @@ ARDOUR_UI::setup_profile ()
        }
 }
 
-void
-ARDOUR_UI::disable_all_plugins ()
-{
-       if (!session) {
-               return;
-       }
-
-       // session->begin_reversible_command (_("Disable all plugins"));
-
-       boost::shared_ptr<Session::RouteList> routes = session->get_routes ();
-
-       for (Session::RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
-               // XMLNode& before = (*i)->get_redirect_state ();
-               // session->add_command (new MementoCommand<Route>(**i, &before, 0));
-               (*i)->disable_plugins ();
-               // XMLNode& after = (*i)->get_redirect_state ();
-               // session->add_command (new MementoCommand<Route>(**i, 0, &after));
-                                     
-       }
-
-       // session->commit_reversible_command ();
-}
-
-void
-ARDOUR_UI::ab_all_plugins ()
-{
-       if (!session) {
-               return;
-       }
-
-       boost::shared_ptr<Session::RouteList> routes = session->get_routes ();
-
-       for (Session::RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
-               (*i)->ab_plugins (ab_direction);
-       }
-       
-       ab_direction = !ab_direction;
-}