add remote page loading

src/node.h

@@ -97,6 +97,7 @@ enum class kWidget : uint16_t
     UserManual = const_hash("usermanual"),
     ToolBucket = const_hash("tool-bucket"),
     Timeline   = const_hash("timeline"),
+    Metadata   = const_hash("metadata"),
 };
 
 class Node : public std::enable_shared_from_this<Node>
@@ -143,6 +144,9 @@ public:
     // it's actually rendering
     bool m_on_screen = false;
 
+    bool auto_width = true;
+    bool auto_height = true;
+
     Node(const Node&) = delete;
     Node& operator=(const Node&) = delete;
     Node&& operator=(Node&& o);
@@ -279,6 +283,15 @@ public:
         }
         return nullptr;
     }
+    template<class T = Node> std::shared_ptr<T> add_child_xml(const std::string& xml_string, const std::string& name)
+    {
+        if (auto t = parse_template(xml_string, name))
+        {
+            add_child(t);
+            return std::dynamic_pointer_cast<T>(t);
+        }
+        return nullptr;
+    }
 
     virtual void on_tick(float dt) { };
     virtual kEventResult on_event(Event* e);
@@ -296,6 +309,7 @@ public:
     const Node* init_template(const char* id);
     bool init_template_file(const std::string& path, const std::string& id);
     std::shared_ptr<Node> load_template(const std::string& filename, const std::string& name) const;
+    std::shared_ptr<Node> parse_template(const std::string& xml_stirng, const std::string& name) const;
     void tick(float dt);
     void app_redraw();
     void add_child(Node* n);