options: fix 2 issues

1. Calling valueChanged didn't invoke machinery in
   value<t>, only base_value aka value_.

   There's a fast path in value<t>::type() despite the
   pessimization.

2. Split global scope stuff into options::globals from
   the options::globals stuff

3. Adjust usages

3 files changed, 13 insertions, 11 deletions

diff --git a/gui/init.cpp b/gui/init.cpp
index 0e9d746a..1a4666b5 100644
--- a/gui/init.cpp
+++ b/gui/init.cpp
@@ -213,7 +213,7 @@ OTR_GUI_EXPORT int otr_main(int argc, char** argv, std::function<QWidget*()> con
             qDebug() << "locale:" << forced_locale;
         }
 
-        const bool no_i18n = group::with_global_settings_object([](QSettings& s) {
+        const bool no_i18n = options::globals::with_global_settings_object([](QSettings& s) {
             return s.value("disable-translation", false).toBool();
         });
 
diff --git a/gui/process_detector.cpp b/gui/process_detector.cpp
index 969b1856..0ff05f93 100644
--- a/gui/process_detector.cpp
+++ b/gui/process_detector.cpp
@@ -24,31 +24,32 @@ static constexpr inline auto RECORD_SEPARATOR = QChar(char(0x1e));  // RS ^]
 static constexpr inline auto UNIT_SEPARATOR = QChar(char(0x1f));    // US ^_
 
 using namespace options;
+using namespace options::globals;
 
 void proc_detector_settings::set_game_list(const QString &game_list)
 {
-    group::with_global_settings_object([&](QSettings& settings) {
+    with_global_settings_object([&](QSettings& settings) {
         settings.setValue("executable-list", game_list);
     });
 }
 
 QString proc_detector_settings::get_game_list()
 {
-    return group::with_global_settings_object([&](QSettings& settings) {
+    return with_global_settings_object([&](QSettings& settings) {
         return settings.value("executable-list").toString();
     });
 }
 
 bool proc_detector_settings::is_enabled()
 {
-    return group::with_global_settings_object([&](QSettings& settings) {
+    return with_global_settings_object([&](QSettings& settings) {
         return settings.value("executable-detector-enabled", false).toBool();
     });
 }
 
 void proc_detector_settings::set_is_enabled(bool enabled)
 {
-    group::with_global_settings_object([&](QSettings& settings) {
+    with_global_settings_object([&](QSettings& settings) {
         settings.setValue("executable-detector-enabled", enabled);
     });
 }
@@ -76,7 +77,7 @@ QHash<QString, QString> proc_detector_settings::split_process_names()
 
 void BrowseButton::browse()
 {
-    QString dir_path = QFileInfo(group::ini_pathname()).absolutePath();
+    QString dir_path = QFileInfo(ini_pathname()).absolutePath();
     QString filename = QFileDialog::getOpenFileName(
                            this,
                            tr("Set executable name"),
@@ -96,7 +97,7 @@ int process_detector::add_row(QString const& exe_name, QString const& profile)
     QComboBox* cb = new QComboBox();
     cb->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Maximum);
     cb->addItem("");
-    cb->addItems(group::ini_list());
+    cb->addItems(ini_list());
     ui.tableWidget->setCellWidget(i, 1, cb);
 
     QTableWidgetItem* twi = new QTableWidgetItem(exe_name);
diff --git a/gui/settings.cpp b/gui/settings.cpp
index 31bbd87b..5ee59260 100644
--- a/gui/settings.cpp
+++ b/gui/settings.cpp
@@ -18,10 +18,11 @@
 #include <QFileDialog>
 
 using namespace options;
+using namespace options::globals;
 
 QString options_dialog::kopts_to_string(const key_opts& kopts)
 {
-    if (static_cast<QString>(kopts.guid) != "")
+    if (!kopts.guid->isEmpty())
     {
         const int btn = kopts.button & ~Qt::KeyboardModifierMask;
         const int mods = kopts.button & Qt::KeyboardModifierMask;
@@ -31,14 +32,14 @@ QString options_dialog::kopts_to_string(const key_opts& kopts)
         if (mods & Qt::ShiftModifier) mm += "Shift+";
         return mm + tr("Joy button %1").arg(QString::number(btn));
     }
-    if (static_cast<QString>(kopts.keycode) == "")
+    if (kopts.keycode->isEmpty())
         return tr("None");
     return kopts.keycode;
 }
 
 void options_dialog::set_disable_translation_state(bool value)
 {
-    group::with_global_settings_object([&](QSettings& s)
+    with_global_settings_object([&](QSettings& s)
     {
         s.setValue("disable-translation", value);
     });
@@ -105,7 +106,7 @@ options_dialog::options_dialog(std::function<void(bool)>&& pause_keybindings) :
 
     tie_setting(main.neck_enable, ui.neck_enable);
 
-    const bool is_translation_disabled = group::with_global_settings_object([] (QSettings& s) {
+    const bool is_translation_disabled = with_global_settings_object([] (QSettings& s) {
         return s.value("disable-translation", false).toBool();
     });
     ui.disable_translation->setChecked(is_translation_disabled);