File indexing completed on 2024-10-06 12:16:52

 /*
     SPDX-FileCopyrightText: 1999-2003 Hans Petter Bieker <bieker@kde.org>
     SPDX-FileCopyrightText: 2007 David Jarvie <djarvie@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "klanguagebutton.h"
 
 #include <QDir>
 #include <QFile>
 #include <QHBoxLayout>
 #include <QLocale>
 #include <QMenu>
 #include <QPushButton>
 
 #include <KConfig>
 #include <KConfigGroup>
 
 static void checkInsertPos(QMenu *popup, const QString &str, int &index)
 {
     if (index != -1) {
         return;
     }
 
     int a = 0;
     const QList<QAction *> actions = popup->actions();
     int b = actions.count();
 
     while (a < b) {
         int w = (a + b) / 2;
         QAction *ac = actions[w];
         int j = str.localeAwareCompare(ac->text());
         if (j > 0) {
             a = w + 1;
         } else {
             b = w;
         }
     }
 
     index = a; // it doesn't really matter ... a == b here.
 
     Q_ASSERT(a == b);
 }
 
 class KLanguageButtonPrivate
 {
 public:
     explicit KLanguageButtonPrivate(KLanguageButton *parent);
     ~KLanguageButtonPrivate()
     {
         delete button;
         delete popup;
     }
     void setCurrentItem(QAction *);
     void clear();
     QAction *findAction(const QString &data) const;
 
     QPushButton *button = nullptr;
     QStringList ids;
     QMenu *popup = nullptr;
     QString current;
     QString locale;
     bool staticText : 1;
     bool showCodes : 1;
 };
 
 KLanguageButton::KLanguageButton(QWidget *parent)
     : QWidget(parent)
     , d(new KLanguageButtonPrivate(this))
 {
 }
 
 KLanguageButton::KLanguageButton(const QString &text, QWidget *parent)
     : QWidget(parent)
     , d(new KLanguageButtonPrivate(this))
 {
     setText(text);
 }
 
 KLanguageButtonPrivate::KLanguageButtonPrivate(KLanguageButton *parent)
     : button(new QPushButton(parent))
     , popup(new QMenu(parent))
     , locale(QLocale::system().name())
     , staticText(false)
     , showCodes(false)
 {
     QHBoxLayout *layout = new QHBoxLayout(parent);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->addWidget(button);
 
     parent->setFocusProxy(button);
     parent->setFocusPolicy(button->focusPolicy());
 
     button->setMenu(popup);
 
     QObject::connect(popup, &QMenu::triggered, parent, &KLanguageButton::slotTriggered);
     QObject::connect(popup, &QMenu::hovered, parent, &KLanguageButton::slotHovered);
 }
 
 KLanguageButton::~KLanguageButton() = default;
 
 void KLanguageButton::setText(const QString &text)
 {
     d->staticText = true;
     d->button->setText(text);
 }
 
 void KLanguageButton::setLocale(const QString &locale)
 {
     d->locale = locale;
 }
 
 void KLanguageButton::showLanguageCodes(bool show)
 {
     d->showCodes = show;
 }
 
 static QString nameFromEntryFile(const QString &entryFile)
 {
     const KConfig entry(entryFile, KConfig::SimpleConfig);
     const KConfigGroup group(&entry, "KCM Locale");
     return group.readEntry("Name", QString());
 }
 
 void KLanguageButton::insertLanguage(const QString &languageCode, const QString &name, int index)
 {
     QString text;
     bool showCodes = d->showCodes;
     if (name.isEmpty()) {
         const QString entryFile =
             QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1String("locale/") + languageCode + QLatin1String("/kf5_entry.desktop"));
         if (QFile::exists(entryFile)) {
             text = nameFromEntryFile(entryFile);
         }
 
         if (text.isEmpty()) {
             text = languageCode;
             QLocale locale(languageCode);
             if (locale != QLocale::c()) {
                 text = locale.nativeLanguageName();
                 // For some languages the native name might be empty.
                 // In this case use the non native language name as fallback.
                 // See: QTBUG-51323
                 text = text.isEmpty() ? QLocale::languageToString(locale.language()) : text;
             } else {
                 showCodes = false;
             }
         }
     } else {
         text = name;
     }
     if (showCodes) {
         text += QLatin1String(" (") + languageCode + QLatin1Char(')');
     }
 
     checkInsertPos(d->popup, text, index);
     QAction *a = new QAction(QIcon(), text, this);
     a->setData(languageCode);
     if (index >= 0 && index < d->popup->actions().count() - 1) {
         d->popup->insertAction(d->popup->actions()[index], a);
     } else {
         d->popup->addAction(a);
     }
     d->ids.append(languageCode);
 }
 
 void KLanguageButton::insertSeparator(int index)
 {
     if (index >= 0 && index < d->popup->actions().count() - 1) {
         d->popup->insertSeparator(d->popup->actions()[index]);
     } else {
         d->popup->addSeparator();
     }
 }
 
 void KLanguageButton::loadAllLanguages()
 {
     const QStringList localeDirs = QStandardPaths::locateAll(QStandardPaths::GenericDataLocation, QStringLiteral("locale"), QStandardPaths::LocateDirectory);
     for (const QString &localeDir : localeDirs) {
         const QStringList entries = QDir(localeDir).entryList(QDir::Dirs, QDir::Name);
         for (const QString &d : entries) {
             const QString entryFile = localeDir + QLatin1Char('/') + d + QStringLiteral("/kf5_entry.desktop");
             if (QFile::exists(entryFile)) {
                 insertLanguage(d);
             }
         }
     }
 
     d->ids.removeDuplicates();
     setCurrentItem(d->locale);
 }
 
 void KLanguageButton::slotTriggered(QAction *a)
 {
     // qCDebug(KCONFIG_WIDGETS_LOG) << "slotTriggered" << index;
     if (!a) {
         return;
     }
 
     d->setCurrentItem(a);
 
     // Forward event from popup menu as if it was emitted from this widget:
     Q_EMIT activated(d->current);
 }
 
 void KLanguageButton::slotHovered(QAction *a)
 {
     // qCDebug(KCONFIG_WIDGETS_LOG) << "slotHovered" << index;
 
     Q_EMIT highlighted(a->data().toString());
 }
 
 int KLanguageButton::count() const
 {
     return d->ids.count();
 }
 
 void KLanguageButton::clear()
 {
     d->clear();
 }
 
 void KLanguageButtonPrivate::clear()
 {
     ids.clear();
     popup->clear();
 
     if (!staticText) {
         button->setText(QString());
     }
 }
 
 bool KLanguageButton::contains(const QString &languageCode) const
 {
     return d->ids.contains(languageCode);
 }
 
 QString KLanguageButton::current() const
 {
     return d->current.isEmpty() ? QStringLiteral("en") : d->current;
 }
 
 QAction *KLanguageButtonPrivate::findAction(const QString &data) const
 {
     const auto listActions = popup->actions();
     for (QAction *a : listActions) {
         if (!a->data().toString().compare(data)) {
             return a;
         }
     }
     return nullptr;
 }
 
 void KLanguageButton::setCurrentItem(const QString &languageCode)
 {
     if (d->ids.isEmpty()) {
         return;
     }
     QAction *a;
     if (d->ids.indexOf(languageCode) < 0) {
         a = d->findAction(d->ids[0]);
     } else {
         a = d->findAction(languageCode);
     }
     if (a) {
         d->setCurrentItem(a);
     }
 }
 
 void KLanguageButtonPrivate::setCurrentItem(QAction *a)
 {
     if (!a->data().isValid()) {
         return;
     }
     current = a->data().toString();
 
     if (!staticText) {
         button->setText(a->text());
     }
 }
 
 #include "moc_klanguagebutton.cpp"