input.add_callback

src/util/RunnablesList.hpp

@@ -0,0 +1,32 @@
+#ifndef UTIL_RUNNABLES_LIST_HPP_
+#define UTIL_RUNNABLES_LIST_HPP_
+
+#include "../typedefs.h"
+#include "../delegates.h"
+
+#include <memory>
+#include <unordered_map>
+
+namespace util {
+    class RunnablesList {
+        int nextid = 1;
+        std::unordered_map<int, runnable> runnables;
+    public:
+        observer_handler add(runnable callback) {
+            int id = nextid++;
+            runnables[id] = callback;
+            return observer_handler(new int(id), [this](int* id) {
+                runnables.erase(*id);
+                delete id;
+            });
+        }
+
+        void notify() {
+            for (auto& entry : runnables) {
+                entry.second();
+            }
+        }
+    };
+}
+
+#endif // UTIL_RUNNABLES_LIST_HPP_