refactor GUI event handling to use new event_queue class * octave-link.h, octave-link.cc (event_queue): Delete. (gui_event_queue): New event_queue variable. Change all uses of event_queue to user gui_event_queue instead. (octave_link::handle_event): Delete. (octave_link::post_event, octave_link::do_post_event): Provide methods that work directly with member functions pointers and data. * octave-event.h, octave-event.cc, octave-event-observer.h: Delete. Delete all uses. * libgui/src/module.mk (noinst_HEADERS): Delete octave-event.h and octave-event-observer.h from the list. (src_libgui_src_la_SOURCES): Delete octave-event.cc from the list. * workspace-view.h, history-dockwidget.h, main-window.h: Don't include octave-link.h. * history-dockwidget.cc (history_dock_widget::handle_event): Delete. (history_dock_widget::handle_event): New function adapted from handle_event. (history_dock_widget::request_history_model_update): Update for new event callback mechanism. * history-dockwidget.h: Update decls. * file-editor-tab.cc (file_editor_tab::handle_event): Delete. (file_editor_tab::run_file_callback, file_editor_tab::add_breakpoint_callback, file_editor_tab::remove_breakpoint_callback, file_editor_tab::remove_all_breakpoints_callback): New functions adapted from handle_event and corresponding octave_event classes. (file_editor_tab::request_add_breakpoint, file_editor_tab::request_remove_breakpoint, file_editor_tab::remove_all_breakpoints, file_editor_tab::run_file): Update for new event callback mechanism. * file-editor-tab.h: Update decls. (file_editor_tab::bp_info): New nested struct. * main-window.cc (main_window::handle_event): Delete. (main_window::save_workspace_callback, main_window::load_workspace_callback, main_window::clear_workspace_callback, main_window::clear_history_callback, main_window::change_directory_callback, main_window::debug_continue_callback, main_window::debug_step_into_callback, main_window::debug_step_over_callback, main_window::debug_step_out_callback, main_window::debug_quit_callback, main_window::exit_callback): New functions. (main_window::handle_save_workspace_request, main_window::handle_load_workspace_request, main_window::handle_clear_workspace_request, main_window::handle_clear_history_request, main_window::change_current_working_directory, main_window::set_current_working_directory, main_window::debug_continue, main_window::debug_step_into, main_window::debug_step_over, main_window::debug_step_out, main_window::debug_quit): Update for new event callback mechanism. * main-window.h: Update decls. * workspace-model.cc (workspace_model::handle_event): Delete. (workspace_model::update_workspace_callback): New function. (workspace_model::request_update_workspace): Update for new event callback mechanism. * workspace-model.h: Update decls.

--- a/libgui/src/octave-adapter/octave-link.cc	Mon Sep 17 22:38:53 2012 -0400
+++ b/libgui/src/octave-adapter/octave-link.cc	Mon Sep 17 23:07:22 2012 -0400
@@ -55,7 +55,7 @@
 
 octave_link::octave_link (void)
   : event_listener (0), event_queue_mutex (new octave_mutex ()),
-    event_queue (), last_cwd (), debugging (false)
+    gui_event_queue (), last_cwd (), debugging (false)
 { }
 
 void
@@ -110,40 +110,17 @@
 {
   event_queue_mutex->lock ();
 
-  while (event_queue.size () > 0)
-    {
-      octave_event *e = event_queue.front ();
-
-      event_queue.pop ();
-
-      bool status = e->perform ();
-
-      e->handle_event (status);
-
-      delete e;
-    }
+  gui_event_queue.run ();
 
   event_queue_mutex->unlock ();
 }
 
 void
-octave_link::do_post_event (octave_event *e)
-{
-  if (e)
-    {
-      event_queue_mutex->lock ();
-      event_queue.push (e);
-      event_queue_mutex->unlock ();
-    }
-}
-
-void
 octave_link::do_about_to_exit (void)
 {
   event_queue_mutex->lock ();
 
-  while (! event_queue.empty ())
-    event_queue.pop ();
+  gui_event_queue.discard ();
 
   event_queue_mutex->unlock ();
 
@@ -157,11 +134,6 @@
   return last_cwd;
 }
 
-void
-octave_link::handle_event (octave_event *, bool)
-{
-}
-
 bool
 octave_link::instance_ok (void)
 {