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annotate libgui/src/dialog.h @ 24016:e327adeae7a0

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hide mutex and wait condition data members in GUI objects * dialog.h, dialog.cc (class QUIWidgetCreator): Make mutex and waitcondition data members private. Provide lock, unlock, wait, and wake_all functions. Change all uses. * octave-qt-link.h, octave-qt-link.cc (class octave_qt_link): Likewise.
author John W. Eaton <jwe@octave.org>
date Wed, 06 Sep 2017 15:00:52 -0400
parents 5ecefb7425e3
children 194eb4bd202b
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) 2013-2017 John W. Eaton
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4 Copyright (C) 2013-2016 Daniel J. Sebald
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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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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 <http://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 (octave_dialog_h)
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25 #define octave_dialog_h 1
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27 #include <QMutex>
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28 #include <QWaitCondition>
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29 #include <QAbstractButton>
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30 #include <QList>
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31 #include <QItemSelectionModel>
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32 #include <QDialog>
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33 #include <QMessageBox>
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34 #include <QLineEdit>
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35 #include <QFileDialog>
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36
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37 // Defined for purposes of sending QList<int> as part of signal.
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38 typedef QList<int> QIntList;
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39
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40 // Defined for purposes of sending QList<float> as part of signal.
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41 typedef QList<float> QFloatList;
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43
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44 class QUIWidgetCreator : public QObject
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45 {
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46 Q_OBJECT
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47
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48 public:
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49
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50 QUIWidgetCreator (void);
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51
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52 ~QUIWidgetCreator (void);
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53
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54 public:
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56 void signal_dialog (const QString& message, const QString& title,
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57 const QString& icon, const QStringList& button,
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58 const QString& defbutton, const QStringList& role)
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59 {
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60
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61 // Use the last button in the list as the reject result, i.e., when no
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62 // button is pressed such as in the case of the upper right close tab.
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63 if (! button.isEmpty ())
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64 m_dialog_button = button.last ();
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65
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66 QString xicon = icon;
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67 if (xicon.isEmpty ())
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68 xicon = "none";
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69
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70 emit create_dialog (message, title, xicon, button, defbutton, role);
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71 };
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72
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73 int get_dialog_result (void) { return m_dialog_result; }
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74
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75 QString get_dialog_button (void) { return m_dialog_button; }
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76
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77 bool signal_listview (const QStringList& list, const QString& mode,
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78 int wd, int ht, const QList<int>& initial,
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79 const QString& name, const QStringList& prompt,
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80 const QString& ok_string, const QString& cancel_string)
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81 {
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82 if (list.isEmpty ())
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83 return false;
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84
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85 emit create_listview (list, mode, wd, ht, initial, name,
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86 prompt, ok_string, cancel_string);
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87
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88 return true;
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89 };
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90
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91 const QIntList * get_list_index (void) { return m_list_index; }
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92
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93 bool signal_inputlayout (const QStringList& prompt, const QString& title,
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94 const QFloatList& nr, const QFloatList& nc,
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95 const QStringList& defaults)
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96 {
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97 if (prompt.isEmpty ())
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98 return false;
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99
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100 emit create_inputlayout (prompt, title, nr, nc, defaults);
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101
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102 return true;
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103 };
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104
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105 const QStringList * get_string_list (void) { return m_string_list; }
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106
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107 bool signal_filedialog (const QStringList& filters, const QString& title,
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108 const QString& filename, const QString& dirname,
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109 const QString& multimode)
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110 {
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111 emit create_filedialog (filters, title, filename, dirname, multimode);
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112 return true;
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113 }
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114
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115 const QString * get_dialog_path (void) { return m_path_name; }
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116
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117 void lock (void) { m_mutex.lock (); }
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118 void wait (void) { m_waitcondition.wait (&m_mutex); }
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119 void unlock (void) { m_mutex.unlock (); }
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120 void wake_all (void) { m_waitcondition.wakeAll (); }
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121
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122 signals:
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123
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124 void create_dialog (const QString&, const QString&, const QString&,
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125 const QStringList&, const QString&, const QStringList&);
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126
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127 void create_listview (const QStringList&, const QString&, int, int,
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128 const QIntList&, const QString&, const QStringList&,
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129 const QString&, const QString&);
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130
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131 void create_inputlayout (const QStringList&, const QString&,
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132 const QFloatList&, const QFloatList&,
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133 const QStringList&);
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134
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135 void create_filedialog (const QStringList& filters, const QString& title,
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136 const QString& filename, const QString& dirname,
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137 const QString& multimode);
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138 public slots:
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139
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140 void dialog_button_clicked (QAbstractButton *button);
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141
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142 void list_select_finished (const QIntList& selected, int button_pressed);
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143
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144 void input_finished (const QStringList& input, int button_pressed);
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145
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146 void filedialog_finished (const QStringList& files, const QString& path,
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147 int filterindex);
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148
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149 private:
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150
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151 int m_dialog_result;
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152 QString m_dialog_button;
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153
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154 // The list could conceivably be big. Not sure how things are
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155 // stored internally, so keep off of the stack.
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156 QStringList *m_string_list;
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157 QIntList *m_list_index;
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158
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159 QString *m_path_name;
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160
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161 // GUI objects cannot be accessed in the non-GUI thread. However,
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162 // signals can be sent to slots across threads with proper
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163 // synchronization. Hence, the use of QWaitCondition.
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164 QMutex m_mutex;
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165 QWaitCondition m_waitcondition;
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166 };
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167
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168 extern QUIWidgetCreator uiwidget_creator;
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169
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170 class MessageDialog : public QMessageBox
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171 {
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172 Q_OBJECT
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173
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174 public:
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175
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176 explicit MessageDialog (const QString& message, const QString& title,
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177 const QString& icon, const QStringList& button,
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178 const QString& defbutton,
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179 const QStringList& role);
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180
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181 private:
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182
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183 void closeEvent (QCloseEvent *)
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184 {
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185 // Reroute the close tab to a button click so there is only a single
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186 // route to waking the wait condition.
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187 emit buttonClicked (nullptr);
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188 }
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189 };
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190
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191 class ListDialog : public QDialog
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192 {
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193 Q_OBJECT
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194
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195 QItemSelectionModel *selector;
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196
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197 public:
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198
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199 explicit ListDialog (const QStringList& list, const QString& mode,
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200 int width, int height, const QList<int>& initial,
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201 const QString& name, const QStringList& prompt,
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202 const QString& ok_string, const QString& cancel_string);
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203
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204 ~ListDialog (void);
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205
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206 signals:
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207
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208 void finish_selection (const QIntList&, int);
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209
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210 public slots:
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211
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212 void buttonOk_clicked (void);
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213
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214 void buttonCancel_clicked (void);
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215
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216 void reject (void);
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217
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218 void item_double_clicked (const QModelIndex&);
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219
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220 private:
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221
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222 QAbstractItemModel *m_model;
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223 };
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224
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225 class InputDialog : public QDialog
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226 {
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227 Q_OBJECT
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228
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229 QList<QLineEdit *> input_line;
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230
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231 public:
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232
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233 explicit InputDialog (const QStringList& prompt, const QString& title,
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234 const QFloatList& nr, const QFloatList& nc,
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235 const QStringList& defaults);
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236
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237 signals:
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238
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239 void finish_input (const QStringList&, int);
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240
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241 public slots:
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242
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243 void buttonOk_clicked (void);
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244
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245 void buttonCancel_clicked (void);
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246
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247 void reject (void);
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248 };
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249
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250 class FileDialog : public QFileDialog
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251 {
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252 Q_OBJECT
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253
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254 public:
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255
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256 explicit FileDialog (const QStringList& filters,
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257 const QString& title, const QString& filename,
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258 const QString& dirname, const QString& multimode);
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259
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260 signals:
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261
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262 void finish_input (const QStringList&, const QString&, int);
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263
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264 private slots:
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265
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266 void acceptSelection (void);
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267
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268 void rejectSelection (void);
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269 };
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270
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271 #endif