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annotate libgui/src/history-dockwidget.cc @ 15367:501a9cc2c68f

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maint: whitespace cleanup in GUI code
author Jordi Gutiérrez Hermoso <jordigh@octave.org>
date Wed, 12 Sep 2012 16:34:39 -0400
parents 9d0cdd49054b
children 36ececf69385
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2
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3 Copyright (C) 2011-2012 Jacob Dawid
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <QVBoxLayout>
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28
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29 #include "cmd-hist.h"
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30
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31 #include "error.h"
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32
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33 #include "history-dockwidget.h"
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34
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35 history_dock_widget::history_dock_widget (QWidget * parent)
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36 : QDockWidget (parent), octave_event_observer ()
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37 {
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38 setObjectName ("HistoryDockWidget");
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39 construct ();
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40 }
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41
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42 void
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43 history_dock_widget::event_accepted (octave_event *e)
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44 {
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45 static bool scroll_window = false;
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46
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47 if (dynamic_cast <octave_update_history_event*> (e))
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48 {
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49 // Determine the client's (our) history length and the one of the server.
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50 int clientHistoryLength = _history_model->rowCount ();
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51 int serverHistoryLength = command_history::length ();
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52
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53 // If were behind the server, iterate through all new entries and add
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54 // them to our history.
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55 if (clientHistoryLength < serverHistoryLength)
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56 {
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57 int elts_to_add = serverHistoryLength - clientHistoryLength;
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58
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59 _history_model->insertRows (clientHistoryLength, elts_to_add);
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60
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61 for (int i = clientHistoryLength; i < serverHistoryLength; i++)
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62 {
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63 std::string entry = command_history::get_entry (i);
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64
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65 _history_model->setData (_history_model->index (i),
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66 QString::fromStdString (entry));
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67 }
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68
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69 // FIXME -- does this behavior make sense? Calling
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70 // _history_list_view->scrollToBottom () here doesn't seem to
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71 // have any effect. Instead, we need to request that action
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72 // and wait until the next event occurs in which no items
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73 // are added to the history list.
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74
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75 scroll_window = true;
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76 }
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77 else if (scroll_window)
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78 {
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79 scroll_window = false;
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80
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81 _history_list_view->scrollToBottom ();
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82 }
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83 }
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84
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85 // Post a new update event in a given time. This prevents flooding the
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86 // event queue.
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87 _update_history_model_timer.start ();
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88 delete e;
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89 }
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90
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91 void
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92 history_dock_widget::event_reject (octave_event *e)
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93 {
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94 delete e;
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95 }
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96
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97 void
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98 history_dock_widget::construct ()
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99 {
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100 _history_model = new QStringListModel ();
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101 _sort_filter_proxy_model.setSourceModel (_history_model);
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102 _history_list_view = new QListView (this);
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103 _history_list_view->setModel (&_sort_filter_proxy_model);
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104 _history_list_view->setAlternatingRowColors (true);
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105 _history_list_view->setEditTriggers (QAbstractItemView::NoEditTriggers);
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106 _history_list_view->setStatusTip (tr ("Doubleclick a command to transfer it to the terminal."));
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107 _filter_line_edit = new QLineEdit (this);
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108 _filter_line_edit->setStatusTip (tr ("Enter text to filter the command history."));
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109 QVBoxLayout *layout = new QVBoxLayout ();
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110
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111 setWindowTitle (tr ("Command History"));
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112 setWidget (new QWidget ());
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113
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114 layout->addWidget (_history_list_view);
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115 layout->addWidget (_filter_line_edit);
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116 layout->setMargin (2);
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117
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118 widget ()->setLayout (layout);
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119
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120 connect (_filter_line_edit,
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121 SIGNAL (textEdited (QString)),
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122 &_sort_filter_proxy_model,
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123 SLOT (setFilterWildcard (QString)));
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124
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125 connect (_history_list_view,
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126 SIGNAL (doubleClicked (QModelIndex)),
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127 this,
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128 SLOT (handle_double_click (QModelIndex)));
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129
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130 connect (this,
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131 SIGNAL (visibilityChanged (bool)),
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132 this,
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133 SLOT (handle_visibility_changed (bool)));
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134
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135 _update_history_model_timer.setInterval (200);
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136 _update_history_model_timer.setSingleShot (true);
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137
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138 connect (&_update_history_model_timer,
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139 SIGNAL (timeout ()),
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140 this,
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141 SLOT (request_history_model_update ()));
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142
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143 _update_history_model_timer.start ();
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144
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145 setFocusProxy (_filter_line_edit);
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146 }
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147
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148 void
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149 history_dock_widget::handle_double_click (QModelIndex modelIndex)
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150 {
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151 emit command_double_clicked (modelIndex.data().toString());
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152 }
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153
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154 void
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155 history_dock_widget::handle_visibility_changed (bool visible)
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156 {
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157 if (visible)
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158 emit active_changed (true);
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159 }
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160
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161 void
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162 history_dock_widget::request_history_model_update ()
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163 {
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164 octave_link::instance ()
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165 ->post_event (new octave_update_history_event (*this));
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166 }
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167
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168 void
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169 history_dock_widget::reset_model ()
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170 {
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171 _history_model->setStringList (QStringList ());
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172 }
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173
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174 void
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175 history_dock_widget::closeEvent (QCloseEvent *event)
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176 {
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177 emit active_changed (false);
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178 QDockWidget::closeEvent (event);
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179 }