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annotate gui/src/backend/OctaveLink.cpp @ 14671:f346343654a4 gui

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Settings readline event hook and fixed race condition. * WorkspaceModel: Decoupled writing and reading the symbol table. * OctaveLink: Added timer to periodically query for symbol table changes.
author Jacob Dawid <jacob.dawid@googlemail.com>
date Tue, 22 May 2012 17:29:34 +0200
parents 7fbea449737d
children adad007cd018
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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
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20 int update_hook_impl()
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21 {
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22 OctaveLink::instance()->triggerUpdateHistoryModel();
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23 OctaveLink::instance()->triggerCacheSymbolTable();
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24 return 0;
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25 }
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26
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27 OctaveLink OctaveLink::m_singleton;
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28
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29 OctaveLink::OctaveLink ():QObject ()
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30 {
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31 m_historyModel = new QStringListModel (this);
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32 m_workspaceModel = new WorkspaceModel (this);
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33
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34 m_workspaceModel->insertTopLevelItem(0, new TreeItem ("Local"));
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35 m_workspaceModel->insertTopLevelItem(1, new TreeItem ("Global"));
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36 m_workspaceModel->insertTopLevelItem(2, new TreeItem ("Persistent"));
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37 m_workspaceModel->insertTopLevelItem(3, new TreeItem ("Hidden"));
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38
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39 _updateWorkspaceModelTimer.setInterval (1000);
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40 _updateWorkspaceModelTimer.setSingleShot (false);
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41 connect(&_updateWorkspaceModelTimer, SIGNAL (timeout ()),
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42 m_workspaceModel, SLOT (updateFromSymbolTable ()));
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43 }
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44
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45 OctaveLink::~OctaveLink ()
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46 {
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47 }
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48
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49 void
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50 OctaveLink::launchOctave ()
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51 {
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52 // Create both threads.
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53 m_octaveMainThread = new OctaveMainThread (this);
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54 command_editor::add_event_hook(update_hook_impl);
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55 // Start the first one.
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56 m_octaveMainThread->start ();
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57 _updateWorkspaceModelTimer.start ();
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58 }
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59
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60 void
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61 OctaveLink::terminateOctave ()
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62 {
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63 m_octaveMainThread->terminate ();
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64 quit_allowed = true;
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65 m_octaveMainThread->wait();
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66 }
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67
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68 void
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69 OctaveLink::triggerUpdateHistoryModel ()
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70 {
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71 // Determine the client's (our) history length and the one of the server.
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72 int clientHistoryLength = m_historyModel->rowCount ();
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73 int serverHistoryLength = command_history::length ();
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74
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75 // If were behind the server, iterate through all new entries and add them to our history.
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76 if (clientHistoryLength < serverHistoryLength)
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77 {
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78 for (int i = clientHistoryLength; i < serverHistoryLength; i++)
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79 {
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80 m_historyModel->insertRow (0);
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81 m_historyModel->setData (m_historyModel->index (0), QString (command_history::get_entry (i).c_str ()));
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82 }
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83 }
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84 }
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85
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86 void
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87 OctaveLink::triggerCacheSymbolTable ()
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88 {
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89 m_workspaceModel->cacheSymbolTable();
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90 }
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91
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92 QStringListModel *
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93 OctaveLink::historyModel ()
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94 {
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95 return m_historyModel;
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96 }
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97
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98 WorkspaceModel *
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99 OctaveLink::workspaceModel ()
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100 {
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101 return m_workspaceModel;
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102 }