add support for migrations

They're run from the UI thread so can even be interactive.

4 files changed, 17 insertions, 8 deletions

diff --git a/options/bundle.cpp b/options/bundle.cpp
index 48689720..61be509a 100644
--- a/options/bundle.cpp
+++ b/options/bundle.cpp
@@ -16,6 +16,10 @@ bundle::bundle(const QString& group_name)
 {
 }
 
+bundle::~bundle()
+{
+}
+
 void bundle::reload()
 {
     if (group_name.size())
@@ -114,7 +118,7 @@ void bundler::bundle_decf(const bundler::k& key)
 
     if (--std::get<0>(implsgl_data[key]) == 0)
     {
-        qDebug() << "bundle -" << key;
+        //qDebug() << "bundle -" << key;
 
         implsgl_data.erase(key);
     }
@@ -132,7 +136,7 @@ void bundler::after_profile_changed_()
         mem<v> bundle_ = bundle.lock();
         if (bundle_)
         {
-            qDebug() << "bundle: reverting" << kv.first << "due to profile change";
+            //qDebug() << "bundle: reverting" << kv.first << "due to profile change";
             bundle_->reload();
         }
     }
@@ -163,7 +167,7 @@ std::shared_ptr<bundler::v> bundler::make_bundle(const bundler::k &key)
             return shared;
     }
 
-    qDebug() << "bundle +" << key;
+    //qDebug() << "bundle +" << key;
 
     std::shared_ptr<v> shr(new v(key), [this](v* val) { bundle_decf(val->name()); });
 
diff --git a/options/bundle.hpp b/options/bundle.hpp
index 20ec9eaa..3d75a8de 100644
--- a/options/bundle.hpp
+++ b/options/bundle.hpp
@@ -24,6 +24,8 @@ namespace options {
 
 namespace detail {
 
+struct bundler;
+
 class OPENTRACK_OPTIONS_EXPORT bundle final : public QObject, public virtual connector
 {
     class OPENTRACK_OPTIONS_EXPORT mutex final : public QMutex
@@ -35,6 +37,8 @@ class OPENTRACK_OPTIONS_EXPORT bundle final : public QObject, public virtual con
 
     Q_OBJECT
 private:
+    friend bundler;
+
     mutex mtx;
     const QString group_name;
     group saved;
@@ -50,7 +54,7 @@ signals:
     void changed() const;
 public:
     bundle(const QString& group_name);
-    ~bundle() override {}
+    ~bundle() override;
     QString name() { return group_name; }
     void reload();
     void store_kv(const QString& name, const QVariant& datum);
diff --git a/options/group.cpp b/options/group.cpp
index a2169ae5..69b79cef 100644
--- a/options/group.cpp
+++ b/options/group.cpp
@@ -72,7 +72,7 @@ QString group::ini_pathname()
     return dir + "/" + ini_filename();
 }
 
-const QStringList group::ini_list()
+QStringList group::ini_list()
 {
     const auto dirname = ini_directory();
     if (dirname == "")
@@ -83,7 +83,7 @@ const QStringList group::ini_list()
     return list;
 }
 
-const std::shared_ptr<QSettings> group::ini_file()
+std::shared_ptr<QSettings> group::ini_file()
 {
     const auto pathname = ini_pathname();
     if (pathname != "")
diff --git a/options/group.hpp b/options/group.hpp
index f76978ad..f5b3e523 100644
--- a/options/group.hpp
+++ b/options/group.hpp
@@ -17,6 +17,7 @@ class OPENTRACK_OPTIONS_EXPORT group final
     QString name;
 public:
     std::map<QString, QVariant> kvs;
+    group(const QString& name, mem<QSettings> s);
     group(const QString& name);
     void save() const;
     void save_deferred(QSettings& s) const;
@@ -25,8 +26,8 @@ public:
     static QString ini_directory();
     static QString ini_filename();
     static QString ini_pathname();
-    static const QStringList ini_list();
-    static const std::shared_ptr<QSettings> ini_file();
+    static QStringList ini_list();
+    static std::shared_ptr<QSettings> ini_file();
 
     template<typename t>
     t get(const QString& k) const