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annotate libgui/src/news-reader.cc @ 27613:deb8877f2c34

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use symbolic constants for preferences key and default values in news reader * gui-preferences-all.h: added new include file for news reader * main-window.cc: include new include file for news reader (main_window, load_and_display_community_news): use symbolic constants for news reader preferences * module.mk: added new include file for news reader * news-reader.cc: include new include file for news reader (process): use symbolic constants for news reader preferences * settings-dialog.cc (settings_dialog, write_changed_settings): use symbolic constants for news reader preferences * welcome-wizard.cc (handle_web_connect_option): use symbolic constants for news reader preferences; (setup_community_news): use default value for presetting the checkbox for internet connection
author Torsten Lilge <ttl-octave@mailbox.org>
date Sat, 02 Nov 2019 07:41:42 +0100
parents 0495b64288f7
children 45bb5bbaf291
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
27193
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1 /*
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2
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3 Copyright (C) 2013-2019 John W. Eaton
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4 Copyright (C) 2011-2019 Jacob Dawid
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5
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6 This file is part of Octave.
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7
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8 Octave is free software: you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by
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10 the Free Software Foundation, either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but
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14 WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <https://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if defined (HAVE_CONFIG_H)
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25 # include "config.h"
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26 #endif
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27
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28 #include <string>
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29
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30 #include <QDateTime>
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31 #include <QString>
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32
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33 #include "news-reader.h"
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34 #include "resource-manager.h"
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35 #include "gui-preferences-nr.h"
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36
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37 #include "url-transfer.h"
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38 #include "version.h"
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39
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40 namespace octave
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41 {
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42 void news_reader::process (void)
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43 {
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44 QString html_text;
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45
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46 if (m_connect_to_web)
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47 {
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48 // Run this part in a separate thread so Octave can continue to
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49 // run while we wait for the page to load. Then emit the signal
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50 // to display it when we have the page contents.
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51
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52 QString url = m_base_url + '/' + m_page;
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53 std::ostringstream buf;
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54 url_transfer octave_dot_org (url.toStdString (), buf);
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55
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56 if (octave_dot_org.is_valid ())
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57 {
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58 Array<std::string> param;
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59 octave_dot_org.http_get (param);
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60
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61 if (octave_dot_org.good ())
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62 html_text = QString::fromStdString (buf.str ());
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63 }
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64
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65 if (html_text.contains ("this-is-the-gnu-octave-community-news-page"))
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66 {
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67 if (m_serial >= 0)
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68 {
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69 gui_settings *settings = resource_manager::get_settings ();
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70
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71 if (settings)
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72 {
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73 settings->setValue (nr_last_time.key,
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74 QDateTime::currentDateTime ());
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75
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76 settings->sync ();
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77 }
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78
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79 QString tag ("community-news-page-serial=");
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80
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81 int b = html_text.indexOf (tag);
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82
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83 if (b)
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84 {
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85 b += tag.length ();
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86
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87 int e = html_text.indexOf ("\n", b);
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88
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89 QString tmp = html_text.mid (b, e-b);
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90
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91 int curr_page_serial = tmp.toInt ();
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92
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93 if (curr_page_serial > m_serial)
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94 {
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95 if (settings)
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96 {
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97 settings->setValue (nr_last_news.key,
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98 curr_page_serial);
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99
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100 settings->sync ();
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101 }
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102 }
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103 else
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104 return;
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105 }
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106 else
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107 return;
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108 }
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109 }
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110 else
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111 html_text = QString
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112 (tr ("<html>\n"
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113 "<body>\n"
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114 "<p>\n"
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115 "Octave's community news source seems to be unavailable.\n"
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116 "</p>\n"
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117 "<p>\n"
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118 "For the latest news, please check\n"
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119 "<a href=\"https://octave.org/community-news.html\">https://octave.org/community-news.html</a>\n"
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120 "when you have a connection to the web (link opens in an external browser).\n"
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121 "</p>\n"
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122 "<p>\n"
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123 "<small><em>&mdash; The Octave Developers, ") + OCTAVE_RELEASE_DATE + "</em></small>\n"
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124 "</p>\n"
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125 "</body>\n"
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126 "</html>\n");
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127 }
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128 else
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129 html_text = QString
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130 (tr ("<html>\n"
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131 "<body>\n"
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132 "<p>\n"
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133 "Connecting to the web to display the latest Octave Community news has been disabled.\n"
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134 "</p>\n"
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135 "<p>\n"
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136 "For the latest news, please check\n"
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137 "<a href=\"https://octave.org/community-news.html\">https://octave.org/community-news.html</a>\n"
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138 "when you have a connection to the web (link opens in an external browser)\n"
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139 "or enable web connections for news in Octave's network settings dialog.\n"
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140 "</p>\n"
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141 "<p>\n"
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142 "<small><em>&mdash; The Octave Developers, ") + OCTAVE_RELEASE_DATE + "</em></small>\n"
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143 "</p>\n"
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144 "</body>\n"
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145 "</html>\n");
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146
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147 emit display_news_signal (html_text);
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148
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149 emit finished ();
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150 }
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151 }