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annotate src/folderselectdialog.cpp @ 45:213d9163dab0

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Add error handling to the folder selection dialog
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 06 May 2015 19:45:44 +0200
parents 64a51a42c01f
children 07744e276579
rev   line source
25
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1 /* Copyright (C) 2015 by ETH Zürich
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8 #include "folderselectdialog.h"
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9 #include "constants.h"
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10
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11 #include <QSortFilterProxyModel>
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12 #include <QStandardItemModel>
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13 #include <QTableView>
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14 #include <QVBoxLayout>
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15 #include <QLineEdit>
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16 #include <QLabel>
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17 #include <QApplication>
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18 #include <QStyle>
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19 #include <QFileDialog>
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20 #include <QStandardPaths>
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21 #include <QPushButton>
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22 #include <QHeaderView>
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23 #include <QDebug>
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24 #include <QSettings>
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25 #include <QStringList>
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26 #include <QStandardItem>
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27 #include <QMessageBox>
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28
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29 FolderSelectDialog::FolderSelectDialog(const QString& startFolder,
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30 const QString& folderPattern,
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31 const QString& pathLabel,
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32 QWidget * parent,
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33 Qt::WindowFlags f) :
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34 QDialog(parent, f),
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35 mCurFolder(startFolder),
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36 mFolderPattern(folderPattern),
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37 mPathLabelString(pathLabel),
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38 mPathLabel(NULL),
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39 mPathLineEdit(NULL)
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40 {
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41 mSortModel = new QSortFilterProxyModel();
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42 mModel = new QStandardItemModel();
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43 mShowPathSelection = !pathLabel.isEmpty();
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44 setupGUI();
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45 if (mShowPathSelection) {
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46 mPathLabel->setText("<b>" + pathLabel + ":</b> ");
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47 }
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48 setFolder(mCurFolder);
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49 }
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50
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51 void FolderSelectDialog::setupGUI() {
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52 QVBoxLayout *base = new QVBoxLayout;
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53 QHBoxLayout *folderChangeArea = new QHBoxLayout;
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54
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55 if (mShowPathSelection) {
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56 mPathLabel = new QLabel;
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57 folderChangeArea->addWidget(mPathLabel);
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58 base->addLayout(folderChangeArea);
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59
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60 QPushButton *folderSelect = new QPushButton();
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61 folderSelect->setToolTip(tr("Select folder"));
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62 folderSelect->setIcon(QApplication::style()->standardIcon(QStyle::SP_DirIcon));
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63 connect(folderSelect, &QPushButton::clicked, this,
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64 &FolderSelectDialog::changeFolderClicked);
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65 folderChangeArea->addWidget(folderSelect);
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66
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67 mPathLineEdit = new QLineEdit;
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68 mPathLineEdit->setClearButtonEnabled(true);
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69 connect(mPathLineEdit, &QLineEdit::textChanged, this,
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70 &FolderSelectDialog::pathLineChanged);
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71 folderChangeArea->addWidget(mPathLineEdit);
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72
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73 mGoButton = new QPushButton(tr("Go"));
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74 mGoButton->setEnabled(false);
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75 folderChangeArea->addWidget(mGoButton);
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76 connect(mGoButton, &QPushButton::clicked, this,
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77 &FolderSelectDialog::goClicked);
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78 }
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79
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80 mFilterWidget = new FilterWidget(mSortModel);
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81 base->addWidget(mFilterWidget);
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82
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83 mView = new QTableView;
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84 mView->setModel(mSortModel);
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85
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86 mView->resizeColumnsToContents();
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87 mView->setSelectionBehavior(QAbstractItemView::SelectRows);
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88 mView->setSelectionMode(QAbstractItemView::SingleSelection);
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89 mView->setSortingEnabled(true);
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90 mView->setEditTriggers(QAbstractItemView::NoEditTriggers);
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91 connect(mView->selectionModel(), &QItemSelectionModel::selectionChanged,
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92 this, &FolderSelectDialog::selectionChanged);
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93 connect(mView, &QTableView::doubleClicked, this,
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94 &FolderSelectDialog::wantToAccept);
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95
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96 base->addWidget(mView);
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97
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98 QHBoxLayout * bottomButtons = new QHBoxLayout;
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99 base->addLayout(bottomButtons);
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100
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101 mOkButton = new QPushButton(tr("Ok"));
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102 mOkButton->setEnabled(false);
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103 connect(mOkButton, &QPushButton::clicked, this,
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104 &FolderSelectDialog::wantToAccept);
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105 bottomButtons->addStretch(-1);
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106 bottomButtons->addWidget(mOkButton);
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107 setLayout(base);
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108 }
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109
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110 void FolderSelectDialog::selectionChanged (const QItemSelection& selected,
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111 const QItemSelection& deselected) {
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112 mOkButton->setEnabled(!selected.indexes().isEmpty());
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113 }
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114
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115 void FolderSelectDialog::pathLineChanged() {
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116 const QString path = mPathLineEdit->text();
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117 qDebug() << "path: " << path;
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118 if (path.isEmpty()) {
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119 mGoButton->setEnabled(false);
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120 return;
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121 }
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122 QDir dir(path);
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123 if (dir.exists()) {
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124 mGoButton->setEnabled(true);
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125 return;
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126 }
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127 mGoButton->setEnabled(false);
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128 }
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129
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130
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131 void FolderSelectDialog::goClicked() {
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132 setFolder(mPathLineEdit->text());
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133 QSettings settings;
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134 /* assuming go is only available in root folder mode */
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135 settings.setValue(ROOT_FOLDER_KEY, mPathLineEdit->text());
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136 }
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137
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138 void FolderSelectDialog::setFolder(const QString& folder) {
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139 mCurFolder = folder;
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140 if (mPathLineEdit) {
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141 mPathLineEdit->setText(mCurFolder);
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142 }
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143
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144 QStringList columns = mFolderPattern.split(PATTERN_SEPERATOR);
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145 mModel->clear();
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146 mModel->setHorizontalHeaderLabels(columns);
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147 QDir dir(folder);
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148 qDebug() << "Folder set to: " << folder;
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149 QStringList errors;
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150 foreach (const QString & subfolder, dir.entryList(QDir::Dirs |
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151 QDir::Readable |
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152 QDir::NoDotAndDotDot)) {
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153 qDebug() << "Looking at: " << subfolder;
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154 QStringList itemData = subfolder.split(PATTERN_SEPERATOR);
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155 if (itemData.size() != columns.size()) {
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156 errors << subfolder;
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157 continue;
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158 }
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159 QList<QStandardItem*> items;
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160 foreach (const QString& part, itemData) {
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161 QStandardItem * item = new QStandardItem(part);
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162 item->setData(dir.absoluteFilePath(subfolder));
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163 items.append(item);
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164 }
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165 mModel->appendRow(items);
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166 }
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167 mSortModel->setSourceModel(mModel);
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168 if (!errors.isEmpty()) {
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169 QString errMsg = tr("The following folders did not match the pattern: %1").arg(mFolderPattern);
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170 errMsg += "\n" + errors.join("\n");
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171 QMessageBox::warning(this, tr("Failed to parse some folders."), errMsg);
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172 }
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173 }
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174
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175 void FolderSelectDialog::wantToAccept() {
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176 QItemSelectionModel *selection = mView->selectionModel();
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177 QModelIndexList selected = selection->selectedIndexes();
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178 if (selected.isEmpty()) { /* Ok should not be enabled in that case */
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179 return;
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180 }
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181 const QString folder = selected[0].data(Qt::UserRole + 1).toString();
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182
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183 emit folderSelected(folder);
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184 accept();
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185 }
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186
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187 void FolderSelectDialog::changeFolderClicked()
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188 {
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189 const QString oldFolder = mCurFolder;
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190 const QString startLoc = mCurFolder.isEmpty() ?
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191 QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) :
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192 mCurFolder;
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193
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194 QString outFolder = QFileDialog::getExistingDirectory(
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195 this, tr("Select %1").arg(mPathLabelString),
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196 startLoc);
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197 if (outFolder.isEmpty()) {
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198 /* User aborted */
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199 return;
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200 }
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201 setFolder(outFolder);
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202 }
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