add 'onrightclick' uinode event

src/graphics/ui/elements/Container.cpp

@@ -177,6 +177,7 @@ void Container::add(const std::shared_ptr<UINode>& node) {
         parent->setMustRefresh();
         parent = parent->getParent();
     }
+    gui.getWindow().setShouldRefresh();
 }
 
 void Container::add(const std::shared_ptr<UINode>& node, glm::vec2 pos) {

src/graphics/ui/elements/UINode.cpp

@@ -69,6 +69,11 @@ UINode* UINode::listenAction(const onaction& action) {
     return this;
 }
 
+UINode* UINode::listenRightClick(const onaction& action) {
+    rightClickCallbacks.listen(action);
+    return this;
+}
+
 UINode* UINode::listenDoubleClick(const onaction& action) {
     doubleClickCallbacks.listen(action);
     return this;
@@ -88,6 +93,12 @@ void UINode::click(int, int) {
     pressed = true;
 }
 
+void UINode::clicked(Mousecode button) {
+    if (button == Mousecode::BUTTON_2) {
+        rightClickCallbacks.notify(gui);
+    }
+}
+
 void UINode::doubleClick(int x, int y) {
     pressed = true;
     if (isInside(glm::vec2(x, y))) {

src/graphics/ui/elements/UINode.hpp

@@ -121,6 +121,8 @@ namespace gui {
         vec2supplier sizefunc = nullptr;
         /// @brief 'onclick' callbacks
         ActionsSet actions;
+        /// @brief 'onrightclick' callbacks
+        ActionsSet rightClickCallbacks;
         /// @brief 'ondoubleclick' callbacks
         ActionsSet doubleClickCallbacks;
         /// @brief 'onfocus' callbacks
@@ -188,6 +190,7 @@ namespace gui {
         int getZIndex() const;
 
         virtual UINode* listenAction(const onaction& action);
+        virtual UINode* listenRightClick(const onaction& action);
         virtual UINode* listenDoubleClick(const onaction& action);
         virtual UINode* listenFocus(const onaction& action);
         virtual UINode* listenDefocus(const onaction& action);
@@ -195,7 +198,7 @@ namespace gui {
         virtual void onFocus();
         virtual void doubleClick(int x, int y);
         virtual void click(int x, int y);
-        virtual void clicked(Mousecode button) {}
+        virtual void clicked(Mousecode button);
         virtual void mouseMove(int x, int y) {};
         virtual void mouseRelease(int x, int y);
         virtual void scrolled(int value);

src/graphics/ui/gui_xml.cpp

@@ -181,6 +181,10 @@ static void read_uinode(
         node.listenAction(onclick);
     }
 
+    if (auto onclick = create_action(reader, element, "onrightclick")) {
+        node.listenRightClick(onclick);
+    }
+
     if (auto onfocus = create_action(reader, element, "onfocus")) {
         node.listenFocus(onfocus);
     }