+
+/**
+A dialog which automatically deletes itself after being responded to.
+*/
+template<typename D>
+class MSPGLTK_API AutoDialog: public D
+{
+private:
+ struct StaleChecker
+ {
+ AutoDialog *dialog;
+
+ StaleChecker(AutoDialog &d): dialog(&d) { }
+ ~StaleChecker() { if(dialog->stale) delete dialog; }
+ };
+
+ bool stale = false;
+
+ template<typename... Args>
+ AutoDialog(Args &&... args): D(std::forward<Args>(args)...) { }
+
+public:
+ // Ensure that AutoDialog is always created with new.
+ template<typename... Args>
+ static AutoDialog *create(Args &&... args) { return new AutoDialog(std::forward<Args>(args)...); }
+
+ void button_release(int x, int y, unsigned b) override { StaleChecker sc(*this); D::button_release(x, y, b); }
+ bool key_release(unsigned k, unsigned m) override { StaleChecker sc(*this); return D::key_release(k, m); }
+ bool navigate(Navigation n) override { StaleChecker sc(*this); return D::navigate(n); }
+
+protected:
+ void on_response(int c) override { D::on_response(c); stale = true; }
+};
+