Support for a startup configuration

The --config <configuration> (-c for short) command line option can be
used  to  select  an  existing  configuration  at  start  up.  If  the
configuration does not exist the last configuration used is selected.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7567 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

MultiSettings.cpp

@@ -144,7 +144,7 @@ class MultiSettings::impl final
   Q_OBJECT
 
 public:
-  explicit impl (MultiSettings const * parent);
+  explicit impl (MultiSettings const * parent, QString const& config_name);
   bool reposition ();
   void create_menu_actions (QMainWindow * main_window, QMenu * menu);
   bool exit ();
@@ -201,8 +201,8 @@ private:
 #include "MultiSettings.moc"
 #include "moc_MultiSettings.cpp"
 
-MultiSettings::MultiSettings ()
+MultiSettings::MultiSettings (QString const& config_name)
-  : m_ {this}
+  : m_ {this, config_name}
 {
 }
 
@@ -263,7 +263,7 @@ bool MultiSettings::exit ()
   return m_->exit ();
 }
 
-MultiSettings::impl::impl (MultiSettings const * parent)
+MultiSettings::impl::impl (MultiSettings const * parent, QString const& config_name)
   : settings_ {settings_path (), QSettings::IniFormat}
   , parent_ {parent}
   , name_change_emit_pending_ {true}
@@ -303,15 +303,33 @@ MultiSettings::impl::impl (MultiSettings const * parent)
     }
 
   // bootstrap
+  QStringList available_configurations;
   {
     SettingsGroup alternatives {&settings_, multi_settings_root_group};
+    available_configurations = settings_.childGroups ();
+    // use last selected configuration
     current_ = settings_.value (multi_settings_current_name_key).toString ();
     if (!current_.size ())
       {
+        // no configurations so use default name
         current_ = tr (default_string);
         settings_.setValue (multi_settings_current_name_key, current_);
       }
   }
+
+  if (config_name.size () && available_configurations.contains (config_name) && config_name != current_)
+    {
+      // switch to specified configuration
+      {
+        SettingsGroup alternatives {&settings_, multi_settings_root_group};
+        // save the target settings
+        SettingsGroup target_group {&settings_, config_name};
+        new_settings_ = get_settings ();
+      }
+      current_ = config_name;
+      reposition_type_ = RepositionType::save_and_replace;
+      reposition ();
+    }
   settings_.sync ();
 }
 
@@ -394,9 +412,8 @@ void MultiSettings::impl::create_menu_actions (QMainWindow * main_window, QMenu
   // and set as the current configuration
   default_menu->menuAction ()->setChecked (true);
 
-  QStringList available_configurations;
   // get the existing alternatives
-  available_configurations = settings_.childGroups ();
+  auto const& available_configurations {settings_.childGroups ()};
 
   // add all the other configurations
   for (auto const& configuration_name: available_configurations)

MultiSettings.hpp

@@ -3,13 +3,13 @@
 
 #include <QObject>
 #include <QVariant>
+#include <QString>
 
 #include "pimpl_h.hpp"
 
 class QSettings;
 class QMainWindow;
 class QMenu;
-class QString;
 
 //
 // MultiSettings - Manage multiple configuration names
@@ -65,7 +65,11 @@ class MultiSettings
   Q_OBJECT
 
 public:
-  explicit MultiSettings ();
+  // config_name will be  selected if it is  an existing configuration
+  // name otherwise  the last used  configuration will be  selected or
+  // the default configuration if none exist
+  explicit MultiSettings (QString const& config_name = QString {});
+
   MultiSettings (MultiSettings const&) = delete;
   MultiSettings& operator = (MultiSettings const&) = delete;
   ~MultiSettings ();

main.cpp

@@ -110,7 +110,7 @@ int main(int argc, char *argv[])
 
 #if QT_VERSION >= 0x050200
       QCommandLineParser parser;
-      parser.setApplicationDescription ("\nJT65A & JT9 Weak Signal Communications Program.");
+      parser.setApplicationDescription ("\nJT65, JT9, JT4, MSK144, QRA64, ISCAT & WSPR Weak Signal Communications Program.");
       auto help_option = parser.addHelpOption ();
       auto version_option = parser.addVersionOption ();
 
@@ -120,6 +120,12 @@ int main(int argc, char *argv[])
                                      , a.translate ("main", "rig-name"));
       parser.addOption (rig_option);
 
+      // support for start up configuration
+      QCommandLineOption cfg_option (QStringList {} << "c" << "config"
+                                     , a.translate ("main", "Where <configuration> is an existing one.")
+                                     , a.translate ("main", "configuration"));
+      parser.addOption (cfg_option);
+
       QCommandLineOption test_option (QStringList {} << "test-mode"
                                       , a.translate ("main", "Writable files in test location.  Use with caution, for testing only."));
       parser.addOption (test_option);
@@ -168,8 +174,9 @@ int main(int argc, char *argv[])
 
           multiple = true;
         }
+
       // now we have the application name we can open the settings
-      MultiSettings multi_settings;
+      MultiSettings multi_settings {parser.value (cfg_option)};
 
       // find the temporary files path
       QDir temp_dir {QStandardPaths::writableLocation (QStandardPaths::TempLocation)};