3 files changed, 50 insertions, 2 deletions
diff --git a/src/organizerproxy.cpp b/src/organizerproxy.cpp
index e0c122a2..e67952d9 100644
--- a/src/organizerproxy.cpp
+++ b/src/organizerproxy.cpp
@@ -3,7 +3,9 @@
 #include "shared/appconfig.h"
 #include "organizercore.h"
 #include "plugincontainer.h"
+#include "settings.h"
 
+#include <QObject>
 #include <QApplication>
 
 using namespace MOBase;
@@ -11,10 +13,17 @@ using namespace MOShared;
 
 
 OrganizerProxy::OrganizerProxy(OrganizerCore *organizer, PluginContainer *pluginContainer, const QString &pluginName)
-  : m_Proxied(organizer)
+  : IOrganizer(organizer)
+  , m_Proxied(organizer)
   , m_PluginContainer(pluginContainer)
   , m_PluginName(pluginName)
 {
+
+  PluginSettings& pluginSettings = m_Proxied->settings().plugins();
+
+  connect(&pluginSettings, &PluginSettings::pluginSettingChanged, [this](auto const& ...args) {
+    emit pluginSettingChanged(args...);
+  });
 }
 
 IModRepositoryBridge *OrganizerProxy::createNexusBridge() const
diff --git a/src/settings.cpp b/src/settings.cpp
index 3bf8f2a2..55283486 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -1310,9 +1310,14 @@ void PluginSettings::setSetting(const QString &pluginName, const QString &key, c
       .arg(pluginName));
   }
 
+  QVariant oldValue = m_PluginSettings[pluginName][key];
+
   // store the new setting both in memory and in the ini
   m_PluginSettings[pluginName][key] = value;
   set(m_Settings, "Plugins", pluginName + "/" + key, value);
+
+  // emit signal:
+  emit pluginSettingChanged(pluginName, key, oldValue, value);
 }
 
 QVariantMap PluginSettings::settings(const QString &pluginName) const
@@ -1322,7 +1327,32 @@ QVariantMap PluginSettings::settings(const QString &pluginName) const
 
 void PluginSettings::setSettings(const QString &pluginName, const QVariantMap& map)
 {
+  auto iterPlugin = m_PluginSettings.find(pluginName);
+
+  if (iterPlugin == m_PluginSettings.end()) {
+    throw MyException(
+      QObject::tr("attempt to store setting for unknown plugin \"%1\"")
+      .arg(pluginName));
+  }
+
+  QVariantMap oldSettings = m_PluginSettings[pluginName];
   m_PluginSettings[pluginName] = map;
+
+  // Emit signals for settings that have been changed or added:
+  for (auto& k : map.keys()) {
+    // .value() return a default-constructed QVariant if k is not in oldSettings:
+    QVariant oldValue = oldSettings.value(k);
+    if (oldValue != map[k]) {
+      emit pluginSettingChanged(pluginName, k, oldSettings.value(k), map[k]);
+    }
+  }
+
+  // Emit signals for settings that have been removed:
+  for (auto& k : oldSettings.keys()) {
+    if (!map.contains(k)) {
+      emit pluginSettingChanged(pluginName, k, oldSettings[k], QVariant());
+    }
+  }
 }
 
 QVariantMap PluginSettings::descriptions(const QString &pluginName) const
diff --git a/src/settings.h b/src/settings.h
index b2cb6be5..9d788664 100644
--- a/src/settings.h
+++ b/src/settings.h
@@ -287,8 +287,10 @@ private:
 
 // settings about plugins
 //
-class PluginSettings
+class PluginSettings: public QObject
 {
+  Q_OBJECT
+
 public:
   PluginSettings(QSettings& settings);
 
@@ -357,6 +359,13 @@ public:
   //
   void save();
 
+Q_SIGNALS:
+
+  /**
+   * Emitted when a plugin setting changes.
+   */
+  void pluginSettingChanged(QString const& pluginName, const QString& key, const QVariant& oldValue, const QVariant& newValue);
+
 private:
   QSettings& m_Settings;
   std::vector<MOBase::IPlugin*> m_Plugins;