Added 'title' diagram property

src/common/generators/mermaid/generator.h

@@ -136,6 +136,16 @@ public:
      */
     void generate_metadata(std::ostream &ostr) const;
 
+    /**
+     * @brief Generate diagram title
+     *
+     * Generates a MermaidJS diagram title directive if diagram title
+     * is provided in the diagram configuration.
+     *
+     * @param ostr Output stream
+     */
+    void generate_title(std::ostream &ostr) const;
+
     /**
      * @brief Generate hyper link to element
      *
@@ -238,6 +248,8 @@ void generator<C, D>::generate(std::ostream &ostr) const
 
     update_context();
 
+    generate_title(ostr);
+
     generate_diagram_type(ostr);
 
     generate_mermaid_directives(ostr, config.mermaid().before);
@@ -399,6 +411,18 @@ void generator<C, D>::generate_metadata(std::ostream &ostr) const
     }
 }
 
+template <typename C, typename D>
+void generator<C, D>::generate_title(std::ostream &ostr) const
+{
+    const auto &config = generators::generator<C, D>::config();
+
+    if (config.title) {
+        ostr << "---\n";
+        ostr << "title: " << config.title() << '\n';
+        ostr << "---\n";
+    }
+}
+
 template <typename C, typename D>
 void generator<C, D>::print_debug(
     const common::model::source_location &e, std::ostream &ostr) const