andre@25: /* Copyright (C) 2015 by ETH Zürich
andre@25:  * Software engineering by Intevation GmbH
andre@9:  *
andre@9:  * This file is Free Software under the GNU GPL (v>=2)
andre@9:  * and comes with ABSOLUTELY NO WARRANTY!
andre@9:  * See LICENSE.txt for details.
andre@9:  */
andre@9: #include "folderselectdialog.h"
andre@9: #include "constants.h"
andre@9: 
andre@9: #include <QSortFilterProxyModel>
andre@9: #include <QStandardItemModel>
andre@9: #include <QTableView>
andre@9: #include <QVBoxLayout>
andre@9: #include <QLineEdit>
andre@9: #include <QLabel>
andre@9: #include <QApplication>
andre@9: #include <QStyle>
andre@9: #include <QFileDialog>
andre@9: #include <QStandardPaths>
andre@9: #include <QPushButton>
andre@9: #include <QHeaderView>
andre@9: #include <QDebug>
andre@9: #include <QSettings>
andre@9: #include <QStringList>
andre@9: #include <QStandardItem>
andre@45: #include <QMessageBox>
andre@9: 
andre@84: static ulong ipStringToLong(const QString str) {
andre@84:     QStringList octets = str.split(".");
andre@84:     if (!octets.size() > 3) {
andre@84:         qWarning() << "invalid call to str to long";
andre@84:         return 0;
andre@84:     }
andre@84:     ulong s1 = octets.at(0).toLong();
andre@84:     ulong s2 = octets.at(1).toLong();
andre@84:     ulong s3 = octets.at(2).toLong();
andre@84:     ulong s4 = octets.at(3).toLong();
andre@84: 
andre@84:     return (s1 << 24) | (s2 << 16) | (s3 << 8) | s4;
andre@84: }
andre@84: 
andre@84: class IPAwareSortModel : public QSortFilterProxyModel
andre@84: {
andre@84: public:
andre@84:     bool lessThan(const QModelIndex &left,
andre@84:                   const QModelIndex &right) const
andre@84:     {
andre@84:         QString leftString = sourceModel()->data(left).toString();
andre@84:         QString rightString = sourceModel()->data(right).toString();
andre@84: 
andre@84:         static QRegExp ipPattern("\\b\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\b");
andre@84:         if (ipPattern.indexIn(leftString) != -1 && ipPattern.indexIn(rightString) != -1) {
andre@84:             return ipStringToLong(leftString) > ipStringToLong(rightString);
andre@84:         } else {
andre@84:             return QSortFilterProxyModel::lessThan(left, right);
andre@84:         }
andre@84:     }
andre@84: };
andre@84: 
andre@9: FolderSelectDialog::FolderSelectDialog(const QString& startFolder,
andre@9:                                        const QString& folderPattern,
andre@9:                                        const QString& pathLabel,
andre@9:                                        QWidget * parent,
andre@9:                                        Qt::WindowFlags f) :
andre@9:     QDialog(parent, f),
andre@9:     mCurFolder(startFolder),
andre@9:     mFolderPattern(folderPattern),
andre@9:     mPathLabelString(pathLabel),
andre@9:     mPathLabel(NULL),
andre@9:     mPathLineEdit(NULL)
andre@9: {
andre@84:     mSortModel = new IPAwareSortModel();
andre@9:     mModel = new QStandardItemModel();
andre@9:     mShowPathSelection = !pathLabel.isEmpty();
andre@9:     setupGUI();
andre@9:     if (mShowPathSelection) {
andre@9:         mPathLabel->setText("<b>" + pathLabel + ":</b>   ");
andre@9:     }
andre@9:     setFolder(mCurFolder);
andre@50: #ifndef Q_OS_WIN
andre@50:     QIcon windowIcon = QIcon(":/icon-64.png");
andre@50:     setWindowIcon(windowIcon);
andre@50: #endif
andre@9: }
andre@9: 
andre@9: void FolderSelectDialog::setupGUI() {
andre@9:     QVBoxLayout *base = new QVBoxLayout;
andre@9:     QHBoxLayout *folderChangeArea = new QHBoxLayout;
andre@9: 
andre@9:     if (mShowPathSelection) {
andre@9:         mPathLabel = new QLabel;
andre@9:         folderChangeArea->addWidget(mPathLabel);
andre@9:         base->addLayout(folderChangeArea);
andre@9: 
andre@9:         QPushButton *folderSelect = new QPushButton();
andre@9:         folderSelect->setToolTip(tr("Select folder"));
andre@9:         folderSelect->setIcon(QApplication::style()->standardIcon(QStyle::SP_DirIcon));
andre@9:         connect(folderSelect, &QPushButton::clicked, this,
andre@9:                 &FolderSelectDialog::changeFolderClicked);
andre@9:         folderChangeArea->addWidget(folderSelect);
andre@9: 
andre@9:         mPathLineEdit = new QLineEdit;
andre@9:         mPathLineEdit->setClearButtonEnabled(true);
andre@9:         connect(mPathLineEdit, &QLineEdit::textChanged, this,
andre@9:                 &FolderSelectDialog::pathLineChanged);
andre@9:         folderChangeArea->addWidget(mPathLineEdit);
andre@9: 
andre@9:         mGoButton = new QPushButton(tr("Go"));
andre@9:         mGoButton->setEnabled(false);
andre@90: 
andre@90:         QPushButton *backBtn = new QPushButton;
andre@90:         backBtn->setIcon(QApplication::style()->standardIcon(QStyle::SP_ArrowBack));
andre@90:         backBtn->setToolTip(tr("Back to exam selection."));
andre@90: 
andre@9:         folderChangeArea->addWidget(mGoButton);
andre@9:         connect(mGoButton, &QPushButton::clicked, this,
andre@9:                 &FolderSelectDialog::goClicked);
andre@79:         connect(mPathLineEdit, &QLineEdit::returnPressed, this,
andre@79:                 &FolderSelectDialog::goClicked);
andre@9:     }
andre@9: 
andre@88:     mFilterWidget = new FilterWidget(mSortModel, false);
andre@9:     base->addWidget(mFilterWidget);
andre@88:     connect(mSortModel, &QSortFilterProxyModel::sourceModelChanged,
andre@88:             mFilterWidget, &FilterWidget::headersChanged);
andre@9: 
andre@9:     mView = new QTableView;
andre@9:     mView->setModel(mSortModel);
andre@9: 
andre@9:     mView->setSelectionBehavior(QAbstractItemView::SelectRows);
andre@9:     mView->setSelectionMode(QAbstractItemView::SingleSelection);
andre@9:     mView->setSortingEnabled(true);
andre@9:     mView->setEditTriggers(QAbstractItemView::NoEditTriggers);
andre@9:     connect(mView->selectionModel(), &QItemSelectionModel::selectionChanged,
andre@9:             this, &FolderSelectDialog::selectionChanged);
andre@9:     connect(mView, &QTableView::doubleClicked, this,
andre@9:             &FolderSelectDialog::wantToAccept);
andre@9: 
andre@9:     base->addWidget(mView);
andre@9: 
andre@9:     QHBoxLayout * bottomButtons = new QHBoxLayout;
andre@9:     base->addLayout(bottomButtons);
andre@9: 
andre@9:     mOkButton = new QPushButton(tr("Ok"));
andre@9:     mOkButton->setEnabled(false);
andre@9:     connect(mOkButton, &QPushButton::clicked, this,
andre@9:             &FolderSelectDialog::wantToAccept);
andre@9:     bottomButtons->addStretch(-1);
andre@90: 
andre@90:     QPushButton *backBtn = NULL;
andre@90:     if (!mShowPathSelection) {
andre@90:         backBtn = new QPushButton(tr("Back"));
andre@90:         backBtn->setToolTip(tr("Back to exam selection."));
andre@90:         connect(backBtn, &QPushButton::clicked, this,
andre@90:                 &FolderSelectDialog::backClicked);
andre@90:         bottomButtons->addWidget(backBtn);
andre@90:     }
andre@90: 
andre@9:     bottomButtons->addWidget(mOkButton);
andre@9:     setLayout(base);
andre@9: }
andre@9: 
andre@9: void FolderSelectDialog::selectionChanged (const QItemSelection& selected,
andre@9:                                            const QItemSelection& deselected) {
andre@9:     mOkButton->setEnabled(!selected.indexes().isEmpty());
andre@90:     if (mOkButton->isEnabled()) {
andre@90:         mOkButton->setFocus();
andre@90:     }
andre@9: }
andre@9: 
andre@9: void FolderSelectDialog::pathLineChanged() {
andre@9:     const QString path = mPathLineEdit->text();
andre@9:     if (path.isEmpty()) {
andre@9:         mGoButton->setEnabled(false);
andre@9:         return;
andre@9:     }
andre@79:     mGoButton->setEnabled(true);
andre@9: }
andre@9: 
andre@9: 
andre@9: void FolderSelectDialog::goClicked() {
andre@79:     const QString path = mPathLineEdit->text();
andre@79:     QDir dir(path);
andre@79:     if (!dir.exists()) {
andre@79:         QMessageBox::warning(this, tr("Error!"), tr("Failed to access directory: '%1'").arg(path));
andre@79:         mGoButton->setEnabled(false);
andre@79:         return;
andre@79:     }
andre@9:     setFolder(mPathLineEdit->text());
andre@9:     QSettings settings;
andre@9:     /* assuming go is only available in root folder mode */
andre@9:     settings.setValue(ROOT_FOLDER_KEY, mPathLineEdit->text());
andre@9: }
andre@9: 
andre@9: void FolderSelectDialog::setFolder(const QString& folder) {
andre@61:     if (folder.isEmpty()) {
andre@61:         return;
andre@61:     }
andre@9:     mCurFolder = folder;
andre@9:     if (mPathLineEdit) {
andre@9:         mPathLineEdit->setText(mCurFolder);
andre@9:     }
andre@9: 
andre@9:     QStringList columns = mFolderPattern.split(PATTERN_SEPERATOR);
andre@9:     mModel->clear();
andre@9:     mModel->setHorizontalHeaderLabels(columns);
andre@9:     QDir dir(folder);
andre@9:     qDebug() << "Folder set to: " << folder;
andre@45:     QStringList errors;
andre@9:     foreach (const QString & subfolder, dir.entryList(QDir::Dirs |
andre@9:                                                       QDir::Readable |
andre@9:                                                       QDir::NoDotAndDotDot)) {
andre@9:         qDebug() << "Looking at: " << subfolder;
andre@9:         QStringList itemData = subfolder.split(PATTERN_SEPERATOR);
andre@9:         if (itemData.size() != columns.size()) {
andre@45:             errors << subfolder;
andre@9:             continue;
andre@9:         }
andre@9:         QList<QStandardItem*> items;
andre@9:         foreach (const QString& part, itemData) {
andre@9:             QStandardItem * item = new QStandardItem(part);
andre@9:             item->setData(dir.absoluteFilePath(subfolder));
andre@9:             items.append(item);
andre@9:         }
andre@9:         mModel->appendRow(items);
andre@9:     }
andre@9:     mSortModel->setSourceModel(mModel);
andre@45:     if (!errors.isEmpty()) {
andre@45:         QString errMsg = tr("The following folders did not match the pattern: %1").arg(mFolderPattern);
andre@45:         errMsg += "\n" + errors.join("\n");
andre@45:         QMessageBox::warning(this, tr("Failed to parse some folders."), errMsg);
andre@45:     }
andre@86:     mView->resizeColumnsToContents();
andre@9: }
andre@9: 
andre@9: void FolderSelectDialog::wantToAccept() {
andre@9:     QItemSelectionModel *selection = mView->selectionModel();
andre@9:     QModelIndexList selected = selection->selectedIndexes();
andre@9:     if (selected.isEmpty()) { /* Ok should not be enabled in that case */
andre@9:         return;
andre@9:     }
andre@9:     const QString folder = selected[0].data(Qt::UserRole + 1).toString();
andre@9: 
andre@9:     emit folderSelected(folder);
andre@9:     accept();
andre@9: }
andre@9: 
andre@9: void FolderSelectDialog::changeFolderClicked()
andre@9: {
andre@9:     const QString oldFolder = mCurFolder;
andre@9:     const QString startLoc = mCurFolder.isEmpty() ?
andre@9:         QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) :
andre@9:         mCurFolder;
andre@9: 
andre@9:     QString outFolder = QFileDialog::getExistingDirectory(
andre@12:             this, tr("Select %1").arg(mPathLabelString),
andre@9:             startLoc);
andre@9:     if (outFolder.isEmpty()) {
andre@9:         /* User aborted */
andre@9:         return;
andre@9:     }
andre@9:     setFolder(outFolder);
andre@9: }