1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation ([email protected])
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6 | **
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7 | ** This file is part of the examples of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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15 | **
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16 | ** GNU Lesser General Public License Usage
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17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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18 | ** General Public License version 2.1 as published by the Free Software
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19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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20 | ** packaging of this file. Please review the following information to
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21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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23 | **
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24 | ** In addition, as a special exception, Nokia gives you certain additional
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25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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27 | **
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28 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at [email protected].
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38 | ** $QT_END_LICENSE$
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39 | **
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40 | ****************************************************************************/
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41 |
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42 | #include <QtGui>
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43 | #include "dirmodel.h"
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44 | #include "mainwindow.h"
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45 |
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46 | //! [0]
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47 | MainWindow::MainWindow(QWidget *parent)
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48 | : QMainWindow(parent), completer(0), lineEdit(0)
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49 | {
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50 | createMenu();
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51 |
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52 | QWidget *centralWidget = new QWidget;
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53 |
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54 | QLabel *modelLabel = new QLabel;
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55 | modelLabel->setText(tr("Model"));
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56 |
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57 | modelCombo = new QComboBox;
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58 | modelCombo->addItem(tr("QDirModel"));
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59 | modelCombo->addItem(tr("QDirModel that shows full path"));
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60 | modelCombo->addItem(tr("Country list"));
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61 | modelCombo->addItem(tr("Word list"));
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62 | modelCombo->setCurrentIndex(0);
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63 |
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64 | QLabel *modeLabel = new QLabel;
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65 | modeLabel->setText(tr("Completion Mode"));
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66 | modeCombo = new QComboBox;
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67 | modeCombo->addItem(tr("Inline"));
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68 | modeCombo->addItem(tr("Filtered Popup"));
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69 | modeCombo->addItem(tr("Unfiltered Popup"));
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70 | modeCombo->setCurrentIndex(1);
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71 |
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72 | QLabel *caseLabel = new QLabel;
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73 | caseLabel->setText(tr("Case Sensitivity"));
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74 | caseCombo = new QComboBox;
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75 | caseCombo->addItem(tr("Case Insensitive"));
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76 | caseCombo->addItem(tr("Case Sensitive"));
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77 | caseCombo->setCurrentIndex(0);
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78 | //! [0]
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79 |
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80 | //! [1]
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81 | QLabel *maxVisibleLabel = new QLabel;
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82 | maxVisibleLabel->setText(tr("Max Visible Items"));
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83 | maxVisibleSpinBox = new QSpinBox;
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84 | maxVisibleSpinBox->setRange(3,25);
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85 | maxVisibleSpinBox->setValue(10);
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86 |
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87 | wrapCheckBox = new QCheckBox;
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88 | wrapCheckBox->setText(tr("Wrap around completions"));
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89 | wrapCheckBox->setChecked(true);
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90 | //! [1]
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91 |
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92 | //! [2]
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93 | contentsLabel = new QLabel;
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94 | contentsLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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95 |
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96 | connect(modelCombo, SIGNAL(activated(int)), this, SLOT(changeModel()));
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97 | connect(modeCombo, SIGNAL(activated(int)), this, SLOT(changeMode(int)));
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98 | connect(caseCombo, SIGNAL(activated(int)), this, SLOT(changeCase(int)));
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99 | connect(maxVisibleSpinBox, SIGNAL(valueChanged(int)), this, SLOT(changeMaxVisible(int)));
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100 | //! [2]
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101 |
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102 | //! [3]
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103 | lineEdit = new QLineEdit;
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104 |
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105 | QGridLayout *layout = new QGridLayout;
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106 | layout->addWidget(modelLabel, 0, 0); layout->addWidget(modelCombo, 0, 1);
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107 | layout->addWidget(modeLabel, 1, 0); layout->addWidget(modeCombo, 1, 1);
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108 | layout->addWidget(caseLabel, 2, 0); layout->addWidget(caseCombo, 2, 1);
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109 | layout->addWidget(maxVisibleLabel, 3, 0); layout->addWidget(maxVisibleSpinBox, 3, 1);
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110 | layout->addWidget(wrapCheckBox, 4, 0);
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111 | layout->addWidget(contentsLabel, 5, 0, 1, 2);
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112 | layout->addWidget(lineEdit, 6, 0, 1, 2);
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113 | centralWidget->setLayout(layout);
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114 | setCentralWidget(centralWidget);
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115 |
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116 | changeModel();
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117 |
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118 | setWindowTitle(tr("Completer"));
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119 | lineEdit->setFocus();
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120 | }
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121 | //! [3]
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122 |
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123 | //! [4]
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124 | void MainWindow::createMenu()
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125 | {
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126 | QAction *exitAction = new QAction(tr("Exit"), this);
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127 | QAction *aboutAct = new QAction(tr("About"), this);
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128 | QAction *aboutQtAct = new QAction(tr("About Qt"), this);
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129 |
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130 | connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
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131 | connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
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132 | connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
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133 |
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134 | QMenu* fileMenu = menuBar()->addMenu(tr("File"));
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135 | fileMenu->addAction(exitAction);
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136 |
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137 | QMenu* helpMenu = menuBar()->addMenu(tr("About"));
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138 | helpMenu->addAction(aboutAct);
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139 | helpMenu->addAction(aboutQtAct);
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140 | }
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141 | //! [4]
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142 |
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143 | //! [5]
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144 | QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName)
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145 | {
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146 | QFile file(fileName);
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147 | if (!file.open(QFile::ReadOnly))
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148 | return new QStringListModel(completer);
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149 | //! [5]
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150 |
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151 | //! [6]
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152 | #ifndef QT_NO_CURSOR
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153 | QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
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154 | #endif
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155 | QStringList words;
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156 |
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157 | while (!file.atEnd()) {
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158 | QByteArray line = file.readLine();
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159 | if (!line.isEmpty())
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160 | words << line.trimmed();
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161 | }
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162 |
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163 | #ifndef QT_NO_CURSOR
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164 | QApplication::restoreOverrideCursor();
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165 | #endif
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166 | //! [6]
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167 |
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168 | //! [7]
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169 | if (!fileName.contains(QLatin1String("countries.txt")))
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170 | return new QStringListModel(words, completer);
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171 | //! [7]
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172 |
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173 | // The last two chars of the countries.txt file indicate the country
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174 | // symbol. We put that in column 2 of a standard item model
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175 | //! [8]
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176 | QStandardItemModel *m = new QStandardItemModel(words.count(), 2, completer);
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177 | //! [8] //! [9]
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178 | for (int i = 0; i < words.count(); ++i) {
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179 | QModelIndex countryIdx = m->index(i, 0);
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180 | QModelIndex symbolIdx = m->index(i, 1);
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181 | QString country = words[i].mid(0, words[i].length() - 2).trimmed();
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182 | QString symbol = words[i].right(2);
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183 | m->setData(countryIdx, country);
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184 | m->setData(symbolIdx, symbol);
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185 | }
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186 |
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187 | return m;
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188 | }
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189 | //! [9]
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190 |
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191 | //! [10]
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192 | void MainWindow::changeMode(int index)
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193 | {
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194 | QCompleter::CompletionMode mode;
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195 | if (index == 0)
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196 | mode = QCompleter::InlineCompletion;
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197 | else if (index == 1)
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198 | mode = QCompleter::PopupCompletion;
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199 | else
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200 | mode = QCompleter::UnfilteredPopupCompletion;
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201 |
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202 | completer->setCompletionMode(mode);
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203 | }
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204 | //! [10]
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205 |
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206 | void MainWindow::changeCase(int cs)
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207 | {
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208 | completer->setCaseSensitivity(cs ? Qt::CaseSensitive : Qt::CaseInsensitive);
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209 | }
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210 |
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211 | //! [11]
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212 | void MainWindow::changeModel()
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213 | {
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214 | delete completer;
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215 | completer = new QCompleter(this);
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216 | completer->setMaxVisibleItems(maxVisibleSpinBox->value());
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217 |
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218 | switch (modelCombo->currentIndex()) {
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219 | default:
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220 | case 0:
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221 | { // Unsorted QDirModel
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222 | QDirModel *dirModel = new QDirModel(completer);
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223 | completer->setModel(dirModel);
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224 | contentsLabel->setText(tr("Enter file path"));
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225 | }
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226 | break;
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227 | //! [11] //! [12]
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228 | case 1:
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229 | { // DirModel that shows full paths
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230 | DirModel *dirModel = new DirModel(completer);
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231 | completer->setModel(dirModel);
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232 | contentsLabel->setText(tr("Enter file path"));
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233 | }
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234 | break;
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235 | //! [12] //! [13]
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236 | case 2:
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237 | { // Country List
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238 | completer->setModel(modelFromFile(":/resources/countries.txt"));
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239 | QTreeView *treeView = new QTreeView;
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240 | completer->setPopup(treeView);
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241 | treeView->setRootIsDecorated(false);
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242 | treeView->header()->hide();
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243 | treeView->header()->setStretchLastSection(false);
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244 | treeView->header()->setResizeMode(0, QHeaderView::Stretch);
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245 | treeView->header()->setResizeMode(1, QHeaderView::ResizeToContents);
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246 | contentsLabel->setText(tr("Enter name of your country"));
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247 | }
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248 | break;
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249 | //! [13] //! [14]
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250 | case 3:
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251 | { // Word list
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252 | completer->setModel(modelFromFile(":/resources/wordlist.txt"));
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253 | completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);
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254 | contentsLabel->setText(tr("Enter a word"));
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255 | }
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256 | break;
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257 | }
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258 |
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259 | changeMode(modeCombo->currentIndex());
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260 | changeCase(caseCombo->currentIndex());
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261 | completer->setWrapAround(wrapCheckBox->isChecked());
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262 | lineEdit->setCompleter(completer);
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263 | connect(wrapCheckBox, SIGNAL(clicked(bool)), completer, SLOT(setWrapAround(bool)));
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264 | }
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265 | //! [14]
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266 |
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267 | //! [15]
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268 | void MainWindow::changeMaxVisible(int max)
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269 | {
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270 | completer->setMaxVisibleItems(max);
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271 | }
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272 | //! [15]
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273 |
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274 | //! [16]
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275 | void MainWindow::about()
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276 | {
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277 | QMessageBox::about(this, tr("About"), tr("This example demonstrates the "
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278 | "different features of the QCompleter class."));
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279 | }
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280 | //! [16]
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