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annotate libinterp/interpfcn/octave-link.cc @ 16421:40d1ddca4db5

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improve use of octave_link * octave-link.h, octave-link.cc (octave_link::connect_link): Rename from octave_link::connect. Change all uses. Allow link to be disconnected. Don't add object to singleton_cleanup_list. * main-window.h, main-window.cc (main_window::_octave_qt_link): New data member. (main_window::construct): Initialize it. (main_window::~main_window): Disconnect octave_link and delete _octave_qt_link.
author John W. Eaton <jwe@octave.org>
date Wed, 03 Apr 2013 23:35:33 -0400
parents 81ec95768520
children 919796a440c6
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1 /*
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2
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3 Copyright (C) 2013 John W. Eaton
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4 Copyright (C) 2011-2012 Jacob Dawid
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5 Copyright (C) 2011-2012 John P. Swensen
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6
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7 This file is part of Octave.
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8
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9 Octave is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 3 of the License, or (at your
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12 option) any later version.
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13
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14 Octave is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with Octave; see the file COPYING. If not, see
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21 <http://www.gnu.org/licenses/>.
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22
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23 */
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24
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25 #ifdef HAVE_CONFIG_H
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26 #include <config.h>
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27 #endif
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28
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29 #include "cmd-edit.h"
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30 #include "defun.h"
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31 #include "oct-env.h"
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32 #include "oct-mutex.h"
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33 #include "singleton-cleanup.h"
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34 #include "symtab.h"
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35 #include "toplev.h"
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36
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37 #include "octave-link.h"
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38
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39 static int
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40 octave_readline_hook (void)
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41 {
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42 octave_link::entered_readline_hook ();
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43 octave_link::generate_events ();
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44 octave_link::process_events ();
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45 octave_link::finished_readline_hook ();
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46
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47 return 0;
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48 }
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49
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50 static void
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51 octave_exit_hook (int)
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52 {
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53 octave_link::about_to_exit ();
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54 }
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55
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56 octave_link *octave_link::instance = 0;
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57
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58 octave_link::octave_link (void)
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59 : event_listener (0), event_queue_mutex (new octave_mutex ()),
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60 gui_event_queue (), last_cwd (), debugging (false)
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61 {
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62 command_editor::add_event_hook (octave_readline_hook);
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63
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64 octave_exit = octave_exit_hook;
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65 }
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66
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67 // OBJ should be an object of a class that is derived from the base
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68 // class octave_link, or 0 to disconnect the link. It is the
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69 // responsibility of the caller to delete obj.
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70
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71 void
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72 octave_link::connect_link (octave_link* obj)
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73 {
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74 if (obj && instance)
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75 ::error ("octave_link is already linked!");
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76 else
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77 instance = obj;
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78 }
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79
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80 void
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81 octave_link::do_register_event_listener (octave_event_listener *el)
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82 {
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83 event_listener = el;
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84 }
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85
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86 void
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87 octave_link::do_generate_events (void)
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88 {
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89 std::string current_working_directory = octave_env::get_current_directory ();
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90
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91 if (current_working_directory != last_cwd)
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92 {
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93 last_cwd = current_working_directory;
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94
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95 if (event_listener)
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96 event_listener->current_directory_has_changed (last_cwd);
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97 }
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98
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99 if (debugging != Vdebugging)
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100 {
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101 debugging = Vdebugging;
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102
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103 if (event_listener)
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104 {
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105 if (debugging)
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106 event_listener->entered_debug_mode ();
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107 else
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108 event_listener->quit_debug_mode ();
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109 }
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110 }
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111 }
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112
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113 void
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114 octave_link::do_process_events (void)
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115 {
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116 event_queue_mutex->lock ();
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117
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118 gui_event_queue.run ();
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119
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120 event_queue_mutex->unlock ();
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121 }
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122
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123 void
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124 octave_link::do_about_to_exit (void)
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125 {
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126 event_queue_mutex->lock ();
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127
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128 gui_event_queue.discard ();
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129
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130 event_queue_mutex->unlock ();
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131
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132 if (event_listener)
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133 event_listener->about_to_exit ();
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134 }
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135
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136 std::string
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137 octave_link::do_last_working_directory (void)
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138 {
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139 return last_cwd;
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140 }
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141
15371
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142 bool
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143 octave_link::instance_ok (void)
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626a8ff2fe8c The GUI now shows performance information in the status bar of the GUI (ie. how much overhead it causes in the octave thread compares to the terminal version).
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144 {
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145 return instance != 0;
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a565c560e654 Replaced a lot of terminal interaction with events: Clearing, loading and saving workspace, running a file. Default location for saving a new file is now the current working directory. Fixed bad settings with a fresh installation of the GUI by providing a file with default settings and installing it when appropriate.
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146 }
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147
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148 DEFUN (__octave_link_edit_file__, args, ,
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149 "-*- texinfo -*-\n\
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150 @deftypefn {Built-in Function} {} __octave_link_edit_file__ (@var{file})\n\
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151 Undocumented internal function.\n\
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152 @end deftypefn")
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153 {
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154 octave_value retval;
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155
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156 if (args.length () == 1)
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157 {
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158 std::string file = args(0).string_value ();
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159
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160 if (! error_state)
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161 retval = octave_link::edit_file (file);
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162 else
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163 error ("expecting file name as argument");
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164 }
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165
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166 return retval;
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167 }