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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 (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the documentation of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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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 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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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 |
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44 #include "mainwindow.h" |
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45 |
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46 MainWindow::MainWindow() |
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47 { |
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48 QMenu *fileMenu = new QMenu(tr("&File")); |
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49 |
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50 QAction *quitAction = fileMenu->addAction(tr("E&xit")); |
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51 quitAction->setShortcut(tr("Ctrl+Q")); |
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52 |
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53 QMenu *itemsMenu = new QMenu(tr("&Items")); |
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54 |
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55 insertAction = itemsMenu->addAction(tr("&Insert Item")); |
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56 removeAction = itemsMenu->addAction(tr("&Remove Item")); |
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57 removeAction->setEnabled(false); |
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58 itemsMenu->addSeparator(); |
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59 ascendingAction = itemsMenu->addAction(tr("Sort in &Ascending Order")); |
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60 descendingAction = itemsMenu->addAction(tr("Sort in &Descending Order")); |
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61 autoSortAction = itemsMenu->addAction(tr("&Automatically Sort Items")); |
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62 autoSortAction->setCheckable(true); |
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63 itemsMenu->addSeparator(); |
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64 QAction *findItemsAction = itemsMenu->addAction(tr("&Find Items")); |
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65 findItemsAction->setShortcut(tr("Ctrl+F")); |
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66 |
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67 menuBar()->addMenu(fileMenu); |
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68 menuBar()->addMenu(itemsMenu); |
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69 |
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70 /* For convenient quoting: |
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71 //! [0] |
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72 QTreeWidget *treeWidget = new QTreeWidget(this); |
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73 //! [0] |
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74 */ |
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75 treeWidget = new QTreeWidget(this); |
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76 //! [1] |
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77 treeWidget->setColumnCount(2); |
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78 //! [1] //! [2] |
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79 QStringList headers; |
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80 headers << tr("Subject") << tr("Default"); |
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81 treeWidget->setHeaderLabels(headers); |
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82 //! [2] |
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83 |
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84 connect(quitAction, SIGNAL(triggered()), this, SLOT(close())); |
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85 connect(ascendingAction, SIGNAL(triggered()), this, SLOT(sortAscending())); |
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86 connect(autoSortAction, SIGNAL(triggered()), this, SLOT(updateSortItems())); |
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87 connect(descendingAction, SIGNAL(triggered()), this, SLOT(sortDescending())); |
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88 connect(findItemsAction, SIGNAL(triggered()), this, SLOT(findItems())); |
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89 connect(insertAction, SIGNAL(triggered()), this, SLOT(insertItem())); |
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90 connect(removeAction, SIGNAL(triggered()), this, SLOT(removeItem())); |
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91 connect(treeWidget, |
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92 SIGNAL(currentItemChanged(QTreeWidgetItem *, QTreeWidgetItem *)), |
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93 this, SLOT(updateMenus(QTreeWidgetItem *))); |
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94 |
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95 setupTreeItems(); |
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96 updateMenus(treeWidget->currentItem()); |
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97 |
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98 setCentralWidget(treeWidget); |
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99 setWindowTitle(tr("Tree Widget")); |
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100 } |
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101 |
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102 void MainWindow::setupTreeItems() |
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103 { |
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104 //! [3] |
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105 QTreeWidgetItem *cities = new QTreeWidgetItem(treeWidget); |
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106 cities->setText(0, tr("Cities")); |
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107 QTreeWidgetItem *osloItem = new QTreeWidgetItem(cities); |
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108 osloItem->setText(0, tr("Oslo")); |
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109 osloItem->setText(1, tr("Yes")); |
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110 //! [3] |
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111 |
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112 (new QTreeWidgetItem(cities))->setText(0, tr("Stockholm")); |
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113 (new QTreeWidgetItem(cities))->setText(0, tr("Helsinki")); |
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114 (new QTreeWidgetItem(cities))->setText(0, tr("Copenhagen")); |
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115 |
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116 //! [4] //! [5] |
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117 QTreeWidgetItem *planets = new QTreeWidgetItem(treeWidget, cities); |
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118 //! [4] |
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119 planets->setText(0, tr("Planets")); |
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120 //! [5] |
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121 (new QTreeWidgetItem(planets))->setText(0, tr("Mercury")); |
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122 (new QTreeWidgetItem(planets))->setText(0, tr("Venus")); |
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123 |
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124 QTreeWidgetItem *earthItem = new QTreeWidgetItem(planets); |
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125 earthItem->setText(0, tr("Earth")); |
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126 earthItem->setText(1, tr("Yes")); |
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127 |
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128 (new QTreeWidgetItem(planets))->setText(0, tr("Mars")); |
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129 (new QTreeWidgetItem(planets))->setText(0, tr("Jupiter")); |
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130 (new QTreeWidgetItem(planets))->setText(0, tr("Saturn")); |
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131 (new QTreeWidgetItem(planets))->setText(0, tr("Uranus")); |
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132 (new QTreeWidgetItem(planets))->setText(0, tr("Neptune")); |
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133 (new QTreeWidgetItem(planets))->setText(0, tr("Pluto")); |
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134 } |
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135 |
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136 void MainWindow::findItems() |
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137 { |
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138 QString itemText = QInputDialog::getText(this, tr("Find Items"), |
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139 tr("Text to find (including wildcards):")); |
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140 |
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141 if (itemText.isEmpty()) |
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142 return; |
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143 |
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144 //! [6] |
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145 QTreeWidgetItem *item; |
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146 //! [6] |
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147 foreach (item, treeWidget->selectedItems()) |
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148 treeWidget->setItemSelected(item, false); |
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149 |
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150 //! [7] |
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151 QList<QTreeWidgetItem *> found = treeWidget->findItems( |
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152 itemText, Qt::MatchWildcard); |
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153 |
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154 foreach (item, found) { |
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155 treeWidget->setItemSelected(item, true); |
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156 // Show the item->text(0) for each item. |
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157 } |
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158 //! [7] |
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159 } |
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160 |
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161 void MainWindow::insertItem() |
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162 { |
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163 QTreeWidgetItem *currentItem = treeWidget->currentItem(); |
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164 |
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165 if (!currentItem) |
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166 return; |
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167 |
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168 QString itemText = QInputDialog::getText(this, tr("Insert Item"), |
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169 tr("Input text for the new item:")); |
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170 |
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171 if (itemText.isEmpty()) |
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172 return; |
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173 |
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174 //! [8] |
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175 QTreeWidgetItem *parent = currentItem->parent(); |
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176 QTreeWidgetItem *newItem; |
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177 if (parent) |
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178 newItem = new QTreeWidgetItem(parent, treeWidget->currentItem()); |
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179 else |
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180 //! [8] //! [9] |
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181 newItem = new QTreeWidgetItem(treeWidget, treeWidget->currentItem()); |
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182 //! [9] |
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183 |
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184 newItem->setText(0, itemText); |
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185 } |
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186 |
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187 void MainWindow::removeItem() |
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188 { |
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189 QTreeWidgetItem *currentItem = treeWidget->currentItem(); |
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190 |
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191 if (!currentItem) |
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192 return; |
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193 |
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194 //! [10] |
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195 QTreeWidgetItem *parent = currentItem->parent(); |
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196 int index; |
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197 |
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198 if (parent) { |
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199 index = parent->indexOfChild(treeWidget->currentItem()); |
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200 delete parent->takeChild(index); |
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201 } else { |
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202 index = treeWidget->indexOfTopLevelItem(treeWidget->currentItem()); |
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203 delete treeWidget->takeTopLevelItem(index); |
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204 //! [10] //! [11] |
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205 } |
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206 //! [11] |
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207 } |
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208 |
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209 void MainWindow::sortAscending() |
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210 { |
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211 treeWidget->sortItems(0, Qt::AscendingOrder); |
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212 } |
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213 |
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214 void MainWindow::sortDescending() |
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215 { |
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216 treeWidget->sortItems(0, Qt::DescendingOrder); |
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217 } |
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218 |
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219 void MainWindow::updateMenus(QTreeWidgetItem *current) |
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220 { |
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221 insertAction->setEnabled(current != 0); |
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222 removeAction->setEnabled(current != 0); |
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223 } |
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224 |
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225 void MainWindow::updateSortItems() |
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226 { |
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227 ascendingAction->setEnabled(!autoSortAction->isChecked()); |
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228 descendingAction->setEnabled(!autoSortAction->isChecked()); |
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229 |
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230 treeWidget->setSortingEnabled(autoSortAction->isChecked()); |
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231 } |