| 155 | |
| 156 | template<typename... Args> |
| 157 | class Delegate |
| 158 | { |
| 159 | public: |
| 160 | using IDelegate = DelegateFunction<Args...>; |
| 161 | |
| 162 | bool empty() const |
| 163 | { |
| 164 | return !mDelegate; |
| 165 | } |
| 166 | |
| 167 | void clear() |
| 168 | { |
| 169 | mDelegate.reset(); |
| 170 | } |
| 171 | |
| 172 | Delegate& operator=(IDelegate* _delegate) |
| 173 | { |
| 174 | mDelegate.reset(_delegate); |
| 175 | return *this; |
| 176 | } |
| 177 | |
| 178 | void operator()(Args... args) const |
| 179 | { |
| 180 | if (mDelegate) |
| 181 | mDelegate->invoke(args...); |
| 182 | } |
| 183 | |
| 184 | private: |
| 185 | std::unique_ptr<IDelegate> mDelegate; |
| 186 | }; |
| 187 | |
| 188 | template<typename... Args> |
| 189 | class MultiDelegate |