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annotate libgui/src/octave-adapter/octave-link.cc @ 15402:7f423c6111c6

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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.
author John W. Eaton <jwe@octave.org>
date Mon, 17 Sep 2012 23:07:22 -0400
parents 24b5348d38e7
children d4b6ad43bc87
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1 /*
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2
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3 Copyright (C) 2011-2012 Jacob Dawid
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4 Copyright (C) 2011-2012 John P. Swensen
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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24 #ifdef HAVE_CONFIG_H
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25 #include <config.h>
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26 #endif
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27
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28 #include "cmd-edit.h"
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29 #include "oct-env.h"
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30 #include "oct-mutex.h"
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31 #include "singleton-cleanup.h"
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32 #include "symtab.h"
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33 #include "toplev.h"
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34
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35 #include "octave-link.h"
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36
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37 static int
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38 octave_readline_hook (void)
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39 {
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40 octave_link::entered_readline_hook ();
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41 octave_link::generate_events ();
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42 octave_link::process_events ();
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43 octave_link::finished_readline_hook ();
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44
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45 return 0;
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46 }
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47
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48 static void
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49 octave_exit_hook (int)
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50 {
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51 octave_link::about_to_exit ();
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52 }
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53
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54 octave_link *octave_link::instance = 0;
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55
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56 octave_link::octave_link (void)
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57 : event_listener (0), event_queue_mutex (new octave_mutex ()),
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58 gui_event_queue (), last_cwd (), debugging (false)
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59 { }
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60
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61 void
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62 octave_link::do_launch_octave (void)
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63 {
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64 // Create both threads.
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65 main_thread = new octave_main_thread ();
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66
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67 command_editor::add_event_hook (octave_readline_hook);
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68
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69 octave_exit = octave_exit_hook;
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70
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71 // Start the first one.
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72 main_thread->start ();
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73 }
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74
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75 void
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76 octave_link::do_register_event_listener (octave_event_listener *el)
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77 {
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78 event_listener = el;
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79 }
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80
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81 void
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82 octave_link::do_generate_events (void)
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83 {
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84 std::string current_working_directory = octave_env::get_current_directory ();
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85
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86 if (current_working_directory != last_cwd)
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87 {
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88 last_cwd = current_working_directory;
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89
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90 if (event_listener)
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91 event_listener->current_directory_has_changed (last_cwd);
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92 }
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93
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94 if (debugging != Vdebugging)
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95 {
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96 debugging = Vdebugging;
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97
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98 if (event_listener)
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99 {
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100 if (debugging)
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101 event_listener->entered_debug_mode ();
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102 else
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103 event_listener->quit_debug_mode ();
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104 }
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105 }
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106 }
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107
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108 void
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109 octave_link::do_process_events (void)
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110 {
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111 event_queue_mutex->lock ();
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112
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113 gui_event_queue.run ();
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114
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115 event_queue_mutex->unlock ();
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116 }
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117
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118 void
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119 octave_link::do_about_to_exit (void)
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120 {
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121 event_queue_mutex->lock ();
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122
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123 gui_event_queue.discard ();
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124
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125 event_queue_mutex->unlock ();
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126
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127 if (event_listener)
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128 event_listener->about_to_exit ();
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129 }
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130
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131 std::string
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132 octave_link::do_last_working_directory (void)
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133 {
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134 return last_cwd;
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135 }
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136
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137 bool
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138 octave_link::instance_ok (void)
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139 {
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140 bool retval = true;
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141
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142 if (! instance)
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143 {
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144 instance = new octave_link ();
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145
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146 if (instance)
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147 singleton_cleanup_list::add (cleanup_instance);
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148 }
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149
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150 if (! instance)
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151 {
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152 ::error ("unable to create octave_link object!");
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153
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154 retval = false;
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155 }
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156
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157 return retval;
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158 }