File indexing completed on 2023-05-30 11:30:46

 /**
  * Copyright (C) 2004, 2007, 2009 Michael Pyne <mpyne@kde.org>
  * Copyright (C) 2003 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2014 Arnold Dumas <contact@arnolddumas.fr>
  *
  * This program is free software; you can redistribute it and/or modify it under
  * the terms of the GNU General Public License as published by the Free Software
  * Foundation; either version 2 of the License, or (at your option) any later
  * version.
  *
  * This program is distributed in the hope that it will be useful, but WITHOUT ANY
  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  * PARTICULAR PURPOSE. See the GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License along with
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "filerenamer.h"
 
 #include <algorithm>
 
 #include <kiconloader.h>
 #include <KLocalizedString>
 #include <kio/job.h>
 #include <kdesktopfile.h>
 #include <kconfiggroup.h>
 #include <KSharedConfig>
 #include <klineedit.h>
 #include <kmessagebox.h>
 
 #include <QFile>
 #include <QTimer>
 #include <QCheckBox>
 #include <QDir>
 #include <QDialog>
 #include <QDialogButtonBox>
 #include <QUrl>
 #include <QLabel>
 #include <QPixmap>
 #include <QFrame>
 #include <QTreeWidget>
 #include <QScrollBar>
 #include <QPushButton>
 #include <QHeaderView>
 
 #include "coverinfo.h"
 #include "exampleoptions.h"
 #include "filehandle.h"
 #include "filerenameroptions.h"
 #include "iconsupport.h"
 #include "juk_debug.h"
 #include "juktag.h"
 #include "playlist.h" // processEvents()
 #include "playlistitem.h"
 
 class ConfirmationDialog : public QDialog
 {
 public:
     ConfirmationDialog(const QMap<QString, QString> &files,
                        QWidget *parent = nullptr)
         : QDialog(parent)
     {
         using namespace IconSupport; // ""_icon
 
         setModal(true);
         setWindowTitle(i18nc("warning about mass file rename", "Warning"));
 
         auto vboxLayout = new QVBoxLayout(this);
         auto hbox = new QWidget(this);
         auto hboxVLayout = new QVBoxLayout(hbox);
         vboxLayout->addWidget(hbox);
 
         QLabel *l = new QLabel(hbox);
         l->setPixmap(("dialog-warning"_icon).pixmap(KIconLoader::SizeLarge));
         hboxVLayout->addWidget(l);
 
         l = new QLabel(i18n("You are about to rename the following files. "
                             "Are you sure you want to continue?"), hbox);
         hboxVLayout->addWidget(l);
 
         QTreeWidget *lv = new QTreeWidget(this);
 
         QStringList headers;
         headers << i18n("Original Name");
         headers << i18n("New Name");
 
         lv->setHeaderLabels(headers);
         lv->setRootIsDecorated(false);
         vboxLayout->addWidget(lv, 1);
 
         auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Yes | QDialogButtonBox::Cancel, this);
         vboxLayout->addWidget(buttonBox);
         connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
         connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
 
         int lvHeight = 0;
 
         QMap<QString, QString>::ConstIterator it = files.constBegin();
         for(; it != files.constEnd(); ++it) {
             QTreeWidgetItem *item = new QTreeWidgetItem(lv);
             item->setText(0, it.key());
 
             if (it.key() != it.value()) {
                 item->setText(1, it.value());
             }
 
             else {
                 item->setText(1, i18n("No Change"));
             }
 
             lvHeight += lv->visualItemRect(item).height();
         }
 
         lvHeight += lv->horizontalScrollBar()->height() + lv->header()->height();
         lv->setMinimumHeight(qMin(lvHeight, 400));
 
         resize(qMin(width(), 500), qMin(minimumHeight(), 400));
 
         show();
     }
 };
 
 //
 // Implementation of ConfigCategoryReader
 //
 
 ConfigCategoryReader::ConfigCategoryReader() : CategoryReaderInterface(),
     m_currentItem(0)
 {
     KConfigGroup config(KSharedConfig::openConfig(), "FileRenamer");
 
     QList<int> categoryOrder = config.readEntry("CategoryOrder", QList<int>());
     int categoryCount[NumTypes] = { 0 }; // Keep track of each category encountered.
 
     // Set a default:
 
     if(categoryOrder.isEmpty())
         categoryOrder << Artist << Album << Title << Track;
 
     QList<int>::ConstIterator catIt = categoryOrder.constBegin();
     for(; catIt != categoryOrder.constEnd(); ++catIt)
     {
         int catCount = categoryCount[*catIt]++;
         TagType category = static_cast<TagType>(*catIt);
         CategoryID catId(category, catCount);
 
         m_options[catId] = TagRenamerOptions(catId);
         m_categoryOrder << catId;
     }
 
     m_folderSeparators.fill(false, m_categoryOrder.count() - 1);
 
     QList<int> checkedSeparators = config.readEntry("CheckedDirSeparators", QList<int>());
 
     QList<int>::ConstIterator it = checkedSeparators.constBegin();
     for(; it != checkedSeparators.constEnd(); ++it) {
         if(*it < m_folderSeparators.count())
             m_folderSeparators[*it] = true;
     }
 
     m_musicFolder = config.readPathEntry("MusicFolder", "${HOME}/music");
     m_separator = config.readEntry("Separator", " - ");
 }
 
 QString ConfigCategoryReader::categoryValue(TagType type) const
 {
     if(!m_currentItem)
         return QString();
 
     Tag *tag = m_currentItem->file().tag();
 
     switch(type) {
     case Track:
         return QString::number(tag->track());
 
     case Year:
         return QString::number(tag->year());
 
     case Title:
         return tag->title();
 
     case Artist:
         return tag->artist();
 
     case Album:
         return tag->album();
 
     case Genre:
         return tag->genre();
 
     default:
         return QString();
     }
 }
 
 QString ConfigCategoryReader::prefix(const CategoryID &category) const
 {
     return m_options[category].prefix();
 }
 
 QString ConfigCategoryReader::suffix(const CategoryID &category) const
 {
     return m_options[category].suffix();
 }
 
 TagRenamerOptions::EmptyActions ConfigCategoryReader::emptyAction(const CategoryID &category) const
 {
     return m_options[category].emptyAction();
 }
 
 QString ConfigCategoryReader::emptyText(const CategoryID &category) const
 {
     return m_options[category].emptyText();
 }
 
 QList<CategoryID> ConfigCategoryReader::categoryOrder() const
 {
     return m_categoryOrder;
 }
 
 QString ConfigCategoryReader::separator() const
 {
     return m_separator;
 }
 
 QString ConfigCategoryReader::musicFolder() const
 {
     return m_musicFolder;
 }
 
 int ConfigCategoryReader::trackWidth(int categoryNum) const
 {
     return m_options[CategoryID(Track, categoryNum)].trackWidth();
 }
 
 bool ConfigCategoryReader::hasFolderSeparator(int index) const
 {
     if(index >= m_folderSeparators.count())
         return false;
     return m_folderSeparators[index];
 }
 
 bool ConfigCategoryReader::isDisabled(const CategoryID &category) const
 {
     return m_options[category].disabled();
 }
 
 //
 // Implementation of FileRenamerWidget
 //
 
 FileRenamerWidget::FileRenamerWidget(QWidget *parent) :
     QWidget(parent),
     CategoryReaderInterface(),
     m_ui(new Ui::FileRenamerBase),
     m_exampleFromFile(false)
 {
     m_ui->setupUi(this);
 
     // This must be created before createTagRows() is called.
 
     m_exampleDialog = new ExampleOptionsDialog(this);
 
     createTagRows();
     loadConfig();
 
     // Add correct text to combo box.
     m_ui->m_category->clear();
     for(int i = StartTag; i < NumTypes; ++i) {
         QString category = TagRenamerOptions::tagTypeText(static_cast<TagType>(i));
         m_ui->m_category->addItem(category);
     }
 
     connect(m_exampleDialog, &ExampleOptionsDialog::signalShown,
             this,            &FileRenamerWidget::exampleDialogShown);
     connect(m_exampleDialog, &ExampleOptionsDialog::signalHidden,
             this,            &FileRenamerWidget::exampleDialogHidden);
     connect(m_exampleDialog, &ExampleOptionsDialog::dataChanged,
             this,            &FileRenamerWidget::dataSelected);
     connect(m_exampleDialog, &ExampleOptionsDialog::fileChanged,
             this,            &FileRenamerWidget::fileSelected);
     connect(m_ui->dlgButtonBox, &QDialogButtonBox::accepted, this, [this]() {
                 emit accepted();
             });
     connect(m_ui->dlgButtonBox, &QDialogButtonBox::rejected, this, [this]() {
                 emit rejected();
             });
 
     exampleTextChanged();
 }
 
 void FileRenamerWidget::loadConfig()
 {
     QList<int> checkedSeparators;
     KConfigGroup config(KSharedConfig::openConfig(), "FileRenamer");
 
     for(int i = 0; i < m_rows.count(); ++i)
         m_rows[i].options = TagRenamerOptions(m_rows[i].category);
 
     checkedSeparators = config.readEntry("CheckedDirSeparators", QList<int>());
 
     foreach(int separator, checkedSeparators) {
         if(separator < m_folderSwitches.count())
             m_folderSwitches[separator]->setChecked(true);
     }
 
     QString path = config.readEntry("MusicFolder", "${HOME}/music");
     m_ui->m_musicFolder->setUrl(QUrl::fromLocalFile(path));
     m_ui->m_musicFolder->setMode(KFile::Directory |
                                  KFile::ExistingOnly |
                                  KFile::LocalOnly);
 
     m_ui->m_separator->setEditText(config.readEntry("Separator", " - "));
 }
 
 void FileRenamerWidget::saveConfig()
 {
     KConfigGroup config(KSharedConfig::openConfig(), "FileRenamer");
     QList<int> checkedSeparators;
     QList<int> categoryOrder;
 
     for(int i = 0; i < m_rows.count(); ++i) {
         int rowId = idOfPosition(i); // Write out in GUI order, not m_rows order
         m_rows[rowId].options.saveConfig(m_rows[rowId].category.categoryNumber);
         categoryOrder += m_rows[rowId].category.category;
     }
 
     for(int i = 0; i < m_folderSwitches.count(); ++i)
         if(m_folderSwitches[i]->isChecked() == true)
             checkedSeparators += i;
 
     config.writeEntry("CheckedDirSeparators", checkedSeparators);
     config.writeEntry("CategoryOrder", categoryOrder);
     config.writePathEntry("MusicFolder", m_ui->m_musicFolder->url().path());
     config.writeEntry("Separator", m_ui->m_separator->currentText());
 
     config.sync();
 }
 
 FileRenamerWidget::~FileRenamerWidget()
 {
 }
 
 int FileRenamerWidget::addRowCategory(TagType category)
 {
     using namespace IconSupport; // ""_icon
 
     static QIcon up   = "go-up"_icon;
     static QIcon down = "go-down"_icon;
 
     // Find number of categories already of this type.
     int categoryCount = std::count_if(m_rows.cbegin(), m_rows.cend(),
             [category](const Row &r) { return r.category.category == category; }
             );
 
     Row row;
 
     row.category = CategoryID(category, categoryCount);
     row.position = m_rows.count();
 
     QFrame *frame = new QFrame(m_mainFrame);
     QHBoxLayout *frameLayout = new QHBoxLayout(frame);
     frameLayout->setContentsMargins(3, 3, 3, 3);
 
     row.widget = frame;
     frame->setFrameShape(QFrame::Box);
     frame->setLineWidth(1);
 
     QBoxLayout *mainFrameLayout = static_cast<QBoxLayout *>(m_mainFrame->layout());
     mainFrameLayout->addWidget(frame, 1);
 
     QFrame *buttons = new QFrame(frame);
     QVBoxLayout *buttonLayout = new QVBoxLayout(buttons);
     frameLayout->addWidget(buttons);
     buttons->setFrameStyle(QFrame::Plain | QFrame::Box);
     buttons->setLineWidth(1);
 
     row.upButton = new QPushButton(buttons);
     row.downButton = new QPushButton(buttons);
 
     row.upButton->setIcon(up);
     row.downButton->setIcon(down);
     row.upButton->setFlat(true);
     row.downButton->setFlat(true);
 
     buttonLayout->addWidget(row.upButton);
     buttonLayout->addWidget(row.downButton);
 
     QString labelText = QString("<b>%1</b>").arg(TagRenamerOptions::tagTypeText(category));
     QLabel *label = new QLabel(labelText, frame);
     frameLayout->addWidget(label, 1);
     label->setAlignment(Qt::AlignCenter);
 
     QVBoxLayout *optionLayout = new QVBoxLayout;
     frameLayout->addLayout(optionLayout);
 
     row.enableButton = new QPushButton(i18nc("remove music genre from file renamer", "Remove"), frame);
     optionLayout->addWidget(row.enableButton);
 
     row.optionsButton = new QPushButton(i18nc("file renamer genre options", "Options"), frame);
     optionLayout->addWidget(row.optionsButton);
 
     row.widget->show();
     m_rows.append(row);
 
     assignPositionHandlerForRow(row);
 
     // Disable add button if there's too many rows.
     if(m_rows.count() == MAX_CATEGORIES)
         m_ui->m_insertCategory->setEnabled(false);
 
     return row.position;
 }
 
 void FileRenamerWidget::assignPositionHandlerForRow(Row &row)
 {
     const auto id = row.position;
 
     disconnect(row.upButton);
     disconnect(row.downButton);
     disconnect(row.enableButton);
     disconnect(row.optionsButton);
 
     connect(row.upButton, &QPushButton::clicked, this, [this, id]() {
             this->moveItemUp(id);
         });
     connect(row.downButton, &QPushButton::clicked, this, [this, id]() {
             this->moveItemDown(id);
         });
     connect(row.enableButton, &QPushButton::clicked, this, [this, id]() {
             this->slotRemoveRow(id);
         });
     connect(row.optionsButton, &QPushButton::clicked, this, [this, id]() {
             this->showCategoryOption(id);
         });
 }
 
 bool FileRenamerWidget::removeRow(int id)
 {
     if(id >= m_rows.count()) {
         qCWarning(JUK_LOG) << "Trying to remove row, but " << id << " is out-of-range.\n";
         return false;
     }
 
     if(m_rows.count() == 1) {
         qCCritical(JUK_LOG) << "Can't remove last row of File Renamer.\n";
         return false;
     }
 
     delete m_rows[id].widget;
     m_rows[id].widget        = nullptr;
     m_rows[id].enableButton  = nullptr;
     m_rows[id].upButton      = nullptr;
     m_rows[id].optionsButton = nullptr;
     m_rows[id].downButton    = nullptr;
 
     int checkboxPosition = 0; // Remove first checkbox.
 
     // If not the first row, remove the checkbox before it.
     if(m_rows[id].position > 0)
         checkboxPosition = m_rows[id].position - 1;
 
     // The checkbox is contained within a layout widget, so the layout
     // widget is the one the needs to die.
     delete m_folderSwitches[checkboxPosition]->parent();
     m_folderSwitches.erase(&m_folderSwitches[checkboxPosition]);
 
     // Go through all the rows and if they have the same category and a
     // higher categoryNumber, decrement the number.  Also update the
     // position identifier.
     for(int i = 0; i < m_rows.count(); ++i) {
         if(i == id)
             continue; // Don't mess with ourself.
 
         if((m_rows[id].category.category == m_rows[i].category.category) &&
            (m_rows[id].category.categoryNumber < m_rows[i].category.categoryNumber))
         {
             --m_rows[i].category.categoryNumber;
         }
 
         // Items are moving up.
         if(m_rows[id].position < m_rows[i].position)
             --m_rows[i].position;
     }
 
     // Every row after the one we delete will have a different identifier, since
     // the identifier is simply its index into m_rows.  So we need to re-do the
     // signal mappings for the affected rows after updating its position.
     for(int i = id + 1; i < m_rows.count(); ++i)
         assignPositionHandlerForRow(m_rows[i]);
 
     m_rows.erase(&m_rows[id]);
 
     // Make sure we update the buttons of affected rows.
     m_rows[idOfPosition(0)].upButton->setEnabled(false);
     m_rows[idOfPosition(m_rows.count() - 1)].downButton->setEnabled(false);
 
     // We can insert another row now, make sure GUI is updated to match.
     m_ui->m_insertCategory->setEnabled(true);
 
     QTimer::singleShot(0, this, &FileRenamerWidget::exampleTextChanged);
     return true;
 }
 
 void FileRenamerWidget::addFolderSeparatorCheckbox()
 {
     QWidget *temp = new QWidget(m_mainFrame);
     m_mainFrame->layout()->addWidget(temp);
 
     QHBoxLayout *l = new QHBoxLayout(temp);
 
     QCheckBox *cb = new QCheckBox(i18n("Insert folder separator"), temp);
     m_folderSwitches.append(cb);
     l->addWidget(cb, 0, Qt::AlignCenter);
     cb->setChecked(false);
 
     connect(cb, &QCheckBox::toggled, this, &FileRenamerWidget::exampleTextChanged);
 
     temp->show();
 }
 
 void FileRenamerWidget::createTagRows()
 {
     KConfigGroup config(KSharedConfig::openConfig(), "FileRenamer");
     QList<int> categoryOrder = config.readEntry("CategoryOrder", QList<int>());
 
     if(categoryOrder.isEmpty())
         categoryOrder << Artist << Album << Title << Track;
 
     // Setup arrays.
     m_rows.reserve(categoryOrder.count());
     m_folderSwitches.reserve(categoryOrder.count() - 1);
 
     m_mainFrame = new QFrame(m_ui->m_mainView);
     m_ui->m_mainView->setWidget(m_mainFrame);
     m_ui->m_mainView->setWidgetResizable(true);
 
     QVBoxLayout *frameLayout = new QVBoxLayout(m_mainFrame);
     frameLayout->setContentsMargins(10, 10, 10, 10);
     frameLayout->setSpacing(5);
 
     // OK, the deal with the categoryOrder variable is that we need to create
     // the rows in the order that they were saved in (the order given by categoryOrder).
     // The signal mappers operate according to the row identifier.  To find the position of
     // a row given the identifier, use m_rows[id].position.  To find the id of a given
     // position, use idOfPosition(position).
 
     for(auto it = categoryOrder.cbegin(); it != categoryOrder.cend(); ++it) {
         if(*it < StartTag || *it >= NumTypes) {
             qCCritical(JUK_LOG) << "Invalid category encountered in file renamer configuration.\n";
             continue;
         }
 
         if(m_rows.count() == MAX_CATEGORIES) {
             qCCritical(JUK_LOG) << "Maximum number of File Renamer tags reached, bailing.\n";
             break;
         }
 
         addRowCategory(static_cast<TagType>(*it));
 
         // Insert the directory separator checkbox if this isn't the last
         // item.
 
         if((it + 1) != categoryOrder.constEnd())
             addFolderSeparatorCheckbox();
     }
 
     m_rows.first().upButton->setEnabled(false);
     m_rows.last().downButton->setEnabled(false);
 
     // If we have maximum number of categories already, don't let the user
     // add more.
     if(m_rows.count() >= MAX_CATEGORIES)
         m_ui->m_insertCategory->setEnabled(false);
 }
 
 void FileRenamerWidget::exampleTextChanged()
 {
     // Just use .mp3 as an example
     if(m_exampleFromFile && (m_exampleFile.isEmpty() ||
                              !FileHandle(m_exampleFile).tag()->isValid()))
     {
         m_ui->m_exampleText->setText(i18n("No file selected, or selected file has no tags."));
         return;
     }
 
     m_ui->m_exampleText->setText(FileRenamer::fileName(*this) + ".mp3");
 }
 
 QString FileRenamerWidget::fileCategoryValue(TagType category) const
 {
     FileHandle file(m_exampleFile);
     Tag *tag = file.tag();
 
     switch(category) {
     case Track:
         return QString::number(tag->track());
 
     case Year:
         return QString::number(tag->year());
 
     case Title:
         return tag->title();
 
     case Artist:
         return tag->artist();
 
     case Album:
         return tag->album();
 
     case Genre:
         return tag->genre();
 
     default:
         return QString();
     }
 }
 
 QString FileRenamerWidget::categoryValue(TagType category) const
 {
     if(m_exampleFromFile)
         return fileCategoryValue(category);
 
     const ExampleOptions *example = m_exampleDialog->widget();
 
     switch (category) {
     case Track:
         return example->m_exampleTrack->text();
 
     case Year:
         return example->m_exampleYear->text();
 
     case Title:
         return example->m_exampleTitle->text();
 
     case Artist:
         return example->m_exampleArtist->text();
 
     case Album:
         return example->m_exampleAlbum->text();
 
     case Genre:
         return example->m_exampleGenre->text();
 
     default:
         return QString();
     }
 }
 
 QList<CategoryID> FileRenamerWidget::categoryOrder() const
 {
     QList<CategoryID> list;
 
     // Iterate in GUI row order.
     for(int i = 0; i < m_rows.count(); ++i) {
         int rowId = idOfPosition(i);
         list += m_rows[rowId].category;
     }
 
     return list;
 }
 
 bool FileRenamerWidget::hasFolderSeparator(int index) const
 {
     if(index >= m_folderSwitches.count())
         return false;
     return m_folderSwitches[index]->isChecked();
 }
 
 void FileRenamerWidget::moveItem(int id, MovementDirection direction)
 {
     QWidget *l = m_rows[id].widget;
     int bottom = m_rows.count() - 1;
     int pos = m_rows[id].position;
     int newPos = (direction == MoveUp) ? pos - 1 : pos + 1;
 
     // Item we're moving can't go further down after this.
 
     if((pos == (bottom - 1) && direction == MoveDown) ||
        (pos == bottom && direction == MoveUp))
     {
         int idBottomRow = idOfPosition(bottom);
         int idAboveBottomRow = idOfPosition(bottom - 1);
 
         m_rows[idBottomRow].downButton->setEnabled(true);
         m_rows[idAboveBottomRow].downButton->setEnabled(false);
     }
 
     // We're moving the top item, do some button switching.
 
     if((pos == 0 && direction == MoveDown) || (pos == 1 && direction == MoveUp)) {
         int idTopItem = idOfPosition(0);
         int idBelowTopItem = idOfPosition(1);
 
         m_rows[idTopItem].upButton->setEnabled(true);
         m_rows[idBelowTopItem].upButton->setEnabled(false);
     }
 
     // This is the item we're swapping with.
 
     int idSwitchWith = idOfPosition(newPos);
     QWidget *w = m_rows[idSwitchWith].widget;
 
     // Update the table of widget rows.
 
     std::swap(m_rows[id].position, m_rows[idSwitchWith].position);
 
     // Move the item two spaces above/below its previous position.  It has to
     // be 2 spaces because of the checkbox.
 
     QBoxLayout *layout = dynamic_cast<QBoxLayout *>(m_mainFrame->layout());
     if ( !layout )
         return;
 
     layout->removeWidget(l);
     layout->insertWidget(2 * newPos, l);
 
     // Move the top item two spaces in the opposite direction, for a similar
     // reason.
 
     layout->removeWidget(w);
     layout->insertWidget(2 * pos, w);
     layout->invalidate();
 
     QTimer::singleShot(0, this, &FileRenamerWidget::exampleTextChanged);
 }
 
 int FileRenamerWidget::idOfPosition(int position) const
 {
     if(position >= m_rows.count()) {
         qCCritical(JUK_LOG) << "Search for position " << position << " out-of-range.\n";
         return -1;
     }
 
     for(int i = 0; i < m_rows.count(); ++i)
         if(m_rows[i].position == position)
             return i;
 
     qCCritical(JUK_LOG) << "Unable to find identifier for position " << position;
     return -1;
 }
 
 int FileRenamerWidget::findIdentifier(const CategoryID &category) const
 {
     for(int index = 0; index < m_rows.count(); ++index)
         if(m_rows[index].category == category)
             return index;
 
     qCCritical(JUK_LOG) << "Unable to find match for category " <<
         TagRenamerOptions::tagTypeText(category.category) <<
         ", number " << category.categoryNumber;
 
     return MAX_CATEGORIES;
 }
 
 void FileRenamerWidget::showCategoryOption(int id)
 {
     TagOptionsDialog *dialog = new TagOptionsDialog(this, m_rows[id].options, m_rows[id].category.categoryNumber);
 
     if(dialog->exec() == QDialog::Accepted) {
         m_rows[id].options = dialog->options();
         exampleTextChanged();
     }
 
     delete dialog;
 }
 
 void FileRenamerWidget::moveItemUp(int id)
 {
     moveItem(id, MoveUp);
 }
 
 void FileRenamerWidget::moveItemDown(int id)
 {
     moveItem(id, MoveDown);
 }
 
 void FileRenamerWidget::toggleExampleDialog()
 {
     m_exampleDialog->setHidden(!m_exampleDialog->isHidden());
 }
 
 void FileRenamerWidget::insertCategory()
 {
     TagType category = static_cast<TagType>(m_ui->m_category->currentIndex());
     if(m_ui->m_category->currentIndex() < 0 || category >= NumTypes) {
         qCCritical(JUK_LOG) << "Trying to add unknown category somehow.\n";
         return;
     }
 
     // We need to enable the down button of the current bottom row since it
     // can now move down.
     int idBottom = idOfPosition(m_rows.count() - 1);
     m_rows[idBottom].downButton->setEnabled(true);
 
     addFolderSeparatorCheckbox();
 
     // Identifier of new row.
     int id = addRowCategory(category);
 
     // Set its down button to be disabled.
     m_rows[id].downButton->setEnabled(false);
 
     m_mainFrame->layout()->invalidate();
     m_ui->m_mainView->update();
 
     // Now update according to the code in loadConfig().
     m_rows[id].options = TagRenamerOptions(m_rows[id].category);
     exampleTextChanged();
 }
 
 void FileRenamerWidget::exampleDialogShown()
 {
     m_ui->m_showExample->setText(i18n("Hide Renamer Test Dialog"));
 }
 
 void FileRenamerWidget::exampleDialogHidden()
 {
     m_ui->m_showExample->setText(i18n("Show Renamer Test Dialog"));
 }
 
 void FileRenamerWidget::fileSelected(const QString &file)
 {
     m_exampleFromFile = true;
     m_exampleFile = file;
     exampleTextChanged();
 }
 
 void FileRenamerWidget::dataSelected()
 {
     m_exampleFromFile = false;
     exampleTextChanged();
 }
 
 QString FileRenamerWidget::separator() const
 {
     return m_ui->m_separator->currentText();
 }
 
 QString FileRenamerWidget::musicFolder() const
 {
     return m_ui->m_musicFolder->url().path();
 }
 
 void FileRenamerWidget::slotRemoveRow(int id)
 {
     // Remove the given identified row.
     if(!removeRow(id))
         qCCritical(JUK_LOG) << "Unable to remove row " << id;
 }
 
 //
 // Implementation of FileRenamer
 //
 
 FileRenamer::FileRenamer()
 {
 }
 
 void FileRenamer::rename(PlaylistItem *item)
 {
     PlaylistItemList list;
     list.append(item);
 
     rename(list);
 }
 
 void FileRenamer::rename(const PlaylistItemList &items)
 {
     ConfigCategoryReader reader;
     QStringList errorFiles;
     QMap<QString, QString> map;
     QMap<QString, PlaylistItem *> itemMap;
 
     for(PlaylistItemList::ConstIterator it = items.constBegin(); it != items.constEnd(); ++it) {
         reader.setPlaylistItem(*it);
         QString oldFile = (*it)->file().absFilePath();
         QString extension = (*it)->file().fileInfo().suffix();
         QString newFile = fileName(reader) + '.' + extension;
 
         if(oldFile != newFile) {
             map[oldFile] = newFile;
             itemMap[oldFile] = *it;
         }
     }
 
     if(itemMap.isEmpty() || ConfirmationDialog(map).exec() != QDialog::Accepted)
         return;
 
     QApplication::setOverrideCursor(Qt::WaitCursor);
     for(QMap<QString, QString>::ConstIterator it = map.constBegin();
         it != map.constEnd(); ++it)
     {
         if(moveFile(it.key(), it.value())) {
             itemMap[it.key()]->setFile(it.value());
             itemMap[it.key()]->refresh();
 
             setFolderIcon(QUrl::fromLocalFile(it.value()), itemMap[it.key()]);
         }
         else
             errorFiles << i18n("%1 to %2", it.key(), it.value());
 
         processEvents();
     }
     QApplication::restoreOverrideCursor();
 
     if(!errorFiles.isEmpty())
         KMessageBox::errorList(0, i18n("The following rename operations failed:\n"), errorFiles);
 }
 
 bool FileRenamer::moveFile(const QString &src, const QString &dest)
 {
     qCDebug(JUK_LOG) << "Moving file " << src << " to " << dest;
 
     QUrl srcURL = QUrl::fromLocalFile(src);
     QUrl dstURL = QUrl::fromLocalFile(dest);
 
     if(!srcURL.isValid() || !dstURL.isValid() || srcURL == dstURL)
         return false;
 
     QUrl dir = dstURL.adjusted(QUrl::RemoveFilename); // resolves to path w/out filename
     if(!QDir().mkpath(dir.path())) {
         qCCritical(JUK_LOG) << "Unable to create directory " << dir.path();
         return false;
     }
 
     // Move the file.
     KIO::Job *job = KIO::file_move(srcURL, dstURL);
     return job->exec();
 }
 
 void FileRenamer::setFolderIcon(const QUrl &dstURL, const PlaylistItem *item)
 {
     if(item->file().tag()->album().isEmpty() ||
        !item->file().coverInfo()->hasCover())
     {
         return;
     }
 
     // Split path, and go through each path element.  If a path element has
     // the album information, set its folder icon.
     QStringList elements = dstURL.path().split('/',
             Qt::SkipEmptyParts
             );
     QString path;
 
     for(QStringList::ConstIterator it = elements.constBegin(); it != elements.constEnd(); ++it) {
         path.append('/' + (*it));
 
         qCDebug(JUK_LOG) << "Checking path: " << path;
         if((*it).contains(item->file().tag()->album()) &&
            QDir(path).exists() &&
            !QFile::exists(path + "/.directory"))
         {
             // Seems to be a match, let's set the folder icon for the current
             // path.  First we should write out the file.
 
             QPixmap thumb = item->file().coverInfo()->pixmap(CoverInfo::Thumbnail);
             thumb.save(path + "/.juk-thumbnail.png", "PNG");
 
             KDesktopFile dirFile(path + "/.directory");
             KConfigGroup desktopGroup(dirFile.desktopGroup());
 
             if(!desktopGroup.hasKey("Icon")) {
                 desktopGroup.writePathEntry("Icon", QString("%1/.juk-thumbnail.png").arg(path));
                 dirFile.sync();
             }
 
             return;
         }
     }
 }
 
 /**
  * Returns iterator pointing to the last item enabled in the given list with
  * a non-empty value (or is required to be included).
  */
 QList<CategoryID>::ConstIterator lastEnabledItem(const QList<CategoryID> &list,
                                                  const CategoryReaderInterface &interface)
 {
     QList<CategoryID>::ConstIterator it = list.constBegin();
     QList<CategoryID>::ConstIterator last = list.constEnd();
 
     for(; it != list.constEnd(); ++it) {
         if(interface.isRequired(*it) || (!interface.isDisabled(*it) &&
               !interface.categoryValue((*it).category).isEmpty()))
         {
             last = it;
         }
     }
 
     return last;
 }
 
 QString FileRenamer::fileName(const CategoryReaderInterface &interface)
 {
     const QList<CategoryID> categoryOrder = interface.categoryOrder();
     const QString separator = interface.separator();
     const QString folder = interface.musicFolder();
     QList<CategoryID>::ConstIterator lastEnabled;
     int i = 0;
     QStringList list;
     QChar dirSeparator (QDir::separator());
 
     // Use lastEnabled to properly handle folder separators.
     lastEnabled = lastEnabledItem(categoryOrder, interface);
     bool pastLast = false; // Toggles to true once we've passed lastEnabled.
 
     for(QList<CategoryID>::ConstIterator it = categoryOrder.constBegin();
             it != categoryOrder.constEnd();
             ++it, ++i)
     {
         if(it == lastEnabled)
             pastLast = true;
 
         if(interface.isDisabled(*it))
             continue;
 
         QString value = interface.value(*it);
 
         // The user can use the folder separator checkbox to add folders, so don't allow
         // slashes that slip in to accidentally create new folders.  Should we filter this
         // back out when showing it in the GUI?
         value.replace('/', "%2f");
 
         if(!pastLast && interface.hasFolderSeparator(i))
             value.append(dirSeparator);
 
         if(interface.isRequired(*it) || !value.isEmpty())
             list.append(value);
     }
 
     // Construct a single string representation, handling strings ending in
     // '/' specially
 
     QString result;
 
     for(QStringList::ConstIterator it = list.constBegin(); it != list.constEnd(); /* Empty */) {
         result += *it;
 
         ++it; // Manually advance iterator to check for end-of-list.
 
         // Add separator unless at a directory boundary
         if(it != list.constEnd() &&
            !(*it).startsWith(dirSeparator) && // Check beginning of next item.
            !result.endsWith(dirSeparator))
         {
             result += separator;
         }
     }
 
     return QString(folder + dirSeparator + result);
 }
 
 // vim: set et sw=4 tw=0 sta: