+bool python_preregister(int action, PyObject *callback)
+{
+ if (action < 0 || action >= OBActions::NUM_ACTIONS) {
+ PyErr_SetString(PyExc_AssertionError, "Invalid action type.");
+ return false;
+ }
+ if (!PyCallable_Check(callback)) {
+ PyErr_SetString(PyExc_AssertionError, "Invalid callback function.");
+ return false;
+ }
+
+ FunctionList::iterator it = std::find(callbacks[action].begin(),
+ callbacks[action].end(),
+ callback);
+ if (it == callbacks[action].end()) { // not already in there
+ Py_XINCREF(callback); // Add a reference to new callback
+ callbacks[action].insert(callbacks[action].begin(), callback);
+ }
+ return true;
+}
+