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annotate src/folderselectdialog.cpp @ 79:ca8d3cfe8ba1 1.0.0

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Do not check path existence while typing Checking if a path exists can be expensive especially for network paths. So we only do this now once the user hits "Go"
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 16 Jun 2015 12:36:37 +0200
parents de148cd023a1
children 90c297a2a3dd
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 #ifndef Q_OS_WIN
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50 QIcon windowIcon = QIcon(":/icon-64.png");
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51 setWindowIcon(windowIcon);
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52 #endif
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53 }
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54
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55 void FolderSelectDialog::setupGUI() {
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56 QVBoxLayout *base = new QVBoxLayout;
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57 QHBoxLayout *folderChangeArea = new QHBoxLayout;
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58
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59 if (mShowPathSelection) {
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60 mPathLabel = new QLabel;
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61 folderChangeArea->addWidget(mPathLabel);
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62 base->addLayout(folderChangeArea);
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63
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64 QPushButton *folderSelect = new QPushButton();
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65 folderSelect->setToolTip(tr("Select folder"));
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66 folderSelect->setIcon(QApplication::style()->standardIcon(QStyle::SP_DirIcon));
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67 connect(folderSelect, &QPushButton::clicked, this,
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68 &FolderSelectDialog::changeFolderClicked);
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69 folderChangeArea->addWidget(folderSelect);
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70
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71 mPathLineEdit = new QLineEdit;
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72 mPathLineEdit->setClearButtonEnabled(true);
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73 connect(mPathLineEdit, &QLineEdit::textChanged, this,
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74 &FolderSelectDialog::pathLineChanged);
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75 folderChangeArea->addWidget(mPathLineEdit);
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76
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77 mGoButton = new QPushButton(tr("Go"));
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78 mGoButton->setEnabled(false);
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79 folderChangeArea->addWidget(mGoButton);
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80 connect(mGoButton, &QPushButton::clicked, this,
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81 &FolderSelectDialog::goClicked);
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82 connect(mPathLineEdit, &QLineEdit::returnPressed, this,
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83 &FolderSelectDialog::goClicked);
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84 }
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85
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86 mFilterWidget = new FilterWidget(mSortModel);
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87 base->addWidget(mFilterWidget);
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88
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89 mView = new QTableView;
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90 mView->setModel(mSortModel);
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91
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92 mView->resizeColumnsToContents();
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93 mView->setSelectionBehavior(QAbstractItemView::SelectRows);
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94 mView->setSelectionMode(QAbstractItemView::SingleSelection);
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95 mView->setSortingEnabled(true);
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96 mView->setEditTriggers(QAbstractItemView::NoEditTriggers);
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97 connect(mView->selectionModel(), &QItemSelectionModel::selectionChanged,
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98 this, &FolderSelectDialog::selectionChanged);
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99 connect(mView, &QTableView::doubleClicked, this,
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100 &FolderSelectDialog::wantToAccept);
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101
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102 base->addWidget(mView);
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103
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104 QHBoxLayout * bottomButtons = new QHBoxLayout;
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105 base->addLayout(bottomButtons);
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106
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107 mOkButton = new QPushButton(tr("Ok"));
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108 mOkButton->setEnabled(false);
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109 connect(mOkButton, &QPushButton::clicked, this,
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110 &FolderSelectDialog::wantToAccept);
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111 bottomButtons->addStretch(-1);
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112 bottomButtons->addWidget(mOkButton);
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113 setLayout(base);
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114 }
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115
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116 void FolderSelectDialog::selectionChanged (const QItemSelection& selected,
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117 const QItemSelection& deselected) {
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118 mOkButton->setEnabled(!selected.indexes().isEmpty());
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119 }
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120
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121 void FolderSelectDialog::pathLineChanged() {
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122 const QString path = mPathLineEdit->text();
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123 if (path.isEmpty()) {
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124 mGoButton->setEnabled(false);
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125 return;
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126 }
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127 mGoButton->setEnabled(true);
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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 const QString path = mPathLineEdit->text();
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133 QDir dir(path);
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134 if (!dir.exists()) {
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135 QMessageBox::warning(this, tr("Error!"), tr("Failed to access directory: '%1'").arg(path));
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136 mGoButton->setEnabled(false);
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137 return;
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138 }
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139 setFolder(mPathLineEdit->text());
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140 QSettings settings;
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141 /* assuming go is only available in root folder mode */
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142 settings.setValue(ROOT_FOLDER_KEY, mPathLineEdit->text());
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143 }
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144
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145 void FolderSelectDialog::setFolder(const QString& folder) {
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146 if (folder.isEmpty()) {
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147 return;
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148 }
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149 mCurFolder = folder;
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150 if (mPathLineEdit) {
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151 mPathLineEdit->setText(mCurFolder);
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152 }
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153
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154 QStringList columns = mFolderPattern.split(PATTERN_SEPERATOR);
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155 mModel->clear();
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156 mModel->setHorizontalHeaderLabels(columns);
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157 QDir dir(folder);
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158 qDebug() << "Folder set to: " << folder;
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159 QStringList errors;
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160 foreach (const QString & subfolder, dir.entryList(QDir::Dirs |
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161 QDir::Readable |
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162 QDir::NoDotAndDotDot)) {
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163 qDebug() << "Looking at: " << subfolder;
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164 QStringList itemData = subfolder.split(PATTERN_SEPERATOR);
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165 if (itemData.size() != columns.size()) {
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166 errors << subfolder;
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167 continue;
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168 }
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169 QList<QStandardItem*> items;
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170 foreach (const QString& part, itemData) {
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171 QStandardItem * item = new QStandardItem(part);
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172 item->setData(dir.absoluteFilePath(subfolder));
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173 items.append(item);
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174 }
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175 mModel->appendRow(items);
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176 }
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177 mSortModel->setSourceModel(mModel);
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178 if (!errors.isEmpty()) {
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179 QString errMsg = tr("The following folders did not match the pattern: %1").arg(mFolderPattern);
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180 errMsg += "\n" + errors.join("\n");
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181 QMessageBox::warning(this, tr("Failed to parse some folders."), errMsg);
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182 }
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183 }
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184
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185 void FolderSelectDialog::wantToAccept() {
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186 QItemSelectionModel *selection = mView->selectionModel();
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187 QModelIndexList selected = selection->selectedIndexes();
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188 if (selected.isEmpty()) { /* Ok should not be enabled in that case */
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189 return;
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190 }
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191 const QString folder = selected[0].data(Qt::UserRole + 1).toString();
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192
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193 emit folderSelected(folder);
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194 accept();
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195 }
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196
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197 void FolderSelectDialog::changeFolderClicked()
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198 {
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199 const QString oldFolder = mCurFolder;
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200 const QString startLoc = mCurFolder.isEmpty() ?
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201 QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) :
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202 mCurFolder;
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203
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204 QString outFolder = QFileDialog::getExistingDirectory(
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205 this, tr("Select %1").arg(mPathLabelString),
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206 startLoc);
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207 if (outFolder.isEmpty()) {
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208 /* User aborted */
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209 return;
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210 }
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211 setFolder(outFolder);
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212 }
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