First pass on tracking changed properties/assets since initialization

include/openspace/engine/openspaceengine.h

@@ -76,6 +76,7 @@ public:
         const glm::mat4& projectionMatrix);
     void drawOverlays();
     void postDraw();
+    void resetPropertyChangeFlags();
     void keyboardCallback(Key key, KeyModifier mod, KeyAction action);
     void charCallback(unsigned int codepoint, KeyModifier modifier);
     void mouseButtonCallback(MouseButton button, MouseAction action, KeyModifier mods);

include/openspace/properties/property.h

@@ -495,6 +495,11 @@ public:
      */
     virtual std::string generateAdditionalJsonDescription() const;
 
+    /**
+     * Reset the valChanged flag to an unchanged state, as if value has not been changed.
+     */
+    void resetToUnchanged();
+
 protected:
     static const char* IdentifierKey;
     static const char* NameKey;
@@ -531,6 +536,9 @@ protected:
     /// The callback function sthat will be invoked whenever the value changes
     std::vector<std::pair<OnDeleteHandle, std::function<void()>>> _onDeleteCallbacks;
 
+    /// Flag indicating that this property value has been changed after initialization
+    bool valChanged = false;
+
 private:
     void notifyDeleteListeners();
 

include/openspace/properties/templateproperty.inl

@@ -176,6 +176,7 @@ void openspace::properties::TemplateProperty<T>::setValue(T val) {
     if (val != _value) {
         _value = std::move(val);
         notifyChangeListeners();
+        valChanged = true;
     }
 }
 
@@ -196,6 +197,7 @@ void TemplateProperty<T>::set(std::any value) {
     if (v != _value) {
         _value = std::move(v);
         notifyChangeListeners();
+        valChanged = true;
     }
 }
 

include/openspace/scene/assetloader.h

@@ -226,6 +226,9 @@ private:
     std::unordered_map<Asset*, std::map<Asset*, std::vector<int>>>
         _onDependencyDeinitializationFunctionRefs;
     int _assetsTableRef;
+
+    std::vector<std::string> profileAssetsAdded;
+    std::vector<std::string> profileAssetsRemoved;
 };
 
 } // namespace openspace