Use QString() for empty strings

GIT_SILENT

containments/desktop/plugins/folder/mimetypesmodel.cpp

@@ -109,7 +109,7 @@ QStringList MimeTypesModel::checkedTypes() const
         return list;
     }
 
-    return QStringList(QLatin1String(""));
+    return QStringList(QString());
 }
 
 void MimeTypesModel::setCheckedTypes(const QStringList &list)

kcms/componentchooser/componentchooser.cpp

@@ -72,7 +72,7 @@ void ComponentChooser::load()
     QVariantMap application;
     application["name"] = i18n("Other…");
     application["icon"] = QStringLiteral("application-x-shellscript");
-    application["storageId"] = QLatin1String("");
+    application["storageId"] = QString();
     m_applications += application;
     if (m_index == -1) {
         m_index = 0;

kcms/componentchooser/componentchooserterminal.cpp

@@ -18,7 +18,7 @@
 
 ComponentChooserTerminal::ComponentChooserTerminal(QObject *parent)
     : ComponentChooser(parent,
-                       QLatin1String(""),
+                       QString(),
                        QStringLiteral("TerminalEmulator"),
                        QStringLiteral("org.kde.konsole.desktop"),
                        i18n("Select default terminal emulator"))
@@ -73,7 +73,7 @@ void ComponentChooserTerminal::load()
     QVariantMap application;
     application["name"] = i18n("Other…");
     application["icon"] = QStringLiteral("application-x-shellscript");
-    application["storageId"] = QLatin1String("");
+    application["storageId"] = QString();
     m_applications += application;
     if (m_index == -1) {
         m_index = 0;

kcms/joystick/caldialog.cpp

@@ -80,7 +80,7 @@ void CalDialog::calibrate()
         else if (i == 1)
             hint = i18n("(usually Y)");
         else
-            hint = QLatin1String("");
+            hint = QString();
 
         // minimum position
         text->setText(

kcms/joystick/joydevice.cpp

@@ -35,7 +35,7 @@ QString JoyDevice::errText(ErrorCode code) const
 {
     switch (code) {
     case SUCCESS:
-        return QLatin1String("");
+        return QString();
 
     case OPEN_FAILED: {
         return i18n("The given device %1 could not be opened: %2", devName, strerror(errno));
@@ -177,7 +177,7 @@ void JoyDevice::close()
     ::close(joyFd);
 
     joyFd = -1;
-    descr = QLatin1String("");
+    descr = QString();
 
     delete[] amin;
     delete[] amax;

kcms/joystick/joywidget.cpp

@@ -204,7 +204,7 @@ void JoyWidget::restoreCurrDev()
 {
     if (!joydev) // no device open
     {
-        device->setEditText(QLatin1String(""));
+        device->setEditText(QString());
         calibrate->setEnabled(false);
     } else {
         // try to find the current open device in the combobox list

kcms/keyboard/kcm_add_layout_dialog.cpp

@@ -109,7 +109,7 @@ void AddLayoutDialog::accept()
 {
     QString label = layoutDialogUi->labelEdit->text();
     if (label == selectedLayout) {
-        label = QLatin1String("");
+        label = QString();
     }
     selectedLayoutUnit.setDisplayName(label);
     selectedLayoutUnit.setShortcut(layoutDialogUi->kkeysequencewidget->keySequence());

kcms/keyboard/layout_memory_persister.cpp

@@ -44,7 +44,7 @@ static bool isDefaultLayoutConfig(const LayoutSet &layout, const QList<LayoutUni
 QString LayoutMemoryPersister::getLayoutMapAsString()
 {
     if (!canPersist())
-        return QLatin1String("");
+        return QString();
 
     QDomDocument doc(DOC_NAME);
     QDomElement root = doc.createElement(ROOT_NODE);
@@ -54,7 +54,7 @@ QString LayoutMemoryPersister::getLayoutMapAsString()
 
     if (layoutMemory.keyboardConfig.switchingPolicy() == KeyboardConfig::SWITCH_POLICY_GLOBAL) {
         if (!globalLayout.isValid())
-            return QLatin1String("");
+            return QString();
 
         QDomElement item = doc.createElement(ITEM_NODE);
         item.setAttribute(CURRENT_LAYOUT_ATTRIBUTE, globalLayout.toString());

kcms/keyboard/x11_helper.cpp

@@ -382,7 +382,7 @@ LayoutUnit::LayoutUnit(const QString &fullLayoutName)
 {
     QStringList lv = fullLayoutName.split(LAYOUT_VARIANT_SEPARATOR_PREFIX);
     m_layout = lv[0];
-    m_variant = lv.size() > 1 ? stripVariantName(lv[1]) : QLatin1String("");
+    m_variant = lv.size() > 1 ? stripVariantName(lv[1]) : QString();
 }
 
 QString LayoutUnit::toString() const

kcms/keyboard/xkb_helper.cpp

@@ -36,14 +36,14 @@ static const QString COMMAND_OPTIONS_SEPARATOR(QStringLiteral(","));
 static QString getSetxkbmapExe()
 {
     if (setxkbmapNotFound)
-        return QLatin1String("");
+        return QString();
 
     if (setxkbmapExe.isEmpty()) {
         setxkbmapExe = QStandardPaths::findExecutable(SETXKBMAP_EXEC);
         if (setxkbmapExe.isEmpty()) {
             setxkbmapNotFound = true;
             qCCritical(KCM_KEYBOARD) << "Can't find" << SETXKBMAP_EXEC << "- keyboard layouts won't be configured";
-            return QLatin1String("");
+            return QString();
         }
     }
     return setxkbmapExe;
@@ -116,7 +116,7 @@ bool XkbHelper::initializeKeyboardLayouts(const QList<LayoutUnit> &layoutUnits)
     QStringList setxkbmapCommandArguments;
     setxkbmapCommandArguments.append(QStringLiteral("-layout"));
     setxkbmapCommandArguments.append(layouts.join(COMMAND_OPTIONS_SEPARATOR));
-    if (!variants.join(QLatin1String("")).isEmpty()) {
+    if (!variants.join(QString()).isEmpty()) {
         setxkbmapCommandArguments.append(QStringLiteral("-variant"));
         setxkbmapCommandArguments.append(variants.join(COMMAND_OPTIONS_SEPARATOR));
     }
@@ -146,7 +146,7 @@ bool XkbHelper::initializeKeyboardLayouts(KeyboardConfig &config)
 
         setxkbmapCommandArguments.append(QStringLiteral("-layout"));
         setxkbmapCommandArguments.append(layouts.join(COMMAND_OPTIONS_SEPARATOR));
-        if (!variants.join(QLatin1String("")).isEmpty()) {
+        if (!variants.join(QString()).isEmpty()) {
             setxkbmapCommandArguments.append(QStringLiteral("-variant"));
             setxkbmapCommandArguments.append(variants.join(COMMAND_OPTIONS_SEPARATOR));
         }

kcms/solid_actions/ActionItem.cpp

@@ -35,7 +35,7 @@ ActionItem::ActionItem(const QString &pathToDesktop, const QString &action, QObj
     configGroups.append(desktopFileWrite->actionGroup(actionName));
     actionGroups.insert(ActionItem::GroupAction, &configGroups.last());
 
-    const QString predicateString = readKey(ActionItem::GroupDesktop, QStringLiteral("X-KDE-Solid-Predicate"), QLatin1String(""));
+    const QString predicateString = readKey(ActionItem::GroupDesktop, QStringLiteral("X-KDE-Solid-Predicate"), QString());
     predicateItem = Solid::Predicate::fromString(predicateString);
 }
 
@@ -54,17 +54,17 @@ bool ActionItem::isUserSupplied() const
 
 QString ActionItem::icon() const
 {
-    return readKey(ActionItem::GroupAction, QStringLiteral("Icon"), QLatin1String(""));
+    return readKey(ActionItem::GroupAction, QStringLiteral("Icon"), QString());
 }
 
 QString ActionItem::exec() const
 {
-    return readKey(ActionItem::GroupAction, QStringLiteral("Exec"), QLatin1String(""));
+    return readKey(ActionItem::GroupAction, QStringLiteral("Exec"), QString());
 }
 
 QString ActionItem::name() const
 {
-    return readKey(ActionItem::GroupAction, QStringLiteral("Name"), QLatin1String(""));
+    return readKey(ActionItem::GroupAction, QStringLiteral("Name"), QString());
 }
 
 Solid::Predicate ActionItem::predicate() const