Warning, file /plasma/plasma-workspace/kcms/style/stylesmodel.cpp was not indexed or was modified since last indexation (in which case cross-reference links may be missing, inaccurate or erroneous).

 /*
     SPDX-FileCopyrightText: 2019 Kai Uwe Broulik <kde@broulik.de>
 
     SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 #include "stylesmodel.h"
 
 #include <QCollator>
 #include <QDir>
 #include <QStandardPaths>
 #include <QStyleFactory>
 
 #include <KConfig>
 #include <KConfigGroup>
 
 #include <algorithm>
 
 StylesModel::StylesModel(QObject *parent)
     : QAbstractListModel(parent)
 {
 }
 
 StylesModel::~StylesModel() = default;
 
 int StylesModel::rowCount(const QModelIndex &parent) const
 {
     if (parent.isValid()) {
         return 0;
     }
 
     return m_data.count();
 }
 
 QVariant StylesModel::data(const QModelIndex &index, int role) const
 {
     if (!checkIndex(index)) {
         return QVariant();
     }
 
     const auto &item = m_data.at(index.row());
 
     switch (role) {
     case Qt::DisplayRole:
         if (!item.display.isEmpty()) {
             return item.display;
         }
         return item.styleName;
     case StyleNameRole:
         return item.styleName;
     case DescriptionRole:
         return item.description;
     case ConfigurableRole:
         return !item.configPage.isEmpty();
     }
 
     return QVariant();
 }
 
 QHash<int, QByteArray> StylesModel::roleNames() const
 {
     return {
         {Qt::DisplayRole, QByteArrayLiteral("display")},
         {StyleNameRole, QByteArrayLiteral("styleName")},
         {DescriptionRole, QByteArrayLiteral("description")},
         {ConfigurableRole, QByteArrayLiteral("configurable")},
     };
 }
 
 QString StylesModel::selectedStyle() const
 {
     return m_selectedStyle;
 }
 
 void StylesModel::setSelectedStyle(const QString &style)
 {
     if (m_selectedStyle == style) {
         return;
     }
 
     const bool firstTime = m_selectedStyle.isNull();
     m_selectedStyle = style;
 
     if (!firstTime) {
         Q_EMIT selectedStyleChanged(style);
     }
     Q_EMIT selectedStyleIndexChanged();
 }
 
 int StylesModel::indexOfStyle(const QString &style) const
 {
     auto it = std::find_if(m_data.begin(), m_data.end(), [&style](const StylesModelData &item) {
         return item.styleName == style;
     });
 
     if (it != m_data.end()) {
         return std::distance(m_data.begin(), it);
     }
 
     return -1;
 }
 
 int StylesModel::selectedStyleIndex() const
 {
     return indexOfStyle(m_selectedStyle);
 }
 
 QString StylesModel::styleConfigPage(const QString &style) const
 {
     const int idx = indexOfStyle(style);
     if (idx == -1) {
         return QString();
     }
 
     return m_data.at(idx).configPage;
 }
 
 void StylesModel::load()
 {
     beginResetModel();
 
     const int oldCount = m_data.count();
 
     m_data.clear();
 
     // Combines the info we get from QStyleFactory and our themerc files
     QHash<QString, StylesModelData> styleData;
 
     const QStringList allStyles = QStyleFactory::keys();
     for (const QString &styleName : allStyles) {
         auto &item = styleData[styleName];
         item.styleName = styleName;
     }
 
     QStringList themeFiles;
 
     const QStringList themeDirs =
         QStandardPaths::locateAll(QStandardPaths::GenericDataLocation, QStringLiteral("kstyle/themes"), QStandardPaths::LocateDirectory);
     for (const QString &dir : themeDirs) {
         const QStringList fileNames = QDir(dir).entryList(QStringList{QStringLiteral("*.themerc")});
         for (const QString &file : fileNames) {
             const QString suffixedFileName = QLatin1String("kstyle/themes/") + file;
             if (!themeFiles.contains(suffixedFileName)) {
                 themeFiles.append(suffixedFileName);
             }
         }
     }
 
     std::transform(themeFiles.begin(), themeFiles.end(), themeFiles.begin(), [](const QString &item) {
         return QStandardPaths::locate(QStandardPaths::GenericDataLocation, item);
     });
 
     for (const QString &file : themeFiles) {
         KConfig config(file, KConfig::SimpleConfig);
         if (!config.hasGroup("KDE") || !config.hasGroup("Misc")) {
             continue;
         }
 
         KConfigGroup kdeGroup = config.group("KDE");
 
         const QString styleName = kdeGroup.readEntry("WidgetStyle", QString());
         if (styleName.isEmpty()) {
             continue;
         }
 
         auto it = styleData.find(styleName);
         if (it == styleData.end()) {
             continue;
         }
 
         auto &item = *it;
 
         KConfigGroup desktopEntryGroup = config.group("Desktop Entry");
         if (desktopEntryGroup.readEntry("Hidden", false)) {
             // Don't list hidden styles
             styleData.remove(styleName);
             continue;
         }
 
         KConfigGroup miscGroup = config.group("Misc");
 
         item.display = miscGroup.readEntry("Name");
         item.description = miscGroup.readEntry("Comment");
         item.configPage = miscGroup.readEntry("ConfigPage");
     }
 
     m_data = styleData.values().toVector();
 
     // Sort case-insensitively
     QCollator collator;
     collator.setCaseSensitivity(Qt::CaseInsensitive);
     std::sort(m_data.begin(), m_data.end(), [&collator](const StylesModelData &a, const StylesModelData &b) {
         const QString aDisplay = !a.display.isEmpty() ? a.display : a.styleName;
         const QString bDisplay = !b.display.isEmpty() ? b.display : b.styleName;
         return collator.compare(aDisplay, bDisplay) < 0;
     });
 
     endResetModel();
 
     // an item might have been added before the currently selected one
     if (oldCount != m_data.count()) {
         Q_EMIT selectedStyleIndexChanged();
     }
 }