Gui: Add interface for managing preference packs

src/Gui/PreferencePackManager.h

@@ -94,12 +94,12 @@ namespace Gui {
         void rescan();
 
         /**
-         * Get an alphabetical list of names of all installed PreferencePacks
+         * Get an alphabetical list of names of all visible PreferencePacks
          */
         std::vector<std::string> preferencePackNames() const;
 
         /**
-         * Get a map of all installed PreferencePack names and their associated packs
+         * Get a map of all visible PreferencePack names and their associated packs
          */
         std::map<std::string, PreferencePack> preferencePacks() const;
 
@@ -109,6 +109,25 @@ namespace Gui {
          */
         bool apply(const std::string& preferencePackName) const;
 
+        /**
+         * Check the visibility of the specified pack
+         * \return True if the preferencePack is visible, or false if not. All packs are visible by default,
+         * but can be marked as "invisible" (i.e. not returned by the manager in lists of packs) by using the
+         * toggleVisibility function.
+         */
+        bool isVisible(const std::string& addonName, const std::string& preferencePackName) const;
+
+        /**
+         * Toggle the visibility of the named preference pack in a named addon
+         */
+        void toggleVisibility(const std::string& addonName, const std::string& preferencePackName);
+
+        /**
+         * Deletes the user-saved pack specified by name
+         */
+        void deleteUserPack(const std::string& name);
+
+
         /**
          * \struct TemplateFile A file containing a set of preferences that can be saved into 
          * a PreferencePack