diff options
| -rw-r--r-- | libs/ardour/ardour/configuration_variable.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libs/ardour/ardour/configuration_variable.h b/libs/ardour/ardour/configuration_variable.h index ec954e8d9c..fa53b6a1c4 100644 --- a/libs/ardour/ardour/configuration_variable.h +++ b/libs/ardour/ardour/configuration_variable.h @@ -154,6 +154,31 @@ class ConfigVariableWithMutation : public ConfigVariable<T> T (*mutator)(T); }; +template<> +class ConfigVariableWithMutation<std::string> : public ConfigVariable<std::string> +{ + public: + ConfigVariableWithMutation (std::string name, std::string val, std::string (*m)(std::string)) + : ConfigVariable<std::string> (name, val), mutator (m) {} + + bool set (std::string val) { + if (unmutated_value != val) { + unmutated_value = val; + return ConfigVariable<std::string>::set (mutator (val)); + } + return false; + } + + void set_from_string (std::string const & s) { + set (s); + } + + protected: + virtual std::string get_for_save() { return unmutated_value; } + std::string unmutated_value; + std::string (*mutator)(std::string); +}; + } #endif /* __ardour_configuration_variable_h__ */ |