diff --git a/include/eepp/core/string.hpp b/include/eepp/core/string.hpp
index 13c3f66ea..c3fcf59c3 100644
--- a/include/eepp/core/string.hpp
+++ b/include/eepp/core/string.hpp
@@ -171,9 +171,15 @@ class EE_API String {
 	/** Replace all occurrences of the search string with the replacement string. */
 	static void replaceAll( std::string &target, const std::string& that, const std::string& with );
 
+	/** Replace all occurrences of the search string with the replacement string. */
+	static void replaceAll( String &target, const String& that, const String& with );
+
 	/** Replace the first ocurrence of the search string with the replacement string. */
 	static void replace( std::string& target, const std::string& that, const std::string& with );
 
+	/** Replace the first ocurrence of the search string with the replacement string. */
+	static void replace( String& target, const String& that, const String& with );
+
 	/** Removes the numbers at the end of the string */
 	static std::string removeNumbersAtEnd( std::string txt );
 
diff --git a/include/eepp/scene/action.hpp b/include/eepp/scene/action.hpp
index f4ade102c..5e5c25338 100644
--- a/include/eepp/scene/action.hpp
+++ b/include/eepp/scene/action.hpp
@@ -50,6 +50,8 @@ class EE_API Action {
 
 		Uint32 addEventListener( const ActionType & actionType, const ActionCallback & callback );
 
+		Action * on( const ActionType & actionType, const ActionCallback & callback );
+
 		void removeEventListener( const Uint32 & callbackId );
 
 		void sendEvent( const ActionType & actionType );
diff --git a/src/eepp/core/string.cpp b/src/eepp/core/string.cpp
index 4b0cdf27d..c6f8d1279 100644
--- a/src/eepp/core/string.cpp
+++ b/src/eepp/core/string.cpp
@@ -203,6 +203,16 @@ void String::replaceAll( std::string &target, const std::string& that, const std
 	}
 }
 
+void String::replaceAll( String &target, const String& that, const String& with ) {
+	std::string::size_type pos=0;
+
+	while( ( pos = target.find( that, pos ) ) != String::InvalidPos ) {
+		target.erase( pos, that.length() );
+		target.insert( pos, with );
+		pos += with.length();
+	}
+}
+
 void String::replace( std::string& target, const std::string& that, const std::string& with ) {
 	std::size_t start_pos = target.find( that );
 
@@ -212,6 +222,15 @@ void String::replace( std::string& target, const std::string& that, const std::s
 	target.replace( start_pos, that.length(), with );
 }
 
+void String::replace( String& target, const String& that, const String& with ) {
+	std::size_t start_pos = target.find( that );
+
+	if( start_pos == String::InvalidPos )
+		return;
+
+	target.replace( start_pos, that.length(), with );
+}
+
 std::string String::removeNumbersAtEnd( std::string txt ) {
 	while ( txt.size() && txt[ txt.size() - 1 ] >= '0' && txt[ txt.size() - 1 ] <= '9' ) {
 		txt.resize( txt.size() - 1 );
diff --git a/src/eepp/scene/action.cpp b/src/eepp/scene/action.cpp
index 43f2d42ea..c1445b9f0 100644
--- a/src/eepp/scene/action.cpp
+++ b/src/eepp/scene/action.cpp
@@ -54,6 +54,11 @@ Uint32 Action::addEventListener( const ActionType& actionType, const ActionCallb
 	return mNumCallBacks;
 }
 
+Action * Action::on(const Action::ActionType& actionType, const Action::ActionCallback& callback) {
+	addEventListener( actionType, callback );
+	return this;
+}
+
 void Action::removeEventListener( const Uint32& callbackId ) {
 	for ( auto it = mCallbacks.begin(); it != mCallbacks.end(); ++it ) {
 		std::map<Uint32, ActionCallback> event = it->second;