Mercurial > octave-nkf

annotate gui/src/backend/OctaveLink.cpp @ 14700:7623bece76df gui

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Implemented logic for current directory bar. * MainWindow: Changed current working directory line edit to combo box. Added various signals and slots. * OctaveLink: Added signal that will be emitted whenever a current directory change occurs.
author Jacob Dawid <jacob.dawid@googlemail.com>
date Tue, 29 May 2012 19:08:05 +0200
parents 79c9a6d06590
children
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1 /* OctaveGUI - A graphical user interface for Octave
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2 * Copyright (C) 2011 John P. Swensen, Jacob Dawid (jacob.dawid@googlemail.com)
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3 *
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4 * This program is free software: you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as
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6 * published by the Free Software Foundation, either version 3 of the
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7 * License, or (at your option) any later version.
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8 *
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9 * This program is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
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13 *
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14 * You should have received a copy of the GNU General Public License
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15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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16 */
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17
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18 #include "OctaveLink.h"
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19 #include "load-path.h"
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20 #include "oct-env.h"
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21 #include <QDir>
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22 #include <QApplication>
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23
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24 int octave_readline_hook ()
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25 {
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26 OctaveLink::instance ()->triggerUpdateHistoryModel ();
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27 OctaveLink::instance ()->buildSymbolInformation ();
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28 OctaveLink::instance ()->updateCurrentWorkingDirectory ();
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29 return 0;
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30 }
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31
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32 void octave_exit_hook (int status)
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33 {
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34 Q_UNUSED (status);
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35 OctaveLink::instance ()->terminateOctave ();
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36 }
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37
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38 OctaveLink OctaveLink::m_singleton;
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39
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40 OctaveLink::OctaveLink ():QObject ()
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41 {
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42 m_historyModel = new QStringListModel (this);
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43 m_workspaceModel = new WorkspaceModel (this);
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44
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45 m_workspaceModel->insertTopLevelItem(0, new TreeItem ("Local"));
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46 m_workspaceModel->insertTopLevelItem(1, new TreeItem ("Global"));
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47 m_workspaceModel->insertTopLevelItem(2, new TreeItem ("Persistent"));
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48 m_workspaceModel->insertTopLevelItem(3, new TreeItem ("Hidden"));
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49
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50 _updateWorkspaceModelTimer.setInterval (1000);
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51 _updateWorkspaceModelTimer.setSingleShot (false);
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52 connect(&_updateWorkspaceModelTimer, SIGNAL (timeout ()),
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53 m_workspaceModel, SLOT (updateFromSymbolTable ()));
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54
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55 _symbolInformationSemaphore = new QSemaphore (1);
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56 _currentWorkingDirectory = "";
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57 }
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58
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59 OctaveLink::~OctaveLink ()
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60 {
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61 }
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62
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63 void
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64 OctaveLink::launchOctave ()
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65 {
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66 // Create both threads.
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67 m_octaveMainThread = new OctaveMainThread (this);
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68 command_editor::add_event_hook (octave_readline_hook);
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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 m_octaveMainThread->start ();
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73 _updateWorkspaceModelTimer.start ();
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74 }
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75
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76 void
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77 OctaveLink::terminateOctave ()
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78 {
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79 qApp->quit ();
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80 }
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81
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82 void
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83 OctaveLink::triggerUpdateHistoryModel ()
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84 {
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85 // Determine the client's (our) history length and the one of the server.
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86 int clientHistoryLength = m_historyModel->rowCount ();
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87 int serverHistoryLength = command_history::length ();
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88
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89 // If were behind the server, iterate through all new entries and add them to our history.
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90 if (clientHistoryLength < serverHistoryLength)
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91 {
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92 for (int i = clientHistoryLength; i < serverHistoryLength; i++)
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93 {
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94 m_historyModel->insertRow (0);
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95 m_historyModel->setData (m_historyModel->index (0), QString (command_history::get_entry (i).c_str ()));
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96 }
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97 }
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98 }
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99
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100 void
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101 OctaveLink::updateCurrentWorkingDirectory ()
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102 {
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103 QString _queriedWorkingDirectory = octave_env::get_current_directory ().c_str();
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104 if (_currentWorkingDirectory != _queriedWorkingDirectory)
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105 {
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106 _currentWorkingDirectory = _queriedWorkingDirectory;
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107 QDir::setCurrent (_currentWorkingDirectory);
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108 emit workingDirectoryChanged (_currentWorkingDirectory);
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109 }
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110 }
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111
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112 void
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113 OctaveLink::acquireSymbolInformation ()
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114 {
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115 _symbolInformationSemaphore->acquire (1);
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116 }
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117
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118 void
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119 OctaveLink::releaseSymbolInformation ()
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120 {
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121 _symbolInformationSemaphore->release (1);
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122 }
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123
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124 void
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125 OctaveLink::buildSymbolInformation ()
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126 {
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127 std::list < symbol_table::symbol_record > symbolTable = symbol_table::all_variables ();
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128
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129 acquireSymbolInformation ();
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130 _symbolInformation.clear ();
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131 for (std::list < symbol_table::symbol_record > ::iterator iterator = symbolTable.begin ();
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132 iterator != symbolTable.end (); iterator++)
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133 {
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134 SymbolInformation symbolInformation;
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135 symbolInformation.fromSymbolRecord (*iterator);
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136 _symbolInformation.push_back (symbolInformation);
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137 }
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138 releaseSymbolInformation ();
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139 }
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140
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141 const QList <SymbolInformation>&
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142 OctaveLink::symbolInformation () const
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143 {
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144 return _symbolInformation;
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145 }
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146
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147 QStringListModel *
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148 OctaveLink::historyModel ()
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149 {
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150 return m_historyModel;
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151 }
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152
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153 WorkspaceModel *
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154 OctaveLink::workspaceModel ()
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155 {
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156 return m_workspaceModel;
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157 }