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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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4 ** Contact: Qt Software Information (qt-info@nokia.com)
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5 **
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6 ** This file is part of the examples of the Qt Toolkit.
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7 **
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8 ** $QT_BEGIN_LICENSE:LGPL$
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9 ** Commercial Usage
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10 ** Licensees holding valid Qt Commercial licenses may use this file in
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11 ** accordance with the Qt Commercial License Agreement provided with the
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12 ** Software or, alternatively, in accordance with the terms contained in
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13 ** a written agreement between you and Nokia.
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14 **
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15 ** GNU Lesser General Public License Usage
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16 ** Alternatively, this file may be used under the terms of the GNU Lesser
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17 ** General Public License version 2.1 as published by the Free Software
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18 ** Foundation and appearing in the file LICENSE.LGPL included in the
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19 ** packaging of this file. Please review the following information to
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20 ** ensure the GNU Lesser General Public License version 2.1 requirements
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21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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22 **
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23 ** In addition, as a special exception, Nokia gives you certain
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24 ** additional rights. These rights are described in the Nokia Qt LGPL
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25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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26 ** 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 are unsure which license is appropriate for your use, please
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37 ** contact the sales department at qt-sales@nokia.com.
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38 ** $QT_END_LICENSE$
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39 **
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40 ****************************************************************************/
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41 module mainwindow;
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42
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43
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44 import qt.core.QModelIndex;
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45 import qt.core.QFile;
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46 import qt.gui.QMainWindow;
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47 import qt.gui.QAction;
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48 import qt.gui.QTreeView;
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49 import qt.gui.QWidget;
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50
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51 import tango.text.convert.Format;
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52
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53 import ui_mainwindow;
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54 import mainwindow;
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55 import treemodel;
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56
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57
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58 class MainWindow : public QMainWindow
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59 {
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60
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61 mixin Ui_MainWindow;
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62
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63 public:
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64
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65 this(QWidget parent = null)
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66 {
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67 super(parent);
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68 setupUi(this);
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69
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70 string[] headers;
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71 headers ~= tr("Title");
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72 headers ~= tr("Description");
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73
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74 auto file = new QFile(":/default.txt");
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75 file.open(QIODevice.ReadOnly);
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76 TreeModel model = new TreeModel(headers, file.readAll().data()[0..file.size()]);
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77 file.close();
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78
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79 view.setModel(model);
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80 for (int column = 0; column < model.columnCount(); ++column)
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81 view.resizeColumnToContents(column);
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82
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83 exitAction.triggered.connect(&QApplication.quit);
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84
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85 view.selectionModel().selectionChanged.connect(&this.updateActions);
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86
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87 actionsMenu.aboutToShow.connect(&this.updateActions);
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88 insertRowAction.triggered.connect(&this.insertRow);
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89 insertColumnAction.triggered.connect(&this.insertColumn);
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90 removeRowAction.triggered.connect(&this.removeRow);
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91 removeColumnAction.triggered.connect(&this.removeColumn);
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92 insertChildAction.triggered.connect(&this.insertChild);
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93
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94 updateActions();
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95 }
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96
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97 public:
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98
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99 void updateActions()
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100 {
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101 bool hasSelection = !view.selectionModel().selection().isEmpty();
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102 removeRowAction.setEnabled(hasSelection);
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103 removeColumnAction.setEnabled(hasSelection);
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104
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105 bool hasCurrent = view.selectionModel().currentIndex().isValid();
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106 insertRowAction.setEnabled(hasCurrent);
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107 insertColumnAction.setEnabled(hasCurrent);
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108
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109 if (hasCurrent) {
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110 view.closePersistentEditor(view.selectionModel().currentIndex());
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111
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112 int row = view.selectionModel().currentIndex().row();
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113 int column = view.selectionModel().currentIndex().column();
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114 if (view.selectionModel().currentIndex().parent().isValid())
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115 statusBar().showMessage(Format(tr("Position: ({},{})"), row, column));
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116 else
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117 statusBar().showMessage(Format(tr("Position: ({},{}) in top level"), row, column));
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118 }
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119 }
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120
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121 private:
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122
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123 void insertChild()
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124 {
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125 QModelIndex index = view.selectionModel().currentIndex();
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126 QAbstractItemModel model = view.model();
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127
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128 if (model.columnCount(index) == 0) {
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129 if (!model.insertColumn(0, index))
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130 return;
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131 }
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132
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133 if (!model.insertRow(0, index))
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134 return;
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135
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136 for (int column = 0; column < model.columnCount(index); ++column) {
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137 QModelIndex child = model.index(0, column, index);
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138 model.setData(child, QVariant("[No data]"), Qt.EditRole);
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139 if (!model.headerData(column, Qt.Horizontal).isValid())
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140 model.setHeaderData(column, Qt.Horizontal, QVariant("[No header]"), Qt.EditRole);
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141 }
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142
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143 view.selectionModel().setCurrentIndex(model.index(0, 0, index), QItemSelectionModel.ClearAndSelect);
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144 updateActions();
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145 }
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146
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147 bool insertColumn()
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148 {
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149 QModelIndex parent = QModelIndex(); //moved from method head
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150 QAbstractItemModel model = view.model();
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151 int column = view.selectionModel().currentIndex().column();
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152
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153 // Insert a column in the parent item.
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154 bool changed = model.insertColumn(column + 1, parent);
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155 if (changed)
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156 model.setHeaderData(column + 1, Qt.Horizontal, QVariant("[No header]"), Qt.EditRole);
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157
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158 updateActions();
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159
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160 return changed;
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161 }
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162
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163 void insertRow()
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164 {
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165 QModelIndex index = view.selectionModel().currentIndex();
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166 QAbstractItemModel model = view.model();
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167
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168 if (!model.insertRow(index.row()+1, index.parent()))
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169 return;
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170
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171 updateActions();
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172
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173 for (int column = 0; column < model.columnCount(index.parent()); ++column) {
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174 QModelIndex child = model.index(index.row()+1, column, index.parent());
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175 model.setData(child, QVariant("[No data]"), Qt.EditRole);
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176 }
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177 }
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178
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179 bool removeColumn()
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180 {
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181 QModelIndex parent = QModelIndex(); //moved from method head
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182 QAbstractItemModel model = view.model();
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183 int column = view.selectionModel().currentIndex().column();
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184
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185 // Insert columns in each child of the parent item.
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186 bool changed = model.removeColumn(column, parent);
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187
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188 if (!parent.isValid() && changed)
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189 updateActions();
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190
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191 return changed;
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192 }
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193
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194 void removeRow()
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195 {
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196 QModelIndex index = view.selectionModel().currentIndex();
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197 QAbstractItemModel model = view.model();
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198 if (model.removeRow(index.row(), index.parent()))
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199 updateActions();
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200 }
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201
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202 }
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