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annotate libgui/src/qt-interpreter-events.h @ 31619:ad014fc78bd6

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use individual local gui_settings objects Previously, we created a single gui_settings object (derived from QSettings) and accessed it from the resource_manager object. That design is not necessary and is not the way QSettings was designed to be used. Instead of managing a single object, we should be using individual QSettings objects where needed. Each individual QSettings object manages thread-safe access to a single global collection of settings. The Qt docs say that operations on QSettings are not thread safe, but that means that you can't create a QSettings object in one thread and use it in another without some locking. I'm not sure whether we were doing that correctly, but with this change it no longer matters. Each QSettings object does perform locking when reading or writing the underlying global data. * resource-manager.h, resource-manager.cc (resource_manager::m_settings): Delete data member. (resource_manager::get_settings): Delete. * annotation-dialog.cc, QTerminal.cc, QTerminal.h, command-widget.cc, command-widget.h, community-news.cc, dialog.cc, documentation-bookmarks.cc, documentation-bookmarks.h, documentation-dock-widget.cc, documentation-dock-widget.h, documentation.cc, documentation.h, dw-main-window.cc, dw-main-window.h, external-editor-interface.cc, files-dock-widget.cc, files-dock-widget.h, find-files-dialog.cc, history-dock-widget.cc, history-dock-widget.h, file-editor-interface.h, file-editor-tab.cc, file-editor-tab.h, file-editor.cc, file-editor.h, find-dialog.cc, octave-qscintilla.cc, main-window.cc, main-window.h, news-reader.cc, octave-dock-widget.cc, octave-dock-widget.h, qt-interpreter-events.cc, qt-interpreter-events.h, release-notes.cc, resource-manager.cc, resource-manager.h, set-path-dialog.cc, settings-dialog.cc, settings-dialog.h, shortcut-manager.cc, shortcut-manager.h, terminal-dock-widget.cc, terminal-dock-widget.h, variable-editor.cc, variable-editor.h, welcome-wizard.cc, workspace-model.cc, workspace-model.h, workspace-view.cc: Use local gui_settings objects instead of accessing a pointer to a single gui_settings object owned by the resource_manager object.
author John W. Eaton <jwe@octave.org>
date Fri, 02 Dec 2022 14:23:53 -0500
parents 9c0099048264
children 431f80aba37a
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2011-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_qt_interpreter_events_h)
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27 #define octave_qt_interpreter_events_h 1
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28
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29 #include <list>
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30 #include <string>
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31
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32 #include <QList>
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33 #include <QMutex>
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34 #include <QObject>
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35 #include <QString>
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36 #include <QWaitCondition>
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37
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38 #include "dialog.h"
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39
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40 #include "event-manager.h"
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41
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42 // Defined for purposes of sending QList<int> as part of signal.
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43 typedef QList<int> QIntList;
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44
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45 class octave_value;
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46
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47 namespace octave
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48 {
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49 class base_qobject;
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50
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51 // The functions in this class are not normally called directly, but
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52 // are invoked from the Octave interpreter thead by methods in the
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53 // event_manager class. In most cases, they should only translate
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54 // data from the types typically used in the interpreter to whatever
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55 // is required by the GUI (for example, std::string to QString) and
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56 // emit a Qt signal.
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57 //
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58 // The use of Qt signals provides a thread-safe way for the Octave
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59 // interpreter to notify the GUI of events (directory or workspace has
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60 // changed, for example) or to request that the GUI perform actions
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61 // (display a dialog, for example).
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62 //
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63 // By using this class as a wrapper around the Qt signals, we maintain
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64 // a separation between the Octave interpreter and any specific GUI
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65 // toolkit (no Qt headers are used in the Octave interpreter sources).
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66
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67 class qt_interpreter_events : public QObject, public interpreter_events
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68 {
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69 Q_OBJECT
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70
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71 public:
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72
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73 qt_interpreter_events (base_qobject& oct_qobj);
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74
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75 // No copying!
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76
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77 qt_interpreter_events (const qt_interpreter_events&) = delete;
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78
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79 qt_interpreter_events& operator = (const qt_interpreter_events&) = delete;
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80
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81 ~qt_interpreter_events (void) = default;
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82
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83 // Note: these functions currently do nothing with the old terminal
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84 // widget.
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85 void start_gui (bool gui_app = false);
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86 void close_gui (void);
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87
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88 bool have_dialogs (void) const { return true; }
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89
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90 std::list<std::string>
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91 file_dialog (const filter_list& filter, const std::string& title,
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92 const std::string& filename, const std::string& pathname,
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93 const std::string& multimode);
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94
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95 std::list<std::string>
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96 input_dialog (const std::list<std::string>& prompt,
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97 const std::string& title, const std::list<float>& nr,
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98 const std::list<float>& nc,
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99 const std::list<std::string>& defaults);
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100
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101 std::pair<std::list<int>, int>
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102 list_dialog (const std::list<std::string>& list,
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103 const std::string& mode, int width, int height,
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104 const std::list<int>& initial_value,
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105 const std::string& name,
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106 const std::list<std::string>& prompt,
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107 const std::string& ok_string,
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108 const std::string& cancel_string);
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109
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110 std::string
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111 question_dialog (const std::string& msg, const std::string& title,
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112 const std::string& btn1, const std::string& btn2,
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113 const std::string& btn3, const std::string& btndef);
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114
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115 void update_path_dialog (void);
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116
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117 void show_preferences (void);
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118
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119 void apply_preferences (void);
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120
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121 void show_terminal_window (void);
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122
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123 bool show_documentation (const std::string& file);
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124
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125 void show_file_browser (void);
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126
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127 void show_command_history (void);
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128
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129 void show_workspace (void);
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130
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131 void show_community_news (int serial);
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132 void show_release_notes (void);
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133
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134 bool edit_file (const std::string& file);
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135
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136 void edit_variable (const std::string& name, const octave_value& val);
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137
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138 bool confirm_shutdown (void);
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139
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140 bool prompt_new_edit_file (const std::string& file);
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141
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142 int debug_cd_or_addpath_error (const std::string& file,
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143 const std::string& dir,
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144 bool addpath_option);
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145
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146 uint8NDArray get_named_icon (const std::string& icon_name);
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147
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148 std::string gui_preference (const std::string& key,
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149 const std::string& value);
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150
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151 bool copy_image_to_clipboard (const std::string& file);
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152
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153 void focus_window (const std::string win_name);
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154
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155 void execute_command_in_terminal (const std::string& command);
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156
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157 void register_documentation (const std::string& file);
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158
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159 void unregister_documentation (const std::string& file);
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160
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161 // Note: this function currently does nothing with the old terminal
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162 // widget.
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163 void interpreter_output (const std::string& msg);
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164
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165 void display_exception (const execution_exception& ee, bool beep);
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166
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167 void gui_status_update (const std::string& feature, const std::string& status);
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168
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169 void update_gui_lexer (void);
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170
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171 void directory_changed (const std::string& dir);
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172
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173 void file_remove (const std::string& old_name,
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174 const std::string& new_name);
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175
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176 void file_renamed (bool load_new = true);
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177
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178 void set_workspace (bool top_level, bool debug,
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179 const symbol_info_list& syminfo,
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180 bool update_variable_editor);
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181
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182 void clear_workspace (void);
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183
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184 void update_prompt (const std::string& prompt);
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185
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186 void set_history (const string_vector& hist);
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187
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188 void append_history (const std::string& hist_entry);
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189
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190 void clear_history (void);
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191
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192 void pre_input_event (void);
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193
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194 void post_input_event (void);
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195
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196 void enter_debugger_event (const std::string& fcn_name,
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197 const std::string& fcn_file_name, int line);
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198
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199 void execute_in_debugger_event (const std::string& file, int line);
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200
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201 void exit_debugger_event (void);
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202
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203 void update_breakpoint (bool insert, const std::string& file, int line,
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204 const std::string& cond);
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205
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206 void lock (void) { m_mutex.lock (); }
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207
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208 void wait (void) { m_waitcondition.wait (&m_mutex); }
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209
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210 void unlock (void) { m_mutex.unlock (); }
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211
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212 void wake_all (void) { m_waitcondition.wakeAll (); }
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213
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214 public slots:
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215
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216 void confirm_shutdown_octave (void);
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217
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218 void get_named_icon_slot (const QString& name);
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219
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220 void gui_preference_slot (const QString& key, const QString& value);
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221
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222 signals:
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223
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224 // Note: these signals are not currently used by the old terminal widget.
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225 void start_gui_signal (bool gui_app);
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226 void close_gui_signal (void);
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227
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228 void copy_image_to_clipboard_signal (const QString& file, bool remove_file);
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229
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230 void focus_window_signal (const QString& win_name);
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231
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232 void edit_file_signal (const QString& file);
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233
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234 void directory_changed_signal (const QString& dir);
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235
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236 void update_path_dialog_signal (void);
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237
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238 void file_remove_signal (const QString& old_name, const QString& new_name);
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239
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240 void file_renamed_signal (bool load_new);
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241
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242 void execute_command_in_terminal_signal (const QString& command);
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243
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244 void set_workspace_signal (bool top_level, bool debug,
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245 const symbol_info_list& syminfo);
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246
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247 void clear_workspace_signal (void);
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248
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249 void update_prompt_signal (const QString& prompt);
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250
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251 void set_history_signal (const QStringList& hist);
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252
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253 void append_history_signal (const QString& hist_entry);
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254
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255 void clear_history_signal (void);
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256
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257 void enter_debugger_signal (void);
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258
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259 void exit_debugger_signal (void);
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260
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261 void update_breakpoint_marker_signal (bool insert, const QString& file,
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262 int line, const QString& cond);
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263
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264 void insert_debugger_pointer_signal (const QString&, int);
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265
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266 void delete_debugger_pointer_signal (const QString&, int);
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267
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268 void show_preferences_signal (void);
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269
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270 void gui_preference_signal (const QString& key, const QString& value);
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271
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272 void show_terminal_window_signal (void);
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273
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274 void show_documentation_signal (const QString& file);
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275
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276 void register_documentation_signal (const QString& file);
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277
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278 void unregister_documentation_signal (const QString& file);
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279
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280 void show_file_browser_signal (void);
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281
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282 void show_command_history_signal (void);
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283
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284 void show_workspace_signal (void);
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285
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286 void show_community_news_signal (int serial);
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287 void show_release_notes_signal (void);
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288
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289 // Note: the next two signals are currently not used by the old terminal widget.
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290 void interpreter_output_signal (const QString& msg);
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291 void new_command_line_signal (const QString& msg = QString ());
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292
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293 void gui_status_update_signal (const QString& feature, const QString& status);
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294
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295 void update_gui_lexer_signal (bool update_apis_only);
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296
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297 void edit_variable_signal (const QString& name, const octave_value& val);
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298
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299 void refresh_variable_editor_signal (void);
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300
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301 void confirm_shutdown_signal (void);
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302
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303 void get_named_icon_signal (const QString& name);
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304
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305 void settings_changed (bool);
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306
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307 void apply_new_settings (void);
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308
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309 private:
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310
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311 QString gui_preference_adjust (const QString& key, const QString& value);
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312
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313 void insert_debugger_pointer (const std::string& file, int line);
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314
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315 void delete_debugger_pointer (const std::string& file, int line);
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316
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317 base_qobject& m_octave_qobj;
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318
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319 QUIWidgetCreator m_uiwidget_creator;
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320
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321 QVariant m_result;
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322
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323 QMutex m_mutex;
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324
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325 QWaitCondition m_waitcondition;
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326 };
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327 }
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328
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329 #endif