Added event listener 'attributes'.

NuiCpp · Oct 22, 2023 · d99b7ef · d99b7ef
1 parent e9bfa9e
commit d99b7ef
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diff --git a/nui/include/nui/frontend/attributes/impl/attribute_factory.hpp b/nui/include/nui/frontend/attributes/impl/attribute_factory.hpp
@@ -336,6 +336,52 @@ namespace Nui::Attributes
         char const* name_;
     };
 
+    class EventFactory
+    {
+      public:
+        explicit constexpr EventFactory(char const* name)
+            : name_{name}
+        {}
+
+        // Dont use this class like a value
+        EventFactory(EventFactory const&) = delete;
+        EventFactory(EventFactory&&) = delete;
+        EventFactory& operator=(EventFactory const&) = delete;
+        EventFactory& operator=(EventFactory&&) = delete;
+
+        constexpr char const* name() const
+        {
+            return name_;
+        };
+
+        Attribute operator=(std::function<void()> func) const
+        {
+            return Attribute{
+                [name = name(), func = std::move(func)](Dom::ChildlessElement& element) {
+                    element.addEventListener(name, [func](Nui::val) {
+                        func();
+                        globalEventContext.executeActiveEventsImmediately();
+                    });
+                },
+            };
+        }
+
+        Attribute operator=(std::function<void(Nui::val)> func) const
+        {
+            return Attribute{
+                [name = name(), func = std::move(func)](Dom::ChildlessElement& element) {
+                    element.addEventListener(name, [func](Nui::val val) {
+                        func(std::move(val));
+                        globalEventContext.executeActiveEventsImmediately();
+                    });
+                },
+            };
+        }
+
+      private:
+        char const* name_;
+    };
+
     inline namespace Literals
     {
         constexpr AttributeFactory operator""_attr(char const* name, std::size_t)
@@ -346,6 +392,10 @@ namespace Nui::Attributes
         {
             return PropertyFactory{name};
         }
+        constexpr EventFactory operator""_event(char const* name, std::size_t)
+        {
+            return EventFactory{name};
+        }
     }
 }
 

diff --git a/nui/include/nui/frontend/dom/childless_element.hpp b/nui/include/nui/frontend/dom/childless_element.hpp
@@ -78,6 +78,12 @@ namespace Nui::Dom
             element_.set(Nui::val{std::string{key}}, Nui::val{static_cast<double>(value)});
         }
 
+        void addEventListener(std::string_view event, std::invocable<Nui::val> auto&& callback)
+        {
+            element_.call<void>(
+                "addEventListener", Nui::val{std::string{event}}, Nui::bind(callback, std::placeholders::_1));
+        }
+
         // TODO: more overloads?
         void setAttribute(std::string_view key, std::string const& value)
         {