annotate libinterp/interpfcn/octave-link.h @ 16420:81ec95768520

use octave-link instead of hook for edit function * octave-main-thread.cc (edit_hook_fcn): Delete. (octave_main_thread::run): Don't install callback function for edit function. * octave-qt-link.h, octave-qt-link.cc (octave_qt_link::do_edit_file): Pass file as string instead of octave_value_list. Return status. * interpfcn/octave-link.h, interpfcn/octave-link.cc: Move here from interp-core directory. * libinterp/interp-core/module.mk, libinterp/interpfcn/module.mk: Update file lists. * octave-link.h: Don't include oct-obj.h. (octave_link::edit_file, octave_link::do_edit_file): Return bool. * octave-link.cc (F__octave_link_edit_file__): New function. * edit.m: Call __octave_link_edit_file__ instead of __execute_edit_hook__. * __execute_edit_hook__.cc: Delete * libinterp/corefcn/module.mk (COREFCN_SRC): Remove it from the list.
author John W. Eaton <jwe@octave.org>
date Wed, 03 Apr 2013 23:16:37 -0400
parents libinterp/interp-core/octave-link.h@16bfbf9136d3
children 40d1ddca4db5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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25 #if !defined (octave_link_h)
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26 #define octave_link_h 1
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28 #include <string>
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29
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30 #include "event-queue.h"
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31 #include "octave-event-listener.h"
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32
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33 class octave_mutex;
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34
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35 // \class OctaveLink
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36 // \brief Provides threadsafe access to octave.
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37 // \author Jacob Dawid
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38 //
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39 // This class is a wrapper around octave and provides thread safety by
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40 // buffering access operations to octave and executing them in the
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41 // readline event hook, which lives in the octave thread.
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42
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43 class octave_link
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44 {
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45 protected:
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46
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47 octave_link (void);
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48
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49 public:
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50
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51 virtual ~octave_link (void) { }
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52
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53 static void register_event_listener (octave_event_listener *el)
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54 {
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55 if (instance_ok ())
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56 instance->do_register_event_listener (el);
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57 }
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58
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59 static void generate_events (void)
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60 {
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61 if (instance_ok ())
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62 instance->do_generate_events ();
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63 }
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64
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65 static void process_events (void)
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66 {
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67 if (instance_ok ())
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68 instance->do_process_events ();
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69 }
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70
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71 template <class T>
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72 static void post_event (T *obj, void (T::*method) (void))
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73 {
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74 if (instance_ok ())
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75 instance->do_post_event (obj, method);
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76 }
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77
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78 template <class T, class A>
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79 static void post_event (T *obj, void (T::*method) (A), A arg)
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80 {
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81 if (instance_ok ())
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82 instance->do_post_event (obj, method, arg);
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83 }
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84
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85 template <class T, class A>
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86 static void post_event (T *obj, void (T::*method) (const A&), const A& arg)
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87 {
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88 if (instance_ok ())
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89 instance->do_post_event (obj, method, arg);
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90 }
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91
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92 static void about_to_exit (void)
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93 {
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94 if (instance_ok ())
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95 instance->do_about_to_exit ();
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96 }
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97
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98 static void entered_readline_hook (void)
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99 {
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100 if (instance_ok ())
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101 instance->do_entered_readline_hook ();
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102 }
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103
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104 static void finished_readline_hook (void)
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105 {
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106 if (instance_ok ())
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107 instance->do_finished_readline_hook ();
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108 }
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109
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110 static std::string last_working_directory (void)
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111 {
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112 return instance_ok ()
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113 ? instance->do_last_working_directory () : std::string ();
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114 }
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115
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116 static void update_workspace (void)
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117 {
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118 if (instance_ok ())
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119 instance->do_update_workspace ();
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120 }
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121
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122 static void update_history (void)
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123 {
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124 if (instance_ok ())
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125 instance->do_update_history ();
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126 }
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127
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128 static void pre_input_event (void)
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129 {
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130 if (instance_ok ())
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131 instance->do_pre_input_event ();
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132 }
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133
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134 static void post_input_event (void)
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135 {
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136 if (instance_ok ())
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137 instance->do_post_input_event ();
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138 }
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139
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140 static void enter_debugger_event (const std::string& file, int line)
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141 {
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142 if (instance_ok ())
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143 instance->do_enter_debugger_event (file, line);
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144 }
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145
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146 static void exit_debugger_event (const std::string& file, int line)
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147 {
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148 if (instance_ok ())
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149 instance->do_exit_debugger_event (file, line);
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150 }
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151
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152 static void
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153 update_breakpoint (bool insert, const std::string& file, int line)
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154 {
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155 if (instance_ok ())
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156 instance->do_update_breakpoint (insert, file, line);
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157 }
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158
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159 static bool
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160 edit_file (const std::string& file)
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161 {
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162 return instance_ok () ? instance->do_edit_file (file) : false;
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163 }
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164
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165 static void connect (octave_link *);
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166
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167 private:
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168
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169 static octave_link *instance;
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170
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171 static void cleanup_instance (void) { delete instance; instance = 0; }
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172
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173 // No copying!
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174
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175 octave_link (const octave_link&);
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176
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177 octave_link& operator = (const octave_link&);
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178
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179 static bool instance_ok (void);
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180
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181 protected:
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182
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183 octave_event_listener *event_listener;
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184
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185 // Semaphore to lock access to the event queue.
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186 octave_mutex *event_queue_mutex;
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187
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188 // Event Queue.
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189 event_queue gui_event_queue;
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190
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191 // Stores the last known current working directory of octave.
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192 std::string last_cwd;
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193
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194 bool debugging;
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195
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196 void do_register_event_listener (octave_event_listener *oel);
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197
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198 void do_generate_events (void);
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199 void do_process_events (void);
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200
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201 template <class T>
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202 void do_post_event (T *obj, void (T::*method) (void))
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203 {
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204 gui_event_queue.add_method (obj, method);
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205 }
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206
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207 template <class T, class A>
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208 void do_post_event (T *obj, void (T::*method) (A), A arg)
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209 {
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210 gui_event_queue.add_method (obj, method, arg);
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211 }
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212
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213 template <class T, class A>
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214 void do_post_event (T *obj, void (T::*method) (const A&), const A& arg)
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215 {
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216 gui_event_queue.add_method (obj, method, arg);
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217 }
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218
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219 void do_about_to_exit (void);
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220
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221 void do_entered_readline_hook (void) { }
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222 void do_finished_readline_hook (void) { }
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223
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224 std::string do_last_working_directory (void);
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225
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226 virtual void do_update_workspace (void) = 0;
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227
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228 virtual void do_update_history (void) = 0;
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229
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230 virtual void
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231 do_insert_debugger_pointer (const std::string& file, int line) = 0;
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232
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233 virtual void
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234 do_delete_debugger_pointer (const std::string& file, int line) = 0;
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235
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236 virtual void do_pre_input_event (void) = 0;
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237 virtual void do_post_input_event (void) = 0;
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238
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239 virtual void do_enter_debugger_event (const std::string& file, int line) = 0;
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240 virtual void do_exit_debugger_event (const std::string& file, int line) = 0;
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241
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242 virtual void do_update_breakpoint (bool insert,
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243 const std::string& file, int line) = 0;
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244
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245 virtual bool do_edit_file (const std::string& file) = 0;
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246 };
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247
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248 #endif // OCTAVELINK_H