83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
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// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
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#include "python.hh"
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#include <vector>
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#include <algorithm>
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namespace ob {
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typedef std::vector<PyObject*> FunctionList;
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static FunctionList callbacks[OBActions::NUM_ACTIONS];
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bool python_register(int action, PyObject *callback)
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{
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if (action < 0 || action >= OBActions::NUM_ACTIONS) {
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PyErr_SetString(PyExc_AssertionError, "Invalid action type.");
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return false;
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}
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if (!PyCallable_Check(callback)) {
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PyErr_SetString(PyExc_AssertionError, "Invalid callback function.");
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return false;
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}
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FunctionList::iterator it = std::find(callbacks[action].begin(),
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callbacks[action].end(),
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callback);
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if (it == callbacks[action].end()) { // not already in there
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Py_XINCREF(callback); // Add a reference to new callback
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callbacks[action].push_back(callback);
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}
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return true;
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}
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bool python_unregister(int action, PyObject *callback)
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{
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if (action < 0 || action >= OBActions::NUM_ACTIONS) {
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PyErr_SetString(PyExc_AssertionError, "Invalid action type.");
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return false;
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}
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if (!PyCallable_Check(callback)) {
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PyErr_SetString(PyExc_AssertionError, "Invalid callback function.");
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return false;
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}
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FunctionList::iterator it = std::find(callbacks[action].begin(),
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callbacks[action].end(),
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callback);
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if (it != callbacks[action].end()) { // its been registered before
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Py_XDECREF(*it); // Dispose of previous callback
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callbacks[action].erase(it);
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}
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return true;
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}
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void python_callback(OBActions::ActionType action, Window window,
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OBWidget::WidgetType type, unsigned int state,
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long d1, long d2)
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{
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PyObject *arglist;
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PyObject *result;
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assert(action >= 0 && action < OBActions::NUM_ACTIONS);
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arglist = Py_BuildValue("iliill", action, window, type, state, d1, d2);
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FunctionList::iterator it, end = callbacks[action].end();
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for (it = callbacks[action].begin(); it != end; ++it) {
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// call the callback
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result = PyEval_CallObject(*it, arglist);
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if (result) {
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Py_DECREF(result);
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} else {
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// an exception occured in the script, display it
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PyErr_Print();
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}
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}
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Py_DECREF(arglist);
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}
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}
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