From eb8cdee237562e954e8c87c5eb9999cee9293e49 Mon Sep 17 00:00:00 2001
From: marcelb <marcelb@bitelex.ml>
Date: Sun, 24 Nov 2024 20:26:13 +0100
Subject: [PATCH] Example of implement multi trigger in class

---
 README.md     | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 test/test.cpp | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 98 insertions(+)

diff --git a/README.md b/README.md
index 08991a9..900a4b9 100644
--- a/README.md
+++ b/README.md
@@ -329,6 +329,55 @@ myclass.on("constructed", [] (int i) {
 
 ```
 
+Implementing a class with multiple triggers of different types
+
+```c++
+
+class ClassWithTriggers {
+    trigger<int> emitter1;
+    trigger<string> emitter2;
+
+public:
+    template<typename... T>
+    void on(const string& key, function<void(T...)> callback) {
+        if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, int>) {
+            emitter1.on(key, callback);
+        }
+        else if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, string>) {
+            emitter2.on(key, callback);
+        }
+    }
+
+    template <typename... Args>
+    void tick(const string& key, Args&&... args) {
+        if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, int>) {
+            emitter1.tick(key, forward<Args>(args)...);
+        }
+        else if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, string>) {
+            emitter2.tick(key, forward<Args>(args)...);
+        }
+        else {
+            static_assert(sizeof...(Args) == 0, "Unsupported number or types of arguments");
+        }
+    }
+};
+
+ClassWithTriggers mt;
+
+mt.on<int>("int", function<void(int)>([&](int i) {
+    cout << "Emit int " << i << endl;
+}));
+
+mt.on<string>("string", function<void(string)>([&](string s) {
+    cout << "Emit string " << s << endl;
+}));
+
+mt.tick("int", 5);
+mt.tick("string", string("Hello world"));
+
+```
+
+
 Asynchronous file IO
 
 ```c++
diff --git a/test/test.cpp b/test/test.cpp
index 779dd37..43e284f 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -62,6 +62,37 @@ class myOwnClass : public trigger<int> {
     myOwnClass() : trigger() {};
 };
 
+// ----------------- MULTIPLE TRIGGERS IN ONE CLASS ------------------
+
+class ClassWithTriggers {
+    trigger<int> emitter1;
+    trigger<string> emitter2;
+
+public:
+    template<typename... T>
+    void on(const string& key, function<void(T...)> callback) {
+        if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, int>) {
+            emitter1.on(key, callback);
+        }
+        else if constexpr (sizeof...(T) == 1 && is_same_v<tuple_element_t<0, tuple<T...>>, string>) {
+            emitter2.on(key, callback);
+        }
+    }
+
+    template <typename... Args>
+    void tick(const string& key, Args&&... args) {
+        if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, int>) {
+            emitter1.tick(key, forward<Args>(args)...);
+        }
+        else if constexpr (sizeof...(Args) == 1 && is_same_v<tuple_element_t<0, tuple<Args...>>, string>) {
+            emitter2.tick(key, forward<Args>(args)...);
+        }
+        else {
+            static_assert(sizeof...(Args) == 0, "Unsupported number or types of arguments");
+        }
+    }
+};
+
 
 int main () {
 
@@ -367,6 +398,24 @@ int main () {
     //     cout << "Constructed " << i  << endl;
     // });
 
+    // /**
+    //  * 
+    //  * Use class with multiple triggers
+    //  * 
+    //  */
+
+    ClassWithTriggers mt;
+
+    mt.on<int>("int", function<void(int)>([&](int i) {
+        cout << "Emit int " << i << endl;
+    }));
+
+    mt.on<string>("string", function<void(string)>([&](string s) {
+        cout << "Emit string " << s << endl;
+    }));
+
+    mt.tick("int", 5);
+    mt.tick("string", string("Hello world"));
 
 
     // auto status = fs::read("test1.txt");